Natures Sunshine Products Inc NASDAQ:NATR Historical Prices

Below are the 8000 trading days of historical prices for NATR.

# Exchange Symbol Date Open High Low Close
8000 NASDAQ NATR Wed, Jan 18, 2023 10.10 10.32 9.50 9.54
7999 NASDAQ NATR Tue, Jan 17, 2023 9.99 10.00 9.64 9.93
7998 NASDAQ NATR Fri, Jan 13, 2023 9.90 10.09 9.31 9.99
7997 NASDAQ NATR Thu, Jan 12, 2023 9.31 9.97 9.31 9.92
7996 NASDAQ NATR Wed, Jan 11, 2023 9.37 9.37 9.15 9.34
7995 NASDAQ NATR Tue, Jan 10, 2023 9.12 9.45 9.01 9.33
7994 NASDAQ NATR Mon, Jan 9, 2023 8.96 9.20 8.87 9.12
7993 NASDAQ NATR Fri, Jan 6, 2023 8.45 8.90 8.44 8.86
7992 NASDAQ NATR Thu, Jan 5, 2023 8.50 8.67 8.31 8.34
7991 NASDAQ NATR Wed, Jan 4, 2023 8.60 8.79 8.29 8.47
7990 NASDAQ NATR Tue, Jan 3, 2023 8.24 8.54 8.11 8.53
7989 NASDAQ NATR Fri, Dec 30, 2022 8.41 8.50 8.24 8.32
7988 NASDAQ NATR Thu, Dec 29, 2022 8.34 8.66 8.28 8.39
7987 NASDAQ NATR Wed, Dec 28, 2022 8.36 8.50 8.32 8.34
7986 NASDAQ NATR Tue, Dec 27, 2022 8.52 8.60 8.33 8.37
7985 NASDAQ NATR Fri, Dec 23, 2022 8.39 8.52 8.30 8.52
7984 NASDAQ NATR Thu, Dec 22, 2022 8.43 8.68 8.18 8.38
7983 NASDAQ NATR Wed, Dec 21, 2022 8.33 8.65 8.28 8.42
7982 NASDAQ NATR Tue, Dec 20, 2022 8.16 8.38 8.16 8.25
7981 NASDAQ NATR Mon, Dec 19, 2022 8.11 8.30 8.08 8.11
7980 NASDAQ NATR Fri, Dec 16, 2022 8.15 8.35 8.01 8.11
7979 NASDAQ NATR Thu, Dec 15, 2022 8.17 8.50 8.17 8.23
7978 NASDAQ NATR Wed, Dec 14, 2022 8.01 8.50 8.01 8.31
7977 NASDAQ NATR Tue, Dec 13, 2022 8.46 8.57 7.93 8.02
7976 NASDAQ NATR Mon, Dec 12, 2022 8.56 8.56 8.11 8.28
7975 NASDAQ NATR Fri, Dec 9, 2022 8.49 8.67 8.09 8.10
7974 NASDAQ NATR Thu, Dec 8, 2022 8.48 8.63 8.48 8.58
7973 NASDAQ NATR Wed, Dec 7, 2022 8.53 8.68 8.38 8.54
7972 NASDAQ NATR Tue, Dec 6, 2022 8.66 8.69 8.54 8.60
7971 NASDAQ NATR Mon, Dec 5, 2022 8.53 8.65 8.53 8.57
7970 NASDAQ NATR Fri, Dec 2, 2022 8.44 8.70 8.40 8.66
7969 NASDAQ NATR Thu, Dec 1, 2022 8.98 9.04 8.26 8.45
7968 NASDAQ NATR Wed, Nov 30, 2022 8.90 9.11 8.60 8.90
7967 NASDAQ NATR Tue, Nov 29, 2022 8.94 9.05 8.88 8.90
7966 NASDAQ NATR Mon, Nov 28, 2022 9.04 9.12 8.81 8.98
7965 NASDAQ NATR Fri, Nov 25, 2022 9.07 9.08 9.00 9.01
7964 NASDAQ NATR Wed, Nov 23, 2022 8.93 9.08 8.72 9.00
7963 NASDAQ NATR Tue, Nov 22, 2022 8.57 9.00 8.57 8.93
7962 NASDAQ NATR Mon, Nov 21, 2022 8.90 8.91 8.74 8.80
7961 NASDAQ NATR Fri, Nov 18, 2022 9.03 9.03 8.53 8.92
7960 NASDAQ NATR Thu, Nov 17, 2022 8.66 9.00 8.50 8.97
7959 NASDAQ NATR Wed, Nov 16, 2022 8.35 8.72 8.32 8.67
7958 NASDAQ NATR Tue, Nov 15, 2022 8.27 8.86 8.16 8.42
7957 NASDAQ NATR Mon, Nov 14, 2022 8.17 8.24 8.06 8.20
7956 NASDAQ NATR Fri, Nov 11, 2022 8.58 8.65 8.10 8.17
7955 NASDAQ NATR Thu, Nov 10, 2022 8.75 8.79 8.19 8.48
7954 NASDAQ NATR Wed, Nov 9, 2022 8.61 8.68 8.28 8.41
7953 NASDAQ NATR Tue, Nov 8, 2022 8.61 8.75 8.51 8.59
7952 NASDAQ NATR Mon, Nov 7, 2022 8.50 8.89 8.50 8.61
7951 NASDAQ NATR Fri, Nov 4, 2022 8.07 8.57 8.07 8.49
7950 NASDAQ NATR Thu, Nov 3, 2022 8.38 8.64 8.16 8.32
7949 NASDAQ NATR Wed, Nov 2, 2022 8.33 8.71 8.20 8.38
7948 NASDAQ NATR Tue, Nov 1, 2022 8.45 8.66 8.40 8.49
7947 NASDAQ NATR Mon, Oct 31, 2022 9.04 9.10 8.24 8.44
7946 NASDAQ NATR Fri, Oct 28, 2022 8.89 9.14 8.70 9.04
7945 NASDAQ NATR Thu, Oct 27, 2022 8.64 8.99 8.55 8.71
7944 NASDAQ NATR Wed, Oct 26, 2022 8.58 8.77 8.50 8.56
7943 NASDAQ NATR Tue, Oct 25, 2022 8.39 8.69 8.35 8.51
7942 NASDAQ NATR Mon, Oct 24, 2022 8.41 8.66 8.30 8.39
7941 NASDAQ NATR Fri, Oct 21, 2022 8.24 8.65 8.20 8.45
7940 NASDAQ NATR Thu, Oct 20, 2022 8.26 8.47 8.03 8.18
7939 NASDAQ NATR Wed, Oct 19, 2022 8.53 8.55 8.09 8.20
7938 NASDAQ NATR Tue, Oct 18, 2022 8.63 8.82 8.42 8.51
7937 NASDAQ NATR Mon, Oct 17, 2022 8.19 8.80 8.19 8.63
7936 NASDAQ NATR Fri, Oct 14, 2022 8.22 8.31 7.99 8.15
7935 NASDAQ NATR Thu, Oct 13, 2022 8.00 8.30 7.97 8.26
7934 NASDAQ NATR Wed, Oct 12, 2022 8.26 8.41 7.95 8.15
7933 NASDAQ NATR Tue, Oct 11, 2022 8.31 8.58 8.00 8.14
7932 NASDAQ NATR Mon, Oct 10, 2022 8.20 8.20 7.97 8.10
7931 NASDAQ NATR Fri, Oct 7, 2022 8.14 8.28 8.00 8.13
7930 NASDAQ NATR Thu, Oct 6, 2022 8.25 8.28 8.03 8.21
7929 NASDAQ NATR Wed, Oct 5, 2022 8.64 8.68 8.23 8.31
7928 NASDAQ NATR Tue, Oct 4, 2022 8.54 8.92 8.46 8.67
7927 NASDAQ NATR Mon, Oct 3, 2022 8.29 8.47 8.08 8.42
7926 NASDAQ NATR Fri, Sep 30, 2022 8.10 8.50 8.01 8.24
7925 NASDAQ NATR Thu, Sep 29, 2022 8.67 8.67 8.11 8.31
7924 NASDAQ NATR Wed, Sep 28, 2022 8.63 8.78 8.52 8.68
7923 NASDAQ NATR Tue, Sep 27, 2022 8.54 8.68 8.41 8.56
7922 NASDAQ NATR Mon, Sep 26, 2022 8.65 8.66 8.41 8.54
7921 NASDAQ NATR Fri, Sep 23, 2022 8.35 8.71 8.31 8.61
7920 NASDAQ NATR Thu, Sep 22, 2022 8.60 8.84 8.49 8.75
7919 NASDAQ NATR Wed, Sep 21, 2022 8.62 8.77 8.58 8.66
7918 NASDAQ NATR Tue, Sep 20, 2022 8.67 8.69 8.53 8.62
7917 NASDAQ NATR Mon, Sep 19, 2022 8.55 8.78 8.46 8.72
7916 NASDAQ NATR Fri, Sep 16, 2022 8.78 8.78 8.53 8.71
7915 NASDAQ NATR Thu, Sep 15, 2022 8.96 9.06 8.75 8.83
7914 NASDAQ NATR Wed, Sep 14, 2022 9.06 9.06 8.89 8.90
7913 NASDAQ NATR Tue, Sep 13, 2022 9.07 9.41 8.92 9.00
7912 NASDAQ NATR Mon, Sep 12, 2022 9.42 9.42 9.12 9.13
7911 NASDAQ NATR Fri, Sep 9, 2022 9.40 9.49 9.31 9.34
7910 NASDAQ NATR Thu, Sep 8, 2022 9.24 9.39 9.24 9.36
7909 NASDAQ NATR Wed, Sep 7, 2022 9.14 9.44 9.13 9.34
7908 NASDAQ NATR Tue, Sep 6, 2022 9.48 9.50 9.26 9.27
7907 NASDAQ NATR Fri, Sep 2, 2022 9.82 9.82 9.47 9.50
7906 NASDAQ NATR Thu, Sep 1, 2022 9.58 9.97 9.51 9.81
7905 NASDAQ NATR Wed, Aug 31, 2022 9.55 9.78 9.54 9.70
7904 NASDAQ NATR Tue, Aug 30, 2022 9.88 9.88 9.47 9.55
7903 NASDAQ NATR Mon, Aug 29, 2022 10.01 10.12 9.78 9.80
7902 NASDAQ NATR Fri, Aug 26, 2022 9.66 10.31 9.66 9.98
7901 NASDAQ NATR Thu, Aug 25, 2022 9.97 10.03 9.59 9.69
7900 NASDAQ NATR Wed, Aug 24, 2022 10.07 10.07 9.95 9.97
7899 NASDAQ NATR Tue, Aug 23, 2022 10.11 10.19 9.97 10.01
7898 NASDAQ NATR Mon, Aug 22, 2022 10.02 10.07 9.83 10.04
7897 NASDAQ NATR Fri, Aug 19, 2022 10.34 10.43 10.05 10.16
7896 NASDAQ NATR Thu, Aug 18, 2022 10.07 10.50 10.07 10.46
7895 NASDAQ NATR Wed, Aug 17, 2022 10.31 10.45 10.02 10.08
7894 NASDAQ NATR Tue, Aug 16, 2022 10.38 10.50 10.23 10.26
7893 NASDAQ NATR Mon, Aug 15, 2022 10.17 10.45 10.14 10.43
7892 NASDAQ NATR Fri, Aug 12, 2022 10.30 10.46 10.17 10.21
7891 NASDAQ NATR Thu, Aug 11, 2022 10.36 10.48 10.25 10.33
7890 NASDAQ NATR Wed, Aug 10, 2022 10.90 10.90 10.05 10.41
7889 NASDAQ NATR Tue, Aug 9, 2022 10.82 10.82 10.36 10.50
7888 NASDAQ NATR Mon, Aug 8, 2022 10.91 11.06 10.43 10.90
7887 NASDAQ NATR Fri, Aug 5, 2022 10.82 10.86 10.56 10.79
7886 NASDAQ NATR Thu, Aug 4, 2022 10.70 10.85 10.53 10.82
7885 NASDAQ NATR Wed, Aug 3, 2022 10.46 10.67 10.37 10.60
7884 NASDAQ NATR Tue, Aug 2, 2022 10.44 10.48 10.30 10.34
7883 NASDAQ NATR Mon, Aug 1, 2022 10.45 10.52 10.24 10.44
7882 NASDAQ NATR Fri, Jul 29, 2022 10.43 10.54 10.43 10.45
7881 NASDAQ NATR Thu, Jul 28, 2022 10.83 10.83 10.36 10.44
7880 NASDAQ NATR Wed, Jul 27, 2022 10.52 10.69 10.45 10.61
7879 NASDAQ NATR Tue, Jul 26, 2022 10.64 10.67 10.49 10.51
7878 NASDAQ NATR Mon, Jul 25, 2022 10.77 10.89 10.55 10.59
7877 NASDAQ NATR Fri, Jul 22, 2022 11.01 11.20 10.79 10.81
7876 NASDAQ NATR Thu, Jul 21, 2022 11.10 11.12 10.86 11.00
7875 NASDAQ NATR Wed, Jul 20, 2022 11.10 11.27 10.97 11.07
7874 NASDAQ NATR Tue, Jul 19, 2022 11.01 11.20 11.01 11.08
7873 NASDAQ NATR Mon, Jul 18, 2022 10.94 11.03 10.85 10.86
7872 NASDAQ NATR Fri, Jul 15, 2022 10.62 10.95 10.62 10.94
7871 NASDAQ NATR Thu, Jul 14, 2022 10.38 10.55 10.27 10.48
7870 NASDAQ NATR Wed, Jul 13, 2022 10.37 10.55 10.37 10.48
7869 NASDAQ NATR Tue, Jul 12, 2022 10.38 10.60 10.38 10.47
7868 NASDAQ NATR Mon, Jul 11, 2022 10.42 10.49 10.17 10.37
7867 NASDAQ NATR Fri, Jul 8, 2022 10.67 10.67 10.37 10.41
7866 NASDAQ NATR Thu, Jul 7, 2022 10.45 10.78 10.45 10.76
7865 NASDAQ NATR Wed, Jul 6, 2022 10.59 10.75 10.35 10.44
7864 NASDAQ NATR Tue, Jul 5, 2022 10.61 10.70 10.44 10.68
7863 NASDAQ NATR Fri, Jul 1, 2022 10.61 10.86 10.60 10.85
7862 NASDAQ NATR Thu, Jun 30, 2022 10.65 10.83 10.59 10.67
7861 NASDAQ NATR Wed, Jun 29, 2022 11.04 11.04 10.52 10.69
7860 NASDAQ NATR Tue, Jun 28, 2022 11.34 11.51 10.93 10.97
7859 NASDAQ NATR Mon, Jun 27, 2022 11.08 11.56 11.08 11.33
7858 NASDAQ NATR Fri, Jun 24, 2022 11.30 11.37 11.05 11.13
7857 NASDAQ NATR Thu, Jun 23, 2022 11.31 11.62 11.25 11.29
7856 NASDAQ NATR Wed, Jun 22, 2022 11.25 11.43 11.25 11.33
7855 NASDAQ NATR Tue, Jun 21, 2022 11.55 11.59 11.33 11.35
7854 NASDAQ NATR Fri, Jun 17, 2022 11.36 11.95 11.34 11.53
7853 NASDAQ NATR Thu, Jun 16, 2022 11.57 11.58 11.25 11.31
7852 NASDAQ NATR Wed, Jun 15, 2022 11.46 11.93 11.46 11.78
7851 NASDAQ NATR Tue, Jun 14, 2022 11.46 11.50 11.37 11.43
7850 NASDAQ NATR Mon, Jun 13, 2022 11.52 11.56 11.38 11.47
7849 NASDAQ NATR Fri, Jun 10, 2022 12.11 12.11 11.82 11.83
7848 NASDAQ NATR Thu, Jun 9, 2022 12.22 12.36 12.03 12.19
7847 NASDAQ NATR Wed, Jun 8, 2022 12.57 12.57 12.15 12.22
7846 NASDAQ NATR Tue, Jun 7, 2022 12.68 12.80 12.51 12.66
7845 NASDAQ NATR Mon, Jun 6, 2022 12.16 12.83 12.10 12.67
7844 NASDAQ NATR Fri, Jun 3, 2022 12.42 12.42 11.94 11.99
7843 NASDAQ NATR Thu, Jun 2, 2022 11.94 12.34 11.83 12.26
7842 NASDAQ NATR Wed, Jun 1, 2022 12.16 12.16 11.91 11.97
7841 NASDAQ NATR Tue, May 31, 2022 12.24 12.47 12.06 12.09
7840 NASDAQ NATR Fri, May 27, 2022 12.33 12.62 12.13 12.40
7839 NASDAQ NATR Thu, May 26, 2022 12.12 12.55 12.12 12.29
7838 NASDAQ NATR Wed, May 25, 2022 11.95 12.17 11.89 12.02
7837 NASDAQ NATR Tue, May 24, 2022 11.78 12.09 11.60 12.02
7836 NASDAQ NATR Mon, May 23, 2022 11.99 12.01 11.72 11.91
7835 NASDAQ NATR Fri, May 20, 2022 11.98 11.98 11.52 11.86
7834 NASDAQ NATR Thu, May 19, 2022 12.04 12.09 11.72 11.95
7833 NASDAQ NATR Wed, May 18, 2022 12.17 12.23 11.84 12.04
7832 NASDAQ NATR Tue, May 17, 2022 12.24 12.71 12.12 12.31
7831 NASDAQ NATR Mon, May 16, 2022 12.41 12.43 12.03 12.25
7830 NASDAQ NATR Fri, May 13, 2022 12.33 12.92 12.33 12.52
7829 NASDAQ NATR Thu, May 12, 2022 12.53 12.76 12.03 12.31
7828 NASDAQ NATR Wed, May 11, 2022 12.57 13.07 12.44 12.62
7827 NASDAQ NATR Tue, May 10, 2022 12.56 12.93 12.44 12.63
7826 NASDAQ NATR Mon, May 9, 2022 13.34 13.34 12.48 12.58
7825 NASDAQ NATR Fri, May 6, 2022 14.77 14.77 13.16 13.50
7824 NASDAQ NATR Thu, May 5, 2022 16.20 16.41 15.26 15.70
7823 NASDAQ NATR Wed, May 4, 2022 16.47 16.68 15.62 16.18
7822 NASDAQ NATR Tue, May 3, 2022 16.29 16.53 16.27 16.48
7821 NASDAQ NATR Mon, May 2, 2022 16.51 16.58 16.27 16.35
7820 NASDAQ NATR Fri, Apr 29, 2022 16.96 16.96 16.53 16.56
7819 NASDAQ NATR Thu, Apr 28, 2022 16.73 16.88 16.40 16.88
7818 NASDAQ NATR Wed, Apr 27, 2022 16.56 16.78 16.52 16.58
7817 NASDAQ NATR Tue, Apr 26, 2022 17.01 17.01 16.58 16.64
7816 NASDAQ NATR Mon, Apr 25, 2022 16.90 17.10 16.75 17.03
7815 NASDAQ NATR Fri, Apr 22, 2022 17.31 17.31 16.95 16.95
7814 NASDAQ NATR Thu, Apr 21, 2022 17.61 17.80 17.22 17.32
7813 NASDAQ NATR Wed, Apr 20, 2022 17.59 17.92 17.50 17.61
7812 NASDAQ NATR Tue, Apr 19, 2022 17.57 17.86 17.49 17.59
7811 NASDAQ NATR Mon, Apr 18, 2022 17.80 17.96 17.41 17.57
7810 NASDAQ NATR Thu, Apr 14, 2022 17.77 18.00 17.67 17.75
7809 NASDAQ NATR Wed, Apr 13, 2022 17.50 17.84 17.50 17.77
7808 NASDAQ NATR Tue, Apr 12, 2022 17.54 17.96 17.45 17.52
7807 NASDAQ NATR Mon, Apr 11, 2022 17.26 17.84 17.26 17.60
7806 NASDAQ NATR Fri, Apr 8, 2022 17.15 17.48 17.06 17.33
7805 NASDAQ NATR Thu, Apr 7, 2022 16.85 17.18 16.69 17.12
7804 NASDAQ NATR Wed, Apr 6, 2022 16.77 16.87 16.56 16.77
7803 NASDAQ NATR Tue, Apr 5, 2022 17.10 17.19 16.69 16.69
7802 NASDAQ NATR Mon, Apr 4, 2022 17.23 17.23 16.89 17.01
7801 NASDAQ NATR Fri, Apr 1, 2022 16.93 17.27 16.70 17.20
7800 NASDAQ NATR Thu, Mar 31, 2022 16.72 16.91 16.66 16.82
7799 NASDAQ NATR Wed, Mar 30, 2022 17.15 17.15 16.79 16.79
7798 NASDAQ NATR Tue, Mar 29, 2022 17.45 17.64 17.09 17.15
7797 NASDAQ NATR Mon, Mar 28, 2022 17.16 17.40 17.06 17.31
7796 NASDAQ NATR Fri, Mar 25, 2022 17.10 17.37 17.03 17.23
7795 NASDAQ NATR Thu, Mar 24, 2022 16.86 17.25 16.86 17.06
7794 NASDAQ NATR Wed, Mar 23, 2022 17.25 17.26 16.96 17.12
7793 NASDAQ NATR Tue, Mar 22, 2022 17.48 17.52 17.28 17.37
7792 NASDAQ NATR Mon, Mar 21, 2022 17.22 17.37 17.13 17.29
7791 NASDAQ NATR Fri, Mar 18, 2022 17.42 17.43 16.82 17.03
7790 NASDAQ NATR Thu, Mar 17, 2022 16.89 17.60 16.89 17.42
7789 NASDAQ NATR Wed, Mar 16, 2022 17.06 17.20 16.71 16.94
7788 NASDAQ NATR Tue, Mar 15, 2022 17.08 17.25 16.87 16.98
7787 NASDAQ NATR Mon, Mar 14, 2022 16.73 17.24 16.46 17.10
7786 NASDAQ NATR Fri, Mar 11, 2022 17.22 17.22 16.65 16.81
7785 NASDAQ NATR Thu, Mar 10, 2022 16.25 17.09 16.25 17.08
7784 NASDAQ NATR Wed, Mar 9, 2022 17.50 17.50 16.19 16.40
7783 NASDAQ NATR Tue, Mar 8, 2022 16.82 17.26 16.71 16.81
7782 NASDAQ NATR Mon, Mar 7, 2022 16.60 16.93 16.40 16.67
7781 NASDAQ NATR Fri, Mar 4, 2022 17.21 17.35 16.52 16.68
7780 NASDAQ NATR Thu, Mar 3, 2022 17.38 17.67 17.05 17.31
7779 NASDAQ NATR Wed, Mar 2, 2022 16.88 17.53 16.77 17.42
7778 NASDAQ NATR Tue, Mar 1, 2022 17.53 18.02 16.87 16.90
7777 NASDAQ NATR Mon, Feb 28, 2022 17.75 17.92 17.52 17.53
7776 NASDAQ NATR Fri, Feb 25, 2022 17.82 17.93 17.68 17.83
7775 NASDAQ NATR Thu, Feb 24, 2022 17.54 18.09 17.33 17.83
7774 NASDAQ NATR Wed, Feb 23, 2022 18.01 18.01 17.81 17.88
7773 NASDAQ NATR Tue, Feb 22, 2022 17.95 18.21 17.62 17.86
7772 NASDAQ NATR Fri, Feb 18, 2022 18.42 18.47 17.99 18.05
7771 NASDAQ NATR Thu, Feb 17, 2022 18.24 18.73 17.98 18.51
7770 NASDAQ NATR Wed, Feb 16, 2022 17.87 18.37 17.80 18.35
7769 NASDAQ NATR Tue, Feb 15, 2022 17.77 18.17 17.67 17.91
7768 NASDAQ NATR Mon, Feb 14, 2022 17.64 17.78 17.47 17.63
7767 NASDAQ NATR Fri, Feb 11, 2022 17.57 17.90 17.57 17.66
7766 NASDAQ NATR Thu, Feb 10, 2022 17.40 17.80 17.36 17.61
7765 NASDAQ NATR Wed, Feb 9, 2022 17.95 17.99 17.62 17.65
7764 NASDAQ NATR Tue, Feb 8, 2022 17.74 17.95 17.74 17.86
7763 NASDAQ NATR Mon, Feb 7, 2022 18.57 18.57 17.23 17.80
7762 NASDAQ NATR Fri, Feb 4, 2022 17.13 17.50 16.87 17.32
7761 NASDAQ NATR Thu, Feb 3, 2022 17.45 17.61 17.24 17.27
7760 NASDAQ NATR Wed, Feb 2, 2022 18.21 18.21 17.47 17.49
7759 NASDAQ NATR Tue, Feb 1, 2022 17.73 18.16 17.47 18.03
7758 NASDAQ NATR Mon, Jan 31, 2022 17.75 17.85 17.52 17.64
7757 NASDAQ NATR Fri, Jan 28, 2022 17.34 17.68 17.02 17.59
7756 NASDAQ NATR Thu, Jan 27, 2022 17.72 17.83 17.35 17.43
7755 NASDAQ NATR Wed, Jan 26, 2022 18.07 18.21 17.50 17.56
7754 NASDAQ NATR Tue, Jan 25, 2022 18.29 18.29 17.61 17.86
7753 NASDAQ NATR Mon, Jan 24, 2022 18.20 18.41 17.55 18.35
7752 NASDAQ NATR Fri, Jan 21, 2022 17.86 18.61 17.86 18.29
7751 NASDAQ NATR Thu, Jan 20, 2022 18.51 18.54 18.27 18.27
7750 NASDAQ NATR Wed, Jan 19, 2022 18.15 18.50 17.94 18.44
7749 NASDAQ NATR Tue, Jan 18, 2022 18.48 18.61 17.69 17.97
7748 NASDAQ NATR Fri, Jan 14, 2022 19.10 19.10 18.59 18.61
7747 NASDAQ NATR Thu, Jan 13, 2022 18.94 19.26 18.86 19.11
7746 NASDAQ NATR Wed, Jan 12, 2022 18.82 19.00 18.53 18.82
7745 NASDAQ NATR Tue, Jan 11, 2022 18.45 18.87 18.35 18.75
7744 NASDAQ NATR Mon, Jan 10, 2022 18.62 18.70 18.40 18.62
7743 NASDAQ NATR Fri, Jan 7, 2022 18.75 18.86 18.59 18.71
7742 NASDAQ NATR Thu, Jan 6, 2022 18.76 18.87 18.23 18.69
7741 NASDAQ NATR Wed, Jan 5, 2022 18.81 18.81 18.30 18.48
7740 NASDAQ NATR Tue, Jan 4, 2022 18.92 19.09 18.75 18.97
7739 NASDAQ NATR Mon, Jan 3, 2022 18.55 19.00 18.51 18.77
7738 NASDAQ NATR Fri, Dec 31, 2021 18.60 18.77 18.38 18.50
7737 NASDAQ NATR Thu, Dec 30, 2021 18.60 19.03 18.57 18.68
7736 NASDAQ NATR Wed, Dec 29, 2021 18.53 18.80 18.21 18.67
7735 NASDAQ NATR Tue, Dec 28, 2021 18.86 18.86 18.20 18.48
7734 NASDAQ NATR Mon, Dec 27, 2021 18.37 18.62 18.00 18.57
7733 NASDAQ NATR Thu, Dec 23, 2021 18.20 18.53 17.90 18.33
7732 NASDAQ NATR Wed, Dec 22, 2021 18.17 18.27 17.91 18.15
7731 NASDAQ NATR Tue, Dec 21, 2021 18.11 18.43 17.96 18.11
7730 NASDAQ NATR Mon, Dec 20, 2021 18.12 18.46 17.52 18.11
7729 NASDAQ NATR Fri, Dec 17, 2021 18.70 18.84 17.68 18.15
7728 NASDAQ NATR Thu, Dec 16, 2021 19.15 19.18 18.15 18.22
7727 NASDAQ NATR Wed, Dec 15, 2021 18.50 19.02 18.15 18.99
7726 NASDAQ NATR Tue, Dec 14, 2021 18.42 18.79 18.16 18.40
7725 NASDAQ NATR Mon, Dec 13, 2021 18.27 18.74 18.00 18.48
7724 NASDAQ NATR Fri, Dec 10, 2021 18.40 18.48 18.06 18.35
7723 NASDAQ NATR Thu, Dec 9, 2021 17.97 18.48 17.49 18.29
7722 NASDAQ NATR Wed, Dec 8, 2021 17.93 18.10 17.66 18.02
7721 NASDAQ NATR Tue, Dec 7, 2021 17.50 18.15 17.50 17.90
7720 NASDAQ NATR Mon, Dec 6, 2021 17.93 17.93 17.02 17.40
7719 NASDAQ NATR Fri, Dec 3, 2021 17.27 17.27 16.88 17.23
7718 NASDAQ NATR Thu, Dec 2, 2021 17.16 17.33 16.98 17.15
7717 NASDAQ NATR Wed, Dec 1, 2021 17.51 17.90 17.06 17.22
7716 NASDAQ NATR Tue, Nov 30, 2021 17.18 17.28 16.80 17.00
7715 NASDAQ NATR Mon, Nov 29, 2021 17.22 17.91 17.00 17.23
7714 NASDAQ NATR Fri, Nov 26, 2021 18.68 18.68 16.82 17.08
7713 NASDAQ NATR Wed, Nov 24, 2021 18.25 18.29 17.84 17.88
7712 NASDAQ NATR Tue, Nov 23, 2021 18.16 18.23 17.67 18.23
7711 NASDAQ NATR Mon, Nov 22, 2021 18.40 18.62 18.00 18.24
7710 NASDAQ NATR Fri, Nov 19, 2021 18.67 18.67 18.14 18.35
7709 NASDAQ NATR Thu, Nov 18, 2021 18.39 18.43 18.07 18.38
7708 NASDAQ NATR Wed, Nov 17, 2021 18.21 18.63 18.06 18.35
7707 NASDAQ NATR Tue, Nov 16, 2021 17.85 18.40 17.69 18.27
7706 NASDAQ NATR Mon, Nov 15, 2021 18.29 18.41 17.89 17.98
7705 NASDAQ NATR Fri, Nov 12, 2021 17.70 18.26 17.25 18.11
7704 NASDAQ NATR Thu, Nov 11, 2021 17.29 17.79 17.14 17.73
7703 NASDAQ NATR Wed, Nov 10, 2021 17.08 17.33 16.97 17.19
7702 NASDAQ NATR Tue, Nov 9, 2021 17.06 17.19 16.76 17.18
7701 NASDAQ NATR Mon, Nov 8, 2021 17.22 17.24 16.62 17.08
7700 NASDAQ NATR Fri, Nov 5, 2021 16.00 17.29 16.00 17.22
7699 NASDAQ NATR Thu, Nov 4, 2021 16.43 16.43 15.63 15.83
7698 NASDAQ NATR Wed, Nov 3, 2021 16.29 16.29 15.52 15.85
7697 NASDAQ NATR Tue, Nov 2, 2021 15.84 15.97 15.54 15.72
7696 NASDAQ NATR Mon, Nov 1, 2021 15.85 16.18 15.49 15.78
7695 NASDAQ NATR Fri, Oct 29, 2021 15.64 15.92 15.56 15.79
7694 NASDAQ NATR Thu, Oct 28, 2021 15.73 15.88 15.50 15.73
7693 NASDAQ NATR Wed, Oct 27, 2021 16.06 16.06 15.49 15.54
7692 NASDAQ NATR Tue, Oct 26, 2021 16.12 16.27 15.90 16.05
7691 NASDAQ NATR Mon, Oct 25, 2021 16.02 16.19 15.70 16.02
7690 NASDAQ NATR Fri, Oct 22, 2021 16.10 16.25 15.98 16.07
7689 NASDAQ NATR Thu, Oct 21, 2021 15.61 16.18 15.61 16.04
7688 NASDAQ NATR Wed, Oct 20, 2021 15.60 15.75 15.50 15.68
7687 NASDAQ NATR Tue, Oct 19, 2021 15.33 15.65 15.27 15.52
7686 NASDAQ NATR Mon, Oct 18, 2021 15.26 15.51 15.20 15.33
7685 NASDAQ NATR Fri, Oct 15, 2021 15.39 15.59 15.27 15.37
7684 NASDAQ NATR Thu, Oct 14, 2021 15.04 15.15 14.89 14.90
7683 NASDAQ NATR Wed, Oct 13, 2021 14.89 15.03 14.82 14.83
7682 NASDAQ NATR Tue, Oct 12, 2021 14.99 15.05 14.72 14.92
7681 NASDAQ NATR Mon, Oct 11, 2021 15.11 15.22 14.96 14.99
7680 NASDAQ NATR Fri, Oct 8, 2021 15.42 15.42 15.00 15.16
7679 NASDAQ NATR Thu, Oct 7, 2021 15.00 15.60 14.79 15.38
7678 NASDAQ NATR Wed, Oct 6, 2021 14.59 14.74 14.37 14.72
7677 NASDAQ NATR Tue, Oct 5, 2021 14.77 14.85 14.63 14.73
7676 NASDAQ NATR Mon, Oct 4, 2021 14.87 14.87 14.49 14.77
7675 NASDAQ NATR Fri, Oct 1, 2021 14.69 15.13 14.55 14.89
7674 NASDAQ NATR Thu, Sep 30, 2021 14.89 14.94 14.61 14.65
7673 NASDAQ NATR Wed, Sep 29, 2021 14.66 15.00 14.54 14.85
7672 NASDAQ NATR Tue, Sep 28, 2021 14.99 15.00 14.39 14.54
7671 NASDAQ NATR Mon, Sep 27, 2021 14.50 15.20 14.50 14.99
7670 NASDAQ NATR Fri, Sep 24, 2021 15.04 15.06 14.48 14.48
7669 NASDAQ NATR Thu, Sep 23, 2021 14.66 15.28 14.66 15.04
7668 NASDAQ NATR Wed, Sep 22, 2021 14.20 14.85 14.20 14.60
7667 NASDAQ NATR Tue, Sep 21, 2021 14.58 15.23 13.85 14.06
7666 NASDAQ NATR Mon, Sep 20, 2021 14.46 14.81 14.40 14.42
7665 NASDAQ NATR Fri, Sep 17, 2021 14.32 14.84 14.27 14.50
7664 NASDAQ NATR Thu, Sep 16, 2021 15.22 15.49 14.36 14.39
7663 NASDAQ NATR Wed, Sep 15, 2021 15.76 15.98 15.11 15.11
7662 NASDAQ NATR Tue, Sep 14, 2021 16.47 16.78 15.74 15.75
7661 NASDAQ NATR Mon, Sep 13, 2021 16.30 16.51 16.03 16.34
7660 NASDAQ NATR Fri, Sep 10, 2021 16.71 16.82 16.29 16.30
7659 NASDAQ NATR Thu, Sep 9, 2021 17.05 17.05 16.67 16.70
7658 NASDAQ NATR Wed, Sep 8, 2021 17.40 17.44 16.95 17.00
7657 NASDAQ NATR Tue, Sep 7, 2021 17.44 18.00 17.06 17.36
7656 NASDAQ NATR Fri, Sep 3, 2021 17.32 17.53 17.10 17.42
7655 NASDAQ NATR Thu, Sep 2, 2021 17.57 17.57 16.99 17.21
7654 NASDAQ NATR Wed, Sep 1, 2021 17.19 17.70 17.19 17.47
7653 NASDAQ NATR Tue, Aug 31, 2021 17.33 17.33 17.02 17.12
7652 NASDAQ NATR Mon, Aug 30, 2021 17.62 17.62 17.02 17.25
7651 NASDAQ NATR Fri, Aug 27, 2021 17.39 17.65 17.26 17.49
7650 NASDAQ NATR Thu, Aug 26, 2021 17.35 17.49 17.02 17.27
7649 NASDAQ NATR Wed, Aug 25, 2021 17.13 17.61 16.98 17.27
7648 NASDAQ NATR Tue, Aug 24, 2021 17.47 17.70 17.02 17.06
7647 NASDAQ NATR Mon, Aug 23, 2021 17.10 17.64 17.10 17.54
7646 NASDAQ NATR Fri, Aug 20, 2021 16.74 17.19 16.71 17.03
7645 NASDAQ NATR Thu, Aug 19, 2021 16.33 17.00 16.33 16.82
7644 NASDAQ NATR Wed, Aug 18, 2021 16.70 16.85 16.39 16.44
7643 NASDAQ NATR Tue, Aug 17, 2021 16.57 16.84 16.33 16.75
7642 NASDAQ NATR Mon, Aug 16, 2021 16.44 16.62 16.22 16.59
7641 NASDAQ NATR Fri, Aug 13, 2021 16.18 16.59 16.01 16.35
7640 NASDAQ NATR Thu, Aug 12, 2021 16.64 16.73 16.20 16.43
7639 NASDAQ NATR Wed, Aug 11, 2021 16.85 17.08 16.51 16.66
7638 NASDAQ NATR Tue, Aug 10, 2021 16.70 16.88 16.42 16.88
7637 NASDAQ NATR Mon, Aug 9, 2021 17.06 17.25 16.63 16.63
7636 NASDAQ NATR Fri, Aug 6, 2021 16.98 17.48 16.50 17.03
7635 NASDAQ NATR Thu, Aug 5, 2021 17.22 17.34 16.65 17.22
7634 NASDAQ NATR Wed, Aug 4, 2021 17.18 17.42 17.01 17.08
7633 NASDAQ NATR Tue, Aug 3, 2021 17.39 17.48 17.19 17.36
7632 NASDAQ NATR Mon, Aug 2, 2021 17.66 17.66 17.25 17.34
7631 NASDAQ NATR Fri, Jul 30, 2021 17.33 17.89 17.33 17.59
7630 NASDAQ NATR Thu, Jul 29, 2021 17.67 17.77 17.26 17.31
7629 NASDAQ NATR Wed, Jul 28, 2021 17.59 17.73 17.32 17.57
7628 NASDAQ NATR Tue, Jul 27, 2021 17.49 17.83 17.31 17.61
7627 NASDAQ NATR Mon, Jul 26, 2021 17.68 17.68 17.38 17.52
7626 NASDAQ NATR Fri, Jul 23, 2021 17.56 17.79 17.31 17.67
7625 NASDAQ NATR Thu, Jul 22, 2021 17.77 17.98 17.31 17.41
7624 NASDAQ NATR Wed, Jul 21, 2021 18.17 18.33 17.89 17.91
7623 NASDAQ NATR Tue, Jul 20, 2021 17.68 18.52 17.46 18.05
7622 NASDAQ NATR Mon, Jul 19, 2021 17.96 18.00 17.43 17.49
7621 NASDAQ NATR Fri, Jul 16, 2021 18.32 18.59 18.20 18.26
7620 NASDAQ NATR Thu, Jul 15, 2021 18.19 18.26 17.82 18.24
7619 NASDAQ NATR Wed, Jul 14, 2021 18.15 18.29 17.89 18.22
7618 NASDAQ NATR Tue, Jul 13, 2021 18.84 18.88 17.90 18.06
7617 NASDAQ NATR Mon, Jul 12, 2021 18.10 19.06 17.95 18.92
7616 NASDAQ NATR Fri, Jul 9, 2021 17.69 18.37 17.69 18.11
7615 NASDAQ NATR Thu, Jul 8, 2021 17.33 17.76 17.18 17.63
7614 NASDAQ NATR Wed, Jul 7, 2021 17.83 18.02 17.42 17.58
7613 NASDAQ NATR Tue, Jul 6, 2021 17.26 18.03 17.20 17.95
7612 NASDAQ NATR Fri, Jul 2, 2021 17.47 17.54 17.09 17.34
7611 NASDAQ NATR Thu, Jul 1, 2021 17.52 17.67 17.30 17.37
7610 NASDAQ NATR Wed, Jun 30, 2021 17.98 18.11 17.23 17.37
7609 NASDAQ NATR Tue, Jun 29, 2021 18.75 18.98 17.92 18.09
7608 NASDAQ NATR Mon, Jun 28, 2021 18.56 18.98 18.20 18.79
7607 NASDAQ NATR Fri, Jun 25, 2021 18.85 19.03 17.90 18.11
7606 NASDAQ NATR Thu, Jun 24, 2021 18.98 19.08 18.73 18.83
7605 NASDAQ NATR Wed, Jun 23, 2021 19.01 19.43 18.80 18.85
7604 NASDAQ NATR Tue, Jun 22, 2021 19.43 19.43 19.01 19.03
7603 NASDAQ NATR Mon, Jun 21, 2021 19.10 19.68 19.05 19.39
7602 NASDAQ NATR Fri, Jun 18, 2021 19.20 19.45 19.03 19.11
7601 NASDAQ NATR Thu, Jun 17, 2021 19.31 19.60 19.26 19.44
7600 NASDAQ NATR Wed, Jun 16, 2021 19.81 19.98 19.40 19.50
7599 NASDAQ NATR Tue, Jun 15, 2021 19.80 19.89 19.53 19.81
7598 NASDAQ NATR Mon, Jun 14, 2021 19.89 20.16 19.80 19.90
7597 NASDAQ NATR Fri, Jun 11, 2021 20.18 20.25 19.96 19.98
7596 NASDAQ NATR Thu, Jun 10, 2021 20.04 20.15 19.90 20.06
7595 NASDAQ NATR Wed, Jun 9, 2021 20.18 20.29 19.98 20.03
7594 NASDAQ NATR Tue, Jun 8, 2021 20.51 20.58 20.19 20.25
7593 NASDAQ NATR Mon, Jun 7, 2021 20.38 20.61 20.29 20.48
7592 NASDAQ NATR Fri, Jun 4, 2021 20.50 20.51 20.21 20.38
7591 NASDAQ NATR Thu, Jun 3, 2021 19.80 20.46 19.68 20.44
7590 NASDAQ NATR Wed, Jun 2, 2021 20.06 20.32 19.57 19.97
7589 NASDAQ NATR Tue, Jun 1, 2021 20.55 20.67 19.90 19.97
7588 NASDAQ NATR Fri, May 28, 2021 20.37 20.53 20.26 20.49
7587 NASDAQ NATR Thu, May 27, 2021 20.49 20.59 20.21 20.35
7586 NASDAQ NATR Wed, May 26, 2021 19.96 20.53 19.58 20.40
7585 NASDAQ NATR Tue, May 25, 2021 20.00 20.25 19.88 19.93
7584 NASDAQ NATR Mon, May 24, 2021 20.03 20.24 19.75 20.02
7583 NASDAQ NATR Fri, May 21, 2021 19.92 20.12 19.66 19.97
7582 NASDAQ NATR Thu, May 20, 2021 19.64 20.00 19.28 19.90
7581 NASDAQ NATR Wed, May 19, 2021 19.68 19.68 18.63 19.48
7580 NASDAQ NATR Tue, May 18, 2021 19.70 19.70 19.01 19.14
7579 NASDAQ NATR Mon, May 17, 2021 19.70 19.70 18.73 19.17
7578 NASDAQ NATR Fri, May 14, 2021 19.55 19.63 19.13 19.42
7577 NASDAQ NATR Thu, May 13, 2021 19.56 19.56 18.71 19.11
7576 NASDAQ NATR Wed, May 12, 2021 19.23 19.57 18.31 18.66
7575 NASDAQ NATR Tue, May 11, 2021 20.07 20.08 19.03 19.30
7574 NASDAQ NATR Mon, May 10, 2021 20.53 20.75 20.21 20.39
7573 NASDAQ NATR Fri, May 7, 2021 20.89 20.90 20.50 20.66
7572 NASDAQ NATR Thu, May 6, 2021 20.38 20.90 20.07 20.89
7571 NASDAQ NATR Wed, May 5, 2021 20.74 20.85 20.26 20.39
7570 NASDAQ NATR Tue, May 4, 2021 20.93 20.93 20.05 20.64
7569 NASDAQ NATR Mon, May 3, 2021 20.86 20.95 19.75 20.81
7568 NASDAQ NATR Fri, Apr 30, 2021 20.18 21.50 20.11 20.81
7567 NASDAQ NATR Thu, Apr 29, 2021 20.25 20.30 19.94 20.26
7566 NASDAQ NATR Wed, Apr 28, 2021 19.87 20.26 19.73 20.02
7565 NASDAQ NATR Tue, Apr 27, 2021 20.29 20.30 19.80 19.81
7564 NASDAQ NATR Mon, Apr 26, 2021 20.08 20.27 19.83 20.24
7563 NASDAQ NATR Fri, Apr 23, 2021 19.60 20.17 19.59 19.81
7562 NASDAQ NATR Thu, Apr 22, 2021 19.45 19.91 19.38 19.54
7561 NASDAQ NATR Wed, Apr 21, 2021 19.75 20.24 19.26 19.38
7560 NASDAQ NATR Tue, Apr 20, 2021 19.66 19.96 19.55 19.71
7559 NASDAQ NATR Mon, Apr 19, 2021 20.23 20.23 19.41 19.60
7558 NASDAQ NATR Fri, Apr 16, 2021 20.25 20.35 19.87 20.23
7557 NASDAQ NATR Thu, Apr 15, 2021 20.44 20.45 19.92 20.31
7556 NASDAQ NATR Wed, Apr 14, 2021 19.60 20.50 19.53 20.46
7555 NASDAQ NATR Tue, Apr 13, 2021 19.78 19.93 19.45 19.55
7554 NASDAQ NATR Mon, Apr 12, 2021 19.55 19.75 19.30 19.64
7553 NASDAQ NATR Fri, Apr 9, 2021 20.00 20.00 19.30 19.55
7552 NASDAQ NATR Thu, Apr 8, 2021 19.74 20.00 19.46 20.00
7551 NASDAQ NATR Wed, Apr 7, 2021 20.19 20.38 19.39 19.66
7550 NASDAQ NATR Tue, Apr 6, 2021 19.89 20.41 19.72 20.13
7549 NASDAQ NATR Mon, Apr 5, 2021 19.51 19.83 19.00 19.80
7548 NASDAQ NATR Thu, Apr 1, 2021 19.93 19.93 19.14 19.50
7547 NASDAQ NATR Wed, Mar 31, 2021 18.95 19.96 18.95 19.96
7546 NASDAQ NATR Tue, Mar 30, 2021 18.59 19.11 18.57 18.95
7545 NASDAQ NATR Mon, Mar 29, 2021 18.15 19.24 18.15 18.58
7544 NASDAQ NATR Fri, Mar 26, 2021 18.16 18.74 17.81 18.25
7543 NASDAQ NATR Thu, Mar 25, 2021 18.60 19.44 18.13 18.89
7542 NASDAQ NATR Wed, Mar 24, 2021 20.20 20.50 18.93 18.93
7541 NASDAQ NATR Tue, Mar 23, 2021 20.58 21.36 20.01 20.11
7540 NASDAQ NATR Mon, Mar 22, 2021 20.44 20.50 19.86 20.47
7539 NASDAQ NATR Fri, Mar 19, 2021 20.08 20.45 19.75 20.16
7538 NASDAQ NATR Thu, Mar 18, 2021 20.10 20.45 19.56 19.83
7537 NASDAQ NATR Wed, Mar 17, 2021 20.02 20.55 19.76 19.87
7536 NASDAQ NATR Tue, Mar 16, 2021 18.98 19.96 18.62 19.88
7535 NASDAQ NATR Mon, Mar 15, 2021 19.20 19.20 18.80 18.97
7534 NASDAQ NATR Fri, Mar 12, 2021 19.33 19.33 18.68 18.98
7533 NASDAQ NATR Thu, Mar 11, 2021 17.99 19.65 17.82 19.45
7532 NASDAQ NATR Wed, Mar 10, 2021 17.69 17.98 17.59 17.96
7531 NASDAQ NATR Tue, Mar 9, 2021 18.00 18.00 17.45 17.61
7530 NASDAQ NATR Mon, Mar 8, 2021 17.95 17.98 17.55 17.88
7529 NASDAQ NATR Fri, Mar 5, 2021 17.31 17.87 17.07 17.84
7528 NASDAQ NATR Thu, Mar 4, 2021 17.52 17.52 16.90 17.13
7527 NASDAQ NATR Wed, Mar 3, 2021 17.85 17.98 17.42 17.45
7526 NASDAQ NATR Tue, Mar 2, 2021 17.72 17.99 17.63 17.66
7525 NASDAQ NATR Mon, Mar 1, 2021 16.79 18.16 16.65 17.74
7524 NASDAQ NATR Fri, Feb 26, 2021 17.00 17.00 16.32 16.48
7523 NASDAQ NATR Thu, Feb 25, 2021 17.46 17.59 17.00 17.01
7522 NASDAQ NATR Wed, Feb 24, 2021 17.00 18.15 16.86 17.27
7521 NASDAQ NATR Tue, Feb 23, 2021 16.56 17.10 15.78 17.00
7520 NASDAQ NATR Mon, Feb 22, 2021 17.27 17.35 16.61 16.65
7519 NASDAQ NATR Fri, Feb 19, 2021 17.60 17.84 17.31 17.46
7518 NASDAQ NATR Thu, Feb 18, 2021 17.68 17.70 17.39 17.70
7517 NASDAQ NATR Wed, Feb 17, 2021 17.94 17.94 17.25 17.72
7516 NASDAQ NATR Tue, Feb 16, 2021 17.99 17.99 17.61 17.98
7515 NASDAQ NATR Fri, Feb 12, 2021 17.98 18.00 17.78 17.98
7514 NASDAQ NATR Thu, Feb 11, 2021 17.59 18.09 17.39 17.92
7513 NASDAQ NATR Wed, Feb 10, 2021 17.55 17.60 16.98 17.51
7512 NASDAQ NATR Tue, Feb 9, 2021 17.00 17.70 16.60 17.55
7511 NASDAQ NATR Mon, Feb 8, 2021 16.76 16.93 16.36 16.90
7510 NASDAQ NATR Fri, Feb 5, 2021 16.68 16.85 16.32 16.54
7509 NASDAQ NATR Thu, Feb 4, 2021 16.39 16.73 16.28 16.60
7508 NASDAQ NATR Wed, Feb 3, 2021 17.57 17.60 16.18 16.44
7507 NASDAQ NATR Tue, Feb 2, 2021 17.04 17.78 16.90 17.36
7506 NASDAQ NATR Mon, Feb 1, 2021 16.32 17.05 16.31 16.93
7505 NASDAQ NATR Fri, Jan 29, 2021 16.21 16.29 16.04 16.05
7504 NASDAQ NATR Thu, Jan 28, 2021 15.90 16.28 15.83 16.23
7503 NASDAQ NATR Wed, Jan 27, 2021 15.56 16.17 15.31 15.90
7502 NASDAQ NATR Tue, Jan 26, 2021 15.90 16.04 15.38 15.93
7501 NASDAQ NATR Mon, Jan 25, 2021 16.15 16.17 15.90 15.95
7500 NASDAQ NATR Fri, Jan 22, 2021 15.50 16.19 15.50 16.15
7499 NASDAQ NATR Thu, Jan 21, 2021 15.51 15.60 15.35 15.50
7498 NASDAQ NATR Wed, Jan 20, 2021 15.61 15.61 15.22 15.45
7497 NASDAQ NATR Tue, Jan 19, 2021 15.64 15.64 15.41 15.59
7496 NASDAQ NATR Fri, Jan 15, 2021 15.08 15.68 14.73 15.48
7495 NASDAQ NATR Thu, Jan 14, 2021 15.20 15.20 15.07 15.09
7494 NASDAQ NATR Wed, Jan 13, 2021 15.25 15.25 15.00 15.19
7493 NASDAQ NATR Tue, Jan 12, 2021 15.20 15.55 15.06 15.25
7492 NASDAQ NATR Mon, Jan 11, 2021 15.71 15.71 15.06 15.13
7491 NASDAQ NATR Fri, Jan 8, 2021 16.00 16.14 15.60 15.71
7490 NASDAQ NATR Thu, Jan 7, 2021 16.51 16.51 15.52 15.98
7489 NASDAQ NATR Wed, Jan 6, 2021 15.40 16.99 15.40 16.51
7488 NASDAQ NATR Tue, Jan 5, 2021 14.61 15.80 14.55 15.13
7487 NASDAQ NATR Mon, Jan 4, 2021 15.21 15.21 14.35 14.47
7486 NASDAQ NATR Thu, Dec 31, 2020 15.00 15.19 14.78 14.95
7485 NASDAQ NATR Wed, Dec 30, 2020 14.62 15.15 14.62 14.87
7484 NASDAQ NATR Tue, Dec 29, 2020 14.75 14.76 14.32 14.62
7483 NASDAQ NATR Mon, Dec 28, 2020 14.95 14.97 14.60 14.77
7482 NASDAQ NATR Thu, Dec 24, 2020 14.92 14.95 14.57 14.60
7481 NASDAQ NATR Wed, Dec 23, 2020 15.07 15.13 14.55 14.93
7480 NASDAQ NATR Tue, Dec 22, 2020 15.03 15.20 14.76 14.96
7479 NASDAQ NATR Mon, Dec 21, 2020 14.50 15.18 14.29 14.89
7478 NASDAQ NATR Fri, Dec 18, 2020 13.91 14.68 13.50 14.42
7477 NASDAQ NATR Thu, Dec 17, 2020 13.92 14.29 13.56 14.03
7476 NASDAQ NATR Wed, Dec 16, 2020 13.81 14.00 13.75 13.76
7475 NASDAQ NATR Tue, Dec 15, 2020 13.67 13.84 13.48 13.69
7474 NASDAQ NATR Mon, Dec 14, 2020 13.45 13.64 13.36 13.42
7473 NASDAQ NATR Fri, Dec 11, 2020 13.45 13.66 13.08 13.25
7472 NASDAQ NATR Thu, Dec 10, 2020 13.21 13.52 12.70 13.36
7471 NASDAQ NATR Wed, Dec 9, 2020 13.32 13.78 13.01 13.17
7470 NASDAQ NATR Tue, Dec 8, 2020 12.88 13.63 12.87 13.20
7469 NASDAQ NATR Mon, Dec 7, 2020 13.02 13.04 12.44 12.77
7468 NASDAQ NATR Fri, Dec 4, 2020 12.35 12.92 12.35 12.83
7467 NASDAQ NATR Thu, Dec 3, 2020 12.41 13.00 12.41 12.69
7466 NASDAQ NATR Wed, Dec 2, 2020 12.67 12.70 12.26 12.59
7465 NASDAQ NATR Tue, Dec 1, 2020 12.79 12.79 12.07 12.49
7464 NASDAQ NATR Mon, Nov 30, 2020 12.66 12.71 12.32 12.43
7463 NASDAQ NATR Fri, Nov 27, 2020 12.55 12.76 12.41 12.64
7462 NASDAQ NATR Wed, Nov 25, 2020 12.60 12.74 12.31 12.41
7461 NASDAQ NATR Tue, Nov 24, 2020 12.74 12.98 12.64 12.76
7460 NASDAQ NATR Mon, Nov 23, 2020 12.35 12.83 12.27 12.67
7459 NASDAQ NATR Fri, Nov 20, 2020 12.07 12.38 12.06 12.25
7458 NASDAQ NATR Thu, Nov 19, 2020 12.28 12.60 12.00 12.18
7457 NASDAQ NATR Wed, Nov 18, 2020 12.74 12.74 12.20 12.38
7456 NASDAQ NATR Tue, Nov 17, 2020 11.86 13.00 11.86 12.74
7455 NASDAQ NATR Mon, Nov 16, 2020 11.84 12.22 11.67 12.06
7454 NASDAQ NATR Fri, Nov 13, 2020 11.30 11.86 11.30 11.59
7453 NASDAQ NATR Thu, Nov 12, 2020 11.14 11.47 10.96 11.12
7452 NASDAQ NATR Wed, Nov 11, 2020 10.98 11.28 10.91 11.19
7451 NASDAQ NATR Tue, Nov 10, 2020 10.83 11.22 10.35 11.04
7450 NASDAQ NATR Mon, Nov 9, 2020 10.55 11.05 10.00 10.00
7449 NASDAQ NATR Fri, Nov 6, 2020 10.36 10.59 9.86 9.99
7448 NASDAQ NATR Thu, Nov 5, 2020 10.26 10.60 10.22 10.36
7447 NASDAQ NATR Wed, Nov 4, 2020 10.52 10.98 10.03 10.14
7446 NASDAQ NATR Tue, Nov 3, 2020 10.50 10.93 10.32 10.76
7445 NASDAQ NATR Mon, Nov 2, 2020 10.65 10.66 10.40 10.55
7444 NASDAQ NATR Fri, Oct 30, 2020 10.64 11.00 10.31 10.42
7443 NASDAQ NATR Thu, Oct 29, 2020 10.83 10.91 10.38 10.91
7442 NASDAQ NATR Wed, Oct 28, 2020 10.72 10.72 10.23 10.49
7441 NASDAQ NATR Tue, Oct 27, 2020 11.00 11.10 10.87 10.93
7440 NASDAQ NATR Mon, Oct 26, 2020 10.76 10.95 10.76 10.88
7439 NASDAQ NATR Fri, Oct 23, 2020 10.99 11.97 10.93 10.99
7438 NASDAQ NATR Thu, Oct 22, 2020 11.31 11.31 10.93 10.93
7437 NASDAQ NATR Wed, Oct 21, 2020 11.63 11.87 11.11 11.21
7436 NASDAQ NATR Tue, Oct 20, 2020 11.62 11.93 11.55 11.72
7435 NASDAQ NATR Mon, Oct 19, 2020 12.03 12.03 11.46 11.46
7434 NASDAQ NATR Fri, Oct 16, 2020 12.25 12.35 12.17 12.21
7433 NASDAQ NATR Thu, Oct 15, 2020 11.91 12.41 11.74 12.32
7432 NASDAQ NATR Wed, Oct 14, 2020 12.31 12.31 12.02 12.04
7431 NASDAQ NATR Tue, Oct 13, 2020 12.17 12.50 12.17 12.38
7430 NASDAQ NATR Mon, Oct 12, 2020 12.20 12.38 12.14 12.38
7429 NASDAQ NATR Fri, Oct 9, 2020 12.20 12.35 12.08 12.14
7428 NASDAQ NATR Thu, Oct 8, 2020 12.20 12.20 11.87 12.10
7427 NASDAQ NATR Wed, Oct 7, 2020 12.20 12.20 12.00 12.13
7426 NASDAQ NATR Tue, Oct 6, 2020 12.14 12.38 11.93 12.07
7425 NASDAQ NATR Mon, Oct 5, 2020 12.05 12.05 11.64 11.98
7424 NASDAQ NATR Fri, Oct 2, 2020 11.99 12.04 11.79 11.99
7423 NASDAQ NATR Thu, Oct 1, 2020 11.94 12.05 11.69 12.05
7422 NASDAQ NATR Wed, Sep 30, 2020 11.36 11.89 11.36 11.57
7421 NASDAQ NATR Tue, Sep 29, 2020 11.07 11.42 10.87 11.42
7420 NASDAQ NATR Mon, Sep 28, 2020 11.29 11.51 11.00 11.08
7419 NASDAQ NATR Fri, Sep 25, 2020 10.99 11.35 10.99 11.18
7418 NASDAQ NATR Thu, Sep 24, 2020 10.91 11.15 10.80 10.94
7417 NASDAQ NATR Wed, Sep 23, 2020 11.33 11.49 10.86 10.98
7416 NASDAQ NATR Tue, Sep 22, 2020 11.04 11.65 10.72 11.40
7415 NASDAQ NATR Mon, Sep 21, 2020 12.62 13.22 10.92 10.94
7414 NASDAQ NATR Fri, Sep 18, 2020 12.64 13.44 12.37 12.61
7413 NASDAQ NATR Thu, Sep 17, 2020 12.75 13.17 12.01 12.48
7412 NASDAQ NATR Wed, Sep 16, 2020 13.12 13.45 12.63 12.79
7411 NASDAQ NATR Tue, Sep 15, 2020 13.10 13.43 12.88 12.96
7410 NASDAQ NATR Mon, Sep 14, 2020 12.56 13.23 12.56 12.94
7409 NASDAQ NATR Fri, Sep 11, 2020 12.42 13.50 12.42 12.55
7408 NASDAQ NATR Thu, Sep 10, 2020 12.76 13.24 12.12 12.25
7407 NASDAQ NATR Wed, Sep 9, 2020 11.90 13.49 11.76 12.73
7406 NASDAQ NATR Tue, Sep 8, 2020 10.92 11.90 10.90 11.70
7405 NASDAQ NATR Fri, Sep 4, 2020 11.00 11.08 10.74 11.03
7404 NASDAQ NATR Thu, Sep 3, 2020 11.00 11.28 10.61 10.81
7403 NASDAQ NATR Wed, Sep 2, 2020 11.31 11.49 11.20 11.32
7402 NASDAQ NATR Tue, Sep 1, 2020 11.27 11.45 10.82 11.38
7401 NASDAQ NATR Mon, Aug 31, 2020 11.14 11.41 11.00 11.04
7400 NASDAQ NATR Fri, Aug 28, 2020 10.96 11.13 10.85 11.13
7399 NASDAQ NATR Thu, Aug 27, 2020 11.00 11.04 10.90 10.95
7398 NASDAQ NATR Wed, Aug 26, 2020 11.20 11.23 10.89 10.89
7397 NASDAQ NATR Tue, Aug 25, 2020 10.81 11.06 10.81 10.95
7396 NASDAQ NATR Mon, Aug 24, 2020 11.00 11.16 10.96 10.96
7395 NASDAQ NATR Fri, Aug 21, 2020 10.90 11.00 10.78 10.92
7394 NASDAQ NATR Thu, Aug 20, 2020 10.98 11.03 10.85 11.00
7393 NASDAQ NATR Wed, Aug 19, 2020 11.00 11.17 10.99 11.05
7392 NASDAQ NATR Tue, Aug 18, 2020 10.54 11.11 10.54 11.09
7391 NASDAQ NATR Mon, Aug 17, 2020 10.97 11.27 10.97 11.09
7390 NASDAQ NATR Fri, Aug 14, 2020 11.17 11.42 10.95 10.99
7389 NASDAQ NATR Thu, Aug 13, 2020 11.08 11.72 11.08 11.29
7388 NASDAQ NATR Wed, Aug 12, 2020 11.09 11.25 10.75 11.12
7387 NASDAQ NATR Tue, Aug 11, 2020 11.00 11.23 10.95 11.09
7386 NASDAQ NATR Mon, Aug 10, 2020 10.74 11.38 10.60 10.88
7385 NASDAQ NATR Fri, Aug 7, 2020 10.00 10.89 10.00 10.74
7384 NASDAQ NATR Thu, Aug 6, 2020 10.00 10.07 9.86 10.07
7383 NASDAQ NATR Wed, Aug 5, 2020 9.91 9.98 9.71 9.85
7382 NASDAQ NATR Tue, Aug 4, 2020 10.40 10.40 9.76 9.76
7381 NASDAQ NATR Mon, Aug 3, 2020 9.60 10.56 9.60 10.38
7380 NASDAQ NATR Fri, Jul 31, 2020 9.71 9.79 9.40 9.51
7379 NASDAQ NATR Thu, Jul 30, 2020 9.59 9.75 9.53 9.69
7378 NASDAQ NATR Wed, Jul 29, 2020 9.86 9.86 9.58 9.71
7377 NASDAQ NATR Tue, Jul 28, 2020 9.89 9.90 9.57 9.68
7376 NASDAQ NATR Mon, Jul 27, 2020 9.36 9.98 9.30 9.85
7375 NASDAQ NATR Fri, Jul 24, 2020 9.69 9.76 9.29 9.54
7374 NASDAQ NATR Thu, Jul 23, 2020 9.77 9.99 9.57 9.83
7373 NASDAQ NATR Wed, Jul 22, 2020 9.62 9.84 9.25 9.69
7372 NASDAQ NATR Tue, Jul 21, 2020 10.00 10.00 9.68 9.79
7371 NASDAQ NATR Mon, Jul 20, 2020 10.00 10.07 9.78 9.99
7370 NASDAQ NATR Fri, Jul 17, 2020 9.78 10.12 9.78 10.00
7369 NASDAQ NATR Thu, Jul 16, 2020 10.00 10.00 9.78 9.86
7368 NASDAQ NATR Wed, Jul 15, 2020 9.87 10.45 9.65 10.02
7367 NASDAQ NATR Tue, Jul 14, 2020 9.42 9.71 9.40 9.66
7366 NASDAQ NATR Mon, Jul 13, 2020 9.35 9.84 9.27 9.54
7365 NASDAQ NATR Fri, Jul 10, 2020 8.98 9.36 8.90 9.28
7364 NASDAQ NATR Thu, Jul 9, 2020 8.90 9.13 8.86 9.00
7363 NASDAQ NATR Wed, Jul 8, 2020 9.20 9.30 8.75 8.95
7362 NASDAQ NATR Tue, Jul 7, 2020 9.06 9.40 8.83 9.20
7361 NASDAQ NATR Mon, Jul 6, 2020 9.37 9.60 9.18 9.38
7360 NASDAQ NATR Thu, Jul 2, 2020 8.95 9.18 8.95 9.10
7359 NASDAQ NATR Wed, Jul 1, 2020 9.05 9.68 8.95 9.00
7358 NASDAQ NATR Tue, Jun 30, 2020 8.63 9.13 8.63 9.01
7357 NASDAQ NATR Mon, Jun 29, 2020 8.00 9.27 7.97 9.02
7356 NASDAQ NATR Fri, Jun 26, 2020 8.73 8.73 7.56 7.93
7355 NASDAQ NATR Thu, Jun 25, 2020 8.60 8.85 8.45 8.80
7354 NASDAQ NATR Wed, Jun 24, 2020 8.72 8.90 8.56 8.59
7353 NASDAQ NATR Tue, Jun 23, 2020 8.91 9.05 8.85 8.87
7352 NASDAQ NATR Mon, Jun 22, 2020 8.65 8.99 8.65 8.82
7351 NASDAQ NATR Fri, Jun 19, 2020 9.07 9.07 8.62 8.65
7350 NASDAQ NATR Thu, Jun 18, 2020 8.84 9.04 8.83 8.92
7349 NASDAQ NATR Wed, Jun 17, 2020 9.00 9.28 8.82 8.83
7348 NASDAQ NATR Tue, Jun 16, 2020 9.26 9.34 8.85 9.08
7347 NASDAQ NATR Mon, Jun 15, 2020 8.81 9.14 8.81 9.00
7346 NASDAQ NATR Fri, Jun 12, 2020 9.03 9.19 8.82 8.99
7345 NASDAQ NATR Thu, Jun 11, 2020 9.22 9.22 8.90 8.90
7344 NASDAQ NATR Wed, Jun 10, 2020 9.79 9.79 9.50 9.50
7343 NASDAQ NATR Tue, Jun 9, 2020 9.92 9.99 9.79 9.79
7342 NASDAQ NATR Mon, Jun 8, 2020 10.00 10.34 9.96 9.99
7341 NASDAQ NATR Fri, Jun 5, 2020 10.24 10.24 9.87 9.92
7340 NASDAQ NATR Thu, Jun 4, 2020 9.60 10.33 9.50 9.90
7339 NASDAQ NATR Wed, Jun 3, 2020 9.65 10.32 9.43 9.85
7338 NASDAQ NATR Tue, Jun 2, 2020 9.49 9.59 9.25 9.36
7337 NASDAQ NATR Mon, Jun 1, 2020 9.53 9.64 9.35 9.35
7336 NASDAQ NATR Fri, May 29, 2020 9.51 9.82 9.50 9.70
7335 NASDAQ NATR Thu, May 28, 2020 9.45 9.82 9.44 9.49
7334 NASDAQ NATR Wed, May 27, 2020 9.40 9.40 9.15 9.36
7333 NASDAQ NATR Tue, May 26, 2020 9.35 9.35 9.07 9.11
7332 NASDAQ NATR Fri, May 22, 2020 9.01 9.15 8.75 8.91
7331 NASDAQ NATR Thu, May 21, 2020 8.97 9.22 8.95 8.96
7330 NASDAQ NATR Wed, May 20, 2020 8.91 9.24 8.86 9.07
7329 NASDAQ NATR Tue, May 19, 2020 8.77 8.98 8.65 8.75
7328 NASDAQ NATR Mon, May 18, 2020 9.40 10.00 8.84 9.02
7327 NASDAQ NATR Fri, May 15, 2020 8.67 9.30 8.37 9.05
7326 NASDAQ NATR Thu, May 14, 2020 8.38 8.64 8.27 8.49
7325 NASDAQ NATR Wed, May 13, 2020 8.71 9.37 8.39 8.55
7324 NASDAQ NATR Tue, May 12, 2020 9.49 9.49 8.57 8.95
7323 NASDAQ NATR Mon, May 11, 2020 8.55 9.45 8.55 8.89
7322 NASDAQ NATR Fri, May 8, 2020 8.49 8.93 8.18 8.81
7321 NASDAQ NATR Thu, May 7, 2020 8.25 8.52 8.00 8.30
7320 NASDAQ NATR Wed, May 6, 2020 8.58 8.58 8.05 8.05
7319 NASDAQ NATR Tue, May 5, 2020 8.69 8.79 8.10 8.14
7318 NASDAQ NATR Mon, May 4, 2020 8.10 8.30 8.00 8.20
7317 NASDAQ NATR Fri, May 1, 2020 8.58 8.58 8.15 8.29
7316 NASDAQ NATR Thu, Apr 30, 2020 8.88 8.88 8.61 8.80
7315 NASDAQ NATR Wed, Apr 29, 2020 8.25 9.79 8.25 9.30
7314 NASDAQ NATR Tue, Apr 28, 2020 8.47 8.50 8.04 8.38
7313 NASDAQ NATR Mon, Apr 27, 2020 8.55 8.57 8.15 8.20
7312 NASDAQ NATR Fri, Apr 24, 2020 8.29 8.54 8.00 8.48
7311 NASDAQ NATR Thu, Apr 23, 2020 8.13 8.56 7.98 8.27
7310 NASDAQ NATR Wed, Apr 22, 2020 8.18 8.50 7.92 8.50
7309 NASDAQ NATR Tue, Apr 21, 2020 7.70 8.39 7.70 8.18
7308 NASDAQ NATR Mon, Apr 20, 2020 8.30 8.51 7.93 7.96
7307 NASDAQ NATR Fri, Apr 17, 2020 8.18 8.36 8.03 8.26
7306 NASDAQ NATR Thu, Apr 16, 2020 7.94 7.99 7.69 7.99
7305 NASDAQ NATR Wed, Apr 15, 2020 8.01 8.16 7.72 7.80
7304 NASDAQ NATR Tue, Apr 14, 2020 7.53 8.54 7.53 8.38
7303 NASDAQ NATR Mon, Apr 13, 2020 7.96 8.08 7.90 7.90
7302 NASDAQ NATR Thu, Apr 9, 2020 8.01 8.25 7.97 8.19
7301 NASDAQ NATR Wed, Apr 8, 2020 7.51 8.10 7.51 7.91
7300 NASDAQ NATR Tue, Apr 7, 2020 7.95 8.07 7.46 7.62
7299 NASDAQ NATR Mon, Apr 6, 2020 7.26 8.04 7.17 8.04
7298 NASDAQ NATR Fri, Apr 3, 2020 7.64 7.66 7.13 7.21
7297 NASDAQ NATR Thu, Apr 2, 2020 7.29 7.67 7.29 7.62
7296 NASDAQ NATR Wed, Apr 1, 2020 8.00 8.00 7.15 7.25
7295 NASDAQ NATR Tue, Mar 31, 2020 8.06 8.30 7.75 8.13
7294 NASDAQ NATR Mon, Mar 30, 2020 8.32 8.39 8.01 8.30
7293 NASDAQ NATR Fri, Mar 27, 2020 8.76 8.76 7.81 7.83
7292 NASDAQ NATR Thu, Mar 26, 2020 7.31 9.15 7.27 9.08
7291 NASDAQ NATR Wed, Mar 25, 2020 7.69 7.69 7.36 7.52
7290 NASDAQ NATR Tue, Mar 24, 2020 6.63 7.75 6.56 7.75
7289 NASDAQ NATR Mon, Mar 23, 2020 7.43 7.68 6.40 6.56
7288 NASDAQ NATR Fri, Mar 20, 2020 7.15 7.38 5.50 7.38
7287 NASDAQ NATR Thu, Mar 19, 2020 6.05 7.20 6.05 7.20
7286 NASDAQ NATR Wed, Mar 18, 2020 7.00 7.22 6.10 6.11
7285 NASDAQ NATR Tue, Mar 17, 2020 7.01 7.33 6.78 6.94
7284 NASDAQ NATR Mon, Mar 16, 2020 7.46 7.99 7.00 7.01
7283 NASDAQ NATR Fri, Mar 13, 2020 7.29 7.71 7.29 7.46
7282 NASDAQ NATR Thu, Mar 12, 2020 7.70 7.85 7.25 7.25
7281 NASDAQ NATR Wed, Mar 11, 2020 8.05 8.19 7.70 7.79
7280 NASDAQ NATR Tue, Mar 10, 2020 8.00 8.27 7.70 8.18
7279 NASDAQ NATR Mon, Mar 9, 2020 7.59 7.93 7.59 7.81
7278 NASDAQ NATR Fri, Mar 6, 2020 8.31 8.31 8.00 8.01
7277 NASDAQ NATR Thu, Mar 5, 2020 8.15 8.32 7.99 8.06
7276 NASDAQ NATR Wed, Mar 4, 2020 8.07 8.32 8.00 8.32
7275 NASDAQ NATR Tue, Mar 3, 2020 8.33 8.55 7.80 7.90
7274 NASDAQ NATR Mon, Mar 2, 2020 8.50 8.64 8.00 8.20
7273 NASDAQ NATR Fri, Feb 28, 2020 8.99 9.15 8.12 8.20
7272 NASDAQ NATR Thu, Feb 27, 2020 9.31 9.31 9.14 9.22
7271 NASDAQ NATR Wed, Feb 26, 2020 9.41 9.94 9.28 9.50
7270 NASDAQ NATR Tue, Feb 25, 2020 10.17 10.17 9.35 9.35
7269 NASDAQ NATR Mon, Feb 24, 2020 10.00 10.20 10.00 10.04
7268 NASDAQ NATR Fri, Feb 21, 2020 10.51 10.51 10.02 10.29
7267 NASDAQ NATR Thu, Feb 20, 2020 10.15 10.41 9.93 10.41
7266 NASDAQ NATR Wed, Feb 19, 2020 10.40 10.44 10.18 10.23
7265 NASDAQ NATR Tue, Feb 18, 2020 10.47 10.50 10.43 10.44
7264 NASDAQ NATR Fri, Feb 14, 2020 10.85 10.85 10.54 10.58
7263 NASDAQ NATR Thu, Feb 13, 2020 10.40 10.85 10.40 10.85
7262 NASDAQ NATR Wed, Feb 12, 2020 10.54 10.63 10.39 10.55
7261 NASDAQ NATR Tue, Feb 11, 2020 10.29 10.60 10.29 10.44
7260 NASDAQ NATR Mon, Feb 10, 2020 10.35 10.62 10.31 10.33
7259 NASDAQ NATR Fri, Feb 7, 2020 10.28 10.50 10.19 10.40
7258 NASDAQ NATR Thu, Feb 6, 2020 10.09 10.38 10.02 10.25
7257 NASDAQ NATR Wed, Feb 5, 2020 9.96 10.10 9.90 10.08
7256 NASDAQ NATR Tue, Feb 4, 2020 9.95 9.96 9.89 9.89
7255 NASDAQ NATR Mon, Feb 3, 2020 9.81 9.97 9.81 9.89
7254 NASDAQ NATR Fri, Jan 31, 2020 9.90 9.95 9.56 9.56
7253 NASDAQ NATR Thu, Jan 30, 2020 9.94 9.95 9.90 9.94
7252 NASDAQ NATR Wed, Jan 29, 2020 9.92 10.00 9.87 9.97
7251 NASDAQ NATR Tue, Jan 28, 2020 9.93 9.93 9.86 9.92
7250 NASDAQ NATR Mon, Jan 27, 2020 9.96 10.07 9.93 9.93
7249 NASDAQ NATR Fri, Jan 24, 2020 10.00 10.07 9.77 9.97
7248 NASDAQ NATR Thu, Jan 23, 2020 9.84 10.05 9.80 9.85
7247 NASDAQ NATR Wed, Jan 22, 2020 9.80 10.00 9.75 9.85
7246 NASDAQ NATR Tue, Jan 21, 2020 9.78 9.98 9.78 9.85
7245 NASDAQ NATR Fri, Jan 17, 2020 9.79 9.81 9.72 9.73
7244 NASDAQ NATR Thu, Jan 16, 2020 9.75 9.78 9.66 9.66
7243 NASDAQ NATR Wed, Jan 15, 2020 9.60 9.75 9.50 9.60
7242 NASDAQ NATR Tue, Jan 14, 2020 9.57 9.58 9.49 9.50
7241 NASDAQ NATR Mon, Jan 13, 2020 9.36 9.52 9.36 9.51
7240 NASDAQ NATR Fri, Jan 10, 2020 9.42 9.64 9.23 9.46
7239 NASDAQ NATR Thu, Jan 9, 2020 9.57 9.59 9.40 9.53
7238 NASDAQ NATR Wed, Jan 8, 2020 9.46 9.60 9.16 9.45
7237 NASDAQ NATR Tue, Jan 7, 2020 9.36 9.54 9.28 9.50
7236 NASDAQ NATR Mon, Jan 6, 2020 8.91 9.50 8.91 9.32
7235 NASDAQ NATR Fri, Jan 3, 2020 8.91 9.14 8.91 9.14
7234 NASDAQ NATR Thu, Jan 2, 2020 9.02 9.14 8.75 9.04
7233 NASDAQ NATR Tue, Dec 31, 2019 8.55 8.98 8.55 8.93
7232 NASDAQ NATR Mon, Dec 30, 2019 8.83 9.02 8.50 8.62
7231 NASDAQ NATR Fri, Dec 27, 2019 9.26 9.26 8.61 8.86
7230 NASDAQ NATR Thu, Dec 26, 2019 9.14 9.17 9.12 9.13
7229 NASDAQ NATR Tue, Dec 24, 2019 9.16 9.22 9.02 9.12
7228 NASDAQ NATR Mon, Dec 23, 2019 9.35 9.35 8.91 8.94
7227 NASDAQ NATR Fri, Dec 20, 2019 9.44 9.57 9.30 9.32
7226 NASDAQ NATR Thu, Dec 19, 2019 9.48 9.50 9.35 9.42
7225 NASDAQ NATR Wed, Dec 18, 2019 9.48 9.55 9.48 9.50
7224 NASDAQ NATR Tue, Dec 17, 2019 9.40 9.50 9.36 9.49
7223 NASDAQ NATR Mon, Dec 16, 2019 9.60 9.60 9.40 9.45
7222 NASDAQ NATR Fri, Dec 13, 2019 9.68 9.75 9.43 9.46
7221 NASDAQ NATR Thu, Dec 12, 2019 9.76 9.86 9.55 9.60
7220 NASDAQ NATR Wed, Dec 11, 2019 9.51 9.98 9.51 9.88
7219 NASDAQ NATR Tue, Dec 10, 2019 9.67 9.78 9.43 9.69
7218 NASDAQ NATR Mon, Dec 9, 2019 9.83 9.83 9.67 9.67
7217 NASDAQ NATR Fri, Dec 6, 2019 9.98 10.01 9.77 9.77
7216 NASDAQ NATR Thu, Dec 5, 2019 9.67 9.91 9.67 9.78
7215 NASDAQ NATR Wed, Dec 4, 2019 9.94 9.96 9.77 9.82
7214 NASDAQ NATR Tue, Dec 3, 2019 9.58 9.95 9.43 9.82
7213 NASDAQ NATR Mon, Dec 2, 2019 10.01 10.01 9.70 9.83
7212 NASDAQ NATR Fri, Nov 29, 2019 9.92 10.10 9.90 10.05
7211 NASDAQ NATR Wed, Nov 27, 2019 10.11 10.11 9.74 10.04
7210 NASDAQ NATR Tue, Nov 26, 2019 10.20 10.20 9.84 9.84
7209 NASDAQ NATR Mon, Nov 25, 2019 9.69 10.27 9.69 10.27
7208 NASDAQ NATR Fri, Nov 22, 2019 9.94 9.94 9.68 9.68
7207 NASDAQ NATR Thu, Nov 21, 2019 9.70 9.72 9.50 9.66
7206 NASDAQ NATR Wed, Nov 20, 2019 9.65 9.84 9.65 9.73
7205 NASDAQ NATR Tue, Nov 19, 2019 9.79 9.79 9.61 9.75
7204 NASDAQ NATR Mon, Nov 18, 2019 9.63 9.80 9.60 9.65
7203 NASDAQ NATR Fri, Nov 15, 2019 9.63 9.75 9.52 9.71
7202 NASDAQ NATR Thu, Nov 14, 2019 9.64 9.69 9.41 9.55
7201 NASDAQ NATR Wed, Nov 13, 2019 9.30 9.60 9.30 9.42
7200 NASDAQ NATR Tue, Nov 12, 2019 9.25 9.50 9.19 9.37
7199 NASDAQ NATR Mon, Nov 11, 2019 9.30 9.38 9.22 9.33
7198 NASDAQ NATR Fri, Nov 8, 2019 9.65 9.92 9.21 9.32
7197 NASDAQ NATR Thu, Nov 7, 2019 10.10 10.10 9.71 10.10
7196 NASDAQ NATR Wed, Nov 6, 2019 9.99 9.99 9.70 9.91
7195 NASDAQ NATR Tue, Nov 5, 2019 9.73 10.10 9.73 10.10
7194 NASDAQ NATR Mon, Nov 4, 2019 9.85 9.85 9.60 9.73
7193 NASDAQ NATR Fri, Nov 1, 2019 9.50 9.93 9.31 9.91
7192 NASDAQ NATR Thu, Oct 31, 2019 9.50 9.50 9.40 9.44
7191 NASDAQ NATR Wed, Oct 30, 2019 9.39 9.50 9.39 9.50
7190 NASDAQ NATR Tue, Oct 29, 2019 9.31 9.39 9.31 9.39
7189 NASDAQ NATR Mon, Oct 28, 2019 9.37 9.51 9.32 9.43
7188 NASDAQ NATR Fri, Oct 25, 2019 9.40 9.50 9.31 9.39
7187 NASDAQ NATR Thu, Oct 24, 2019 9.50 9.50 9.20 9.23
7186 NASDAQ NATR Wed, Oct 23, 2019 9.49 9.49 9.35 9.40
7185 NASDAQ NATR Tue, Oct 22, 2019 9.37 9.44 9.27 9.31
7184 NASDAQ NATR Mon, Oct 21, 2019 9.46 9.53 9.29 9.37
7183 NASDAQ NATR Fri, Oct 18, 2019 9.19 9.47 9.19 9.31
7182 NASDAQ NATR Thu, Oct 17, 2019 9.30 9.50 9.30 9.32
7181 NASDAQ NATR Wed, Oct 16, 2019 9.30 9.45 9.14 9.32
7180 NASDAQ NATR Tue, Oct 15, 2019 8.95 9.50 8.95 9.44
7179 NASDAQ NATR Mon, Oct 14, 2019 9.18 9.25 8.71 8.85
7178 NASDAQ NATR Fri, Oct 11, 2019 9.11 9.25 8.94 9.23
7177 NASDAQ NATR Thu, Oct 10, 2019 9.14 9.14 8.77 8.80
7176 NASDAQ NATR Wed, Oct 9, 2019 8.90 9.10 8.58 8.86
7175 NASDAQ NATR Tue, Oct 8, 2019 8.86 8.86 8.40 8.44
7174 NASDAQ NATR Mon, Oct 7, 2019 8.15 8.75 8.15 8.59
7173 NASDAQ NATR Fri, Oct 4, 2019 8.14 8.42 7.99 8.10
7172 NASDAQ NATR Thu, Oct 3, 2019 8.22 8.40 8.00 8.13
7171 NASDAQ NATR Wed, Oct 2, 2019 8.50 8.55 8.31 8.34
7170 NASDAQ NATR Tue, Oct 1, 2019 8.45 8.78 8.31 8.47
7169 NASDAQ NATR Mon, Sep 30, 2019 8.92 9.00 8.22 8.29
7168 NASDAQ NATR Fri, Sep 27, 2019 8.84 9.25 8.84 8.88
7167 NASDAQ NATR Thu, Sep 26, 2019 9.32 9.32 8.83 8.83
7166 NASDAQ NATR Wed, Sep 25, 2019 9.26 9.29 9.06 9.08
7165 NASDAQ NATR Tue, Sep 24, 2019 9.47 9.57 9.20 9.20
7164 NASDAQ NATR Mon, Sep 23, 2019 9.65 9.66 9.35 9.47
7163 NASDAQ NATR Fri, Sep 20, 2019 9.74 9.74 9.50 9.50
7162 NASDAQ NATR Thu, Sep 19, 2019 9.80 9.80 9.70 9.70
7161 NASDAQ NATR Wed, Sep 18, 2019 9.80 9.80 9.63 9.78
7160 NASDAQ NATR Tue, Sep 17, 2019 9.98 9.98 9.78 9.78
7159 NASDAQ NATR Mon, Sep 16, 2019 10.00 10.00 9.57 9.86
7158 NASDAQ NATR Fri, Sep 13, 2019 9.82 10.10 9.42 10.01
7157 NASDAQ NATR Thu, Sep 12, 2019 9.66 9.85 9.05 9.74
7156 NASDAQ NATR Wed, Sep 11, 2019 9.50 9.84 9.44 9.80
7155 NASDAQ NATR Tue, Sep 10, 2019 9.22 9.49 9.22 9.45
7154 NASDAQ NATR Mon, Sep 9, 2019 8.98 9.13 8.66 9.13
7153 NASDAQ NATR Fri, Sep 6, 2019 9.60 9.70 8.71 8.71
7152 NASDAQ NATR Thu, Sep 5, 2019 9.03 9.19 8.76 9.07
7151 NASDAQ NATR Wed, Sep 4, 2019 8.90 9.05 8.79 9.02
7150 NASDAQ NATR Tue, Sep 3, 2019 9.29 9.29 8.69 8.78
7149 NASDAQ NATR Fri, Aug 30, 2019 9.52 9.69 9.06 9.41
7148 NASDAQ NATR Thu, Aug 29, 2019 9.30 9.61 9.30 9.52
7147 NASDAQ NATR Wed, Aug 28, 2019 9.00 9.34 9.00 9.34
7146 NASDAQ NATR Tue, Aug 27, 2019 9.19 9.26 8.90 9.09
7145 NASDAQ NATR Mon, Aug 26, 2019 8.94 9.30 8.94 9.29
7144 NASDAQ NATR Fri, Aug 23, 2019 8.84 9.03 8.82 8.95
7143 NASDAQ NATR Thu, Aug 22, 2019 9.10 9.24 8.98 9.05
7142 NASDAQ NATR Wed, Aug 21, 2019 9.09 9.10 8.58 9.00
7141 NASDAQ NATR Tue, Aug 20, 2019 9.37 9.37 9.01 9.07
7140 NASDAQ NATR Mon, Aug 19, 2019 9.00 9.35 8.82 9.14
7139 NASDAQ NATR Fri, Aug 16, 2019 9.10 9.21 8.89 9.00
7138 NASDAQ NATR Thu, Aug 15, 2019 8.91 9.16 8.90 9.00
7137 NASDAQ NATR Wed, Aug 14, 2019 8.97 9.08 8.75 8.76
7136 NASDAQ NATR Tue, Aug 13, 2019 9.21 9.34 9.06 9.32
7135 NASDAQ NATR Mon, Aug 12, 2019 8.92 9.29 8.80 9.07
7134 NASDAQ NATR Fri, Aug 9, 2019 9.29 9.29 8.56 8.80
7133 NASDAQ NATR Thu, Aug 8, 2019 9.16 9.45 8.99 9.19
7132 NASDAQ NATR Wed, Aug 7, 2019 8.63 9.19 8.63 8.72
7131 NASDAQ NATR Tue, Aug 6, 2019 8.81 8.99 8.72 8.72
7130 NASDAQ NATR Mon, Aug 5, 2019 8.88 9.06 8.55 8.65
7129 NASDAQ NATR Fri, Aug 2, 2019 9.10 9.28 8.89 9.01
7128 NASDAQ NATR Thu, Aug 1, 2019 9.19 9.30 9.11 9.23
7127 NASDAQ NATR Wed, Jul 31, 2019 9.26 9.40 8.99 9.03
7126 NASDAQ NATR Tue, Jul 30, 2019 8.99 9.45 8.99 9.29
7125 NASDAQ NATR Mon, Jul 29, 2019 9.07 9.20 8.85 8.97
7124 NASDAQ NATR Fri, Jul 26, 2019 8.73 9.11 8.73 9.07
7123 NASDAQ NATR Thu, Jul 25, 2019 9.20 9.20 8.88 9.00
7122 NASDAQ NATR Wed, Jul 24, 2019 9.26 9.30 9.20 9.20
7121 NASDAQ NATR Tue, Jul 23, 2019 9.25 9.30 9.09 9.30
7120 NASDAQ NATR Mon, Jul 22, 2019 8.95 9.02 8.95 9.02
7119 NASDAQ NATR Fri, Jul 19, 2019 8.96 9.29 8.96 9.06
7118 NASDAQ NATR Thu, Jul 18, 2019 8.99 9.15 8.92 9.10
7117 NASDAQ NATR Wed, Jul 17, 2019 8.75 8.90 8.71 8.75
7116 NASDAQ NATR Tue, Jul 16, 2019 8.78 8.84 8.64 8.80
7115 NASDAQ NATR Mon, Jul 15, 2019 8.75 8.83 8.61 8.64
7114 NASDAQ NATR Fri, Jul 12, 2019 9.02 9.28 8.75 8.75
7113 NASDAQ NATR Thu, Jul 11, 2019 9.29 9.35 9.01 9.12
7112 NASDAQ NATR Wed, Jul 10, 2019 9.07 9.21 8.95 9.10
7111 NASDAQ NATR Tue, Jul 9, 2019 9.12 9.30 8.87 9.06
7110 NASDAQ NATR Mon, Jul 8, 2019 8.96 9.49 8.96 9.18
7109 NASDAQ NATR Fri, Jul 5, 2019 8.62 8.91 8.62 8.91
7108 NASDAQ NATR Wed, Jul 3, 2019 8.50 8.75 8.50 8.75
7107 NASDAQ NATR Tue, Jul 2, 2019 9.44 9.44 8.40 8.47
7106 NASDAQ NATR Mon, Jul 1, 2019 9.34 9.50 9.09 9.28
7105 NASDAQ NATR Fri, Jun 28, 2019 8.70 9.45 8.70 9.29
7104 NASDAQ NATR Thu, Jun 27, 2019 8.67 8.85 8.42 8.64
7103 NASDAQ NATR Wed, Jun 26, 2019 8.59 8.93 8.59 8.61
7102 NASDAQ NATR Tue, Jun 25, 2019 8.42 8.59 8.42 8.49
7101 NASDAQ NATR Mon, Jun 24, 2019 8.83 8.83 8.26 8.30
7100 NASDAQ NATR Fri, Jun 21, 2019 8.73 9.02 8.70 8.85
7099 NASDAQ NATR Thu, Jun 20, 2019 9.11 9.11 8.81 8.81
7098 NASDAQ NATR Wed, Jun 19, 2019 8.80 9.33 8.80 9.18
7097 NASDAQ NATR Tue, Jun 18, 2019 9.33 9.33 8.79 8.87
7096 NASDAQ NATR Mon, Jun 17, 2019 8.96 9.08 8.88 9.02
7095 NASDAQ NATR Fri, Jun 14, 2019 9.03 9.34 9.03 9.17
7094 NASDAQ NATR Thu, Jun 13, 2019 9.10 9.35 8.96 9.11
7093 NASDAQ NATR Wed, Jun 12, 2019 9.14 9.45 8.13 9.10
7092 NASDAQ NATR Tue, Jun 11, 2019 9.53 9.53 9.13 9.13
7091 NASDAQ NATR Mon, Jun 10, 2019 9.46 9.46 9.22 9.40
7090 NASDAQ NATR Fri, Jun 7, 2019 9.22 9.50 9.04 9.14
7089 NASDAQ NATR Thu, Jun 6, 2019 8.95 9.39 8.95 9.17
7088 NASDAQ NATR Wed, Jun 5, 2019 9.21 9.40 8.94 9.11
7087 NASDAQ NATR Tue, Jun 4, 2019 9.29 9.29 8.84 9.26
7086 NASDAQ NATR Mon, Jun 3, 2019 9.46 9.60 8.98 9.10
7085 NASDAQ NATR Fri, May 31, 2019 9.42 9.64 9.42 9.63
7084 NASDAQ NATR Thu, May 30, 2019 9.47 9.70 9.42 9.64
7083 NASDAQ NATR Wed, May 29, 2019 9.60 9.70 9.51 9.55
7082 NASDAQ NATR Tue, May 28, 2019 9.53 9.60 9.39 9.55
7081 NASDAQ NATR Fri, May 24, 2019 9.30 9.67 9.30 9.60
7080 NASDAQ NATR Thu, May 23, 2019 9.92 9.92 9.34 9.69
7079 NASDAQ NATR Wed, May 22, 2019 9.97 10.10 9.71 9.90
7078 NASDAQ NATR Tue, May 21, 2019 9.78 9.95 9.46 9.95
7077 NASDAQ NATR Mon, May 20, 2019 9.49 9.90 9.11 9.44
7076 NASDAQ NATR Fri, May 17, 2019 9.91 9.91 9.36 9.45
7075 NASDAQ NATR Thu, May 16, 2019 9.45 10.13 9.45 9.92
7074 NASDAQ NATR Wed, May 15, 2019 9.79 9.80 9.45 9.80
7073 NASDAQ NATR Tue, May 14, 2019 9.42 9.79 9.42 9.79
7072 NASDAQ NATR Mon, May 13, 2019 9.36 9.61 9.30 9.30
7071 NASDAQ NATR Fri, May 10, 2019 9.75 9.82 9.51 9.75
7070 NASDAQ NATR Thu, May 9, 2019 9.82 9.93 9.34 9.34
7069 NASDAQ NATR Wed, May 8, 2019 9.81 9.81 9.42 9.59
7068 NASDAQ NATR Tue, May 7, 2019 9.64 10.00 9.30 9.74
7067 NASDAQ NATR Mon, May 6, 2019 8.87 9.74 8.87 9.64
7066 NASDAQ NATR Fri, May 3, 2019 8.86 9.71 8.86 9.62
7065 NASDAQ NATR Thu, May 2, 2019 9.18 9.18 8.87 8.93
7064 NASDAQ NATR Wed, May 1, 2019 9.04 9.15 8.77 9.02
7063 NASDAQ NATR Tue, Apr 30, 2019 8.85 9.00 8.73 9.00
7062 NASDAQ NATR Mon, Apr 29, 2019 9.02 9.10 8.78 8.85
7061 NASDAQ NATR Fri, Apr 26, 2019 9.14 9.14 9.02 9.02
7060 NASDAQ NATR Thu, Apr 25, 2019 9.52 9.59 9.14 9.14
7059 NASDAQ NATR Wed, Apr 24, 2019 9.30 9.65 8.95 9.28
7058 NASDAQ NATR Tue, Apr 23, 2019 9.60 9.67 9.25 9.50
7057 NASDAQ NATR Mon, Apr 22, 2019 9.48 9.75 9.47 9.56
7056 NASDAQ NATR Thu, Apr 18, 2019 9.29 9.60 9.15 9.45
7055 NASDAQ NATR Wed, Apr 17, 2019 9.73 9.73 9.28 9.31
7054 NASDAQ NATR Tue, Apr 16, 2019 9.52 9.93 9.52 9.57
7053 NASDAQ NATR Mon, Apr 15, 2019 9.30 9.95 9.23 9.42
7052 NASDAQ NATR Fri, Apr 12, 2019 9.65 9.79 9.24 9.33
7051 NASDAQ NATR Thu, Apr 11, 2019 9.36 9.50 9.34 9.44
7050 NASDAQ NATR Wed, Apr 10, 2019 9.95 10.00 9.62 9.73
7049 NASDAQ NATR Tue, Apr 9, 2019 9.59 10.02 9.58 9.87
7048 NASDAQ NATR Mon, Apr 8, 2019 9.65 10.00 9.27 9.90
7047 NASDAQ NATR Fri, Apr 5, 2019 9.55 9.74 9.10 9.66
7046 NASDAQ NATR Thu, Apr 4, 2019 9.24 9.90 9.24 9.57
7045 NASDAQ NATR Wed, Apr 3, 2019 9.84 9.84 9.21 9.72
7044 NASDAQ NATR Tue, Apr 2, 2019 9.43 9.86 9.41 9.85
7043 NASDAQ NATR Mon, Apr 1, 2019 9.37 9.50 9.06 9.50
7042 NASDAQ NATR Fri, Mar 29, 2019 9.25 9.40 8.82 9.29
7041 NASDAQ NATR Thu, Mar 28, 2019 9.02 9.42 8.96 9.28
7040 NASDAQ NATR Wed, Mar 27, 2019 9.45 9.45 9.01 9.30
7039 NASDAQ NATR Tue, Mar 26, 2019 9.37 9.50 9.26 9.50
7038 NASDAQ NATR Mon, Mar 25, 2019 9.01 9.19 8.58 9.09
7037 NASDAQ NATR Fri, Mar 22, 2019 9.12 9.68 8.87 9.11
7036 NASDAQ NATR Thu, Mar 21, 2019 9.99 9.99 9.10 9.12
7035 NASDAQ NATR Wed, Mar 20, 2019 9.99 9.99 9.28 9.65
7034 NASDAQ NATR Tue, Mar 19, 2019 10.18 10.25 9.73 10.10
7033 NASDAQ NATR Mon, Mar 18, 2019 10.26 10.48 9.75 10.09
7032 NASDAQ NATR Fri, Mar 15, 2019 10.35 10.73 9.28 10.15
7031 NASDAQ NATR Thu, Mar 14, 2019 9.99 10.50 9.92 10.35
7030 NASDAQ NATR Wed, Mar 13, 2019 10.15 10.15 9.72 9.92
7029 NASDAQ NATR Tue, Mar 12, 2019 9.50 10.45 9.35 10.19
7028 NASDAQ NATR Mon, Mar 11, 2019 8.50 9.28 8.50 9.28
7027 NASDAQ NATR Fri, Mar 8, 2019 7.50 8.74 7.50 8.43
7026 NASDAQ NATR Thu, Mar 7, 2019 7.70 8.03 6.89 6.89
7025 NASDAQ NATR Wed, Mar 6, 2019 8.25 8.31 7.19 7.43
7024 NASDAQ NATR Tue, Mar 5, 2019 8.30 8.40 8.29 8.29
7023 NASDAQ NATR Mon, Mar 4, 2019 8.39 8.39 8.30 8.30
7022 NASDAQ NATR Fri, Mar 1, 2019 8.43 8.48 8.37 8.37
7021 NASDAQ NATR Thu, Feb 28, 2019 8.42 8.42 8.30 8.30
7020 NASDAQ NATR Wed, Feb 27, 2019 8.30 8.50 8.30 8.34
7019 NASDAQ NATR Tue, Feb 26, 2019 8.45 8.52 8.30 8.31
7018 NASDAQ NATR Mon, Feb 25, 2019 8.39 8.43 8.38 8.38
7017 NASDAQ NATR Fri, Feb 22, 2019 8.36 8.59 8.36 8.41
7016 NASDAQ NATR Thu, Feb 21, 2019 8.39 8.63 8.31 8.43
7015 NASDAQ NATR Wed, Feb 20, 2019 8.61 8.70 8.30 8.30
7014 NASDAQ NATR Tue, Feb 19, 2019 8.52 8.62 8.46 8.61
7013 NASDAQ NATR Fri, Feb 15, 2019 8.42 8.85 8.42 8.54
7012 NASDAQ NATR Thu, Feb 14, 2019 8.49 8.60 8.33 8.34
7011 NASDAQ NATR Wed, Feb 13, 2019 8.23 8.60 8.23 8.50
7010 NASDAQ NATR Tue, Feb 12, 2019 8.15 8.25 8.15 8.22
7009 NASDAQ NATR Mon, Feb 11, 2019 8.01 8.11 7.99 8.08
7008 NASDAQ NATR Fri, Feb 8, 2019 7.77 8.11 7.77 8.00
7007 NASDAQ NATR Thu, Feb 7, 2019 8.02 8.09 7.96 7.96
7006 NASDAQ NATR Wed, Feb 6, 2019 7.95 8.07 7.94 8.00
7005 NASDAQ NATR Tue, Feb 5, 2019 7.95 8.09 7.94 7.94
7004 NASDAQ NATR Mon, Feb 4, 2019 8.10 8.10 7.91 7.91
7003 NASDAQ NATR Fri, Feb 1, 2019 8.10 8.10 7.90 7.90
7002 NASDAQ NATR Thu, Jan 31, 2019 8.08 8.15 8.00 8.00
7001 NASDAQ NATR Wed, Jan 30, 2019 8.01 8.15 8.01 8.15
7000 NASDAQ NATR Tue, Jan 29, 2019 8.01 8.04 8.00 8.04
6999 NASDAQ NATR Mon, Jan 28, 2019 7.99 8.15 7.99 8.01
6998 NASDAQ NATR Fri, Jan 25, 2019 8.10 8.16 8.00 8.15
6997 NASDAQ NATR Thu, Jan 24, 2019 7.93 8.11 7.93 8.07
6996 NASDAQ NATR Wed, Jan 23, 2019 7.99 8.03 7.93 7.93
6995 NASDAQ NATR Tue, Jan 22, 2019 7.99 8.16 7.88 7.88
6994 NASDAQ NATR Fri, Jan 18, 2019 7.99 8.20 7.99 8.03
6993 NASDAQ NATR Thu, Jan 17, 2019 7.95 8.16 7.95 8.01
6992 NASDAQ NATR Wed, Jan 16, 2019 7.80 7.98 7.80 7.94
6991 NASDAQ NATR Tue, Jan 15, 2019 8.02 8.05 7.85 7.92
6990 NASDAQ NATR Mon, Jan 14, 2019 8.10 8.23 8.00 8.00
6989 NASDAQ NATR Fri, Jan 11, 2019 8.04 8.05 7.94 8.04
6988 NASDAQ NATR Thu, Jan 10, 2019 8.25 8.25 8.00 8.00
6987 NASDAQ NATR Wed, Jan 9, 2019 8.20 8.35 8.00 8.11
6986 NASDAQ NATR Tue, Jan 8, 2019 8.26 8.50 8.05 8.15
6985 NASDAQ NATR Mon, Jan 7, 2019 8.04 8.25 8.00 8.05
6984 NASDAQ NATR Fri, Jan 4, 2019 8.05 8.29 7.99 8.19
6983 NASDAQ NATR Thu, Jan 3, 2019 8.11 8.40 7.79 7.89
6982 NASDAQ NATR Wed, Jan 2, 2019 7.65 8.29 7.56 8.29
6981 NASDAQ NATR Mon, Dec 31, 2018 7.73 8.24 7.73 8.15
6980 NASDAQ NATR Fri, Dec 28, 2018 7.78 8.06 7.50 7.75
6979 NASDAQ NATR Thu, Dec 27, 2018 7.55 7.90 7.54 7.86
6978 NASDAQ NATR Wed, Dec 26, 2018 7.53 7.81 7.53 7.73
6977 NASDAQ NATR Mon, Dec 24, 2018 7.09 7.66 6.40 7.24
6976 NASDAQ NATR Fri, Dec 21, 2018 6.52 7.18 6.12 7.18
6975 NASDAQ NATR Thu, Dec 20, 2018 7.92 7.95 6.91 7.02
6974 NASDAQ NATR Wed, Dec 19, 2018 8.20 8.27 7.74 7.78
6973 NASDAQ NATR Tue, Dec 18, 2018 8.18 8.43 8.18 8.20
6972 NASDAQ NATR Mon, Dec 17, 2018 8.62 8.62 7.86 8.00
6971 NASDAQ NATR Fri, Dec 14, 2018 8.78 9.08 8.46 8.46
6970 NASDAQ NATR Thu, Dec 13, 2018 8.80 8.86 8.80 8.81
6969 NASDAQ NATR Wed, Dec 12, 2018 8.95 9.15 8.85 8.85
6968 NASDAQ NATR Tue, Dec 11, 2018 9.12 9.12 8.79 8.95
6967 NASDAQ NATR Mon, Dec 10, 2018 8.93 8.99 8.81 8.91
6966 NASDAQ NATR Fri, Dec 7, 2018 9.08 9.08 8.80 8.87
6965 NASDAQ NATR Thu, Dec 6, 2018 8.92 9.20 8.68 8.83
6964 NASDAQ NATR Tue, Dec 4, 2018 9.53 9.53 9.01 9.01
6963 NASDAQ NATR Mon, Dec 3, 2018 9.45 9.49 9.14 9.43
6962 NASDAQ NATR Fri, Nov 30, 2018 9.18 9.50 9.18 9.20
6961 NASDAQ NATR Thu, Nov 29, 2018 9.26 9.38 9.12 9.12
6960 NASDAQ NATR Wed, Nov 28, 2018 9.04 9.20 8.95 9.03
6959 NASDAQ NATR Tue, Nov 27, 2018 9.04 9.04 8.90 8.96
6958 NASDAQ NATR Mon, Nov 26, 2018 9.07 9.33 8.97 8.97
6957 NASDAQ NATR Fri, Nov 23, 2018 9.11 9.46 8.80 9.05
6956 NASDAQ NATR Wed, Nov 21, 2018 9.05 9.28 8.92 9.05
6955 NASDAQ NATR Tue, Nov 20, 2018 9.30 9.30 8.92 9.09
6954 NASDAQ NATR Mon, Nov 19, 2018 9.18 9.18 8.79 8.91
6953 NASDAQ NATR Fri, Nov 16, 2018 9.19 9.42 9.19 9.20
6952 NASDAQ NATR Thu, Nov 15, 2018 9.20 9.27 9.06 9.19
6951 NASDAQ NATR Wed, Nov 14, 2018 9.02 9.19 8.90 9.04
6950 NASDAQ NATR Tue, Nov 13, 2018 8.78 9.15 8.78 8.95
6949 NASDAQ NATR Mon, Nov 12, 2018 9.01 9.08 8.74 8.80
6948 NASDAQ NATR Fri, Nov 9, 2018 9.38 9.50 9.19 9.19
6947 NASDAQ NATR Thu, Nov 8, 2018 8.86 9.59 8.86 9.49
6946 NASDAQ NATR Wed, Nov 7, 2018 9.20 9.29 9.04 9.29
6945 NASDAQ NATR Tue, Nov 6, 2018 9.03 9.25 9.00 9.23
6944 NASDAQ NATR Mon, Nov 5, 2018 9.25 9.40 9.01 9.11
6943 NASDAQ NATR Fri, Nov 2, 2018 9.17 9.50 9.05 9.22
6942 NASDAQ NATR Thu, Nov 1, 2018 8.96 9.21 8.64 9.18
6941 NASDAQ NATR Wed, Oct 31, 2018 9.15 9.19 8.64 8.85
6940 NASDAQ NATR Tue, Oct 30, 2018 9.00 9.22 8.95 9.05
6939 NASDAQ NATR Mon, Oct 29, 2018 9.00 9.25 8.66 8.95
6938 NASDAQ NATR Fri, Oct 26, 2018 9.48 9.50 9.04 9.21
6937 NASDAQ NATR Thu, Oct 25, 2018 9.75 9.75 8.78 9.45
6936 NASDAQ NATR Wed, Oct 24, 2018 9.05 9.29 9.05 9.07
6935 NASDAQ NATR Tue, Oct 23, 2018 8.89 9.31 8.89 9.03
6934 NASDAQ NATR Mon, Oct 22, 2018 8.59 9.02 8.15 8.84
6933 NASDAQ NATR Fri, Oct 19, 2018 8.11 8.75 8.11 8.30
6932 NASDAQ NATR Thu, Oct 18, 2018 7.91 8.16 7.90 8.13
6931 NASDAQ NATR Wed, Oct 17, 2018 8.18 8.19 7.77 7.80
6930 NASDAQ NATR Tue, Oct 16, 2018 7.99 8.21 7.76 8.20
6929 NASDAQ NATR Mon, Oct 15, 2018 7.98 8.19 7.85 7.87
6928 NASDAQ NATR Fri, Oct 12, 2018 8.03 8.23 7.85 8.03
6927 NASDAQ NATR Thu, Oct 11, 2018 7.85 8.23 7.85 7.97
6926 NASDAQ NATR Wed, Oct 10, 2018 8.18 8.26 7.85 7.90
6925 NASDAQ NATR Tue, Oct 9, 2018 8.50 8.50 8.22 8.23
6924 NASDAQ NATR Mon, Oct 8, 2018 8.50 8.68 8.50 8.52
6923 NASDAQ NATR Fri, Oct 5, 2018 8.85 8.85 8.45 8.50
6922 NASDAQ NATR Thu, Oct 4, 2018 8.70 8.88 8.45 8.73
6921 NASDAQ NATR Wed, Oct 3, 2018 8.83 8.83 8.50 8.63
6920 NASDAQ NATR Tue, Oct 2, 2018 8.68 8.79 8.50 8.57
6919 NASDAQ NATR Mon, Oct 1, 2018 8.88 8.88 8.67 8.74
6918 NASDAQ NATR Fri, Sep 28, 2018 8.65 8.80 8.60 8.75
6917 NASDAQ NATR Thu, Sep 27, 2018 9.00 9.05 8.70 8.70
6916 NASDAQ NATR Wed, Sep 26, 2018 8.90 9.10 8.90 8.95
6915 NASDAQ NATR Tue, Sep 25, 2018 9.00 9.00 8.85 8.95
6914 NASDAQ NATR Mon, Sep 24, 2018 8.85 9.00 8.80 8.90
6913 NASDAQ NATR Fri, Sep 21, 2018 9.25 9.25 8.80 8.85
6912 NASDAQ NATR Thu, Sep 20, 2018 9.15 9.40 9.07 9.35
6911 NASDAQ NATR Wed, Sep 19, 2018 9.05 9.15 9.05 9.10
6910 NASDAQ NATR Tue, Sep 18, 2018 9.15 9.15 8.90 9.00
6909 NASDAQ NATR Mon, Sep 17, 2018 9.05 9.30 9.00 9.15
6908 NASDAQ NATR Fri, Sep 14, 2018 8.60 9.10 8.60 9.05
6907 NASDAQ NATR Thu, Sep 13, 2018 8.45 8.75 8.45 8.65
6906 NASDAQ NATR Wed, Sep 12, 2018 8.45 8.65 8.45 8.45
6905 NASDAQ NATR Tue, Sep 11, 2018 8.75 8.80 8.45 8.60
6904 NASDAQ NATR Mon, Sep 10, 2018 8.65 8.80 8.30 8.75
6903 NASDAQ NATR Fri, Sep 7, 2018 8.85 8.85 8.35 8.60
6902 NASDAQ NATR Thu, Sep 6, 2018 8.85 9.10 8.80 8.80
6901 NASDAQ NATR Wed, Sep 5, 2018 8.95 9.10 8.60 9.05
6900 NASDAQ NATR Tue, Sep 4, 2018 8.75 9.10 8.60 9.00
6899 NASDAQ NATR Fri, Aug 31, 2018 8.60 9.10 8.60 9.00
6898 NASDAQ NATR Thu, Aug 30, 2018 8.80 8.85 8.70 8.70
6897 NASDAQ NATR Wed, Aug 29, 2018 8.80 8.95 8.80 8.90
6896 NASDAQ NATR Tue, Aug 28, 2018 8.85 8.97 8.80 8.80
6895 NASDAQ NATR Mon, Aug 27, 2018 8.65 9.10 8.65 8.95
6894 NASDAQ NATR Fri, Aug 24, 2018 8.40 8.85 8.40 8.75
6893 NASDAQ NATR Thu, Aug 23, 2018 8.35 8.70 8.30 8.40
6892 NASDAQ NATR Wed, Aug 22, 2018 8.50 8.75 8.50 8.50
6891 NASDAQ NATR Tue, Aug 21, 2018 8.80 8.80 8.15 8.45
6890 NASDAQ NATR Mon, Aug 20, 2018 8.95 9.00 8.85 8.90
6889 NASDAQ NATR Fri, Aug 17, 2018 8.80 9.00 8.80 8.90
6888 NASDAQ NATR Thu, Aug 16, 2018 8.95 9.45 7.85 8.85
6887 NASDAQ NATR Wed, Aug 15, 2018 9.50 9.50 8.90 8.90
6886 NASDAQ NATR Tue, Aug 14, 2018 9.25 9.48 9.20 9.20
6885 NASDAQ NATR Mon, Aug 13, 2018 9.05 9.50 8.95 9.45
6884 NASDAQ NATR Fri, Aug 10, 2018 8.95 9.10 8.75 9.00
6883 NASDAQ NATR Thu, Aug 9, 2018 8.45 9.25 8.45 9.05
6882 NASDAQ NATR Wed, Aug 8, 2018 7.85 9.25 7.85 9.10
6881 NASDAQ NATR Tue, Aug 7, 2018 7.95 8.01 7.85 8.00
6880 NASDAQ NATR Mon, Aug 6, 2018 8.30 8.70 8.15 8.20
6879 NASDAQ NATR Fri, Aug 3, 2018 7.95 8.55 7.95 8.50
6878 NASDAQ NATR Thu, Aug 2, 2018 7.60 8.25 7.60 7.80
6877 NASDAQ NATR Wed, Aug 1, 2018 7.80 8.05 7.55 7.60
6876 NASDAQ NATR Tue, Jul 31, 2018 8.15 8.15 7.90 7.90
6875 NASDAQ NATR Mon, Jul 30, 2018 8.30 8.50 8.15 8.15
6874 NASDAQ NATR Fri, Jul 27, 2018 8.65 8.69 8.20 8.20
6873 NASDAQ NATR Thu, Jul 26, 2018 8.50 8.65 8.45 8.55
6872 NASDAQ NATR Wed, Jul 25, 2018 8.65 8.75 8.45 8.45
6871 NASDAQ NATR Tue, Jul 24, 2018 8.85 8.85 8.55 8.60
6870 NASDAQ NATR Mon, Jul 23, 2018 9.00 9.20 8.80 8.90
6869 NASDAQ NATR Fri, Jul 20, 2018 9.00 9.05 9.00 9.00
6868 NASDAQ NATR Thu, Jul 19, 2018 9.15 9.20 9.05 9.05
6867 NASDAQ NATR Wed, Jul 18, 2018 9.10 9.20 9.05 9.10
6866 NASDAQ NATR Tue, Jul 17, 2018 8.95 9.30 8.95 9.05
6865 NASDAQ NATR Mon, Jul 16, 2018 9.35 9.35 8.90 9.00
6864 NASDAQ NATR Fri, Jul 13, 2018 9.20 9.35 9.20 9.35
6863 NASDAQ NATR Thu, Jul 12, 2018 9.10 9.18 9.00 9.15
6862 NASDAQ NATR Wed, Jul 11, 2018 9.33 9.40 9.10 9.20
6861 NASDAQ NATR Tue, Jul 10, 2018 9.50 9.60 9.25 9.35
6860 NASDAQ NATR Mon, Jul 9, 2018 9.45 9.50 9.40 9.50
6859 NASDAQ NATR Fri, Jul 6, 2018 9.30 9.45 9.30 9.35
6858 NASDAQ NATR Thu, Jul 5, 2018 9.20 9.60 9.20 9.25
6857 NASDAQ NATR Tue, Jul 3, 2018 9.50 9.50 9.35 9.40
6856 NASDAQ NATR Mon, Jul 2, 2018 9.26 9.50 9.26 9.45
6855 NASDAQ NATR Fri, Jun 29, 2018 9.45 9.50 9.35 9.35
6854 NASDAQ NATR Thu, Jun 28, 2018 9.50 9.90 9.43 9.55
6853 NASDAQ NATR Wed, Jun 27, 2018 9.30 9.50 9.26 9.45
6852 NASDAQ NATR Tue, Jun 26, 2018 9.15 9.50 9.15 9.50
6851 NASDAQ NATR Mon, Jun 25, 2018 9.45 9.45 9.00 9.25
6850 NASDAQ NATR Fri, Jun 22, 2018 8.75 9.50 8.75 9.25
6849 NASDAQ NATR Thu, Jun 21, 2018 8.80 8.85 8.60 8.80
6848 NASDAQ NATR Wed, Jun 20, 2018 8.55 9.00 8.55 8.75
6847 NASDAQ NATR Tue, Jun 19, 2018 9.00 9.00 8.52 8.60
6846 NASDAQ NATR Mon, Jun 18, 2018 8.85 9.30 8.85 8.90
6845 NASDAQ NATR Fri, Jun 15, 2018 8.75 9.25 8.75 9.10
6844 NASDAQ NATR Thu, Jun 14, 2018 8.85 8.95 8.70 8.75
6843 NASDAQ NATR Wed, Jun 13, 2018 8.80 9.20 8.75 8.85
6842 NASDAQ NATR Tue, Jun 12, 2018 8.70 8.85 8.60 8.65
6841 NASDAQ NATR Mon, Jun 11, 2018 8.80 8.90 8.60 8.65
6840 NASDAQ NATR Fri, Jun 8, 2018 8.95 8.96 8.75 8.80
6839 NASDAQ NATR Thu, Jun 7, 2018 8.70 8.95 8.70 8.90
6838 NASDAQ NATR Wed, Jun 6, 2018 9.00 9.00 8.60 8.70
6837 NASDAQ NATR Tue, Jun 5, 2018 9.05 9.15 8.85 9.00
6836 NASDAQ NATR Mon, Jun 4, 2018 8.96 9.05 8.95 9.00
6835 NASDAQ NATR Fri, Jun 1, 2018 9.10 9.15 8.95 9.05
6834 NASDAQ NATR Thu, May 31, 2018 9.05 9.20 9.05 9.05
6833 NASDAQ NATR Wed, May 30, 2018 9.20 9.20 9.05 9.10
6832 NASDAQ NATR Tue, May 29, 2018 9.20 9.45 9.10 9.20
6831 NASDAQ NATR Fri, May 25, 2018 9.30 9.30 8.95 9.05
6830 NASDAQ NATR Thu, May 24, 2018 9.30 9.30 8.95 9.10
6829 NASDAQ NATR Wed, May 23, 2018 9.40 9.60 9.15 9.30
6828 NASDAQ NATR Tue, May 22, 2018 9.75 9.75 9.25 9.40
6827 NASDAQ NATR Mon, May 21, 2018 9.70 9.73 9.10 9.15
6826 NASDAQ NATR Fri, May 18, 2018 9.65 9.70 9.35 9.45
6825 NASDAQ NATR Thu, May 17, 2018 9.45 9.50 9.38 9.40
6824 NASDAQ NATR Wed, May 16, 2018 8.95 9.73 8.95 9.30
6823 NASDAQ NATR Tue, May 15, 2018 8.30 9.10 8.30 9.00
6822 NASDAQ NATR Mon, May 14, 2018 9.05 9.25 8.75 8.80
6821 NASDAQ NATR Fri, May 11, 2018 9.80 10.45 9.05 9.10
6820 NASDAQ NATR Thu, May 10, 2018 9.23 9.30 9.10 9.23
6819 NASDAQ NATR Wed, May 9, 2018 9.85 9.95 9.75 9.85
6818 NASDAQ NATR Tue, May 8, 2018 9.70 9.85 9.70 9.80
6817 NASDAQ NATR Mon, May 7, 2018 9.60 9.70 9.60 9.70
6816 NASDAQ NATR Fri, May 4, 2018 9.30 9.50 9.20 9.50
6815 NASDAQ NATR Thu, May 3, 2018 9.40 9.50 9.05 9.25
6814 NASDAQ NATR Wed, May 2, 2018 9.30 9.65 9.25 9.40
6813 NASDAQ NATR Tue, May 1, 2018 9.20 9.35 9.10 9.30
6812 NASDAQ NATR Mon, Apr 30, 2018 9.45 9.65 9.25 9.25
6811 NASDAQ NATR Fri, Apr 27, 2018 9.50 9.50 9.05 9.30
6810 NASDAQ NATR Thu, Apr 26, 2018 9.35 9.50 9.25 9.45
6809 NASDAQ NATR Wed, Apr 25, 2018 9.25 9.60 9.25 9.40
6808 NASDAQ NATR Tue, Apr 24, 2018 9.55 9.55 9.28 9.45
6807 NASDAQ NATR Mon, Apr 23, 2018 9.45 9.50 9.25 9.35
6806 NASDAQ NATR Fri, Apr 20, 2018 9.30 9.75 9.25 9.65
6805 NASDAQ NATR Thu, Apr 19, 2018 9.40 9.50 9.40 9.50
6804 NASDAQ NATR Wed, Apr 18, 2018 9.63 9.63 9.26 9.40
6803 NASDAQ NATR Tue, Apr 17, 2018 9.30 9.55 9.30 9.55
6802 NASDAQ NATR Mon, Apr 16, 2018 11.00 11.00 9.15 9.20
6801 NASDAQ NATR Fri, Apr 13, 2018 10.25 10.35 10.10 10.20
6800 NASDAQ NATR Thu, Apr 12, 2018 10.25 10.25 10.10 10.10
6799 NASDAQ NATR Wed, Apr 11, 2018 10.00 10.35 10.00 10.10
6798 NASDAQ NATR Tue, Apr 10, 2018 10.35 10.40 10.15 10.25
6797 NASDAQ NATR Mon, Apr 9, 2018 10.20 10.45 10.10 10.20
6796 NASDAQ NATR Fri, Apr 6, 2018 10.20 10.73 10.20 10.30
6795 NASDAQ NATR Thu, Apr 5, 2018 10.26 10.26 10.10 10.20
6794 NASDAQ NATR Wed, Apr 4, 2018 10.20 10.50 9.55 10.00
6793 NASDAQ NATR Tue, Apr 3, 2018 10.35 10.80 10.25 10.45
6792 NASDAQ NATR Mon, Apr 2, 2018 10.95 10.95 10.10 10.25
6791 NASDAQ NATR Thu, Mar 29, 2018 10.85 11.05 10.85 11.00
6790 NASDAQ NATR Wed, Mar 28, 2018 10.80 11.10 10.58 10.70
6789 NASDAQ NATR Tue, Mar 27, 2018 10.83 11.10 10.60 10.75
6788 NASDAQ NATR Mon, Mar 26, 2018 10.50 11.20 10.50 11.05
6787 NASDAQ NATR Fri, Mar 23, 2018 10.95 11.30 10.80 10.80
6786 NASDAQ NATR Thu, Mar 22, 2018 11.18 11.25 11.10 11.10
6785 NASDAQ NATR Wed, Mar 21, 2018 11.15 11.35 11.13 11.30
6784 NASDAQ NATR Tue, Mar 20, 2018 11.30 11.35 11.25 11.25
6783 NASDAQ NATR Mon, Mar 19, 2018 11.30 11.30 11.20 11.25
6782 NASDAQ NATR Fri, Mar 16, 2018 11.25 11.45 11.15 11.45
6781 NASDAQ NATR Thu, Mar 15, 2018 12.10 12.10 11.20 11.35
6780 NASDAQ NATR Wed, Mar 14, 2018 11.40 12.00 11.15 11.75
6779 NASDAQ NATR Tue, Mar 13, 2018 12.15 12.15 11.40 11.70
6778 NASDAQ NATR Mon, Mar 12, 2018 11.60 12.10 11.60 12.00
6777 NASDAQ NATR Fri, Mar 9, 2018 11.45 12.10 11.05 11.65
6776 NASDAQ NATR Thu, Mar 8, 2018 11.05 11.40 11.05 11.30
6775 NASDAQ NATR Wed, Mar 7, 2018 11.20 11.30 11.10 11.25
6774 NASDAQ NATR Tue, Mar 6, 2018 11.20 11.20 10.90 11.20
6773 NASDAQ NATR Mon, Mar 5, 2018 11.00 11.15 11.00 11.05
6772 NASDAQ NATR Fri, Mar 2, 2018 10.75 11.00 10.20 10.95
6771 NASDAQ NATR Thu, Mar 1, 2018 11.35 11.35 11.00 11.10
6770 NASDAQ NATR Wed, Feb 28, 2018 11.56 11.77 11.25 11.25
6769 NASDAQ NATR Tue, Feb 27, 2018 12.05 12.05 11.80 11.85
6768 NASDAQ NATR Mon, Feb 26, 2018 11.65 12.00 11.59 12.00
6767 NASDAQ NATR Fri, Feb 23, 2018 11.55 11.70 11.55 11.70
6766 NASDAQ NATR Thu, Feb 22, 2018 11.65 11.66 11.50 11.60
6765 NASDAQ NATR Wed, Feb 21, 2018 11.60 11.90 11.50 11.55
6764 NASDAQ NATR Tue, Feb 20, 2018 11.65 11.85 11.50 11.50
6763 NASDAQ NATR Fri, Feb 16, 2018 11.40 11.95 11.40 11.95
6762 NASDAQ NATR Thu, Feb 15, 2018 11.40 11.55 11.31 11.45
6761 NASDAQ NATR Wed, Feb 14, 2018 11.10 11.40 11.10 11.25
6760 NASDAQ NATR Tue, Feb 13, 2018 11.15 11.20 11.10 11.20
6759 NASDAQ NATR Mon, Feb 12, 2018 11.30 11.40 11.05 11.20
6758 NASDAQ NATR Fri, Feb 9, 2018 11.30 11.45 11.30 11.30
6757 NASDAQ NATR Thu, Feb 8, 2018 11.41 11.60 11.30 11.30
6756 NASDAQ NATR Wed, Feb 7, 2018 11.30 11.60 11.30 11.35
6755 NASDAQ NATR Tue, Feb 6, 2018 11.00 11.55 11.00 11.55
6754 NASDAQ NATR Mon, Feb 5, 2018 11.10 11.45 11.05 11.05
6753 NASDAQ NATR Fri, Feb 2, 2018 11.95 12.00 11.15 11.25
6752 NASDAQ NATR Thu, Feb 1, 2018 12.05 12.15 12.00 12.10
6751 NASDAQ NATR Wed, Jan 31, 2018 11.65 12.15 11.60 12.10
6750 NASDAQ NATR Tue, Jan 30, 2018 11.65 11.80 11.51 11.75
6749 NASDAQ NATR Mon, Jan 29, 2018 11.55 11.80 11.55 11.65
6748 NASDAQ NATR Fri, Jan 26, 2018 11.90 11.90 11.65 11.68
6747 NASDAQ NATR Thu, Jan 25, 2018 12.05 12.05 11.90 11.95
6746 NASDAQ NATR Wed, Jan 24, 2018 12.15 12.15 12.05 12.05
6745 NASDAQ NATR Tue, Jan 23, 2018 12.05 12.15 12.05 12.15
6744 NASDAQ NATR Mon, Jan 22, 2018 12.00 12.10 11.95 12.10
6743 NASDAQ NATR Fri, Jan 19, 2018 11.65 12.10 11.65 12.00
6742 NASDAQ NATR Thu, Jan 18, 2018 11.75 11.85 11.68 11.70
6741 NASDAQ NATR Wed, Jan 17, 2018 12.00 12.00 11.80 11.85
6740 NASDAQ NATR Tue, Jan 16, 2018 11.90 12.15 11.90 12.05
6739 NASDAQ NATR Fri, Jan 12, 2018 11.60 11.95 11.60 11.95
6738 NASDAQ NATR Thu, Jan 11, 2018 11.65 11.80 11.60 11.70
6737 NASDAQ NATR Wed, Jan 10, 2018 11.60 11.75 11.60 11.75
6736 NASDAQ NATR Tue, Jan 9, 2018 11.60 11.60 11.60 11.60
6735 NASDAQ NATR Mon, Jan 8, 2018 11.25 11.70 11.25 11.65
6734 NASDAQ NATR Fri, Jan 5, 2018 11.55 11.62 11.30 11.35
6733 NASDAQ NATR Thu, Jan 4, 2018 11.75 11.75 11.55 11.55
6732 NASDAQ NATR Wed, Jan 3, 2018 11.55 11.65 11.15 11.65
6731 NASDAQ NATR Tue, Jan 2, 2018 11.60 11.70 11.58 11.60
6730 NASDAQ NATR Fri, Dec 29, 2017 11.60 11.75 11.55 11.55
6729 NASDAQ NATR Thu, Dec 28, 2017 12.10 12.10 11.55 11.60
6728 NASDAQ NATR Wed, Dec 27, 2017 12.00 12.15 12.00 12.00
6727 NASDAQ NATR Tue, Dec 26, 2017 11.95 12.10 11.95 12.00
6726 NASDAQ NATR Fri, Dec 22, 2017 12.05 12.15 11.95 12.00
6725 NASDAQ NATR Thu, Dec 21, 2017 12.00 12.15 12.00 12.05
6724 NASDAQ NATR Wed, Dec 20, 2017 12.00 12.15 12.00 12.10
6723 NASDAQ NATR Tue, Dec 19, 2017 12.50 12.50 12.15 12.15
6722 NASDAQ NATR Mon, Dec 18, 2017 12.10 12.50 12.10 12.50
6721 NASDAQ NATR Fri, Dec 15, 2017 12.00 12.15 11.95 12.10
6720 NASDAQ NATR Thu, Dec 14, 2017 12.10 12.10 11.85 12.00
6719 NASDAQ NATR Wed, Dec 13, 2017 11.85 12.10 11.85 12.10
6718 NASDAQ NATR Tue, Dec 12, 2017 12.05 12.15 12.00 12.05
6717 NASDAQ NATR Mon, Dec 11, 2017 12.00 12.20 12.00 12.00
6716 NASDAQ NATR Fri, Dec 8, 2017 12.10 12.20 12.10 12.15
6715 NASDAQ NATR Thu, Dec 7, 2017 12.08 12.15 12.00 12.10
6714 NASDAQ NATR Wed, Dec 6, 2017 12.15 12.25 12.05 12.10
6713 NASDAQ NATR Tue, Dec 5, 2017 12.45 12.45 12.05 12.10
6712 NASDAQ NATR Mon, Dec 4, 2017 12.50 12.68 12.40 12.40
6711 NASDAQ NATR Fri, Dec 1, 2017 12.55 12.60 12.15 12.40
6710 NASDAQ NATR Thu, Nov 30, 2017 12.95 13.00 12.80 12.85
6709 NASDAQ NATR Wed, Nov 29, 2017 12.70 13.00 12.65 13.00
6708 NASDAQ NATR Tue, Nov 28, 2017 12.60 12.65 12.43 12.60
6707 NASDAQ NATR Mon, Nov 27, 2017 12.65 12.65 12.25 12.50
6706 NASDAQ NATR Fri, Nov 24, 2017 12.50 12.95 12.50 12.70
6705 NASDAQ NATR Wed, Nov 22, 2017 11.85 13.80 11.85 12.75
6704 NASDAQ NATR Tue, Nov 21, 2017 12.15 12.15 11.85 11.90
6703 NASDAQ NATR Mon, Nov 20, 2017 11.85 11.95 11.70 11.95
6702 NASDAQ NATR Fri, Nov 17, 2017 11.85 12.00 11.40 11.85
6701 NASDAQ NATR Thu, Nov 16, 2017 12.35 13.10 11.85 12.00
6700 NASDAQ NATR Wed, Nov 15, 2017 12.60 12.60 12.20 12.30
6699 NASDAQ NATR Tue, Nov 14, 2017 12.90 12.90 12.15 12.65
6698 NASDAQ NATR Mon, Nov 13, 2017 11.35 13.15 11.20 12.90
6697 NASDAQ NATR Fri, Nov 10, 2017 11.80 11.80 11.30 11.35
6696 NASDAQ NATR Thu, Nov 9, 2017 9.30 12.45 9.30 11.95
6695 NASDAQ NATR Wed, Nov 8, 2017 9.00 9.25 8.70 9.20
6694 NASDAQ NATR Tue, Nov 7, 2017 9.70 9.70 8.95 9.05
6693 NASDAQ NATR Mon, Nov 6, 2017 9.90 9.96 9.65 9.75
6692 NASDAQ NATR Fri, Nov 3, 2017 10.00 10.10 9.90 10.00
6691 NASDAQ NATR Thu, Nov 2, 2017 9.89 10.15 9.70 10.10
6690 NASDAQ NATR Wed, Nov 1, 2017 10.05 10.05 9.85 9.95
6689 NASDAQ NATR Tue, Oct 31, 2017 10.15 10.15 9.85 9.90
6688 NASDAQ NATR Mon, Oct 30, 2017 10.15 10.15 10.00 10.05
6687 NASDAQ NATR Fri, Oct 27, 2017 10.20 10.30 10.15 10.30
6686 NASDAQ NATR Thu, Oct 26, 2017 10.20 10.25 10.18 10.25
6685 NASDAQ NATR Wed, Oct 25, 2017 9.90 10.20 9.90 10.20
6684 NASDAQ NATR Tue, Oct 24, 2017 10.03 10.16 10.00 10.05
6683 NASDAQ NATR Mon, Oct 23, 2017 9.85 10.03 9.85 10.00
6682 NASDAQ NATR Fri, Oct 20, 2017 10.20 10.20 9.90 10.00
6681 NASDAQ NATR Thu, Oct 19, 2017 10.20 10.20 9.93 10.10
6680 NASDAQ NATR Wed, Oct 18, 2017 10.35 10.40 10.20 10.25
6679 NASDAQ NATR Tue, Oct 17, 2017 10.50 10.50 10.30 10.40
6678 NASDAQ NATR Mon, Oct 16, 2017 10.75 10.75 10.35 10.45
6677 NASDAQ NATR Fri, Oct 13, 2017 10.90 10.90 10.70 10.80
6676 NASDAQ NATR Thu, Oct 12, 2017 11.15 11.15 10.70 10.75
6675 NASDAQ NATR Wed, Oct 11, 2017 11.50 11.50 10.70 11.20
6674 NASDAQ NATR Tue, Oct 10, 2017 11.35 11.55 10.80 11.55
6673 NASDAQ NATR Mon, Oct 9, 2017 11.16 11.30 11.15 11.20
6672 NASDAQ NATR Fri, Oct 6, 2017 10.80 11.05 10.55 11.00
6671 NASDAQ NATR Thu, Oct 5, 2017 10.65 10.90 10.65 10.90
6670 NASDAQ NATR Wed, Oct 4, 2017 10.65 10.75 10.50 10.50
6669 NASDAQ NATR Tue, Oct 3, 2017 10.90 10.90 10.45 10.60
6668 NASDAQ NATR Mon, Oct 2, 2017 10.55 11.62 10.10 10.85
6667 NASDAQ NATR Fri, Sep 29, 2017 11.25 11.33 10.10 10.15
6666 NASDAQ NATR Thu, Sep 28, 2017 10.40 11.90 10.40 11.90
6665 NASDAQ NATR Wed, Sep 27, 2017 10.95 11.70 10.95 11.60
6664 NASDAQ NATR Tue, Sep 26, 2017 10.85 11.00 10.75 10.95
6663 NASDAQ NATR Mon, Sep 25, 2017 10.70 11.00 10.70 10.80
6662 NASDAQ NATR Fri, Sep 22, 2017 10.70 10.75 10.55 10.75
6661 NASDAQ NATR Thu, Sep 21, 2017 10.65 10.75 10.60 10.70
6660 NASDAQ NATR Wed, Sep 20, 2017 10.60 10.80 10.60 10.65
6659 NASDAQ NATR Tue, Sep 19, 2017 10.45 10.80 10.45 10.65
6658 NASDAQ NATR Mon, Sep 18, 2017 10.40 10.80 10.40 10.55
6657 NASDAQ NATR Fri, Sep 15, 2017 9.95 10.70 9.70 10.50
6656 NASDAQ NATR Thu, Sep 14, 2017 9.65 10.00 9.45 9.90
6655 NASDAQ NATR Wed, Sep 13, 2017 10.10 10.26 9.45 9.60
6654 NASDAQ NATR Tue, Sep 12, 2017 10.43 10.45 10.00 10.10
6653 NASDAQ NATR Mon, Sep 11, 2017 10.05 10.35 10.00 10.30
6652 NASDAQ NATR Fri, Sep 8, 2017 10.05 10.10 10.00 10.05
6651 NASDAQ NATR Thu, Sep 7, 2017 10.15 10.15 10.00 10.05
6650 NASDAQ NATR Wed, Sep 6, 2017 10.10 10.20 10.00 10.15
6649 NASDAQ NATR Tue, Sep 5, 2017 10.55 10.70 10.00 10.05
6648 NASDAQ NATR Fri, Sep 1, 2017 10.45 10.65 10.45 10.60
6647 NASDAQ NATR Thu, Aug 31, 2017 10.60 10.60 10.45 10.55
6646 NASDAQ NATR Wed, Aug 30, 2017 10.30 10.75 10.30 10.45
6645 NASDAQ NATR Tue, Aug 29, 2017 10.15 10.40 10.05 10.40
6644 NASDAQ NATR Mon, Aug 28, 2017 10.20 10.21 9.95 10.10
6643 NASDAQ NATR Fri, Aug 25, 2017 10.15 10.20 10.00 10.10
6642 NASDAQ NATR Thu, Aug 24, 2017 10.05 10.15 9.95 10.15
6641 NASDAQ NATR Wed, Aug 23, 2017 10.00 10.55 9.90 10.00
6640 NASDAQ NATR Tue, Aug 22, 2017 9.35 10.20 9.35 9.95
6639 NASDAQ NATR Mon, Aug 21, 2017 9.85 10.25 9.85 10.05
6638 NASDAQ NATR Fri, Aug 18, 2017 9.60 10.10 9.60 9.95
6637 NASDAQ NATR Thu, Aug 17, 2017 9.75 10.15 9.70 9.80
6636 NASDAQ NATR Wed, Aug 16, 2017 9.84 10.00 9.80 9.80
6635 NASDAQ NATR Tue, Aug 15, 2017 10.35 10.35 9.71 9.80
6634 NASDAQ NATR Mon, Aug 14, 2017 10.35 10.65 10.05 10.25
6633 NASDAQ NATR Fri, Aug 11, 2017 10.55 10.55 10.20 10.45
6632 NASDAQ NATR Thu, Aug 10, 2017 10.50 11.55 10.35 10.38
6631 NASDAQ NATR Wed, Aug 9, 2017 12.00 12.00 9.90 10.50
6630 NASDAQ NATR Tue, Aug 8, 2017 12.25 12.65 12.20 12.25
6629 NASDAQ NATR Mon, Aug 7, 2017 12.15 12.50 12.10 12.40
6628 NASDAQ NATR Fri, Aug 4, 2017 12.40 12.50 11.95 12.35
6627 NASDAQ NATR Thu, Aug 3, 2017 12.50 12.60 12.35 12.40
6626 NASDAQ NATR Wed, Aug 2, 2017 12.65 12.70 12.55 12.55
6625 NASDAQ NATR Tue, Aug 1, 2017 12.65 12.65 12.50 12.63
6624 NASDAQ NATR Mon, Jul 31, 2017 12.65 12.70 12.62 12.65
6623 NASDAQ NATR Fri, Jul 28, 2017 12.80 12.80 12.60 12.60
6622 NASDAQ NATR Thu, Jul 27, 2017 12.80 12.85 12.70 12.80
6621 NASDAQ NATR Wed, Jul 26, 2017 12.85 12.95 12.85 12.90
6620 NASDAQ NATR Tue, Jul 25, 2017 12.90 13.10 12.85 12.90
6619 NASDAQ NATR Mon, Jul 24, 2017 12.80 12.90 12.75 12.85
6618 NASDAQ NATR Fri, Jul 21, 2017 13.10 13.10 12.75 12.95
6617 NASDAQ NATR Thu, Jul 20, 2017 13.10 13.25 12.85 13.05
6616 NASDAQ NATR Wed, Jul 19, 2017 12.75 13.25 12.75 13.15
6615 NASDAQ NATR Tue, Jul 18, 2017 12.70 12.85 12.70 12.75
6614 NASDAQ NATR Mon, Jul 17, 2017 12.60 12.85 12.60 12.75
6613 NASDAQ NATR Fri, Jul 14, 2017 12.60 12.90 12.60 12.65
6612 NASDAQ NATR Thu, Jul 13, 2017 12.55 13.15 12.55 12.65
6611 NASDAQ NATR Wed, Jul 12, 2017 12.80 12.85 12.36 12.60
6610 NASDAQ NATR Tue, Jul 11, 2017 12.65 12.65 12.30 12.40
6609 NASDAQ NATR Mon, Jul 10, 2017 12.85 12.90 12.35 12.50
6608 NASDAQ NATR Fri, Jul 7, 2017 13.20 13.30 12.50 12.90
6607 NASDAQ NATR Thu, Jul 6, 2017 13.20 13.30 13.20 13.20
6606 NASDAQ NATR Wed, Jul 5, 2017 13.20 13.35 12.90 13.20
6605 NASDAQ NATR Mon, Jul 3, 2017 13.20 13.30 13.20 13.30
6604 NASDAQ NATR Fri, Jun 30, 2017 13.25 13.25 13.10 13.25
6603 NASDAQ NATR Thu, Jun 29, 2017 13.25 13.30 13.20 13.20
6602 NASDAQ NATR Wed, Jun 28, 2017 13.45 13.65 13.20 13.30
6601 NASDAQ NATR Tue, Jun 27, 2017 13.50 13.55 13.25 13.30
6600 NASDAQ NATR Mon, Jun 26, 2017 13.50 13.75 13.25 13.50
6599 NASDAQ NATR Fri, Jun 23, 2017 13.35 13.65 13.20 13.50
6598 NASDAQ NATR Thu, Jun 22, 2017 13.55 13.55 13.10 13.35
6597 NASDAQ NATR Wed, Jun 21, 2017 13.05 13.60 13.00 13.50
6596 NASDAQ NATR Tue, Jun 20, 2017 13.20 13.35 12.85 13.00
6595 NASDAQ NATR Mon, Jun 19, 2017 13.35 13.55 13.15 13.20
6594 NASDAQ NATR Fri, Jun 16, 2017 13.60 13.70 13.13 13.25
6593 NASDAQ NATR Thu, Jun 15, 2017 13.75 14.16 13.55 13.75
6592 NASDAQ NATR Wed, Jun 14, 2017 13.20 14.15 13.00 13.90
6591 NASDAQ NATR Tue, Jun 13, 2017 13.40 13.50 13.20 13.20
6590 NASDAQ NATR Mon, Jun 12, 2017 14.00 14.45 13.35 13.45
6589 NASDAQ NATR Fri, Jun 9, 2017 13.70 14.75 13.50 13.95
6588 NASDAQ NATR Thu, Jun 8, 2017 13.15 13.65 13.00 13.50
6587 NASDAQ NATR Wed, Jun 7, 2017 13.20 13.45 13.00 13.10
6586 NASDAQ NATR Tue, Jun 6, 2017 12.65 13.35 12.65 13.30
6585 NASDAQ NATR Mon, Jun 5, 2017 13.25 13.75 12.75 12.75
6584 NASDAQ NATR Fri, Jun 2, 2017 12.85 13.30 12.70 13.25
6583 NASDAQ NATR Thu, Jun 1, 2017 12.70 12.95 12.65 12.75
6582 NASDAQ NATR Wed, May 31, 2017 13.25 13.25 12.60 12.65
6581 NASDAQ NATR Tue, May 30, 2017 12.35 13.45 12.25 13.35
6580 NASDAQ NATR Fri, May 26, 2017 12.00 12.65 12.00 12.35
6579 NASDAQ NATR Thu, May 25, 2017 12.25 12.45 12.00 12.10
6578 NASDAQ NATR Wed, May 24, 2017 11.65 12.70 11.60 12.25
6577 NASDAQ NATR Tue, May 23, 2017 11.40 11.95 11.25 11.80
6576 NASDAQ NATR Mon, May 22, 2017 11.50 11.80 11.30 11.45
6575 NASDAQ NATR Fri, May 19, 2017 11.10 11.50 11.00 11.30
6574 NASDAQ NATR Thu, May 18, 2017 11.58 11.61 11.00 11.15
6573 NASDAQ NATR Wed, May 17, 2017 11.65 11.84 11.25 11.35
6572 NASDAQ NATR Tue, May 16, 2017 9.30 12.75 9.25 11.30
6571 NASDAQ NATR Mon, May 15, 2017 8.70 8.85 8.65 8.85
6570 NASDAQ NATR Fri, May 12, 2017 8.70 8.70 8.55 8.60
6569 NASDAQ NATR Thu, May 11, 2017 8.90 9.00 8.65 8.75
6568 NASDAQ NATR Wed, May 10, 2017 8.70 9.20 8.70 9.05
6567 NASDAQ NATR Tue, May 9, 2017 8.55 8.85 8.48 8.80
6566 NASDAQ NATR Mon, May 8, 2017 8.75 9.00 8.40 8.50
6565 NASDAQ NATR Fri, May 5, 2017 8.80 9.00 8.70 8.70
6564 NASDAQ NATR Thu, May 4, 2017 9.15 9.16 8.60 8.80
6563 NASDAQ NATR Wed, May 3, 2017 9.65 9.75 9.13 9.25
6562 NASDAQ NATR Tue, May 2, 2017 10.25 10.25 9.65 9.65
6561 NASDAQ NATR Mon, May 1, 2017 10.07 10.07 9.76 9.85
6560 NASDAQ NATR Fri, Apr 28, 2017 10.25 10.25 9.80 10.10
6559 NASDAQ NATR Thu, Apr 27, 2017 10.15 10.35 10.05 10.30
6558 NASDAQ NATR Wed, Apr 26, 2017 10.05 10.20 10.05 10.15
6557 NASDAQ NATR Tue, Apr 25, 2017 10.25 10.25 9.85 9.90
6556 NASDAQ NATR Mon, Apr 24, 2017 10.25 10.35 10.15 10.20
6555 NASDAQ NATR Fri, Apr 21, 2017 10.00 10.00 9.65 10.00
6554 NASDAQ NATR Thu, Apr 20, 2017 9.90 10.00 9.90 10.00
6553 NASDAQ NATR Wed, Apr 19, 2017 9.80 9.95 9.75 9.75
6552 NASDAQ NATR Tue, Apr 18, 2017 9.90 9.95 9.80 9.80
6551 NASDAQ NATR Mon, Apr 17, 2017 9.60 9.95 9.50 9.95
6550 NASDAQ NATR Thu, Apr 13, 2017 9.85 9.85 9.50 9.50
6549 NASDAQ NATR Wed, Apr 12, 2017 10.00 10.00 9.55 9.70
6548 NASDAQ NATR Tue, Apr 11, 2017 9.90 10.05 9.85 9.95
6547 NASDAQ NATR Mon, Apr 10, 2017 10.00 10.00 9.85 9.95
6546 NASDAQ NATR Fri, Apr 7, 2017 9.95 10.20 9.90 10.00
6545 NASDAQ NATR Thu, Apr 6, 2017 9.90 10.05 9.80 9.95
6544 NASDAQ NATR Wed, Apr 5, 2017 10.20 10.30 9.75 9.75
6543 NASDAQ NATR Tue, Apr 4, 2017 9.80 10.15 9.70 10.10
6542 NASDAQ NATR Mon, Apr 3, 2017 10.00 10.05 9.80 9.80
6541 NASDAQ NATR Fri, Mar 31, 2017 9.55 10.05 9.50 10.00
6540 NASDAQ NATR Thu, Mar 30, 2017 9.95 9.95 9.55 9.60
6539 NASDAQ NATR Wed, Mar 29, 2017 9.95 10.10 9.75 9.90
6538 NASDAQ NATR Tue, Mar 28, 2017 9.30 9.90 9.15 9.80
6537 NASDAQ NATR Mon, Mar 27, 2017 9.10 9.30 8.95 9.20
6536 NASDAQ NATR Fri, Mar 24, 2017 9.50 9.50 8.80 9.15
6535 NASDAQ NATR Thu, Mar 23, 2017 9.40 9.50 9.36 9.50
6534 NASDAQ NATR Wed, Mar 22, 2017 9.50 9.75 9.15 9.30
6533 NASDAQ NATR Tue, Mar 21, 2017 9.95 9.95 9.25 9.55
6532 NASDAQ NATR Mon, Mar 20, 2017 10.00 10.05 9.90 9.90
6531 NASDAQ NATR Fri, Mar 17, 2017 10.10 10.20 10.00 10.10
6530 NASDAQ NATR Thu, Mar 16, 2017 10.03 10.20 9.90 10.20
6529 NASDAQ NATR Wed, Mar 15, 2017 9.95 10.13 9.95 9.95
6528 NASDAQ NATR Tue, Mar 14, 2017 9.75 9.95 9.70 9.85
6527 NASDAQ NATR Mon, Mar 13, 2017 9.90 9.96 9.65 9.90
6526 NASDAQ NATR Fri, Mar 10, 2017 9.80 10.25 9.70 9.90
6525 NASDAQ NATR Thu, Mar 9, 2017 9.75 10.05 9.65 9.70
6524 NASDAQ NATR Wed, Mar 8, 2017 10.90 10.90 9.15 9.65
6523 NASDAQ NATR Tue, Mar 7, 2017 11.25 11.45 11.05 11.10
6522 NASDAQ NATR Mon, Mar 6, 2017 11.35 11.35 11.10 11.25
6521 NASDAQ NATR Fri, Mar 3, 2017 12.05 12.05 11.20 11.45
6520 NASDAQ NATR Thu, Mar 2, 2017 12.15 12.15 11.54 11.60
6519 NASDAQ NATR Wed, Mar 1, 2017 11.55 11.90 11.45 11.75
6518 NASDAQ NATR Tue, Feb 28, 2017 11.78 11.90 11.10 11.40
6517 NASDAQ NATR Mon, Feb 27, 2017 11.35 12.00 11.30 11.85
6516 NASDAQ NATR Fri, Feb 24, 2017 11.25 11.50 11.25 11.35
6515 NASDAQ NATR Thu, Feb 23, 2017 11.40 11.75 11.20 11.30
6514 NASDAQ NATR Wed, Feb 22, 2017 11.55 11.65 11.05 11.25
6513 NASDAQ NATR Tue, Feb 21, 2017 12.10 12.10 11.60 11.70
6512 NASDAQ NATR Fri, Feb 17, 2017 11.95 12.15 11.85 12.00
6511 NASDAQ NATR Thu, Feb 16, 2017 12.30 12.30 11.75 11.85
6510 NASDAQ NATR Wed, Feb 15, 2017 12.45 12.49 11.98 12.20
6509 NASDAQ NATR Tue, Feb 14, 2017 12.25 12.60 12.20 12.55
6508 NASDAQ NATR Mon, Feb 13, 2017 12.50 12.60 12.40 12.50
6507 NASDAQ NATR Fri, Feb 10, 2017 12.00 12.30 11.90 12.20
6506 NASDAQ NATR Thu, Feb 9, 2017 11.58 11.90 11.58 11.85
6505 NASDAQ NATR Wed, Feb 8, 2017 11.75 11.85 11.25 11.30
6504 NASDAQ NATR Tue, Feb 7, 2017 12.38 12.38 11.76 11.85
6503 NASDAQ NATR Mon, Feb 6, 2017 12.55 12.55 12.10 12.20
6502 NASDAQ NATR Fri, Feb 3, 2017 12.60 12.60 12.50 12.55
6501 NASDAQ NATR Thu, Feb 2, 2017 12.50 12.60 12.50 12.60
6500 NASDAQ NATR Wed, Feb 1, 2017 12.75 12.90 12.50 12.55
6499 NASDAQ NATR Tue, Jan 31, 2017 12.63 12.85 12.50 12.75
6498 NASDAQ NATR Mon, Jan 30, 2017 12.85 12.90 12.50 12.55
6497 NASDAQ NATR Fri, Jan 27, 2017 12.95 12.95 12.85 12.85
6496 NASDAQ NATR Thu, Jan 26, 2017 12.95 13.00 12.85 13.00
6495 NASDAQ NATR Wed, Jan 25, 2017 13.25 13.25 12.90 13.00
6494 NASDAQ NATR Tue, Jan 24, 2017 13.20 13.20 12.85 13.05
6493 NASDAQ NATR Mon, Jan 23, 2017 12.95 12.98 12.75 12.90
6492 NASDAQ NATR Fri, Jan 20, 2017 12.55 13.00 12.50 12.70
6491 NASDAQ NATR Thu, Jan 19, 2017 13.07 13.07 12.55 12.65
6490 NASDAQ NATR Wed, Jan 18, 2017 12.80 13.25 12.75 12.75
6489 NASDAQ NATR Tue, Jan 17, 2017 12.90 13.85 12.90 12.90
6488 NASDAQ NATR Fri, Jan 13, 2017 12.70 13.10 12.60 13.00
6487 NASDAQ NATR Thu, Jan 12, 2017 12.55 12.85 12.55 12.75
6486 NASDAQ NATR Wed, Jan 11, 2017 12.75 12.75 12.50 12.60
6485 NASDAQ NATR Tue, Jan 10, 2017 12.70 13.00 12.45 12.70
6484 NASDAQ NATR Mon, Jan 9, 2017 14.05 14.05 13.00 13.00
6483 NASDAQ NATR Fri, Jan 6, 2017 14.45 14.45 14.00 14.00
6482 NASDAQ NATR Thu, Jan 5, 2017 14.35 14.45 14.15 14.35
6481 NASDAQ NATR Wed, Jan 4, 2017 14.70 14.70 14.48 14.55
6480 NASDAQ NATR Tue, Jan 3, 2017 15.30 15.30 14.45 14.55
6479 NASDAQ NATR Fri, Dec 30, 2016 15.10 15.25 14.40 15.00
6478 NASDAQ NATR Thu, Dec 29, 2016 15.05 15.10 14.75 14.95
6477 NASDAQ NATR Wed, Dec 28, 2016 14.80 14.90 14.55 14.70
6476 NASDAQ NATR Tue, Dec 27, 2016 15.15 15.15 14.65 14.75
6475 NASDAQ NATR Fri, Dec 23, 2016 14.80 14.90 14.35 14.90
6474 NASDAQ NATR Thu, Dec 22, 2016 14.85 14.85 14.35 14.60
6473 NASDAQ NATR Wed, Dec 21, 2016 14.90 15.10 14.75 14.90
6472 NASDAQ NATR Tue, Dec 20, 2016 14.90 15.10 14.75 15.05
6471 NASDAQ NATR Mon, Dec 19, 2016 14.81 15.05 14.80 14.90
6470 NASDAQ NATR Fri, Dec 16, 2016 14.85 15.00 14.70 14.95
6469 NASDAQ NATR Thu, Dec 15, 2016 14.65 14.95 14.30 14.75
6468 NASDAQ NATR Wed, Dec 14, 2016 15.00 15.05 14.55 14.75
6467 NASDAQ NATR Tue, Dec 13, 2016 15.10 15.10 14.58 14.90
6466 NASDAQ NATR Mon, Dec 12, 2016 15.25 15.25 14.65 14.80
6465 NASDAQ NATR Fri, Dec 9, 2016 15.25 15.35 15.10 15.25
6464 NASDAQ NATR Thu, Dec 8, 2016 14.65 15.15 14.48 15.10
6463 NASDAQ NATR Wed, Dec 7, 2016 14.45 14.95 14.25 14.65
6462 NASDAQ NATR Tue, Dec 6, 2016 14.50 14.60 14.30 14.50
6461 NASDAQ NATR Mon, Dec 5, 2016 14.50 14.60 14.40 14.40
6460 NASDAQ NATR Fri, Dec 2, 2016 14.60 14.75 14.25 14.40
6459 NASDAQ NATR Thu, Dec 1, 2016 15.10 15.35 14.50 14.65
6458 NASDAQ NATR Wed, Nov 30, 2016 15.10 15.25 14.90 15.10
6457 NASDAQ NATR Tue, Nov 29, 2016 15.20 15.20 14.75 15.05
6456 NASDAQ NATR Mon, Nov 28, 2016 15.00 15.25 14.35 15.05
6455 NASDAQ NATR Fri, Nov 25, 2016 15.25 15.25 13.85 15.05
6454 NASDAQ NATR Wed, Nov 23, 2016 15.00 15.25 14.65 15.20
6453 NASDAQ NATR Tue, Nov 22, 2016 15.10 15.25 15.00 15.20
6452 NASDAQ NATR Mon, Nov 21, 2016 14.90 15.15 14.85 15.15
6451 NASDAQ NATR Fri, Nov 18, 2016 14.55 15.10 14.00 15.05
6450 NASDAQ NATR Thu, Nov 17, 2016 14.60 14.70 14.20 14.55
6449 NASDAQ NATR Wed, Nov 16, 2016 14.30 14.90 14.10 14.45
6448 NASDAQ NATR Tue, Nov 15, 2016 14.40 14.70 13.90 14.45
6447 NASDAQ NATR Mon, Nov 14, 2016 14.50 14.80 14.30 14.45
6446 NASDAQ NATR Fri, Nov 11, 2016 14.05 14.60 13.65 14.20
6445 NASDAQ NATR Thu, Nov 10, 2016 13.80 14.10 12.05 13.90
6444 NASDAQ NATR Wed, Nov 9, 2016 13.00 14.10 12.00 13.80
6443 NASDAQ NATR Tue, Nov 8, 2016 11.70 12.65 11.70 11.90
6442 NASDAQ NATR Mon, Nov 7, 2016 11.80 11.95 11.10 11.85
6441 NASDAQ NATR Fri, Nov 4, 2016 12.15 12.28 11.60 11.60
6440 NASDAQ NATR Thu, Nov 3, 2016 12.15 13.00 12.05 12.05
6439 NASDAQ NATR Wed, Nov 2, 2016 12.35 12.50 12.10 12.25
6438 NASDAQ NATR Tue, Nov 1, 2016 13.50 13.50 12.35 12.45
6437 NASDAQ NATR Mon, Oct 31, 2016 13.15 13.15 12.50 12.55
6436 NASDAQ NATR Fri, Oct 28, 2016 13.00 13.30 13.00 13.20
6435 NASDAQ NATR Thu, Oct 27, 2016 13.75 13.75 13.05 13.10
6434 NASDAQ NATR Wed, Oct 26, 2016 14.10 14.10 13.80 13.85
6433 NASDAQ NATR Tue, Oct 25, 2016 14.60 14.60 14.00 14.05
6432 NASDAQ NATR Mon, Oct 24, 2016 14.80 14.80 14.55 14.60
6431 NASDAQ NATR Fri, Oct 21, 2016 14.65 14.90 14.59 14.65
6430 NASDAQ NATR Thu, Oct 20, 2016 15.05 15.05 14.60 14.80
6429 NASDAQ NATR Wed, Oct 19, 2016 14.95 15.20 14.95 15.00
6428 NASDAQ NATR Tue, Oct 18, 2016 15.05 15.25 15.05 15.05
6427 NASDAQ NATR Mon, Oct 17, 2016 15.10 15.15 15.00 15.10
6426 NASDAQ NATR Fri, Oct 14, 2016 15.70 15.80 15.00 15.10
6425 NASDAQ NATR Thu, Oct 13, 2016 16.15 16.25 15.50 15.50
6424 NASDAQ NATR Wed, Oct 12, 2016 16.00 16.40 16.00 16.35
6423 NASDAQ NATR Tue, Oct 11, 2016 16.40 16.40 15.65 16.00
6422 NASDAQ NATR Mon, Oct 10, 2016 16.15 16.45 16.00 16.30
6421 NASDAQ NATR Fri, Oct 7, 2016 16.01 16.08 15.96 16.00
6420 NASDAQ NATR Thu, Oct 6, 2016 16.30 16.36 16.15 16.16
6419 NASDAQ NATR Wed, Oct 5, 2016 16.23 16.37 16.13 16.30
6418 NASDAQ NATR Tue, Oct 4, 2016 16.00 16.24 15.93 16.00
6417 NASDAQ NATR Mon, Oct 3, 2016 15.98 16.25 15.81 16.03
6416 NASDAQ NATR Fri, Sep 30, 2016 15.70 16.05 15.70 16.00
6415 NASDAQ NATR Thu, Sep 29, 2016 15.72 15.97 15.64 15.72
6414 NASDAQ NATR Wed, Sep 28, 2016 15.77 15.97 15.67 15.83
6413 NASDAQ NATR Tue, Sep 27, 2016 15.20 15.92 15.13 15.85
6412 NASDAQ NATR Mon, Sep 26, 2016 14.98 15.23 14.93 15.11
6411 NASDAQ NATR Fri, Sep 23, 2016 15.35 15.35 14.72 15.04
6410 NASDAQ NATR Thu, Sep 22, 2016 14.99 15.71 14.97 15.35
6409 NASDAQ NATR Wed, Sep 21, 2016 14.89 15.00 14.74 14.86
6408 NASDAQ NATR Tue, Sep 20, 2016 14.90 14.90 14.74 14.74
6407 NASDAQ NATR Mon, Sep 19, 2016 15.15 15.50 14.81 14.89
6406 NASDAQ NATR Fri, Sep 16, 2016 14.79 15.35 14.59 15.04
6405 NASDAQ NATR Thu, Sep 15, 2016 13.69 14.73 13.69 14.68
6404 NASDAQ NATR Wed, Sep 14, 2016 13.15 13.84 13.15 13.69
6403 NASDAQ NATR Tue, Sep 13, 2016 13.88 14.00 13.08 13.14
6402 NASDAQ NATR Mon, Sep 12, 2016 14.80 14.94 13.80 13.96
6401 NASDAQ NATR Fri, Sep 9, 2016 14.79 14.97 14.60 14.79
6400 NASDAQ NATR Thu, Sep 8, 2016 14.72 14.93 14.72 14.82
6399 NASDAQ NATR Wed, Sep 7, 2016 14.47 14.83 14.42 14.79
6398 NASDAQ NATR Tue, Sep 6, 2016 14.09 14.47 14.04 14.46
6397 NASDAQ NATR Fri, Sep 2, 2016 13.72 14.11 13.70 14.09
6396 NASDAQ NATR Thu, Sep 1, 2016 13.76 13.76 13.51 13.67
6395 NASDAQ NATR Wed, Aug 31, 2016 13.61 13.70 13.50 13.59
6394 NASDAQ NATR Tue, Aug 30, 2016 13.68 13.95 13.59 13.68
6393 NASDAQ NATR Mon, Aug 29, 2016 14.06 14.10 13.76 13.80
6392 NASDAQ NATR Fri, Aug 26, 2016 14.10 14.10 13.89 14.02
6391 NASDAQ NATR Thu, Aug 25, 2016 14.01 14.22 14.01 14.07
6390 NASDAQ NATR Wed, Aug 24, 2016 13.30 14.05 13.30 13.97
6389 NASDAQ NATR Tue, Aug 23, 2016 12.75 13.39 12.75 13.26
6388 NASDAQ NATR Mon, Aug 22, 2016 12.75 12.95 12.30 12.80
6387 NASDAQ NATR Fri, Aug 19, 2016 12.61 13.95 12.61 12.87
6386 NASDAQ NATR Thu, Aug 18, 2016 13.20 13.25 12.67 12.78
6385 NASDAQ NATR Wed, Aug 17, 2016 13.31 13.40 13.19 13.21
6384 NASDAQ NATR Tue, Aug 16, 2016 13.89 13.90 12.83 13.40
6383 NASDAQ NATR Mon, Aug 15, 2016 14.15 14.25 13.75 13.83
6382 NASDAQ NATR Fri, Aug 12, 2016 13.98 14.28 13.80 14.15
6381 NASDAQ NATR Thu, Aug 11, 2016 13.44 13.90 13.22 13.87
6380 NASDAQ NATR Wed, Aug 10, 2016 12.82 13.35 12.79 13.29
6379 NASDAQ NATR Tue, Aug 9, 2016 12.08 12.89 11.51 12.87
6378 NASDAQ NATR Mon, Aug 8, 2016 12.12 12.66 12.12 12.66
6377 NASDAQ NATR Fri, Aug 5, 2016 12.26 12.50 12.00 12.47
6376 NASDAQ NATR Thu, Aug 4, 2016 11.88 12.18 11.87 12.11
6375 NASDAQ NATR Wed, Aug 3, 2016 11.84 11.95 11.75 11.88
6374 NASDAQ NATR Tue, Aug 2, 2016 11.91 11.92 11.80 11.87
6373 NASDAQ NATR Mon, Aug 1, 2016 11.83 11.94 11.66 11.91
6372 NASDAQ NATR Fri, Jul 29, 2016 11.57 11.90 11.57 11.80
6371 NASDAQ NATR Thu, Jul 28, 2016 11.51 11.90 11.38 11.81
6370 NASDAQ NATR Wed, Jul 27, 2016 11.55 11.55 11.45 11.47
6369 NASDAQ NATR Tue, Jul 26, 2016 11.83 11.90 11.41 11.49
6368 NASDAQ NATR Mon, Jul 25, 2016 11.49 11.90 11.49 11.73
6367 NASDAQ NATR Fri, Jul 22, 2016 11.25 11.68 11.25 11.60
6366 NASDAQ NATR Thu, Jul 21, 2016 11.20 11.24 11.02 11.23
6365 NASDAQ NATR Wed, Jul 20, 2016 11.05 11.26 11.05 11.22
6364 NASDAQ NATR Tue, Jul 19, 2016 11.47 11.47 10.97 11.05
6363 NASDAQ NATR Mon, Jul 18, 2016 11.27 11.50 11.08 11.47
6362 NASDAQ NATR Fri, Jul 15, 2016 11.33 11.39 11.06 11.31
6361 NASDAQ NATR Thu, Jul 14, 2016 11.44 11.54 11.17 11.21
6360 NASDAQ NATR Wed, Jul 13, 2016 11.24 11.47 11.09 11.40
6359 NASDAQ NATR Tue, Jul 12, 2016 11.00 11.43 11.00 11.25
6358 NASDAQ NATR Mon, Jul 11, 2016 10.64 11.00 10.52 10.96
6357 NASDAQ NATR Fri, Jul 8, 2016 10.35 10.62 10.35 10.61
6356 NASDAQ NATR Thu, Jul 7, 2016 10.52 10.52 10.01 10.25
6355 NASDAQ NATR Wed, Jul 6, 2016 9.68 10.37 9.68 10.32
6354 NASDAQ NATR Tue, Jul 5, 2016 9.81 9.84 9.64 9.79
6353 NASDAQ NATR Fri, Jul 1, 2016 9.70 9.99 9.48 9.88
6352 NASDAQ NATR Thu, Jun 30, 2016 9.83 9.86 9.45 9.53
6351 NASDAQ NATR Wed, Jun 29, 2016 9.90 9.92 9.82 9.85
6350 NASDAQ NATR Tue, Jun 28, 2016 10.03 10.03 9.84 9.90
6349 NASDAQ NATR Mon, Jun 27, 2016 9.94 9.97 9.77 9.81
6348 NASDAQ NATR Fri, Jun 24, 2016 9.58 10.25 9.55 10.14
6347 NASDAQ NATR Thu, Jun 23, 2016 9.92 10.18 9.75 10.18
6346 NASDAQ NATR Wed, Jun 22, 2016 9.95 10.51 9.75 9.80
6345 NASDAQ NATR Tue, Jun 21, 2016 10.00 10.08 9.71 9.92
6344 NASDAQ NATR Mon, Jun 20, 2016 10.41 11.09 9.90 9.92
6343 NASDAQ NATR Fri, Jun 17, 2016 10.27 10.41 10.10 10.31
6342 NASDAQ NATR Thu, Jun 16, 2016 10.17 10.66 10.12 10.24
6341 NASDAQ NATR Wed, Jun 15, 2016 10.00 11.06 9.90 10.30
6340 NASDAQ NATR Tue, Jun 14, 2016 9.90 10.39 9.81 10.01
6339 NASDAQ NATR Mon, Jun 13, 2016 11.06 11.18 9.57 10.00
6338 NASDAQ NATR Fri, Jun 10, 2016 10.98 11.22 10.80 11.02
6337 NASDAQ NATR Thu, Jun 9, 2016 11.09 11.77 10.77 11.04
6336 NASDAQ NATR Wed, Jun 8, 2016 10.64 11.10 10.64 11.05
6335 NASDAQ NATR Tue, Jun 7, 2016 10.48 10.88 10.32 10.69
6334 NASDAQ NATR Mon, Jun 6, 2016 10.15 10.56 10.15 10.48
6333 NASDAQ NATR Fri, Jun 3, 2016 10.24 10.37 10.16 10.23
6332 NASDAQ NATR Thu, Jun 2, 2016 10.64 10.68 10.18 10.21
6331 NASDAQ NATR Wed, Jun 1, 2016 9.88 10.85 9.52 10.76
6330 NASDAQ NATR Tue, May 31, 2016 9.36 9.89 9.36 9.84
6329 NASDAQ NATR Fri, May 27, 2016 9.16 9.31 9.16 9.27
6328 NASDAQ NATR Thu, May 26, 2016 9.23 9.23 9.16 9.18
6327 NASDAQ NATR Wed, May 25, 2016 9.14 9.20 9.14 9.19
6326 NASDAQ NATR Tue, May 24, 2016 9.06 9.20 9.06 9.14
6325 NASDAQ NATR Mon, May 23, 2016 9.04 9.19 9.00 9.06
6324 NASDAQ NATR Fri, May 20, 2016 9.07 9.20 9.07 9.18
6323 NASDAQ NATR Thu, May 19, 2016 9.00 9.05 8.85 9.00
6322 NASDAQ NATR Wed, May 18, 2016 9.05 9.20 8.98 9.13
6321 NASDAQ NATR Tue, May 17, 2016 9.22 9.33 9.00 9.02
6320 NASDAQ NATR Mon, May 16, 2016 9.03 9.35 9.03 9.30
6319 NASDAQ NATR Fri, May 13, 2016 8.58 9.16 8.58 9.01
6318 NASDAQ NATR Thu, May 12, 2016 8.83 9.11 8.58 8.59
6317 NASDAQ NATR Wed, May 11, 2016 8.54 8.92 8.50 8.72
6316 NASDAQ NATR Tue, May 10, 2016 9.23 9.58 9.06 9.22
6315 NASDAQ NATR Mon, May 9, 2016 9.36 9.64 9.22 9.26
6314 NASDAQ NATR Fri, May 6, 2016 9.00 9.50 9.00 9.35
6313 NASDAQ NATR Thu, May 5, 2016 9.40 9.40 9.15 9.15
6312 NASDAQ NATR Wed, May 4, 2016 9.16 9.55 9.16 9.20
6311 NASDAQ NATR Tue, May 3, 2016 9.11 9.31 8.92 9.23
6310 NASDAQ NATR Mon, May 2, 2016 9.54 9.54 9.03 9.15
6309 NASDAQ NATR Fri, Apr 29, 2016 9.83 9.85 9.49 9.58
6308 NASDAQ NATR Thu, Apr 28, 2016 10.03 10.09 9.78 9.88
6307 NASDAQ NATR Wed, Apr 27, 2016 10.35 10.50 10.01 10.08
6306 NASDAQ NATR Tue, Apr 26, 2016 10.58 10.58 10.28 10.35
6305 NASDAQ NATR Mon, Apr 25, 2016 10.50 10.82 10.42 10.60
6304 NASDAQ NATR Fri, Apr 22, 2016 10.53 10.57 10.33 10.50
6303 NASDAQ NATR Thu, Apr 21, 2016 10.33 10.48 10.00 10.47
6302 NASDAQ NATR Wed, Apr 20, 2016 10.06 10.38 10.06 10.30
6301 NASDAQ NATR Tue, Apr 19, 2016 9.98 10.17 9.94 10.06
6300 NASDAQ NATR Mon, Apr 18, 2016 9.73 10.13 9.73 9.90
6299 NASDAQ NATR Fri, Apr 15, 2016 9.56 10.01 9.48 9.74
6298 NASDAQ NATR Thu, Apr 14, 2016 9.30 9.70 9.30 9.61
6297 NASDAQ NATR Wed, Apr 13, 2016 9.03 9.33 9.03 9.26
6296 NASDAQ NATR Tue, Apr 12, 2016 9.05 9.07 9.01 9.02
6295 NASDAQ NATR Mon, Apr 11, 2016 9.16 9.27 8.99 8.99
6294 NASDAQ NATR Fri, Apr 8, 2016 9.07 9.11 9.01 9.06
6293 NASDAQ NATR Thu, Apr 7, 2016 9.04 9.08 8.98 9.04
6292 NASDAQ NATR Wed, Apr 6, 2016 8.97 9.17 8.94 9.04
6291 NASDAQ NATR Tue, Apr 5, 2016 9.31 9.31 9.31 8.93
6290 NASDAQ NATR Mon, Apr 4, 2016 9.48 9.48 9.30 9.31
6289 NASDAQ NATR Fri, Apr 1, 2016 9.46 9.48 9.26 9.43
6288 NASDAQ NATR Thu, Mar 31, 2016 9.87 9.87 9.63 9.79
6287 NASDAQ NATR Wed, Mar 30, 2016 9.91 10.06 9.85 9.89
6286 NASDAQ NATR Tue, Mar 29, 2016 9.37 9.78 9.37 9.85
6285 NASDAQ NATR Mon, Mar 28, 2016 9.07 9.25 9.05 9.24
6284 NASDAQ NATR Thu, Mar 24, 2016 8.77 8.77 8.77 9.01
6283 NASDAQ NATR Wed, Mar 23, 2016 8.74 8.89 8.72 8.76
6282 NASDAQ NATR Tue, Mar 22, 2016 8.85 8.86 8.70 8.73
6281 NASDAQ NATR Mon, Mar 21, 2016 8.85 9.00 8.66 8.87
6280 NASDAQ NATR Fri, Mar 18, 2016 8.98 9.09 8.70 8.79
6279 NASDAQ NATR Thu, Mar 17, 2016 8.71 8.95 8.71 8.92
6278 NASDAQ NATR Wed, Mar 16, 2016 9.00 9.18 8.85 8.99
6277 NASDAQ NATR Tue, Mar 15, 2016 9.01 9.01 9.01 9.01
6276 NASDAQ NATR Mon, Mar 14, 2016 9.19 9.19 9.01 9.05
6275 NASDAQ NATR Fri, Mar 11, 2016 9.02 9.25 9.02 9.24
6274 NASDAQ NATR Thu, Mar 10, 2016 9.01 9.08 8.98 9.04
6273 NASDAQ NATR Wed, Mar 9, 2016 9.01 9.01 9.01 9.04
6272 NASDAQ NATR Tue, Mar 8, 2016 9.11 9.32 9.00 9.41
6271 NASDAQ NATR Mon, Mar 7, 2016 9.07 9.69 9.07 9.41
6270 NASDAQ NATR Fri, Mar 4, 2016 8.77 8.77 8.77 9.06
6269 NASDAQ NATR Thu, Mar 3, 2016 8.55 8.55 8.55 8.77
6268 NASDAQ NATR Wed, Mar 2, 2016 8.35 8.56 8.33 8.41
6267 NASDAQ NATR Tue, Mar 1, 2016 8.38 8.38 8.38 8.41
6266 NASDAQ NATR Mon, Feb 29, 2016 8.24 8.96 8.24 8.38
6265 NASDAQ NATR Fri, Feb 26, 2016 8.00 8.40 7.97 8.17
6264 NASDAQ NATR Thu, Feb 25, 2016 7.70 8.00 7.70 7.96
6263 NASDAQ NATR Wed, Feb 24, 2016 7.64 7.82 7.57 7.82
6262 NASDAQ NATR Tue, Feb 23, 2016 7.52 7.82 7.50 7.64
6261 NASDAQ NATR Mon, Feb 22, 2016 8.18 8.18 7.52 7.52
6260 NASDAQ NATR Fri, Feb 19, 2016 7.85 8.07 7.85 7.90
6259 NASDAQ NATR Thu, Feb 18, 2016 7.90 8.06 7.31 7.87
6258 NASDAQ NATR Wed, Feb 17, 2016 8.13 8.35 7.91 7.92
6257 NASDAQ NATR Tue, Feb 16, 2016 7.57 8.16 7.55 8.10
6256 NASDAQ NATR Fri, Feb 12, 2016 7.57 7.57 7.46 7.49
6255 NASDAQ NATR Thu, Feb 11, 2016 7.15 7.57 7.15 7.51
6254 NASDAQ NATR Wed, Feb 10, 2016 7.35 7.36 7.22 7.30
6253 NASDAQ NATR Tue, Feb 9, 2016 7.36 7.36 7.30 7.33
6252 NASDAQ NATR Mon, Feb 8, 2016 7.55 7.60 7.45 7.48
6251 NASDAQ NATR Fri, Feb 5, 2016 7.73 8.23 7.56 7.56
6250 NASDAQ NATR Thu, Feb 4, 2016 7.98 8.10 7.72 7.75
6249 NASDAQ NATR Wed, Feb 3, 2016 8.08 8.50 7.96 8.02
6248 NASDAQ NATR Tue, Feb 2, 2016 8.10 8.24 7.93 7.98
6247 NASDAQ NATR Mon, Feb 1, 2016 8.53 8.53 8.10 8.10
6246 NASDAQ NATR Fri, Jan 29, 2016 8.42 8.60 8.42 8.58
6245 NASDAQ NATR Thu, Jan 28, 2016 8.43 8.50 8.11 8.41
6244 NASDAQ NATR Wed, Jan 27, 2016 8.57 8.93 8.40 8.40
6243 NASDAQ NATR Tue, Jan 26, 2016 8.97 8.97 8.79 8.86
6242 NASDAQ NATR Mon, Jan 25, 2016 8.96 9.07 8.88 8.88
6241 NASDAQ NATR Fri, Jan 22, 2016 8.95 9.12 8.86 9.09
6240 NASDAQ NATR Thu, Jan 21, 2016 9.01 9.08 8.65 8.84
6239 NASDAQ NATR Wed, Jan 20, 2016 8.85 9.23 8.67 9.14
6238 NASDAQ NATR Tue, Jan 19, 2016 8.96 8.98 8.82 8.93
6237 NASDAQ NATR Fri, Jan 15, 2016 8.88 9.00 8.80 8.90
6236 NASDAQ NATR Thu, Jan 14, 2016 9.02 9.30 8.88 9.15
6235 NASDAQ NATR Wed, Jan 13, 2016 9.12 9.16 8.91 9.01
6234 NASDAQ NATR Tue, Jan 12, 2016 9.30 9.30 8.95 9.09
6233 NASDAQ NATR Mon, Jan 11, 2016 8.88 9.32 8.81 9.27
6232 NASDAQ NATR Fri, Jan 8, 2016 9.02 9.26 8.78 8.92
6231 NASDAQ NATR Thu, Jan 7, 2016 9.73 9.73 8.61 8.96
6230 NASDAQ NATR Wed, Jan 6, 2016 9.88 10.10 9.73 9.92
6229 NASDAQ NATR Tue, Jan 5, 2016 10.00 10.30 9.62 9.99
6228 NASDAQ NATR Mon, Jan 4, 2016 10.02 10.02 9.59 9.93
6227 NASDAQ NATR Thu, Dec 31, 2015 10.53 10.66 10.12 10.12
6226 NASDAQ NATR Wed, Dec 30, 2015 11.07 11.27 10.68 10.70
6225 NASDAQ NATR Tue, Dec 29, 2015 11.14 11.34 10.95 11.18
6224 NASDAQ NATR Mon, Dec 28, 2015 11.11 11.19 10.87 10.96
6223 NASDAQ NATR Thu, Dec 24, 2015 11.36 11.42 10.90 11.21
6222 NASDAQ NATR Wed, Dec 23, 2015 11.24 11.50 11.09 11.33
6221 NASDAQ NATR Tue, Dec 22, 2015 10.84 11.27 10.55 11.21
6220 NASDAQ NATR Mon, Dec 21, 2015 10.64 10.90 10.49 10.83
6219 NASDAQ NATR Fri, Dec 18, 2015 10.71 10.75 10.47 10.58
6218 NASDAQ NATR Thu, Dec 17, 2015 10.98 11.15 10.75 10.79
6217 NASDAQ NATR Wed, Dec 16, 2015 10.75 10.97 10.75 10.87
6216 NASDAQ NATR Tue, Dec 15, 2015 10.67 10.75 10.50 10.72
6215 NASDAQ NATR Mon, Dec 14, 2015 10.54 11.01 10.50 10.54
6214 NASDAQ NATR Fri, Dec 11, 2015 10.30 10.67 10.30 10.57
6213 NASDAQ NATR Thu, Dec 10, 2015 10.82 10.94 10.36 10.55
6212 NASDAQ NATR Wed, Dec 9, 2015 10.87 10.99 10.74 10.77
6211 NASDAQ NATR Tue, Dec 8, 2015 11.13 11.31 10.74 11.03
6210 NASDAQ NATR Mon, Dec 7, 2015 11.60 11.93 11.12 11.32
6209 NASDAQ NATR Fri, Dec 4, 2015 11.54 11.63 11.53 11.54
6208 NASDAQ NATR Thu, Dec 3, 2015 11.76 11.90 11.50 11.54
6207 NASDAQ NATR Wed, Dec 2, 2015 11.93 11.93 11.75 11.76
6206 NASDAQ NATR Tue, Dec 1, 2015 11.94 11.94 11.69 11.82
6205 NASDAQ NATR Mon, Nov 30, 2015 12.26 12.46 11.75 11.77
6204 NASDAQ NATR Fri, Nov 27, 2015 12.23 12.41 11.95 12.27
6203 NASDAQ NATR Wed, Nov 25, 2015 11.39 12.37 11.38 12.32
6202 NASDAQ NATR Tue, Nov 24, 2015 11.36 11.55 11.18 11.47
6201 NASDAQ NATR Mon, Nov 23, 2015 11.68 11.77 11.51 11.65
6200 NASDAQ NATR Fri, Nov 20, 2015 11.01 11.66 11.01 11.65
6199 NASDAQ NATR Thu, Nov 19, 2015 10.99 11.04 10.52 10.73
6198 NASDAQ NATR Wed, Nov 18, 2015 10.85 10.97 10.85 10.89
6197 NASDAQ NATR Tue, Nov 17, 2015 10.87 11.06 10.85 10.95
6196 NASDAQ NATR Mon, Nov 16, 2015 11.24 11.71 10.78 10.95
6195 NASDAQ NATR Fri, Nov 13, 2015 12.10 12.34 11.48 11.54
6194 NASDAQ NATR Thu, Nov 12, 2015 12.28 12.59 12.06 12.21
6193 NASDAQ NATR Wed, Nov 11, 2015 12.10 12.60 11.73 12.43
6192 NASDAQ NATR Tue, Nov 10, 2015 11.97 12.23 11.97 12.16
6191 NASDAQ NATR Mon, Nov 9, 2015 11.93 12.16 11.91 12.01
6190 NASDAQ NATR Fri, Nov 6, 2015 11.89 12.00 11.78 11.95
6189 NASDAQ NATR Thu, Nov 5, 2015 11.95 11.99 11.71 11.95
6188 NASDAQ NATR Wed, Nov 4, 2015 12.05 12.05 11.60 11.98
6187 NASDAQ NATR Tue, Nov 3, 2015 11.73 12.17 11.65 12.17
6186 NASDAQ NATR Mon, Nov 2, 2015 11.77 11.86 11.55 11.81
6185 NASDAQ NATR Fri, Oct 30, 2015 12.32 12.41 11.85 11.85
6184 NASDAQ NATR Thu, Oct 29, 2015 12.18 12.53 11.92 12.33
6183 NASDAQ NATR Wed, Oct 28, 2015 11.64 12.20 11.64 12.19
6182 NASDAQ NATR Tue, Oct 27, 2015 11.83 11.83 11.55 11.57
6181 NASDAQ NATR Mon, Oct 26, 2015 12.02 12.03 11.75 11.80
6180 NASDAQ NATR Fri, Oct 23, 2015 11.88 12.07 11.88 12.03
6179 NASDAQ NATR Thu, Oct 22, 2015 11.71 11.95 11.71 11.87
6178 NASDAQ NATR Wed, Oct 21, 2015 11.92 11.96 11.51 11.60
6177 NASDAQ NATR Tue, Oct 20, 2015 11.98 12.02 11.77 11.82
6176 NASDAQ NATR Mon, Oct 19, 2015 12.03 12.13 11.95 12.01
6175 NASDAQ NATR Fri, Oct 16, 2015 12.27 12.27 12.09 12.13
6174 NASDAQ NATR Thu, Oct 15, 2015 12.10 12.22 11.77 12.22
6173 NASDAQ NATR Wed, Oct 14, 2015 12.45 12.55 12.06 12.07
6172 NASDAQ NATR Tue, Oct 13, 2015 12.50 12.60 12.47 12.47
6171 NASDAQ NATR Mon, Oct 12, 2015 12.54 12.63 12.45 12.51
6170 NASDAQ NATR Fri, Oct 9, 2015 12.49 12.63 12.45 12.45
6169 NASDAQ NATR Thu, Oct 8, 2015 12.41 12.60 12.30 12.47
6168 NASDAQ NATR Wed, Oct 7, 2015 12.27 12.59 12.25 12.44
6167 NASDAQ NATR Tue, Oct 6, 2015 12.37 12.37 12.13 12.17
6166 NASDAQ NATR Mon, Oct 5, 2015 12.06 12.45 12.06 12.43
6165 NASDAQ NATR Fri, Oct 2, 2015 11.94 12.08 11.72 11.99
6164 NASDAQ NATR Thu, Oct 1, 2015 12.06 12.15 11.89 12.04
6163 NASDAQ NATR Wed, Sep 30, 2015 11.75 12.04 11.64 11.98
6162 NASDAQ NATR Tue, Sep 29, 2015 11.65 11.81 11.47 11.69
6161 NASDAQ NATR Mon, Sep 28, 2015 11.66 11.79 11.42 11.65
6160 NASDAQ NATR Fri, Sep 25, 2015 11.95 12.11 11.60 11.64
6159 NASDAQ NATR Thu, Sep 24, 2015 11.80 11.95 11.68 11.93
6158 NASDAQ NATR Wed, Sep 23, 2015 11.92 11.92 11.68 11.78
6157 NASDAQ NATR Tue, Sep 22, 2015 11.81 11.95 11.53 11.85
6156 NASDAQ NATR Mon, Sep 21, 2015 11.44 11.94 11.44 11.83
6155 NASDAQ NATR Fri, Sep 18, 2015 11.62 11.92 11.30 11.30
6154 NASDAQ NATR Thu, Sep 17, 2015 11.93 12.47 11.75 11.83
6153 NASDAQ NATR Wed, Sep 16, 2015 12.27 12.27 11.84 11.87
6152 NASDAQ NATR Tue, Sep 15, 2015 12.20 12.26 12.09 12.19
6151 NASDAQ NATR Mon, Sep 14, 2015 12.36 12.49 12.01 12.09
6150 NASDAQ NATR Fri, Sep 11, 2015 12.04 12.52 12.04 12.29
6149 NASDAQ NATR Thu, Sep 10, 2015 11.82 12.16 11.82 12.07
6148 NASDAQ NATR Wed, Sep 9, 2015 12.49 12.64 12.28 12.34
6147 NASDAQ NATR Tue, Sep 8, 2015 12.39 12.64 12.21 12.39
6146 NASDAQ NATR Fri, Sep 4, 2015 11.97 12.60 11.94 12.23
6145 NASDAQ NATR Thu, Sep 3, 2015 12.42 12.42 12.11 12.13
6144 NASDAQ NATR Wed, Sep 2, 2015 12.21 12.29 12.12 12.20
6143 NASDAQ NATR Tue, Sep 1, 2015 12.27 12.27 12.01 12.11
6142 NASDAQ NATR Mon, Aug 31, 2015 12.04 12.29 12.04 12.24
6141 NASDAQ NATR Fri, Aug 28, 2015 11.84 12.44 11.84 12.06
6140 NASDAQ NATR Thu, Aug 27, 2015 12.05 12.58 11.73 11.91
6139 NASDAQ NATR Wed, Aug 26, 2015 12.03 12.39 11.74 12.08
6138 NASDAQ NATR Tue, Aug 25, 2015 12.33 12.69 11.47 11.47
6137 NASDAQ NATR Mon, Aug 24, 2015 12.45 12.99 11.99 11.99
6136 NASDAQ NATR Fri, Aug 21, 2015 12.55 13.05 12.55 12.90
6135 NASDAQ NATR Thu, Aug 20, 2015 12.85 13.03 12.84 12.84
6134 NASDAQ NATR Wed, Aug 19, 2015 12.97 13.28 12.89 12.89
6133 NASDAQ NATR Tue, Aug 18, 2015 12.95 13.10 12.93 12.98
6132 NASDAQ NATR Mon, Aug 17, 2015 12.84 13.00 12.82 12.93
6131 NASDAQ NATR Fri, Aug 14, 2015 12.82 12.95 12.81 12.94
6130 NASDAQ NATR Thu, Aug 13, 2015 12.86 12.92 12.81 12.85
6129 NASDAQ NATR Wed, Aug 12, 2015 12.80 12.95 12.80 12.91
6128 NASDAQ NATR Tue, Aug 11, 2015 12.85 12.93 12.83 12.87
6127 NASDAQ NATR Mon, Aug 10, 2015 12.88 13.02 12.84 12.93
6126 NASDAQ NATR Fri, Aug 7, 2015 12.86 13.05 12.84 12.84
6125 NASDAQ NATR Thu, Aug 6, 2015 13.07 13.07 12.93 12.94
6124 NASDAQ NATR Wed, Aug 5, 2015 13.08 13.08 12.90 13.02
6123 NASDAQ NATR Tue, Aug 4, 2015 12.72 13.05 12.71 12.95
6122 NASDAQ NATR Mon, Aug 3, 2015 12.48 12.64 12.33 12.56
6121 NASDAQ NATR Fri, Jul 31, 2015 12.61 12.74 12.44 12.53
6120 NASDAQ NATR Thu, Jul 30, 2015 12.38 12.63 12.18 12.54
6119 NASDAQ NATR Wed, Jul 29, 2015 12.14 12.53 12.08 12.35
6118 NASDAQ NATR Tue, Jul 28, 2015 11.85 12.61 11.72 12.11
6117 NASDAQ NATR Mon, Jul 27, 2015 12.41 12.43 11.72 11.88
6116 NASDAQ NATR Fri, Jul 24, 2015 12.65 12.85 12.47 12.47
6115 NASDAQ NATR Thu, Jul 23, 2015 12.66 12.74 12.59 12.60
6114 NASDAQ NATR Wed, Jul 22, 2015 12.70 12.72 12.59 12.67
6113 NASDAQ NATR Tue, Jul 21, 2015 12.56 12.75 12.56 12.69
6112 NASDAQ NATR Mon, Jul 20, 2015 12.70 12.83 12.39 12.60
6111 NASDAQ NATR Fri, Jul 17, 2015 12.83 12.94 12.72 12.74
6110 NASDAQ NATR Thu, Jul 16, 2015 12.86 13.01 12.78 12.88
6109 NASDAQ NATR Wed, Jul 15, 2015 13.04 13.04 12.84 12.84
6108 NASDAQ NATR Tue, Jul 14, 2015 13.01 13.05 12.86 12.99
6107 NASDAQ NATR Mon, Jul 13, 2015 12.85 13.08 12.71 12.96
6106 NASDAQ NATR Fri, Jul 10, 2015 12.90 13.00 12.80 12.90
6105 NASDAQ NATR Thu, Jul 9, 2015 13.05 13.06 12.75 12.86
6104 NASDAQ NATR Wed, Jul 8, 2015 12.89 12.95 12.75 12.81
6103 NASDAQ NATR Tue, Jul 7, 2015 12.99 13.19 12.88 12.95
6102 NASDAQ NATR Mon, Jul 6, 2015 13.18 13.18 12.77 13.06
6101 NASDAQ NATR Thu, Jul 2, 2015 13.56 13.56 13.26 13.45
6100 NASDAQ NATR Wed, Jul 1, 2015 13.78 13.84 13.32 13.52
6099 NASDAQ NATR Tue, Jun 30, 2015 13.64 13.75 13.37 13.75
6098 NASDAQ NATR Mon, Jun 29, 2015 13.55 14.11 13.54 13.61
6097 NASDAQ NATR Fri, Jun 26, 2015 13.50 13.74 13.25 13.49
6096 NASDAQ NATR Thu, Jun 25, 2015 14.03 14.03 13.38 13.49
6095 NASDAQ NATR Wed, Jun 24, 2015 12.66 13.22 12.70 13.15
6094 NASDAQ NATR Tue, Jun 23, 2015 12.35 12.77 12.30 12.74
6093 NASDAQ NATR Mon, Jun 22, 2015 13.29 13.35 12.22 12.32
6092 NASDAQ NATR Fri, Jun 19, 2015 13.15 13.36 13.08 13.35
6091 NASDAQ NATR Thu, Jun 18, 2015 13.25 13.29 13.04 13.10
6090 NASDAQ NATR Wed, Jun 17, 2015 13.36 13.37 13.10 13.14
6089 NASDAQ NATR Tue, Jun 16, 2015 13.04 13.53 13.01 13.28
6088 NASDAQ NATR Mon, Jun 15, 2015 12.66 13.54 12.66 12.99
6087 NASDAQ NATR Fri, Jun 12, 2015 12.58 12.80 12.45 12.60
6086 NASDAQ NATR Thu, Jun 11, 2015 12.60 12.75 12.56 12.59
6085 NASDAQ NATR Wed, Jun 10, 2015 12.81 12.91 12.51 12.60
6084 NASDAQ NATR Tue, Jun 9, 2015 12.86 12.88 12.66 12.75
6083 NASDAQ NATR Mon, Jun 8, 2015 12.84 12.90 12.75 12.82
6082 NASDAQ NATR Fri, Jun 5, 2015 12.78 12.90 12.77 12.90
6081 NASDAQ NATR Thu, Jun 4, 2015 12.76 13.10 12.71 12.77
6080 NASDAQ NATR Wed, Jun 3, 2015 12.75 12.95 12.75 12.85
6079 NASDAQ NATR Tue, Jun 2, 2015 12.83 12.91 12.64 12.70
6078 NASDAQ NATR Mon, Jun 1, 2015 12.90 13.03 12.69 12.85
6077 NASDAQ NATR Fri, May 29, 2015 12.85 12.99 12.67 12.83
6076 NASDAQ NATR Thu, May 28, 2015 12.65 12.93 12.62 12.86
6075 NASDAQ NATR Wed, May 27, 2015 12.54 12.66 12.51 12.66
6074 NASDAQ NATR Tue, May 26, 2015 12.57 12.67 12.52 12.57
6073 NASDAQ NATR Fri, May 22, 2015 12.80 12.92 12.65 12.70
6072 NASDAQ NATR Thu, May 21, 2015 12.95 12.95 12.78 12.81
6071 NASDAQ NATR Wed, May 20, 2015 12.90 12.94 12.80 12.90
6070 NASDAQ NATR Tue, May 19, 2015 12.97 12.98 12.90 12.90
6069 NASDAQ NATR Mon, May 18, 2015 12.90 12.94 12.85 12.92
6068 NASDAQ NATR Fri, May 15, 2015 12.90 13.00 12.90 12.90
6067 NASDAQ NATR Thu, May 14, 2015 12.93 12.96 12.90 12.90
6066 NASDAQ NATR Wed, May 13, 2015 12.99 13.00 12.89 12.90
6065 NASDAQ NATR Tue, May 12, 2015 12.82 12.96 12.80 12.90
6064 NASDAQ NATR Mon, May 11, 2015 12.97 12.98 12.90 12.91
6063 NASDAQ NATR Fri, May 8, 2015 12.95 13.03 12.80 12.91
6062 NASDAQ NATR Thu, May 7, 2015 12.90 13.03 12.89 12.90
6061 NASDAQ NATR Wed, May 6, 2015 12.89 13.05 12.84 12.90
6060 NASDAQ NATR Tue, May 5, 2015 12.85 13.14 12.84 12.85
6059 NASDAQ NATR Mon, May 4, 2015 12.97 13.13 12.85 12.85
6058 NASDAQ NATR Fri, May 1, 2015 13.02 13.05 12.84 13.00
6057 NASDAQ NATR Thu, Apr 30, 2015 13.00 13.11 13.00 13.01
6056 NASDAQ NATR Wed, Apr 29, 2015 13.17 13.17 13.00 13.00
6055 NASDAQ NATR Tue, Apr 28, 2015 13.08 13.26 13.12 13.17
6054 NASDAQ NATR Mon, Apr 27, 2015 13.01 13.19 12.91 13.01
6053 NASDAQ NATR Fri, Apr 24, 2015 13.06 13.40 12.90 13.01
6052 NASDAQ NATR Thu, Apr 23, 2015 12.69 13.09 12.69 13.00
6051 NASDAQ NATR Wed, Apr 22, 2015 12.68 12.89 12.68 12.79
6050 NASDAQ NATR Tue, Apr 21, 2015 12.87 12.96 12.46 12.75
6049 NASDAQ NATR Mon, Apr 20, 2015 12.78 12.94 12.62 12.83
6048 NASDAQ NATR Fri, Apr 17, 2015 13.04 13.04 12.55 12.77
6047 NASDAQ NATR Thu, Apr 16, 2015 12.85 13.18 12.53 13.13
6046 NASDAQ NATR Wed, Apr 15, 2015 12.84 12.97 12.73 12.86
6045 NASDAQ NATR Tue, Apr 14, 2015 12.69 13.02 12.68 12.79
6044 NASDAQ NATR Mon, Apr 13, 2015 12.56 12.81 12.24 12.73
6043 NASDAQ NATR Fri, Apr 10, 2015 12.73 12.77 12.52 12.59
6042 NASDAQ NATR Thu, Apr 9, 2015 12.73 12.96 12.01 12.66
6041 NASDAQ NATR Wed, Apr 8, 2015 12.79 13.00 11.89 12.80
6040 NASDAQ NATR Tue, Apr 7, 2015 13.05 13.24 12.69 12.76
6039 NASDAQ NATR Mon, Apr 6, 2015 12.83 13.28 12.83 13.05
6038 NASDAQ NATR Thu, Apr 2, 2015 13.00 13.02 12.75 12.83
6037 NASDAQ NATR Wed, Apr 1, 2015 13.15 13.32 12.85 13.01
6036 NASDAQ NATR Tue, Mar 31, 2015 13.13 13.20 12.97 13.12
6035 NASDAQ NATR Mon, Mar 30, 2015 13.15 13.33 13.00 13.25
6034 NASDAQ NATR Fri, Mar 27, 2015 12.99 13.15 12.75 13.07
6033 NASDAQ NATR Thu, Mar 26, 2015 12.70 13.01 12.70 12.93
6032 NASDAQ NATR Wed, Mar 25, 2015 13.07 13.25 12.73 12.75
6031 NASDAQ NATR Tue, Mar 24, 2015 13.26 13.20 13.00 13.03
6030 NASDAQ NATR Mon, Mar 23, 2015 12.97 13.40 12.96 13.20
6029 NASDAQ NATR Fri, Mar 20, 2015 12.87 13.12 12.87 13.03
6028 NASDAQ NATR Thu, Mar 19, 2015 12.92 12.98 12.76 12.86
6027 NASDAQ NATR Wed, Mar 18, 2015 12.34 13.16 12.38 12.99
6026 NASDAQ NATR Tue, Mar 17, 2015 12.34 12.64 12.17 12.36
6025 NASDAQ NATR Mon, Mar 16, 2015 12.47 12.64 12.33 12.36
6024 NASDAQ NATR Fri, Mar 13, 2015 12.39 12.56 12.17 12.43
6023 NASDAQ NATR Thu, Mar 12, 2015 12.10 12.60 12.06 12.47
6022 NASDAQ NATR Wed, Mar 11, 2015 12.06 12.19 11.88 11.98
6021 NASDAQ NATR Tue, Mar 10, 2015 12.26 12.43 11.96 12.01
6020 NASDAQ NATR Mon, Mar 9, 2015 12.34 12.74 12.31 12.42
6019 NASDAQ NATR Fri, Mar 6, 2015 12.50 12.77 12.20 12.20
6018 NASDAQ NATR Thu, Mar 5, 2015 12.72 12.95 12.50 12.57
6017 NASDAQ NATR Wed, Mar 4, 2015 12.85 12.96 12.70 12.72
6016 NASDAQ NATR Tue, Mar 3, 2015 12.85 13.10 12.71 12.88
6015 NASDAQ NATR Mon, Mar 2, 2015 13.12 13.31 12.86 12.87
6014 NASDAQ NATR Fri, Feb 27, 2015 13.03 13.30 12.95 13.05
6013 NASDAQ NATR Thu, Feb 26, 2015 13.79 13.79 12.66 13.09
6012 NASDAQ NATR Wed, Feb 25, 2015 14.27 14.21 13.94 14.05
6011 NASDAQ NATR Tue, Feb 24, 2015 14.00 14.31 13.98 14.19
6010 NASDAQ NATR Mon, Feb 23, 2015 13.75 14.06 13.55 13.98
6009 NASDAQ NATR Fri, Feb 20, 2015 14.05 14.07 13.75 13.85
6008 NASDAQ NATR Thu, Feb 19, 2015 14.00 14.26 13.72 14.01
6007 NASDAQ NATR Wed, Feb 18, 2015 14.13 14.13 13.81 13.99
6006 NASDAQ NATR Tue, Feb 17, 2015 14.23 14.25 13.97 14.19
6005 NASDAQ NATR Fri, Feb 13, 2015 14.30 14.40 14.16 14.18
6004 NASDAQ NATR Thu, Feb 12, 2015 14.15 14.39 14.00 14.22
6003 NASDAQ NATR Wed, Feb 11, 2015 14.03 14.36 14.03 14.08
6002 NASDAQ NATR Tue, Feb 10, 2015 14.38 14.43 14.10 14.10
6001 NASDAQ NATR Mon, Feb 9, 2015 14.24 14.44 14.15 14.26
6000 NASDAQ NATR Fri, Feb 6, 2015 14.21 14.60 14.20 14.24
5999 NASDAQ NATR Thu, Feb 5, 2015 13.88 14.22 13.64 14.19
5998 NASDAQ NATR Wed, Feb 4, 2015 13.98 14.01 13.36 13.91
5997 NASDAQ NATR Tue, Feb 3, 2015 14.12 14.40 13.86 14.03
5996 NASDAQ NATR Mon, Feb 2, 2015 13.77 14.14 13.45 14.11
5995 NASDAQ NATR Fri, Jan 30, 2015 14.44 14.80 13.82 13.83
5994 NASDAQ NATR Thu, Jan 29, 2015 14.28 14.60 14.00 14.60
5993 NASDAQ NATR Wed, Jan 28, 2015 14.57 14.60 14.17 14.19
5992 NASDAQ NATR Tue, Jan 27, 2015 14.43 14.69 14.25 14.50
5991 NASDAQ NATR Mon, Jan 26, 2015 14.47 14.74 14.28 14.52
5990 NASDAQ NATR Fri, Jan 23, 2015 14.66 14.71 14.43 14.52
5989 NASDAQ NATR Thu, Jan 22, 2015 14.37 14.66 14.17 14.65
5988 NASDAQ NATR Wed, Jan 21, 2015 14.49 14.64 14.24 14.25
5987 NASDAQ NATR Tue, Jan 20, 2015 14.53 14.65 14.45 14.58
5986 NASDAQ NATR Fri, Jan 16, 2015 14.23 14.61 14.23 14.60
5985 NASDAQ NATR Thu, Jan 15, 2015 14.31 14.39 14.15 14.30
5984 NASDAQ NATR Wed, Jan 14, 2015 14.33 14.49 14.30 14.31
5983 NASDAQ NATR Tue, Jan 13, 2015 14.43 14.86 14.32 14.45
5982 NASDAQ NATR Mon, Jan 12, 2015 14.21 14.49 14.16 14.39
5981 NASDAQ NATR Fri, Jan 9, 2015 14.21 14.49 14.12 14.34
5980 NASDAQ NATR Thu, Jan 8, 2015 14.61 14.80 14.28 14.41
5979 NASDAQ NATR Wed, Jan 7, 2015 14.74 14.80 14.24 14.47
5978 NASDAQ NATR Tue, Jan 6, 2015 14.65 14.87 14.48 14.60
5977 NASDAQ NATR Mon, Jan 5, 2015 14.71 14.98 14.54 14.61
5976 NASDAQ NATR Fri, Jan 2, 2015 14.82 14.97 14.55 14.71
5975 NASDAQ NATR Wed, Dec 31, 2014 14.99 14.84 14.72 14.82
5974 NASDAQ NATR Tue, Dec 30, 2014 14.81 15.02 14.60 14.92
5973 NASDAQ NATR Mon, Dec 29, 2014 14.69 15.18 14.56 14.84
5972 NASDAQ NATR Fri, Dec 26, 2014 14.98 15.04 14.60 14.72
5971 NASDAQ NATR Wed, Dec 24, 2014 15.04 15.07 14.65 14.85
5970 NASDAQ NATR Tue, Dec 23, 2014 15.18 15.40 14.88 14.94
5969 NASDAQ NATR Mon, Dec 22, 2014 15.08 15.20 14.90 15.15
5968 NASDAQ NATR Fri, Dec 19, 2014 15.03 15.36 15.03 15.04
5967 NASDAQ NATR Thu, Dec 18, 2014 15.20 15.20 14.75 15.10
5966 NASDAQ NATR Wed, Dec 17, 2014 14.97 15.14 14.64 15.12
5965 NASDAQ NATR Tue, Dec 16, 2014 14.62 15.10 14.68 14.99
5964 NASDAQ NATR Mon, Dec 15, 2014 14.77 14.97 14.60 14.61
5963 NASDAQ NATR Fri, Dec 12, 2014 14.87 15.07 14.59 14.67
5962 NASDAQ NATR Thu, Dec 11, 2014 15.02 15.40 14.85 15.05
5961 NASDAQ NATR Wed, Dec 10, 2014 15.20 15.60 14.90 14.91
5960 NASDAQ NATR Tue, Dec 9, 2014 14.81 15.56 14.80 15.39
5959 NASDAQ NATR Mon, Dec 8, 2014 14.80 15.10 14.80 14.93
5958 NASDAQ NATR Fri, Dec 5, 2014 14.87 14.99 14.80 14.89
5957 NASDAQ NATR Thu, Dec 4, 2014 14.91 15.08 14.78 14.92
5956 NASDAQ NATR Wed, Dec 3, 2014 14.88 15.00 14.80 14.95
5955 NASDAQ NATR Tue, Dec 2, 2014 14.85 15.11 14.80 14.94
5954 NASDAQ NATR Mon, Dec 1, 2014 14.85 15.03 14.80 14.80
5953 NASDAQ NATR Fri, Nov 28, 2014 15.02 15.13 14.81 14.92
5952 NASDAQ NATR Wed, Nov 26, 2014 14.92 15.17 14.92 15.09
5951 NASDAQ NATR Tue, Nov 25, 2014 15.17 15.09 14.90 15.03
5950 NASDAQ NATR Mon, Nov 24, 2014 15.11 15.28 15.00 15.11
5949 NASDAQ NATR Fri, Nov 21, 2014 15.29 15.29 14.86 15.10
5948 NASDAQ NATR Thu, Nov 20, 2014 15.08 15.18 14.95 15.11
5947 NASDAQ NATR Wed, Nov 19, 2014 15.23 15.39 14.90 15.07
5946 NASDAQ NATR Tue, Nov 18, 2014 15.07 15.33 15.00 15.30
5945 NASDAQ NATR Mon, Nov 17, 2014 14.91 15.20 14.80 15.11
5944 NASDAQ NATR Fri, Nov 14, 2014 15.14 15.16 14.81 14.88
5943 NASDAQ NATR Thu, Nov 13, 2014 15.32 15.32 15.05 15.20
5942 NASDAQ NATR Wed, Nov 12, 2014 14.91 15.38 14.89 15.35
5941 NASDAQ NATR Tue, Nov 11, 2014 15.00 15.04 14.89 15.01
5940 NASDAQ NATR Mon, Nov 10, 2014 15.00 15.05 14.92 15.02
5939 NASDAQ NATR Fri, Nov 7, 2014 14.77 15.00 14.77 14.98
5938 NASDAQ NATR Thu, Nov 6, 2014 14.70 15.05 14.52 15.00
5937 NASDAQ NATR Wed, Nov 5, 2014 14.90 15.09 14.64 14.81
5936 NASDAQ NATR Tue, Nov 4, 2014 14.90 14.95 14.62 14.73
5935 NASDAQ NATR Mon, Nov 3, 2014 15.00 15.26 14.75 14.85
5934 NASDAQ NATR Fri, Oct 31, 2014 15.19 15.19 14.83 14.90
5933 NASDAQ NATR Thu, Oct 30, 2014 14.75 15.16 14.70 14.99
5932 NASDAQ NATR Wed, Oct 29, 2014 15.16 15.16 14.62 14.81
5931 NASDAQ NATR Tue, Oct 28, 2014 14.10 15.08 14.18 15.07
5930 NASDAQ NATR Mon, Oct 27, 2014 13.78 14.07 13.68 13.98
5929 NASDAQ NATR Fri, Oct 24, 2014 13.66 13.90 13.66 13.75
5928 NASDAQ NATR Thu, Oct 23, 2014 13.62 13.69 13.41 13.60
5927 NASDAQ NATR Wed, Oct 22, 2014 13.66 13.76 13.40 13.47
5926 NASDAQ NATR Tue, Oct 21, 2014 13.59 14.25 13.56 13.60
5925 NASDAQ NATR Mon, Oct 20, 2014 13.57 13.73 13.41 13.50
5924 NASDAQ NATR Fri, Oct 17, 2014 14.02 14.02 13.68 13.73
5923 NASDAQ NATR Thu, Oct 16, 2014 14.40 14.71 13.75 13.80
5922 NASDAQ NATR Wed, Oct 15, 2014 14.52 14.83 14.52 14.53
5921 NASDAQ NATR Tue, Oct 14, 2014 14.75 14.89 14.54 14.66
5920 NASDAQ NATR Mon, Oct 13, 2014 14.57 14.91 14.56 14.59
5919 NASDAQ NATR Fri, Oct 10, 2014 14.51 15.00 14.51 14.65
5918 NASDAQ NATR Thu, Oct 9, 2014 14.97 15.09 14.60 14.62
5917 NASDAQ NATR Wed, Oct 8, 2014 14.90 15.14 14.85 14.99
5916 NASDAQ NATR Tue, Oct 7, 2014 15.29 15.34 14.98 14.99
5915 NASDAQ NATR Mon, Oct 6, 2014 15.28 15.51 15.27 15.34
5914 NASDAQ NATR Fri, Oct 3, 2014 15.63 15.76 15.30 15.31
5913 NASDAQ NATR Thu, Oct 2, 2014 15.18 15.74 15.18 15.40
5912 NASDAQ NATR Wed, Oct 1, 2014 14.89 15.33 14.55 15.16
5911 NASDAQ NATR Tue, Sep 30, 2014 15.54 15.59 14.83 14.83
5910 NASDAQ NATR Mon, Sep 29, 2014 15.41 15.68 15.40 15.65
5909 NASDAQ NATR Fri, Sep 26, 2014 15.56 15.81 15.46 15.51
5908 NASDAQ NATR Thu, Sep 25, 2014 15.74 15.96 15.50 15.53
5907 NASDAQ NATR Wed, Sep 24, 2014 15.39 15.88 15.21 15.76
5906 NASDAQ NATR Tue, Sep 23, 2014 15.53 15.92 15.31 15.40
5905 NASDAQ NATR Mon, Sep 22, 2014 14.85 15.96 14.76 15.58
5904 NASDAQ NATR Fri, Sep 19, 2014 15.30 15.30 14.84 15.00
5903 NASDAQ NATR Thu, Sep 18, 2014 15.19 15.57 15.09 15.28
5902 NASDAQ NATR Wed, Sep 17, 2014 15.06 15.49 14.80 15.09
5901 NASDAQ NATR Tue, Sep 16, 2014 14.30 15.13 14.30 15.00
5900 NASDAQ NATR Mon, Sep 15, 2014 14.32 14.65 14.12 14.29
5899 NASDAQ NATR Fri, Sep 12, 2014 14.52 14.68 14.19 14.33
5898 NASDAQ NATR Thu, Sep 11, 2014 14.41 14.81 14.31 14.71
5897 NASDAQ NATR Wed, Sep 10, 2014 14.73 14.73 14.13 14.53
5896 NASDAQ NATR Tue, Sep 9, 2014 14.92 14.95 14.54 14.68
5895 NASDAQ NATR Mon, Sep 8, 2014 15.47 15.47 14.97 15.01
5894 NASDAQ NATR Fri, Sep 5, 2014 15.15 15.67 15.10 15.57
5893 NASDAQ NATR Thu, Sep 4, 2014 15.05 15.34 14.76 15.14
5892 NASDAQ NATR Wed, Sep 3, 2014 16.20 16.80 16.20 16.47
5891 NASDAQ NATR Tue, Sep 2, 2014 16.50 16.69 15.65 16.11
5890 NASDAQ NATR Fri, Aug 29, 2014 16.55 16.55 16.40 16.45
5889 NASDAQ NATR Thu, Aug 28, 2014 16.50 16.78 16.36 16.54
5888 NASDAQ NATR Wed, Aug 27, 2014 16.79 16.94 16.42 16.52
5887 NASDAQ NATR Tue, Aug 26, 2014 16.73 16.93 16.70 16.78
5886 NASDAQ NATR Mon, Aug 25, 2014 16.35 16.89 16.30 16.63
5885 NASDAQ NATR Fri, Aug 22, 2014 16.43 16.55 16.16 16.31
5884 NASDAQ NATR Thu, Aug 21, 2014 16.20 16.60 16.01 16.41
5883 NASDAQ NATR Wed, Aug 20, 2014 16.01 16.44 15.83 16.34
5882 NASDAQ NATR Tue, Aug 19, 2014 15.54 16.15 15.54 16.02
5881 NASDAQ NATR Mon, Aug 18, 2014 16.10 16.17 15.36 15.64
5880 NASDAQ NATR Fri, Aug 15, 2014 16.06 16.06 15.60 16.02
5879 NASDAQ NATR Thu, Aug 14, 2014 15.66 15.94 15.63 15.87
5878 NASDAQ NATR Wed, Aug 13, 2014 15.74 15.82 15.66 15.76
5877 NASDAQ NATR Tue, Aug 12, 2014 15.79 15.96 15.72 15.76
5876 NASDAQ NATR Mon, Aug 11, 2014 15.90 15.90 15.70 15.88
5875 NASDAQ NATR Fri, Aug 8, 2014 15.59 16.04 15.59 15.85
5874 NASDAQ NATR Thu, Aug 7, 2014 15.31 15.75 15.31 15.62
5873 NASDAQ NATR Wed, Aug 6, 2014 15.37 15.48 14.99 15.39
5872 NASDAQ NATR Tue, Aug 5, 2014 15.29 15.48 14.30 15.37
5871 NASDAQ NATR Mon, Aug 4, 2014 15.62 15.62 15.11 15.28
5870 NASDAQ NATR Fri, Aug 1, 2014 15.38 15.75 15.25 15.63
5869 NASDAQ NATR Thu, Jul 31, 2014 15.80 15.80 15.40 15.44
5868 NASDAQ NATR Wed, Jul 30, 2014 16.08 16.14 15.76 15.78
5867 NASDAQ NATR Tue, Jul 29, 2014 16.07 16.22 15.75 15.96
5866 NASDAQ NATR Mon, Jul 28, 2014 16.11 16.28 15.94 15.97
5865 NASDAQ NATR Fri, Jul 25, 2014 15.89 16.01 15.71 16.01
5864 NASDAQ NATR Thu, Jul 24, 2014 16.10 16.20 15.84 16.00
5863 NASDAQ NATR Wed, Jul 23, 2014 16.17 16.20 16.08 16.12
5862 NASDAQ NATR Tue, Jul 22, 2014 16.15 16.19 15.89 16.05
5861 NASDAQ NATR Mon, Jul 21, 2014 15.99 16.09 15.54 15.99
5860 NASDAQ NATR Fri, Jul 18, 2014 16.04 16.29 15.89 16.19
5859 NASDAQ NATR Thu, Jul 17, 2014 15.70 16.28 15.70 16.12
5858 NASDAQ NATR Wed, Jul 16, 2014 16.35 16.44 15.68 15.73
5857 NASDAQ NATR Tue, Jul 15, 2014 16.35 16.61 16.19 16.30
5856 NASDAQ NATR Mon, Jul 14, 2014 16.33 16.40 16.19 16.31
5855 NASDAQ NATR Fri, Jul 11, 2014 16.23 16.38 16.08 16.34
5854 NASDAQ NATR Thu, Jul 10, 2014 16.47 16.47 16.07 16.30
5853 NASDAQ NATR Wed, Jul 9, 2014 16.81 16.94 16.43 16.75
5852 NASDAQ NATR Tue, Jul 8, 2014 16.89 16.89 16.63 16.72
5851 NASDAQ NATR Mon, Jul 7, 2014 17.20 17.20 16.85 16.88
5850 NASDAQ NATR Thu, Jul 3, 2014 17.29 17.35 17.11 17.22
5849 NASDAQ NATR Wed, Jul 2, 2014 17.27 17.27 17.05 17.10
5848 NASDAQ NATR Tue, Jul 1, 2014 16.96 17.23 16.96 17.16
5847 NASDAQ NATR Mon, Jun 30, 2014 17.00 17.28 16.40 16.97
5846 NASDAQ NATR Fri, Jun 27, 2014 16.65 17.25 16.14 16.97
5845 NASDAQ NATR Thu, Jun 26, 2014 16.60 18.37 16.08 16.71
5844 NASDAQ NATR Wed, Jun 25, 2014 15.96 15.96 15.57 15.67
5843 NASDAQ NATR Tue, Jun 24, 2014 15.96 16.16 15.81 16.06
5842 NASDAQ NATR Mon, Jun 23, 2014 16.24 16.29 15.81 15.98
5841 NASDAQ NATR Fri, Jun 20, 2014 16.04 16.33 15.94 16.27
5840 NASDAQ NATR Thu, Jun 19, 2014 15.79 15.99 15.61 15.94
5839 NASDAQ NATR Wed, Jun 18, 2014 15.36 15.89 15.14 15.67
5838 NASDAQ NATR Tue, Jun 17, 2014 15.42 15.66 15.28 15.36
5837 NASDAQ NATR Mon, Jun 16, 2014 15.49 15.75 15.07 15.36
5836 NASDAQ NATR Fri, Jun 13, 2014 15.36 15.61 15.15 15.55
5835 NASDAQ NATR Thu, Jun 12, 2014 15.41 15.37 15.02 15.35
5834 NASDAQ NATR Wed, Jun 11, 2014 15.35 15.75 14.95 15.39
5833 NASDAQ NATR Tue, Jun 10, 2014 14.96 15.56 14.96 15.47
5832 NASDAQ NATR Mon, Jun 9, 2014 14.45 15.00 14.32 14.95
5831 NASDAQ NATR Fri, Jun 6, 2014 14.20 14.46 13.80 14.34
5830 NASDAQ NATR Thu, Jun 5, 2014 14.07 14.20 13.90 14.13
5829 NASDAQ NATR Wed, Jun 4, 2014 13.96 14.27 13.93 14.03
5828 NASDAQ NATR Tue, Jun 3, 2014 14.46 14.54 13.94 14.02
5827 NASDAQ NATR Mon, Jun 2, 2014 14.88 15.01 14.36 14.44
5826 NASDAQ NATR Fri, May 30, 2014 14.84 15.26 14.69 14.73
5825 NASDAQ NATR Thu, May 29, 2014 14.35 15.12 14.35 14.84
5824 NASDAQ NATR Wed, May 28, 2014 14.14 14.47 14.05 14.36
5823 NASDAQ NATR Tue, May 27, 2014 13.96 14.27 13.81 14.24
5822 NASDAQ NATR Fri, May 23, 2014 13.92 14.03 13.78 13.86
5821 NASDAQ NATR Thu, May 22, 2014 14.01 14.10 13.61 14.00
5820 NASDAQ NATR Wed, May 21, 2014 13.80 14.08 13.66 13.90
5819 NASDAQ NATR Tue, May 20, 2014 14.03 14.04 13.66 13.79
5818 NASDAQ NATR Mon, May 19, 2014 13.44 14.05 13.44 13.88
5817 NASDAQ NATR Fri, May 16, 2014 13.30 13.77 13.11 13.49
5816 NASDAQ NATR Thu, May 15, 2014 13.14 13.51 13.05 13.33
5815 NASDAQ NATR Wed, May 14, 2014 14.07 14.27 13.23 13.27
5814 NASDAQ NATR Tue, May 13, 2014 13.98 14.30 13.86 14.13
5813 NASDAQ NATR Mon, May 12, 2014 13.89 14.08 13.79 13.97
5812 NASDAQ NATR Fri, May 9, 2014 13.69 14.09 13.60 13.79
5811 NASDAQ NATR Thu, May 8, 2014 13.51 14.32 13.51 13.78
5810 NASDAQ NATR Wed, May 7, 2014 13.33 14.04 13.02 13.41
5809 NASDAQ NATR Tue, May 6, 2014 13.34 13.75 13.19 13.30
5808 NASDAQ NATR Mon, May 5, 2014 13.30 13.59 13.18 13.46
5807 NASDAQ NATR Fri, May 2, 2014 13.60 13.75 13.25 13.43
5806 NASDAQ NATR Thu, May 1, 2014 13.29 13.59 13.07 13.59
5805 NASDAQ NATR Wed, Apr 30, 2014 13.58 13.66 13.25 13.40
5804 NASDAQ NATR Tue, Apr 29, 2014 14.00 14.00 13.56 13.58
5803 NASDAQ NATR Mon, Apr 28, 2014 13.60 13.99 13.55 13.92
5802 NASDAQ NATR Fri, Apr 25, 2014 13.84 13.90 13.57 13.62
5801 NASDAQ NATR Thu, Apr 24, 2014 14.00 14.14 13.53 13.95
5800 NASDAQ NATR Wed, Apr 23, 2014 13.99 14.30 13.77 13.96
5799 NASDAQ NATR Tue, Apr 22, 2014 13.87 14.12 13.83 14.12
5798 NASDAQ NATR Mon, Apr 21, 2014 13.99 14.04 13.63 13.86
5797 NASDAQ NATR Thu, Apr 17, 2014 13.56 14.38 13.32 14.05
5796 NASDAQ NATR Wed, Apr 16, 2014 13.49 13.80 13.49 13.67
5795 NASDAQ NATR Tue, Apr 15, 2014 13.40 13.65 13.15 13.34
5794 NASDAQ NATR Mon, Apr 14, 2014 13.43 13.76 13.04 13.31
5793 NASDAQ NATR Fri, Apr 11, 2014 12.92 13.42 12.92 13.25
5792 NASDAQ NATR Thu, Apr 10, 2014 13.50 13.74 12.91 13.05
5791 NASDAQ NATR Wed, Apr 9, 2014 13.69 13.80 13.33 13.48
5790 NASDAQ NATR Tue, Apr 8, 2014 13.36 14.28 13.36 13.60
5789 NASDAQ NATR Mon, Apr 7, 2014 13.45 13.83 13.27 13.29
5788 NASDAQ NATR Fri, Apr 4, 2014 13.99 14.12 13.50 13.57
5787 NASDAQ NATR Thu, Apr 3, 2014 13.89 14.05 13.73 13.84
5786 NASDAQ NATR Wed, Apr 2, 2014 13.78 14.09 13.68 13.94
5785 NASDAQ NATR Tue, Apr 1, 2014 13.85 13.91 13.67 13.68
5784 NASDAQ NATR Mon, Mar 31, 2014 13.80 14.06 13.76 13.78
5783 NASDAQ NATR Fri, Mar 28, 2014 13.96 14.07 13.81 13.92
5782 NASDAQ NATR Thu, Mar 27, 2014 14.13 14.13 13.88 14.00
5781 NASDAQ NATR Wed, Mar 26, 2014 14.13 14.15 13.90 13.90
5780 NASDAQ NATR Tue, Mar 25, 2014 13.86 14.10 13.86 14.08
5779 NASDAQ NATR Mon, Mar 24, 2014 13.60 13.85 13.33 13.75
5778 NASDAQ NATR Fri, Mar 21, 2014 14.07 14.12 13.51 13.60
5777 NASDAQ NATR Thu, Mar 20, 2014 13.92 14.11 13.85 14.06
5776 NASDAQ NATR Wed, Mar 19, 2014 14.02 14.21 13.73 14.00
5775 NASDAQ NATR Tue, Mar 18, 2014 13.61 14.23 13.59 14.03
5774 NASDAQ NATR Mon, Mar 17, 2014 15.66 15.82 15.01 15.26
5773 NASDAQ NATR Fri, Mar 14, 2014 15.57 15.73 15.12 15.73
5772 NASDAQ NATR Thu, Mar 13, 2014 15.66 15.72 15.50 15.51
5771 NASDAQ NATR Wed, Mar 12, 2014 15.50 16.00 15.50 15.53
5770 NASDAQ NATR Tue, Mar 11, 2014 15.93 15.75 15.50 15.52
5769 NASDAQ NATR Mon, Mar 10, 2014 15.63 16.00 15.58 15.96
5768 NASDAQ NATR Fri, Mar 7, 2014 15.98 15.98 15.50 15.62
5767 NASDAQ NATR Thu, Mar 6, 2014 15.91 15.91 15.50 15.82
5766 NASDAQ NATR Wed, Mar 5, 2014 15.81 15.99 15.53 15.77
5765 NASDAQ NATR Tue, Mar 4, 2014 15.41 16.00 15.20 15.92
5764 NASDAQ NATR Mon, Mar 3, 2014 15.05 15.24 14.79 15.18
5763 NASDAQ NATR Fri, Feb 28, 2014 15.65 15.72 15.11 15.11
5762 NASDAQ NATR Thu, Feb 27, 2014 15.65 15.65 15.50 15.59
5761 NASDAQ NATR Wed, Feb 26, 2014 15.67 15.76 15.46 15.65
5760 NASDAQ NATR Tue, Feb 25, 2014 15.55 15.66 15.55 15.56
5759 NASDAQ NATR Mon, Feb 24, 2014 15.75 15.76 15.51 15.59
5758 NASDAQ NATR Fri, Feb 21, 2014 15.64 16.18 15.45 15.67
5757 NASDAQ NATR Thu, Feb 20, 2014 15.16 15.54 15.09 15.53
5756 NASDAQ NATR Wed, Feb 19, 2014 15.73 15.62 15.06 15.09
5755 NASDAQ NATR Tue, Feb 18, 2014 15.00 15.92 14.68 15.84
5754 NASDAQ NATR Fri, Feb 14, 2014 15.38 15.46 15.17 15.33
5753 NASDAQ NATR Thu, Feb 13, 2014 15.14 15.46 15.14 15.38
5752 NASDAQ NATR Wed, Feb 12, 2014 15.33 15.37 15.17 15.32
5751 NASDAQ NATR Tue, Feb 11, 2014 15.36 15.48 15.16 15.38
5750 NASDAQ NATR Mon, Feb 10, 2014 15.08 15.29 14.94 15.28
5749 NASDAQ NATR Fri, Feb 7, 2014 15.21 15.21 14.99 15.16
5748 NASDAQ NATR Thu, Feb 6, 2014 15.31 15.33 15.20 15.22
5747 NASDAQ NATR Wed, Feb 5, 2014 14.83 15.59 14.83 15.26
5746 NASDAQ NATR Tue, Feb 4, 2014 15.35 15.87 15.03 15.06
5745 NASDAQ NATR Mon, Feb 3, 2014 16.20 16.78 14.93 15.32
5744 NASDAQ NATR Fri, Jan 31, 2014 16.40 17.00 16.14 16.27
5743 NASDAQ NATR Thu, Jan 30, 2014 16.47 17.00 16.23 16.76
5742 NASDAQ NATR Wed, Jan 29, 2014 16.00 16.43 16.00 16.28
5741 NASDAQ NATR Tue, Jan 28, 2014 16.22 16.35 16.21 16.25
5740 NASDAQ NATR Mon, Jan 27, 2014 16.24 16.34 16.00 16.26
5739 NASDAQ NATR Fri, Jan 24, 2014 16.62 16.62 16.00 16.21
5738 NASDAQ NATR Thu, Jan 23, 2014 17.19 17.19 16.44 16.62
5737 NASDAQ NATR Wed, Jan 22, 2014 17.02 17.55 17.02 17.21
5736 NASDAQ NATR Tue, Jan 21, 2014 17.04 17.14 16.62 16.95
5735 NASDAQ NATR Fri, Jan 17, 2014 17.24 17.24 16.68 16.93
5734 NASDAQ NATR Thu, Jan 16, 2014 16.87 18.33 16.87 17.24
5733 NASDAQ NATR Wed, Jan 15, 2014 16.82 16.97 16.22 16.84
5732 NASDAQ NATR Tue, Jan 14, 2014 16.79 17.16 16.40 16.75
5731 NASDAQ NATR Mon, Jan 13, 2014 17.53 17.69 16.42 16.76
5730 NASDAQ NATR Fri, Jan 10, 2014 17.85 18.24 17.50 17.64
5729 NASDAQ NATR Thu, Jan 9, 2014 18.06 18.31 17.75 17.83
5728 NASDAQ NATR Wed, Jan 8, 2014 18.69 18.76 17.66 17.95
5727 NASDAQ NATR Tue, Jan 7, 2014 18.46 18.81 18.34 18.63
5726 NASDAQ NATR Mon, Jan 6, 2014 18.27 18.48 18.19 18.34
5725 NASDAQ NATR Fri, Jan 3, 2014 18.18 18.29 17.89 18.24
5724 NASDAQ NATR Thu, Jan 2, 2014 17.36 18.47 17.36 18.16
5723 NASDAQ NATR Tue, Dec 31, 2013 17.36 17.56 16.41 17.32
5722 NASDAQ NATR Mon, Dec 30, 2013 17.51 17.71 17.30 17.32
5721 NASDAQ NATR Fri, Dec 27, 2013 17.68 17.83 17.33 17.51
5720 NASDAQ NATR Thu, Dec 26, 2013 17.49 17.64 17.47 17.60
5719 NASDAQ NATR Tue, Dec 24, 2013 17.29 17.50 17.12 17.41
5718 NASDAQ NATR Mon, Dec 23, 2013 17.10 17.38 16.90 17.28
5717 NASDAQ NATR Fri, Dec 20, 2013 17.47 17.64 17.00 17.07
5716 NASDAQ NATR Thu, Dec 19, 2013 17.53 17.94 17.36 17.38
5715 NASDAQ NATR Wed, Dec 18, 2013 17.25 17.64 17.14 17.61
5714 NASDAQ NATR Tue, Dec 17, 2013 17.29 18.04 17.01 17.28
5713 NASDAQ NATR Mon, Dec 16, 2013 17.25 17.41 16.87 17.24
5712 NASDAQ NATR Fri, Dec 13, 2013 17.04 17.21 16.97 17.17
5711 NASDAQ NATR Thu, Dec 12, 2013 17.90 17.90 16.88 16.95
5710 NASDAQ NATR Wed, Dec 11, 2013 18.09 18.09 17.55 17.97
5709 NASDAQ NATR Tue, Dec 10, 2013 18.27 18.34 17.89 18.06
5708 NASDAQ NATR Mon, Dec 9, 2013 18.95 18.95 18.20 18.26
5707 NASDAQ NATR Fri, Dec 6, 2013 19.06 19.17 18.82 18.95
5706 NASDAQ NATR Thu, Dec 5, 2013 18.79 18.91 18.16 18.80
5705 NASDAQ NATR Wed, Dec 4, 2013 18.90 19.33 18.67 18.85
5704 NASDAQ NATR Tue, Dec 3, 2013 18.44 19.18 18.10 19.02
5703 NASDAQ NATR Mon, Dec 2, 2013 19.21 19.21 18.44 18.44
5702 NASDAQ NATR Fri, Nov 29, 2013 19.50 19.56 19.01 19.19
5701 NASDAQ NATR Wed, Nov 27, 2013 19.71 19.71 19.05 19.49
5700 NASDAQ NATR Tue, Nov 26, 2013 19.32 19.83 19.09 19.76
5699 NASDAQ NATR Mon, Nov 25, 2013 18.93 19.42 18.66 19.34
5698 NASDAQ NATR Fri, Nov 22, 2013 18.56 18.98 18.15 18.88
5697 NASDAQ NATR Thu, Nov 21, 2013 18.26 18.69 18.25 18.62
5696 NASDAQ NATR Wed, Nov 20, 2013 18.14 18.24 17.95 18.14
5695 NASDAQ NATR Tue, Nov 19, 2013 17.99 18.11 17.85 18.11
5694 NASDAQ NATR Mon, Nov 18, 2013 18.12 18.39 17.90 17.93
5693 NASDAQ NATR Fri, Nov 15, 2013 17.96 18.23 17.90 18.04
5692 NASDAQ NATR Thu, Nov 14, 2013 18.14 18.46 17.91 17.99
5691 NASDAQ NATR Wed, Nov 13, 2013 17.92 18.36 17.90 18.31
5690 NASDAQ NATR Tue, Nov 12, 2013 18.03 18.15 17.91 18.07
5689 NASDAQ NATR Mon, Nov 11, 2013 18.05 18.25 17.88 18.10
5688 NASDAQ NATR Fri, Nov 8, 2013 18.01 18.15 17.90 18.00
5687 NASDAQ NATR Thu, Nov 7, 2013 19.19 19.19 17.70 17.90
5686 NASDAQ NATR Wed, Nov 6, 2013 18.70 19.79 18.60 19.46
5685 NASDAQ NATR Tue, Nov 5, 2013 18.27 18.73 17.51 18.64
5684 NASDAQ NATR Mon, Nov 4, 2013 18.27 18.66 17.51 18.30
5683 NASDAQ NATR Fri, Nov 1, 2013 18.84 18.84 18.00 18.20
5682 NASDAQ NATR Thu, Oct 31, 2013 18.77 19.24 18.77 18.89
5681 NASDAQ NATR Wed, Oct 30, 2013 19.75 19.92 18.66 18.82
5680 NASDAQ NATR Tue, Oct 29, 2013 19.46 19.80 19.46 19.80
5679 NASDAQ NATR Mon, Oct 28, 2013 19.45 19.59 19.36 19.46
5678 NASDAQ NATR Fri, Oct 25, 2013 19.26 19.28 19.13 19.28
5677 NASDAQ NATR Thu, Oct 24, 2013 18.59 19.38 18.91 19.18
5676 NASDAQ NATR Wed, Oct 23, 2013 18.67 18.96 18.66 18.86
5675 NASDAQ NATR Tue, Oct 22, 2013 18.91 19.09 18.54 18.76
5674 NASDAQ NATR Mon, Oct 21, 2013 18.96 18.95 18.70 18.78
5673 NASDAQ NATR Fri, Oct 18, 2013 19.33 19.33 18.77 18.96
5672 NASDAQ NATR Thu, Oct 17, 2013 18.84 19.24 18.84 19.11
5671 NASDAQ NATR Wed, Oct 16, 2013 19.09 19.25 18.82 18.86
5670 NASDAQ NATR Tue, Oct 15, 2013 19.22 19.30 18.85 18.96
5669 NASDAQ NATR Mon, Oct 14, 2013 18.97 19.25 18.31 19.22
5668 NASDAQ NATR Fri, Oct 11, 2013 19.18 19.25 18.78 19.02
5667 NASDAQ NATR Thu, Oct 10, 2013 18.54 19.19 18.54 19.13
5666 NASDAQ NATR Wed, Oct 9, 2013 18.17 18.57 18.13 18.25
5665 NASDAQ NATR Tue, Oct 8, 2013 18.33 18.20 18.00 18.09
5664 NASDAQ NATR Mon, Oct 7, 2013 18.60 18.66 18.22 18.32
5663 NASDAQ NATR Fri, Oct 4, 2013 18.57 18.93 18.57 18.85
5662 NASDAQ NATR Thu, Oct 3, 2013 19.00 19.01 18.52 18.70
5661 NASDAQ NATR Wed, Oct 2, 2013 19.28 19.30 19.05 19.05
5660 NASDAQ NATR Tue, Oct 1, 2013 19.01 19.43 19.01 19.37
5659 NASDAQ NATR Mon, Sep 30, 2013 19.05 19.17 19.00 19.01
5658 NASDAQ NATR Fri, Sep 27, 2013 19.24 19.40 19.19 19.20
5657 NASDAQ NATR Thu, Sep 26, 2013 19.20 19.34 19.05 19.25
5656 NASDAQ NATR Wed, Sep 25, 2013 19.50 19.58 19.07 19.10
5655 NASDAQ NATR Tue, Sep 24, 2013 19.38 19.60 19.37 19.45
5654 NASDAQ NATR Mon, Sep 23, 2013 19.42 19.50 19.24 19.38
5653 NASDAQ NATR Fri, Sep 20, 2013 19.47 19.55 19.20 19.39
5652 NASDAQ NATR Thu, Sep 19, 2013 19.66 19.74 19.21 19.45
5651 NASDAQ NATR Wed, Sep 18, 2013 19.30 19.86 19.12 19.67
5650 NASDAQ NATR Tue, Sep 17, 2013 19.24 19.52 19.15 19.29
5649 NASDAQ NATR Mon, Sep 16, 2013 19.04 19.46 18.82 19.20
5648 NASDAQ NATR Fri, Sep 13, 2013 18.90 18.92 18.42 18.84
5647 NASDAQ NATR Thu, Sep 12, 2013 18.76 19.38 18.76 18.87
5646 NASDAQ NATR Wed, Sep 11, 2013 18.58 18.83 18.41 18.78
5645 NASDAQ NATR Tue, Sep 10, 2013 18.55 18.77 18.18 18.64
5644 NASDAQ NATR Mon, Sep 9, 2013 17.73 18.65 17.73 18.48
5643 NASDAQ NATR Fri, Sep 6, 2013 18.00 18.00 17.71 17.77
5642 NASDAQ NATR Thu, Sep 5, 2013 17.88 18.00 17.70 17.98
5641 NASDAQ NATR Wed, Sep 4, 2013 17.96 18.00 17.76 17.83
5640 NASDAQ NATR Tue, Sep 3, 2013 17.50 18.00 17.44 17.97
5639 NASDAQ NATR Fri, Aug 30, 2013 17.42 17.65 17.00 17.46
5638 NASDAQ NATR Thu, Aug 29, 2013 17.68 17.75 17.42 17.45
5637 NASDAQ NATR Wed, Aug 28, 2013 17.81 17.81 17.44 17.68
5636 NASDAQ NATR Tue, Aug 27, 2013 17.84 17.96 17.62 17.75
5635 NASDAQ NATR Mon, Aug 26, 2013 18.00 18.10 17.86 17.99
5634 NASDAQ NATR Fri, Aug 23, 2013 18.23 18.23 17.80 17.97
5633 NASDAQ NATR Thu, Aug 22, 2013 18.25 18.36 18.06 18.28
5632 NASDAQ NATR Wed, Aug 21, 2013 18.06 18.39 18.06 18.13
5631 NASDAQ NATR Tue, Aug 20, 2013 18.01 18.40 18.01 18.15
5630 NASDAQ NATR Mon, Aug 19, 2013 17.66 18.62 17.30 18.18
5629 NASDAQ NATR Fri, Aug 16, 2013 17.56 18.43 17.56 17.65
5628 NASDAQ NATR Thu, Aug 15, 2013 17.60 18.09 17.21 17.66
5627 NASDAQ NATR Wed, Aug 14, 2013 19.39 19.65 19.05 19.11
5626 NASDAQ NATR Tue, Aug 13, 2013 19.82 19.94 19.25 19.45
5625 NASDAQ NATR Mon, Aug 12, 2013 18.68 20.15 18.68 20.06
5624 NASDAQ NATR Fri, Aug 9, 2013 18.55 18.81 18.45 18.71
5623 NASDAQ NATR Thu, Aug 8, 2013 18.55 18.64 18.13 18.21
5622 NASDAQ NATR Wed, Aug 7, 2013 18.53 18.74 18.19 18.40
5621 NASDAQ NATR Tue, Aug 6, 2013 18.69 18.72 18.16 18.61
5620 NASDAQ NATR Mon, Aug 5, 2013 18.20 18.88 17.96 18.77
5619 NASDAQ NATR Fri, Aug 2, 2013 18.05 18.25 17.77 17.96
5618 NASDAQ NATR Thu, Aug 1, 2013 18.20 18.79 17.78 18.02
5617 NASDAQ NATR Wed, Jul 31, 2013 18.68 18.73 18.07 18.20
5616 NASDAQ NATR Tue, Jul 30, 2013 18.67 18.68 18.33 18.46
5615 NASDAQ NATR Mon, Jul 29, 2013 18.94 18.94 18.41 18.53
5614 NASDAQ NATR Fri, Jul 26, 2013 19.14 19.14 18.74 18.93
5613 NASDAQ NATR Thu, Jul 25, 2013 18.25 19.50 18.25 19.34
5612 NASDAQ NATR Wed, Jul 24, 2013 18.86 19.03 17.83 18.35
5611 NASDAQ NATR Tue, Jul 23, 2013 18.69 19.11 18.58 18.81
5610 NASDAQ NATR Mon, Jul 22, 2013 18.55 18.98 18.37 18.55
5609 NASDAQ NATR Fri, Jul 19, 2013 18.51 18.66 18.41 18.66
5608 NASDAQ NATR Thu, Jul 18, 2013 18.15 18.70 18.19 18.59
5607 NASDAQ NATR Wed, Jul 17, 2013 18.36 18.36 18.06 18.15
5606 NASDAQ NATR Tue, Jul 16, 2013 17.74 18.66 17.74 18.20
5605 NASDAQ NATR Mon, Jul 15, 2013 17.86 17.94 17.42 17.75
5604 NASDAQ NATR Fri, Jul 12, 2013 18.12 18.23 17.39 17.80
5603 NASDAQ NATR Thu, Jul 11, 2013 18.50 18.50 18.10 18.20
5602 NASDAQ NATR Wed, Jul 10, 2013 18.18 18.76 18.11 18.38
5601 NASDAQ NATR Tue, Jul 9, 2013 18.41 18.71 17.98 18.25
5600 NASDAQ NATR Mon, Jul 8, 2013 17.38 18.50 17.38 18.45
5599 NASDAQ NATR Fri, Jul 5, 2013 17.65 17.65 17.13 17.38
5598 NASDAQ NATR Wed, Jul 3, 2013 17.05 17.55 17.05 17.37
5597 NASDAQ NATR Tue, Jul 2, 2013 16.97 17.35 16.60 17.09
5596 NASDAQ NATR Mon, Jul 1, 2013 16.58 17.19 16.40 16.90
5595 NASDAQ NATR Fri, Jun 28, 2013 16.00 16.43 15.86 16.35
5594 NASDAQ NATR Thu, Jun 27, 2013 16.05 16.13 15.87 15.99
5593 NASDAQ NATR Wed, Jun 26, 2013 16.19 16.16 15.89 15.90
5592 NASDAQ NATR Tue, Jun 25, 2013 16.47 16.47 15.79 16.07
5591 NASDAQ NATR Mon, Jun 24, 2013 16.10 16.49 15.72 16.27
5590 NASDAQ NATR Fri, Jun 21, 2013 16.14 16.34 15.70 16.31
5589 NASDAQ NATR Thu, Jun 20, 2013 16.16 16.55 15.96 16.08
5588 NASDAQ NATR Wed, Jun 19, 2013 17.00 17.00 16.37 16.39
5587 NASDAQ NATR Tue, Jun 18, 2013 16.82 17.10 16.82 16.99
5586 NASDAQ NATR Mon, Jun 17, 2013 16.82 17.00 16.62 16.73
5585 NASDAQ NATR Fri, Jun 14, 2013 17.39 17.39 16.60 16.61
5584 NASDAQ NATR Thu, Jun 13, 2013 16.60 17.45 16.41 17.25
5583 NASDAQ NATR Wed, Jun 12, 2013 16.40 17.41 16.40 16.56
5582 NASDAQ NATR Tue, Jun 11, 2013 15.70 16.35 15.59 16.23
5581 NASDAQ NATR Mon, Jun 10, 2013 15.97 15.97 15.58 15.84
5580 NASDAQ NATR Fri, Jun 7, 2013 15.78 15.87 15.40 15.85
5579 NASDAQ NATR Thu, Jun 6, 2013 15.67 15.67 15.38 15.63
5578 NASDAQ NATR Wed, Jun 5, 2013 15.51 15.92 15.40 15.62
5577 NASDAQ NATR Tue, Jun 4, 2013 15.72 15.88 15.40 15.48
5576 NASDAQ NATR Mon, Jun 3, 2013 15.48 16.01 15.39 15.65
5575 NASDAQ NATR Fri, May 31, 2013 15.33 15.62 15.33 15.40
5574 NASDAQ NATR Thu, May 30, 2013 15.44 15.66 15.40 15.52
5573 NASDAQ NATR Wed, May 29, 2013 15.87 16.00 15.39 15.40
5572 NASDAQ NATR Tue, May 28, 2013 15.55 16.00 15.49 15.97
5571 NASDAQ NATR Fri, May 24, 2013 15.40 15.54 15.40 15.52
5570 NASDAQ NATR Thu, May 23, 2013 15.30 15.69 15.30 15.44
5569 NASDAQ NATR Wed, May 22, 2013 15.60 15.69 15.33 15.39
5568 NASDAQ NATR Tue, May 21, 2013 15.94 15.95 15.51 15.63
5567 NASDAQ NATR Mon, May 20, 2013 15.30 16.00 15.00 15.99
5566 NASDAQ NATR Fri, May 17, 2013 15.20 15.39 15.10 15.31
5565 NASDAQ NATR Thu, May 16, 2013 14.73 15.24 14.70 15.12
5564 NASDAQ NATR Wed, May 15, 2013 14.93 15.00 14.65 14.83
5563 NASDAQ NATR Tue, May 14, 2013 15.17 15.29 14.83 14.93
5562 NASDAQ NATR Mon, May 13, 2013 15.53 15.53 14.83 14.88
5561 NASDAQ NATR Fri, May 10, 2013 15.80 15.80 15.38 15.53
5560 NASDAQ NATR Thu, May 9, 2013 15.60 15.77 15.43 15.73
5559 NASDAQ NATR Wed, May 8, 2013 14.91 15.72 14.91 15.63
5558 NASDAQ NATR Tue, May 7, 2013 14.71 14.89 14.38 14.86
5557 NASDAQ NATR Mon, May 6, 2013 14.48 14.88 14.44 14.63
5556 NASDAQ NATR Fri, May 3, 2013 14.35 14.50 13.96 14.44
5555 NASDAQ NATR Thu, May 2, 2013 13.79 14.29 13.79 14.18
5554 NASDAQ NATR Wed, May 1, 2013 14.64 14.64 13.60 13.64
5553 NASDAQ NATR Tue, Apr 30, 2013 14.59 14.74 14.45 14.63
5552 NASDAQ NATR Mon, Apr 29, 2013 14.32 14.69 14.27 14.55
5551 NASDAQ NATR Fri, Apr 26, 2013 14.70 14.70 14.26 14.30
5550 NASDAQ NATR Thu, Apr 25, 2013 14.84 14.86 14.61 14.74
5549 NASDAQ NATR Wed, Apr 24, 2013 14.58 14.79 14.44 14.75
5548 NASDAQ NATR Tue, Apr 23, 2013 14.54 14.84 14.22 14.72
5547 NASDAQ NATR Mon, Apr 22, 2013 14.57 14.81 14.26 14.39
5546 NASDAQ NATR Fri, Apr 19, 2013 14.23 14.53 14.06 14.49
5545 NASDAQ NATR Thu, Apr 18, 2013 14.35 14.71 14.13 14.23
5544 NASDAQ NATR Wed, Apr 17, 2013 14.66 15.36 14.01 14.31
5543 NASDAQ NATR Tue, Apr 16, 2013 14.18 14.87 14.18 14.74
5542 NASDAQ NATR Mon, Apr 15, 2013 14.91 15.06 13.99 14.09
5541 NASDAQ NATR Fri, Apr 12, 2013 15.30 15.30 14.81 14.96
5540 NASDAQ NATR Thu, Apr 11, 2013 15.49 15.72 15.39 15.42
5539 NASDAQ NATR Wed, Apr 10, 2013 14.99 15.50 14.83 15.46
5538 NASDAQ NATR Tue, Apr 9, 2013 15.21 15.21 14.90 14.90
5537 NASDAQ NATR Mon, Apr 8, 2013 15.16 15.41 15.10 15.23
5536 NASDAQ NATR Fri, Apr 5, 2013 15.34 15.50 15.22 15.27
5535 NASDAQ NATR Thu, Apr 4, 2013 15.48 15.62 15.35 15.62
5534 NASDAQ NATR Wed, Apr 3, 2013 15.90 15.90 15.38 15.59
5533 NASDAQ NATR Tue, Apr 2, 2013 15.87 16.28 15.73 15.87
5532 NASDAQ NATR Mon, Apr 1, 2013 15.17 15.79 15.10 15.72
5531 NASDAQ NATR Thu, Mar 28, 2013 15.40 15.40 15.15 15.24
5530 NASDAQ NATR Wed, Mar 27, 2013 15.17 15.39 15.17 15.36
5529 NASDAQ NATR Tue, Mar 26, 2013 15.33 15.40 15.16 15.32
5528 NASDAQ NATR Mon, Mar 25, 2013 15.40 15.40 15.08 15.20
5527 NASDAQ NATR Fri, Mar 22, 2013 15.29 15.49 15.21 15.45
5526 NASDAQ NATR Thu, Mar 21, 2013 15.36 15.50 15.08 15.36
5525 NASDAQ NATR Wed, Mar 20, 2013 15.23 15.75 15.23 15.46
5524 NASDAQ NATR Tue, Mar 19, 2013 15.59 15.62 14.77 15.03
5523 NASDAQ NATR Mon, Mar 18, 2013 15.61 15.75 15.50 15.51
5522 NASDAQ NATR Fri, Mar 15, 2013 14.75 15.75 14.61 15.74
5521 NASDAQ NATR Thu, Mar 14, 2013 15.35 15.35 14.35 14.44
5520 NASDAQ NATR Wed, Mar 13, 2013 15.55 15.55 14.93 15.40
5519 NASDAQ NATR Tue, Mar 12, 2013 15.48 15.96 15.45 15.58
5518 NASDAQ NATR Mon, Mar 11, 2013 14.21 15.57 14.01 15.56
5517 NASDAQ NATR Fri, Mar 8, 2013 14.02 14.24 13.90 14.21
5516 NASDAQ NATR Thu, Mar 7, 2013 14.63 14.63 13.30 13.89
5515 NASDAQ NATR Wed, Mar 6, 2013 14.96 14.96 14.59 14.72
5514 NASDAQ NATR Tue, Mar 5, 2013 14.80 15.00 14.76 14.98
5513 NASDAQ NATR Mon, Mar 4, 2013 14.44 14.89 14.39 14.71
5512 NASDAQ NATR Fri, Mar 1, 2013 14.31 14.76 14.31 14.43
5511 NASDAQ NATR Thu, Feb 28, 2013 14.30 14.61 14.27 14.46
5510 NASDAQ NATR Wed, Feb 27, 2013 14.39 14.40 14.25 14.28
5509 NASDAQ NATR Tue, Feb 26, 2013 14.37 14.79 14.29 14.41
5508 NASDAQ NATR Mon, Feb 25, 2013 14.59 15.03 14.30 14.53
5507 NASDAQ NATR Fri, Feb 22, 2013 14.40 14.41 14.14 14.41
5506 NASDAQ NATR Thu, Feb 21, 2013 14.57 14.80 14.26 14.31
5505 NASDAQ NATR Wed, Feb 20, 2013 14.93 14.93 14.52 14.58
5504 NASDAQ NATR Tue, Feb 19, 2013 14.97 14.99 14.74 14.93
5503 NASDAQ NATR Fri, Feb 15, 2013 15.00 15.15 14.89 14.97
5502 NASDAQ NATR Thu, Feb 14, 2013 14.88 14.90 14.72 14.89
5501 NASDAQ NATR Wed, Feb 13, 2013 14.86 14.88 14.66 14.78
5500 NASDAQ NATR Tue, Feb 12, 2013 15.01 15.06 14.71 14.81
5499 NASDAQ NATR Mon, Feb 11, 2013 15.00 15.12 14.85 14.95
5498 NASDAQ NATR Fri, Feb 8, 2013 14.80 15.01 14.79 15.00
5497 NASDAQ NATR Thu, Feb 7, 2013 15.04 15.12 14.71 14.72
5496 NASDAQ NATR Wed, Feb 6, 2013 15.05 15.10 14.79 15.01
5495 NASDAQ NATR Tue, Feb 5, 2013 14.74 15.21 14.68 14.99
5494 NASDAQ NATR Mon, Feb 4, 2013 14.71 14.98 14.41 14.46
5493 NASDAQ NATR Fri, Feb 1, 2013 14.46 14.95 14.42 14.75
5492 NASDAQ NATR Thu, Jan 31, 2013 14.29 14.51 14.29 14.42
5491 NASDAQ NATR Wed, Jan 30, 2013 14.66 14.67 14.25 14.29
5490 NASDAQ NATR Tue, Jan 29, 2013 14.71 14.79 14.50 14.64
5489 NASDAQ NATR Mon, Jan 28, 2013 14.59 14.75 14.51 14.68
5488 NASDAQ NATR Fri, Jan 25, 2013 14.41 14.70 14.20 14.46
5487 NASDAQ NATR Thu, Jan 24, 2013 14.58 14.58 14.00 14.32
5486 NASDAQ NATR Wed, Jan 23, 2013 14.86 14.92 14.21 14.56
5485 NASDAQ NATR Tue, Jan 22, 2013 14.95 15.05 14.61 14.83
5484 NASDAQ NATR Fri, Jan 18, 2013 14.71 15.05 14.45 14.97
5483 NASDAQ NATR Thu, Jan 17, 2013 14.93 14.93 14.67 14.75
5482 NASDAQ NATR Wed, Jan 16, 2013 15.01 15.01 14.66 14.78
5481 NASDAQ NATR Tue, Jan 15, 2013 14.75 15.09 14.75 15.06
5480 NASDAQ NATR Mon, Jan 14, 2013 14.88 15.07 14.35 14.77
5479 NASDAQ NATR Fri, Jan 11, 2013 14.98 15.06 14.86 14.86
5478 NASDAQ NATR Thu, Jan 10, 2013 15.03 15.18 14.53 14.93
5477 NASDAQ NATR Wed, Jan 9, 2013 14.79 15.24 14.79 14.92
5476 NASDAQ NATR Tue, Jan 8, 2013 14.99 15.15 14.60 14.78
5475 NASDAQ NATR Mon, Jan 7, 2013 15.27 15.27 14.95 15.05
5474 NASDAQ NATR Fri, Jan 4, 2013 15.40 15.71 15.00 15.41
5473 NASDAQ NATR Thu, Jan 3, 2013 14.96 15.77 14.90 15.29
5472 NASDAQ NATR Wed, Jan 2, 2013 14.50 15.01 14.31 14.97
5471 NASDAQ NATR Mon, Dec 31, 2012 14.16 14.50 14.15 14.48
5470 NASDAQ NATR Fri, Dec 28, 2012 13.69 14.40 13.69 14.00
5469 NASDAQ NATR Thu, Dec 27, 2012 13.11 13.86 13.11 13.81
5468 NASDAQ NATR Wed, Dec 26, 2012 14.23 14.38 12.91 13.02
5467 NASDAQ NATR Mon, Dec 24, 2012 14.32 14.39 13.76 14.23
5466 NASDAQ NATR Fri, Dec 21, 2012 15.15 15.15 14.25 14.41
5465 NASDAQ NATR Thu, Dec 20, 2012 15.42 15.42 15.00 15.11
5464 NASDAQ NATR Wed, Dec 19, 2012 15.38 15.50 15.00 15.36
5463 NASDAQ NATR Tue, Dec 18, 2012 15.33 15.45 15.28 15.44
5462 NASDAQ NATR Mon, Dec 17, 2012 15.20 15.43 15.07 15.18
5461 NASDAQ NATR Fri, Dec 14, 2012 15.06 15.11 15.04 15.11
5460 NASDAQ NATR Thu, Dec 13, 2012 15.42 15.42 15.05 15.07
5459 NASDAQ NATR Wed, Dec 12, 2012 15.50 15.70 15.32 15.35
5458 NASDAQ NATR Tue, Dec 11, 2012 15.20 15.46 15.17 15.44
5457 NASDAQ NATR Mon, Dec 10, 2012 15.33 15.33 14.94 15.15
5456 NASDAQ NATR Fri, Dec 7, 2012 15.06 15.27 14.83 15.26
5455 NASDAQ NATR Thu, Dec 6, 2012 14.90 15.08 14.81 14.92
5454 NASDAQ NATR Wed, Dec 5, 2012 15.38 15.50 15.16 15.16
5453 NASDAQ NATR Tue, Dec 4, 2012 15.10 15.47 15.04 15.34
5452 NASDAQ NATR Mon, Dec 3, 2012 15.40 15.50 14.89 15.04
5451 NASDAQ NATR Fri, Nov 30, 2012 15.12 15.43 14.90 15.33
5450 NASDAQ NATR Thu, Nov 29, 2012 15.50 15.50 14.96 15.13
5449 NASDAQ NATR Wed, Nov 28, 2012 15.49 15.50 15.08 15.31
5448 NASDAQ NATR Tue, Nov 27, 2012 15.60 15.75 15.33 15.64
5447 NASDAQ NATR Mon, Nov 26, 2012 15.07 15.63 15.04 15.57
5446 NASDAQ NATR Fri, Nov 23, 2012 14.91 15.23 14.68 15.07
5445 NASDAQ NATR Wed, Nov 21, 2012 14.81 14.91 14.65 14.91
5444 NASDAQ NATR Tue, Nov 20, 2012 14.97 15.28 14.39 14.72
5443 NASDAQ NATR Mon, Nov 19, 2012 15.34 15.34 14.87 15.03
5442 NASDAQ NATR Fri, Nov 16, 2012 14.98 15.49 14.89 15.10
5441 NASDAQ NATR Thu, Nov 15, 2012 14.88 15.14 14.71 14.94
5440 NASDAQ NATR Wed, Nov 14, 2012 14.92 15.57 14.77 14.92
5439 NASDAQ NATR Tue, Nov 13, 2012 14.87 15.33 14.84 14.92
5438 NASDAQ NATR Mon, Nov 12, 2012 14.64 15.20 14.64 14.97
5437 NASDAQ NATR Fri, Nov 9, 2012 14.17 14.60 14.05 14.49
5436 NASDAQ NATR Thu, Nov 8, 2012 14.52 14.78 14.25 14.27
5435 NASDAQ NATR Wed, Nov 7, 2012 14.47 14.78 14.40 14.51
5434 NASDAQ NATR Tue, Nov 6, 2012 14.79 14.84 14.25 14.56
5433 NASDAQ NATR Mon, Nov 5, 2012 14.25 15.86 14.25 14.69
5432 NASDAQ NATR Fri, Nov 2, 2012 16.71 16.71 14.00 14.21
5431 NASDAQ NATR Thu, Nov 1, 2012 17.15 17.33 16.52 16.82
5430 NASDAQ NATR Wed, Oct 31, 2012 16.90 17.26 16.75 17.19
5429 NASDAQ NATR Fri, Oct 26, 2012 16.98 17.01 16.72 17.01
5428 NASDAQ NATR Thu, Oct 25, 2012 17.14 17.14 16.69 16.94
5427 NASDAQ NATR Wed, Oct 24, 2012 16.73 16.90 16.67 16.79
5426 NASDAQ NATR Tue, Oct 23, 2012 17.02 17.20 16.52 16.69
5425 NASDAQ NATR Mon, Oct 22, 2012 16.98 17.23 16.91 17.17
5424 NASDAQ NATR Fri, Oct 19, 2012 17.33 17.33 16.65 17.00
5423 NASDAQ NATR Thu, Oct 18, 2012 17.67 17.68 17.46 17.52
5422 NASDAQ NATR Wed, Oct 17, 2012 17.60 17.67 17.29 17.66
5421 NASDAQ NATR Tue, Oct 16, 2012 17.70 17.70 17.36 17.59
5420 NASDAQ NATR Mon, Oct 15, 2012 17.70 17.70 17.40 17.60
5419 NASDAQ NATR Fri, Oct 12, 2012 17.58 17.69 17.51 17.62
5418 NASDAQ NATR Thu, Oct 11, 2012 17.50 17.60 17.42 17.58
5417 NASDAQ NATR Wed, Oct 10, 2012 17.25 17.40 17.13 17.40
5416 NASDAQ NATR Tue, Oct 9, 2012 17.31 17.45 17.20 17.30
5415 NASDAQ NATR Mon, Oct 8, 2012 17.04 17.66 17.04 17.35
5414 NASDAQ NATR Fri, Oct 5, 2012 17.60 17.60 17.00 17.08
5413 NASDAQ NATR Thu, Oct 4, 2012 17.85 17.85 17.38 17.61
5412 NASDAQ NATR Wed, Oct 3, 2012 17.72 17.88 17.34 17.71
5411 NASDAQ NATR Tue, Oct 2, 2012 17.46 18.39 17.40 17.73
5410 NASDAQ NATR Mon, Oct 1, 2012 16.51 17.42 16.51 17.33
5409 NASDAQ NATR Fri, Sep 28, 2012 16.45 16.55 16.01 16.34
5408 NASDAQ NATR Thu, Sep 27, 2012 16.27 16.51 16.10 16.51
5407 NASDAQ NATR Wed, Sep 26, 2012 16.28 16.35 15.71 16.12
5406 NASDAQ NATR Tue, Sep 25, 2012 16.35 16.36 16.12 16.19
5405 NASDAQ NATR Mon, Sep 24, 2012 16.31 16.58 16.13 16.32
5404 NASDAQ NATR Fri, Sep 21, 2012 15.98 16.40 15.65 16.31
5403 NASDAQ NATR Thu, Sep 20, 2012 15.77 15.99 15.58 15.87
5402 NASDAQ NATR Wed, Sep 19, 2012 15.95 15.99 15.66 15.91
5401 NASDAQ NATR Tue, Sep 18, 2012 15.89 16.00 15.71 15.90
5400 NASDAQ NATR Mon, Sep 17, 2012 15.54 16.00 15.54 15.93
5399 NASDAQ NATR Fri, Sep 14, 2012 15.39 15.67 15.23 15.58
5398 NASDAQ NATR Thu, Sep 13, 2012 15.31 15.44 15.16 15.35
5397 NASDAQ NATR Wed, Sep 12, 2012 15.21 15.23 15.11 15.21
5396 NASDAQ NATR Tue, Sep 11, 2012 15.26 15.57 15.02 15.21
5395 NASDAQ NATR Mon, Sep 10, 2012 15.40 15.69 15.09 15.32
5394 NASDAQ NATR Fri, Sep 7, 2012 15.38 15.49 14.93 15.34
5393 NASDAQ NATR Thu, Sep 6, 2012 15.74 15.76 14.54 15.32
5392 NASDAQ NATR Wed, Sep 5, 2012 15.46 15.85 15.41 15.58
5391 NASDAQ NATR Tue, Sep 4, 2012 15.73 15.73 15.16 15.48
5390 NASDAQ NATR Fri, Aug 31, 2012 15.47 15.77 15.14 15.77
5389 NASDAQ NATR Thu, Aug 30, 2012 15.22 15.49 15.02 15.25
5388 NASDAQ NATR Wed, Aug 29, 2012 15.07 15.50 14.89 15.38
5387 NASDAQ NATR Tue, Aug 28, 2012 14.96 15.27 14.87 15.10
5386 NASDAQ NATR Mon, Aug 27, 2012 15.09 15.25 14.76 15.02
5385 NASDAQ NATR Fri, Aug 24, 2012 14.77 15.37 14.77 15.25
5384 NASDAQ NATR Thu, Aug 23, 2012 14.51 15.25 14.51 14.75
5383 NASDAQ NATR Wed, Aug 22, 2012 14.76 14.76 14.50 14.50
5382 NASDAQ NATR Tue, Aug 21, 2012 14.82 15.00 14.52 14.74
5381 NASDAQ NATR Mon, Aug 20, 2012 15.01 15.05 14.28 14.71
5380 NASDAQ NATR Fri, Aug 17, 2012 14.40 15.18 14.22 15.13
5379 NASDAQ NATR Thu, Aug 16, 2012 14.38 14.47 14.04 14.45
5378 NASDAQ NATR Wed, Aug 15, 2012 14.12 14.50 14.12 14.44
5377 NASDAQ NATR Tue, Aug 14, 2012 14.23 14.51 14.00 14.11
5376 NASDAQ NATR Mon, Aug 13, 2012 14.27 14.27 13.71 14.09
5375 NASDAQ NATR Fri, Aug 10, 2012 14.50 14.50 13.63 14.38
5374 NASDAQ NATR Thu, Aug 9, 2012 14.38 15.10 14.35 14.44
5373 NASDAQ NATR Wed, Aug 8, 2012 15.84 15.94 15.40 15.45
5372 NASDAQ NATR Tue, Aug 7, 2012 15.40 16.08 15.05 15.86
5371 NASDAQ NATR Mon, Aug 6, 2012 15.98 16.51 14.99 15.22
5370 NASDAQ NATR Fri, Aug 3, 2012 15.34 16.44 15.28 16.01
5369 NASDAQ NATR Thu, Aug 2, 2012 14.85 15.10 14.83 14.99
5368 NASDAQ NATR Wed, Aug 1, 2012 15.63 16.19 14.87 14.87
5367 NASDAQ NATR Tue, Jul 31, 2012 15.40 15.71 15.11 15.46
5366 NASDAQ NATR Mon, Jul 30, 2012 15.74 15.74 15.18 15.40
5365 NASDAQ NATR Fri, Jul 27, 2012 14.97 15.67 14.60 15.57
5364 NASDAQ NATR Thu, Jul 26, 2012 14.78 15.13 14.78 14.95
5363 NASDAQ NATR Wed, Jul 25, 2012 14.49 14.79 14.43 14.57
5362 NASDAQ NATR Tue, Jul 24, 2012 15.21 15.21 14.35 14.42
5361 NASDAQ NATR Mon, Jul 23, 2012 15.15 15.68 15.12 15.13
5360 NASDAQ NATR Fri, Jul 20, 2012 15.08 15.59 14.97 15.08
5359 NASDAQ NATR Thu, Jul 19, 2012 15.50 15.64 15.18 15.20
5358 NASDAQ NATR Wed, Jul 18, 2012 15.57 15.57 15.16 15.37
5357 NASDAQ NATR Tue, Jul 17, 2012 16.28 16.28 15.50 15.55
5356 NASDAQ NATR Mon, Jul 16, 2012 16.58 16.58 15.60 16.10
5355 NASDAQ NATR Fri, Jul 13, 2012 15.82 16.67 15.60 16.57
5354 NASDAQ NATR Thu, Jul 12, 2012 16.07 16.22 15.36 15.71
5353 NASDAQ NATR Wed, Jul 11, 2012 16.92 16.92 16.30 16.68
5352 NASDAQ NATR Tue, Jul 10, 2012 16.70 17.02 16.67 16.91
5351 NASDAQ NATR Mon, Jul 9, 2012 16.83 16.93 16.60 16.67
5350 NASDAQ NATR Fri, Jul 6, 2012 16.44 17.19 16.44 16.81
5349 NASDAQ NATR Thu, Jul 5, 2012 16.15 16.79 16.12 16.66
5348 NASDAQ NATR Tue, Jul 3, 2012 15.72 16.25 15.58 16.25
5347 NASDAQ NATR Mon, Jul 2, 2012 15.08 15.74 14.82 15.72
5346 NASDAQ NATR Fri, Jun 29, 2012 14.96 15.41 14.23 15.10
5345 NASDAQ NATR Thu, Jun 28, 2012 14.13 14.47 14.13 14.44
5344 NASDAQ NATR Wed, Jun 27, 2012 14.02 14.34 13.76 14.26
5343 NASDAQ NATR Tue, Jun 26, 2012 13.97 14.08 13.77 14.04
5342 NASDAQ NATR Mon, Jun 25, 2012 13.85 14.05 13.85 13.98
5341 NASDAQ NATR Fri, Jun 22, 2012 13.82 14.10 13.70 14.07
5340 NASDAQ NATR Thu, Jun 21, 2012 14.58 14.90 13.50 13.70
5339 NASDAQ NATR Wed, Jun 20, 2012 14.94 14.96 14.40 14.77
5338 NASDAQ NATR Tue, Jun 19, 2012 14.95 15.18 14.74 14.91
5337 NASDAQ NATR Mon, Jun 18, 2012 14.90 15.20 14.43 14.93
5336 NASDAQ NATR Fri, Jun 15, 2012 14.44 15.09 14.36 15.06
5335 NASDAQ NATR Thu, Jun 14, 2012 13.82 14.92 13.82 14.64
5334 NASDAQ NATR Wed, Jun 13, 2012 14.22 14.60 14.05 14.14
5333 NASDAQ NATR Tue, Jun 12, 2012 14.29 14.45 13.94 14.19
5332 NASDAQ NATR Mon, Jun 11, 2012 14.81 14.99 14.12 14.18
5331 NASDAQ NATR Fri, Jun 8, 2012 14.47 14.86 14.47 14.72
5330 NASDAQ NATR Thu, Jun 7, 2012 14.77 14.78 14.35 14.44
5329 NASDAQ NATR Wed, Jun 6, 2012 14.36 14.74 14.23 14.60
5328 NASDAQ NATR Tue, Jun 5, 2012 14.08 14.50 13.97 14.29
5327 NASDAQ NATR Mon, Jun 4, 2012 14.33 14.40 13.84 14.17
5326 NASDAQ NATR Fri, Jun 1, 2012 14.19 14.59 14.17 14.33
5325 NASDAQ NATR Thu, May 31, 2012 14.05 14.65 14.04 14.60
5324 NASDAQ NATR Wed, May 30, 2012 13.99 14.18 13.69 14.08
5323 NASDAQ NATR Tue, May 29, 2012 13.43 14.07 13.12 14.04
5322 NASDAQ NATR Fri, May 25, 2012 13.27 13.33 13.05 13.16
5321 NASDAQ NATR Thu, May 24, 2012 13.27 13.33 13.05 13.26
5320 NASDAQ NATR Wed, May 23, 2012 13.26 13.35 13.09 13.32
5319 NASDAQ NATR Tue, May 22, 2012 13.74 13.95 13.18 13.34
5318 NASDAQ NATR Mon, May 21, 2012 13.54 13.81 13.40 13.81
5317 NASDAQ NATR Fri, May 18, 2012 13.47 13.76 13.33 13.54
5316 NASDAQ NATR Thu, May 17, 2012 14.10 14.23 13.37 13.50
5315 NASDAQ NATR Wed, May 16, 2012 13.79 14.43 13.63 14.14
5314 NASDAQ NATR Tue, May 15, 2012 13.23 13.96 13.02 13.78
5313 NASDAQ NATR Mon, May 14, 2012 14.10 14.37 12.66 13.21
5312 NASDAQ NATR Fri, May 11, 2012 14.61 14.77 14.20 14.24
5311 NASDAQ NATR Thu, May 10, 2012 14.71 14.90 14.63 14.69
5310 NASDAQ NATR Wed, May 9, 2012 14.72 14.94 14.68 14.75
5309 NASDAQ NATR Tue, May 8, 2012 14.57 14.90 14.56 14.86
5308 NASDAQ NATR Mon, May 7, 2012 14.55 14.83 14.03 14.17
5307 NASDAQ NATR Fri, May 4, 2012 14.99 14.99 14.42 14.63
5306 NASDAQ NATR Thu, May 3, 2012 15.16 15.16 14.71 15.05
5305 NASDAQ NATR Wed, May 2, 2012 14.81 15.42 14.52 15.17
5304 NASDAQ NATR Tue, May 1, 2012 15.42 15.68 14.60 14.94
5303 NASDAQ NATR Mon, Apr 30, 2012 15.51 15.60 15.37 15.48
5302 NASDAQ NATR Fri, Apr 27, 2012 15.43 15.55 15.20 15.51
5301 NASDAQ NATR Thu, Apr 26, 2012 15.19 15.45 15.18 15.34
5300 NASDAQ NATR Wed, Apr 25, 2012 14.91 15.25 14.65 15.18
5299 NASDAQ NATR Tue, Apr 24, 2012 14.43 14.71 14.32 14.71
5298 NASDAQ NATR Mon, Apr 23, 2012 14.42 14.61 14.12 14.44
5297 NASDAQ NATR Fri, Apr 20, 2012 14.79 14.84 14.49 14.64
5296 NASDAQ NATR Thu, Apr 19, 2012 14.45 14.68 14.35 14.45
5295 NASDAQ NATR Wed, Apr 18, 2012 14.24 14.61 14.04 14.33
5294 NASDAQ NATR Tue, Apr 17, 2012 13.82 14.48 13.68 14.37
5293 NASDAQ NATR Mon, Apr 16, 2012 14.17 14.24 13.64 13.65
5292 NASDAQ NATR Fri, Apr 13, 2012 14.34 14.35 14.16 14.17
5291 NASDAQ NATR Thu, Apr 12, 2012 14.19 14.58 14.19 14.50
5290 NASDAQ NATR Wed, Apr 11, 2012 14.55 14.70 14.00 14.37
5289 NASDAQ NATR Tue, Apr 10, 2012 14.87 14.99 13.87 14.40
5288 NASDAQ NATR Mon, Apr 9, 2012 15.22 15.37 14.86 14.86
5287 NASDAQ NATR Thu, Apr 5, 2012 15.74 15.93 15.12 15.47
5286 NASDAQ NATR Wed, Apr 4, 2012 15.81 16.36 15.31 15.74
5285 NASDAQ NATR Tue, Apr 3, 2012 16.03 16.24 15.85 15.91
5284 NASDAQ NATR Mon, Apr 2, 2012 16.17 16.35 16.00 16.12
5283 NASDAQ NATR Fri, Mar 30, 2012 16.51 16.51 15.95 16.02
5282 NASDAQ NATR Thu, Mar 29, 2012 16.54 16.73 16.41 16.41
5281 NASDAQ NATR Wed, Mar 28, 2012 16.89 16.89 16.37 16.68
5280 NASDAQ NATR Tue, Mar 27, 2012 17.05 17.32 16.72 16.84
5279 NASDAQ NATR Mon, Mar 26, 2012 16.27 17.25 16.27 17.11
5278 NASDAQ NATR Fri, Mar 23, 2012 15.84 16.20 15.70 16.20
5277 NASDAQ NATR Thu, Mar 22, 2012 15.57 15.78 15.45 15.75
5276 NASDAQ NATR Wed, Mar 21, 2012 15.61 15.84 15.41 15.67
5275 NASDAQ NATR Tue, Mar 20, 2012 15.52 15.75 15.17 15.64
5274 NASDAQ NATR Mon, Mar 19, 2012 15.90 16.00 15.45 15.69
5273 NASDAQ NATR Fri, Mar 16, 2012 16.05 16.21 15.89 16.00
5272 NASDAQ NATR Thu, Mar 15, 2012 16.36 16.94 15.75 16.00
5271 NASDAQ NATR Wed, Mar 14, 2012 16.68 16.97 16.50 16.69
5270 NASDAQ NATR Tue, Mar 13, 2012 16.65 16.69 16.06 16.66
5269 NASDAQ NATR Mon, Mar 12, 2012 16.60 16.86 16.22 16.44
5268 NASDAQ NATR Fri, Mar 9, 2012 16.22 16.80 16.10 16.55
5267 NASDAQ NATR Thu, Mar 8, 2012 16.58 16.73 15.92 16.27
5266 NASDAQ NATR Wed, Mar 7, 2012 16.34 16.64 15.88 16.46
5265 NASDAQ NATR Tue, Mar 6, 2012 16.81 16.89 16.13 16.22
5264 NASDAQ NATR Mon, Mar 5, 2012 15.40 17.60 15.40 16.97
5263 NASDAQ NATR Fri, Mar 2, 2012 14.53 14.78 14.36 14.63
5262 NASDAQ NATR Thu, Mar 1, 2012 14.84 15.05 14.51 14.52
5261 NASDAQ NATR Wed, Feb 29, 2012 14.97 15.17 14.70 14.75
5260 NASDAQ NATR Tue, Feb 28, 2012 14.98 15.26 14.75 14.90
5259 NASDAQ NATR Mon, Feb 27, 2012 15.35 15.42 15.01 15.15
5258 NASDAQ NATR Fri, Feb 24, 2012 15.83 15.99 15.46 15.50
5257 NASDAQ NATR Thu, Feb 23, 2012 15.52 15.95 15.48 15.88
5256 NASDAQ NATR Wed, Feb 22, 2012 15.84 16.05 15.43 15.44
5255 NASDAQ NATR Tue, Feb 21, 2012 16.19 16.19 15.55 15.84
5254 NASDAQ NATR Fri, Feb 17, 2012 16.30 16.30 15.78 16.16
5253 NASDAQ NATR Thu, Feb 16, 2012 16.01 16.35 15.75 16.22
5252 NASDAQ NATR Wed, Feb 15, 2012 16.30 16.41 16.07 16.20
5251 NASDAQ NATR Tue, Feb 14, 2012 16.08 18.00 15.73 16.16
5250 NASDAQ NATR Mon, Feb 13, 2012 16.14 16.32 15.93 16.21
5249 NASDAQ NATR Fri, Feb 10, 2012 16.08 16.58 15.82 15.95
5248 NASDAQ NATR Thu, Feb 9, 2012 16.00 16.41 15.97 16.29
5247 NASDAQ NATR Wed, Feb 8, 2012 16.15 16.50 15.84 16.20
5246 NASDAQ NATR Tue, Feb 7, 2012 15.85 16.29 15.64 16.11
5245 NASDAQ NATR Mon, Feb 6, 2012 15.81 15.89 15.51 15.85
5244 NASDAQ NATR Fri, Feb 3, 2012 15.60 15.99 15.29 15.87
5243 NASDAQ NATR Thu, Feb 2, 2012 15.53 15.56 14.90 15.29
5242 NASDAQ NATR Wed, Feb 1, 2012 14.88 15.66 14.81 15.48
5241 NASDAQ NATR Tue, Jan 31, 2012 14.61 15.31 14.61 14.90
5240 NASDAQ NATR Mon, Jan 30, 2012 15.11 15.56 14.42 14.57
5239 NASDAQ NATR Fri, Jan 27, 2012 15.40 15.59 15.00 15.33
5238 NASDAQ NATR Thu, Jan 26, 2012 15.45 15.58 14.90 15.49
5237 NASDAQ NATR Wed, Jan 25, 2012 15.32 15.81 15.32 15.69
5236 NASDAQ NATR Tue, Jan 24, 2012 14.98 15.41 14.96 15.41
5235 NASDAQ NATR Mon, Jan 23, 2012 15.99 15.99 14.63 15.10
5234 NASDAQ NATR Fri, Jan 20, 2012 15.28 15.70 15.22 15.51
5233 NASDAQ NATR Thu, Jan 19, 2012 14.82 15.47 14.82 15.35
5232 NASDAQ NATR Wed, Jan 18, 2012 14.51 14.88 14.46 14.82
5231 NASDAQ NATR Tue, Jan 17, 2012 14.51 14.83 13.61 14.52
5230 NASDAQ NATR Fri, Jan 13, 2012 14.54 14.65 14.29 14.33
5229 NASDAQ NATR Thu, Jan 12, 2012 15.08 15.15 14.65 14.80
5228 NASDAQ NATR Wed, Jan 11, 2012 15.44 15.54 15.12 15.32
5227 NASDAQ NATR Tue, Jan 10, 2012 15.80 15.85 15.37 15.46
5226 NASDAQ NATR Mon, Jan 9, 2012 15.75 16.13 15.45 15.59
5225 NASDAQ NATR Fri, Jan 6, 2012 15.48 15.94 15.48 15.62
5224 NASDAQ NATR Thu, Jan 5, 2012 15.74 15.88 15.39 15.64
5223 NASDAQ NATR Wed, Jan 4, 2012 16.18 16.69 15.80 15.87
5222 NASDAQ NATR Tue, Jan 3, 2012 15.99 16.55 15.99 16.33
5221 NASDAQ NATR Fri, Dec 30, 2011 15.84 16.04 15.49 15.52
5220 NASDAQ NATR Thu, Dec 29, 2011 15.48 15.95 15.48 15.89
5219 NASDAQ NATR Wed, Dec 28, 2011 15.82 15.96 15.39 15.50
5218 NASDAQ NATR Tue, Dec 27, 2011 16.08 16.35 15.38 15.79
5217 NASDAQ NATR Fri, Dec 23, 2011 15.57 15.68 15.39 15.58
5216 NASDAQ NATR Thu, Dec 22, 2011 15.86 15.90 15.30 15.49
5215 NASDAQ NATR Wed, Dec 21, 2011 15.99 16.32 15.43 15.83
5214 NASDAQ NATR Tue, Dec 20, 2011 15.50 16.52 15.50 15.94
5213 NASDAQ NATR Mon, Dec 19, 2011 15.30 16.19 15.13 15.14
5212 NASDAQ NATR Fri, Dec 16, 2011 15.14 15.99 15.14 15.20
5211 NASDAQ NATR Thu, Dec 15, 2011 14.64 15.28 14.01 15.00
5210 NASDAQ NATR Wed, Dec 14, 2011 14.45 15.15 14.10 14.45
5209 NASDAQ NATR Tue, Dec 13, 2011 15.20 15.44 14.58 14.60
5208 NASDAQ NATR Mon, Dec 12, 2011 15.94 15.97 14.81 15.06
5207 NASDAQ NATR Fri, Dec 9, 2011 15.62 16.33 15.47 16.24
5206 NASDAQ NATR Thu, Dec 8, 2011 16.17 16.69 15.30 15.52
5205 NASDAQ NATR Wed, Dec 7, 2011 16.55 16.65 15.96 16.45
5204 NASDAQ NATR Tue, Dec 6, 2011 16.71 17.27 16.43 16.66
5203 NASDAQ NATR Mon, Dec 5, 2011 17.06 17.06 16.48 16.75
5202 NASDAQ NATR Fri, Dec 2, 2011 16.83 17.14 16.49 16.70
5201 NASDAQ NATR Thu, Dec 1, 2011 17.68 18.18 16.45 16.45
5200 NASDAQ NATR Wed, Nov 30, 2011 17.65 18.32 17.13 17.66
5199 NASDAQ NATR Tue, Nov 29, 2011 17.10 17.21 16.64 17.05
5198 NASDAQ NATR Mon, Nov 28, 2011 16.48 17.17 15.81 17.00
5197 NASDAQ NATR Fri, Nov 25, 2011 16.37 16.92 15.93 15.93
5196 NASDAQ NATR Wed, Nov 23, 2011 17.52 17.54 16.17 16.44
5195 NASDAQ NATR Tue, Nov 22, 2011 17.72 17.94 17.05 17.73
5194 NASDAQ NATR Mon, Nov 21, 2011 17.51 17.95 17.14 17.75
5193 NASDAQ NATR Fri, Nov 18, 2011 16.74 17.97 16.69 17.91
5192 NASDAQ NATR Thu, Nov 17, 2011 16.85 17.20 16.34 16.78
5191 NASDAQ NATR Wed, Nov 16, 2011 16.55 17.99 16.40 17.23
5190 NASDAQ NATR Tue, Nov 15, 2011 15.03 16.15 14.21 15.98
5189 NASDAQ NATR Mon, Nov 14, 2011 15.43 15.48 15.00 15.10
5188 NASDAQ NATR Fri, Nov 11, 2011 15.22 15.65 15.21 15.52
5187 NASDAQ NATR Thu, Nov 10, 2011 15.31 16.14 14.99 15.34
5186 NASDAQ NATR Wed, Nov 9, 2011 15.36 16.29 15.15 15.42
5185 NASDAQ NATR Tue, Nov 8, 2011 16.74 18.51 15.63 15.71
5184 NASDAQ NATR Mon, Nov 7, 2011 16.93 17.22 16.13 16.47
5183 NASDAQ NATR Fri, Nov 4, 2011 17.92 18.03 16.90 17.02
5182 NASDAQ NATR Thu, Nov 3, 2011 17.72 18.18 17.29 18.15
5181 NASDAQ NATR Wed, Nov 2, 2011 17.10 17.73 16.71 17.40
5180 NASDAQ NATR Tue, Nov 1, 2011 16.66 17.37 16.29 16.68
5179 NASDAQ NATR Mon, Oct 31, 2011 17.62 17.68 17.25 17.36
5178 NASDAQ NATR Fri, Oct 28, 2011 18.50 18.50 17.90 18.01
5177 NASDAQ NATR Thu, Oct 27, 2011 16.69 18.28 16.21 18.25
5176 NASDAQ NATR Wed, Oct 26, 2011 15.57 16.27 15.33 16.13
5175 NASDAQ NATR Tue, Oct 25, 2011 16.51 16.54 15.16 15.26
5174 NASDAQ NATR Mon, Oct 24, 2011 15.65 16.34 15.40 16.31
5173 NASDAQ NATR Fri, Oct 21, 2011 15.36 15.53 14.95 15.37
5172 NASDAQ NATR Thu, Oct 20, 2011 14.80 15.18 14.48 15.06
5171 NASDAQ NATR Wed, Oct 19, 2011 15.43 15.85 14.72 14.80
5170 NASDAQ NATR Tue, Oct 18, 2011 15.14 15.59 14.58 15.42
5169 NASDAQ NATR Mon, Oct 17, 2011 15.75 15.92 14.87 15.12
5168 NASDAQ NATR Fri, Oct 14, 2011 15.40 15.97 15.08 15.93
5167 NASDAQ NATR Thu, Oct 13, 2011 14.80 15.29 14.78 15.28
5166 NASDAQ NATR Wed, Oct 12, 2011 14.92 15.33 14.48 15.14
5165 NASDAQ NATR Tue, Oct 11, 2011 15.06 15.06 14.33 14.64
5164 NASDAQ NATR Mon, Oct 10, 2011 14.32 15.17 14.02 15.12
5163 NASDAQ NATR Fri, Oct 7, 2011 14.51 14.51 13.75 14.04
5162 NASDAQ NATR Thu, Oct 6, 2011 14.44 14.58 13.71 14.46
5161 NASDAQ NATR Wed, Oct 5, 2011 14.15 14.63 13.68 14.45
5160 NASDAQ NATR Tue, Oct 4, 2011 12.40 14.22 12.40 14.13
5159 NASDAQ NATR Mon, Oct 3, 2011 13.94 14.39 12.50 12.50
5158 NASDAQ NATR Fri, Sep 30, 2011 14.14 14.44 13.95 14.08
5157 NASDAQ NATR Thu, Sep 29, 2011 15.20 15.20 13.80 14.33
5156 NASDAQ NATR Wed, Sep 28, 2011 15.45 16.75 14.94 14.98
5155 NASDAQ NATR Tue, Sep 27, 2011 14.64 15.89 14.64 15.40
5154 NASDAQ NATR Mon, Sep 26, 2011 14.50 14.59 13.91 14.35
5153 NASDAQ NATR Fri, Sep 23, 2011 14.48 14.99 14.31 14.35
5152 NASDAQ NATR Thu, Sep 22, 2011 15.24 15.56 14.40 14.44
5151 NASDAQ NATR Wed, Sep 21, 2011 15.40 16.17 15.36 15.54
5150 NASDAQ NATR Tue, Sep 20, 2011 16.15 16.15 15.32 15.33
5149 NASDAQ NATR Mon, Sep 19, 2011 16.66 16.66 16.03 16.30
5148 NASDAQ NATR Fri, Sep 16, 2011 17.04 17.04 16.05 16.90
5147 NASDAQ NATR Thu, Sep 15, 2011 17.11 17.11 16.80 16.95
5146 NASDAQ NATR Wed, Sep 14, 2011 16.48 17.17 16.16 17.00
5145 NASDAQ NATR Tue, Sep 13, 2011 15.98 16.40 15.73 16.37
5144 NASDAQ NATR Mon, Sep 12, 2011 16.08 16.39 15.69 15.91
5143 NASDAQ NATR Fri, Sep 9, 2011 16.16 16.70 15.52 16.30
5142 NASDAQ NATR Thu, Sep 8, 2011 17.32 17.52 16.70 16.87
5141 NASDAQ NATR Wed, Sep 7, 2011 17.39 17.62 17.36 17.48
5140 NASDAQ NATR Tue, Sep 6, 2011 17.38 17.67 16.90 17.16
5139 NASDAQ NATR Fri, Sep 2, 2011 17.51 18.26 17.33 17.77
5138 NASDAQ NATR Thu, Sep 1, 2011 17.25 18.27 17.25 17.81
5137 NASDAQ NATR Wed, Aug 31, 2011 18.25 18.25 17.11 17.21
5136 NASDAQ NATR Tue, Aug 30, 2011 18.14 18.25 17.81 18.25
5135 NASDAQ NATR Mon, Aug 29, 2011 18.25 18.29 17.79 18.25
5134 NASDAQ NATR Fri, Aug 26, 2011 17.93 18.25 16.69 18.22
5133 NASDAQ NATR Thu, Aug 25, 2011 18.25 18.26 18.01 18.07
5132 NASDAQ NATR Wed, Aug 24, 2011 18.41 18.46 18.17 18.25
5131 NASDAQ NATR Tue, Aug 23, 2011 18.25 18.44 18.15 18.39
5130 NASDAQ NATR Mon, Aug 22, 2011 18.36 18.45 17.86 18.25
5129 NASDAQ NATR Fri, Aug 19, 2011 17.97 18.39 16.84 18.21
5128 NASDAQ NATR Thu, Aug 18, 2011 17.70 18.34 17.43 18.20
5127 NASDAQ NATR Wed, Aug 17, 2011 17.89 18.42 17.84 18.24
5126 NASDAQ NATR Tue, Aug 16, 2011 18.32 18.47 17.83 18.07
5125 NASDAQ NATR Mon, Aug 15, 2011 18.97 18.97 18.33 18.45
5124 NASDAQ NATR Fri, Aug 12, 2011 18.55 18.97 16.60 18.42
5123 NASDAQ NATR Thu, Aug 11, 2011 18.26 18.83 18.24 18.42
5122 NASDAQ NATR Wed, Aug 10, 2011 18.30 18.96 17.53 18.33
5121 NASDAQ NATR Tue, Aug 9, 2011 18.80 19.11 16.80 18.87
5120 NASDAQ NATR Mon, Aug 8, 2011 18.29 19.22 18.18 18.30
5119 NASDAQ NATR Fri, Aug 5, 2011 19.91 19.91 17.22 18.98
5118 NASDAQ NATR Thu, Aug 4, 2011 19.32 21.16 18.50 19.55
5117 NASDAQ NATR Wed, Aug 3, 2011 16.75 20.10 16.74 19.60
5116 NASDAQ NATR Tue, Aug 2, 2011 15.76 16.30 15.76 15.91
5115 NASDAQ NATR Mon, Aug 1, 2011 16.91 17.22 15.63 15.95
5114 NASDAQ NATR Fri, Jul 29, 2011 17.18 17.18 16.34 16.69
5113 NASDAQ NATR Thu, Jul 28, 2011 17.43 17.69 17.18 17.39
5112 NASDAQ NATR Wed, Jul 27, 2011 18.25 18.36 17.34 17.45
5111 NASDAQ NATR Tue, Jul 26, 2011 18.27 18.50 17.70 18.46
5110 NASDAQ NATR Mon, Jul 25, 2011 19.73 19.73 17.98 18.37
5109 NASDAQ NATR Fri, Jul 22, 2011 20.33 20.33 19.51 20.00
5108 NASDAQ NATR Thu, Jul 21, 2011 20.25 20.37 20.01 20.31
5107 NASDAQ NATR Wed, Jul 20, 2011 19.50 20.59 19.32 20.22
5106 NASDAQ NATR Tue, Jul 19, 2011 19.65 19.65 19.18 19.49
5105 NASDAQ NATR Mon, Jul 18, 2011 19.36 19.45 19.03 19.35
5104 NASDAQ NATR Fri, Jul 15, 2011 19.28 19.78 19.26 19.50
5103 NASDAQ NATR Thu, Jul 14, 2011 19.38 19.82 19.14 19.25
5102 NASDAQ NATR Wed, Jul 13, 2011 19.70 19.96 19.00 19.76
5101 NASDAQ NATR Tue, Jul 12, 2011 19.98 20.14 19.44 19.48
5100 NASDAQ NATR Mon, Jul 11, 2011 19.67 20.00 19.67 19.97
5099 NASDAQ NATR Fri, Jul 8, 2011 19.17 19.87 19.02 19.78
5098 NASDAQ NATR Thu, Jul 7, 2011 19.00 19.61 19.00 19.51
5097 NASDAQ NATR Wed, Jul 6, 2011 19.16 19.24 17.39 18.99
5096 NASDAQ NATR Tue, Jul 5, 2011 19.64 19.64 18.58 19.11
5095 NASDAQ NATR Fri, Jul 1, 2011 19.18 20.12 19.18 19.50
5094 NASDAQ NATR Thu, Jun 30, 2011 19.43 19.87 18.67 19.48
5093 NASDAQ NATR Wed, Jun 29, 2011 19.53 19.59 19.40 19.51
5092 NASDAQ NATR Tue, Jun 28, 2011 19.80 19.80 18.77 19.53
5091 NASDAQ NATR Mon, Jun 27, 2011 18.59 19.88 18.39 19.80
5090 NASDAQ NATR Fri, Jun 24, 2011 16.97 18.22 16.96 18.16
5089 NASDAQ NATR Thu, Jun 23, 2011 17.51 17.65 16.76 17.43
5088 NASDAQ NATR Wed, Jun 22, 2011 16.96 18.00 16.48 17.65
5087 NASDAQ NATR Tue, Jun 21, 2011 16.21 17.48 16.18 16.97
5086 NASDAQ NATR Mon, Jun 20, 2011 14.86 16.00 14.66 15.97
5085 NASDAQ NATR Fri, Jun 17, 2011 15.12 15.24 14.50 14.58
5084 NASDAQ NATR Thu, Jun 16, 2011 14.64 15.10 14.41 15.05
5083 NASDAQ NATR Wed, Jun 15, 2011 14.75 14.90 14.44 14.66
5082 NASDAQ NATR Tue, Jun 14, 2011 14.66 15.03 14.66 14.85
5081 NASDAQ NATR Mon, Jun 13, 2011 15.00 15.13 14.26 14.80
5080 NASDAQ NATR Fri, Jun 10, 2011 14.83 14.85 14.50 14.84
5079 NASDAQ NATR Thu, Jun 9, 2011 14.59 14.97 14.27 14.88
5078 NASDAQ NATR Wed, Jun 8, 2011 15.04 15.25 14.76 14.95
5077 NASDAQ NATR Tue, Jun 7, 2011 14.99 15.40 14.82 15.25
5076 NASDAQ NATR Mon, Jun 6, 2011 14.27 15.40 14.20 14.84
5075 NASDAQ NATR Fri, Jun 3, 2011 13.47 14.29 13.32 14.17
5074 NASDAQ NATR Thu, Jun 2, 2011 13.46 13.85 12.67 13.62
5073 NASDAQ NATR Wed, Jun 1, 2011 14.50 14.50 13.16 13.49
5072 NASDAQ NATR Tue, May 31, 2011 13.71 14.31 13.63 14.15
5071 NASDAQ NATR Fri, May 27, 2011 13.67 13.82 13.38 13.59
5070 NASDAQ NATR Thu, May 26, 2011 11.50 13.82 11.50 13.67
5069 NASDAQ NATR Wed, May 25, 2011 10.65 11.58 10.35 11.38
5068 NASDAQ NATR Tue, May 24, 2011 10.21 10.75 10.21 10.65
5067 NASDAQ NATR Mon, May 23, 2011 10.05 10.24 9.51 10.10
5066 NASDAQ NATR Fri, May 20, 2011 10.05 10.23 10.05 10.08
5065 NASDAQ NATR Thu, May 19, 2011 10.40 10.40 9.96 10.11
5064 NASDAQ NATR Wed, May 18, 2011 10.08 10.48 9.92 10.30
5063 NASDAQ NATR Tue, May 17, 2011 11.37 11.46 9.90 10.12
5062 NASDAQ NATR Mon, May 16, 2011 11.52 11.82 11.15 11.44
5061 NASDAQ NATR Fri, May 13, 2011 11.70 11.81 11.46 11.59
5060 NASDAQ NATR Thu, May 12, 2011 11.37 11.78 11.09 11.75
5059 NASDAQ NATR Wed, May 11, 2011 11.93 11.96 11.31 11.53
5058 NASDAQ NATR Tue, May 10, 2011 11.98 12.10 11.25 12.03
5057 NASDAQ NATR Mon, May 9, 2011 10.67 13.10 10.67 11.86
5056 NASDAQ NATR Fri, May 6, 2011 8.99 11.25 8.90 10.77
5055 NASDAQ NATR Thu, May 5, 2011 8.28 8.45 8.17 8.20
5054 NASDAQ NATR Wed, May 4, 2011 8.38 8.40 8.27 8.28
5053 NASDAQ NATR Tue, May 3, 2011 8.47 8.75 8.47 8.47
5052 NASDAQ NATR Mon, May 2, 2011 8.93 8.91 8.46 8.48
5051 NASDAQ NATR Fri, Apr 29, 2011 8.90 8.92 8.86 8.92
5050 NASDAQ NATR Thu, Apr 28, 2011 8.73 8.87 8.73 8.87
5049 NASDAQ NATR Wed, Apr 27, 2011 8.75 8.78 8.67 8.78
5048 NASDAQ NATR Tue, Apr 26, 2011 8.78 8.85 8.65 8.77
5047 NASDAQ NATR Mon, Apr 25, 2011 8.83 8.85 8.69 8.82
5046 NASDAQ NATR Thu, Apr 21, 2011 8.92 8.92 8.75 8.88
5045 NASDAQ NATR Wed, Apr 20, 2011 8.95 8.95 8.84 8.88
5044 NASDAQ NATR Tue, Apr 19, 2011 8.83 8.95 8.83 8.95
5043 NASDAQ NATR Mon, Apr 18, 2011 8.82 8.82 8.74 8.75
5042 NASDAQ NATR Fri, Apr 15, 2011 8.87 8.99 8.87 8.94
5041 NASDAQ NATR Thu, Apr 14, 2011 8.55 9.00 8.55 8.93
5040 NASDAQ NATR Wed, Apr 13, 2011 8.84 8.95 8.76 8.76
5039 NASDAQ NATR Tue, Apr 12, 2011 8.62 9.02 8.58 8.80
5038 NASDAQ NATR Mon, Apr 11, 2011 8.89 8.91 8.62 8.62
5037 NASDAQ NATR Fri, Apr 8, 2011 9.00 9.00 8.91 8.91
5036 NASDAQ NATR Thu, Apr 7, 2011 9.04 9.01 8.86 8.93
5035 NASDAQ NATR Wed, Apr 6, 2011 9.00 9.01 8.96 9.01
5034 NASDAQ NATR Tue, Apr 5, 2011 8.98 8.99 8.83 8.97
5033 NASDAQ NATR Mon, Apr 4, 2011 9.02 9.02 8.98 8.98
5032 NASDAQ NATR Fri, Apr 1, 2011 8.99 9.02 8.95 8.95
5031 NASDAQ NATR Thu, Mar 31, 2011 9.02 9.02 8.82 8.96
5030 NASDAQ NATR Wed, Mar 30, 2011 9.00 9.09 8.97 9.05
5029 NASDAQ NATR Tue, Mar 29, 2011 8.70 9.25 8.69 9.00
5028 NASDAQ NATR Mon, Mar 28, 2011 8.98 8.82 8.58 8.75
5027 NASDAQ NATR Fri, Mar 25, 2011 8.87 8.94 8.17 8.94
5026 NASDAQ NATR Thu, Mar 24, 2011 9.00 9.00 8.81 8.87
5025 NASDAQ NATR Wed, Mar 23, 2011 8.89 9.15 8.89 9.04
5024 NASDAQ NATR Tue, Mar 22, 2011 8.99 9.10 8.95 9.09
5023 NASDAQ NATR Mon, Mar 21, 2011 9.00 9.05 8.59 9.00
5022 NASDAQ NATR Fri, Mar 18, 2011 8.85 9.06 8.26 9.06
5021 NASDAQ NATR Thu, Mar 17, 2011 8.16 9.15 8.16 8.78
5020 NASDAQ NATR Wed, Mar 16, 2011 8.55 9.02 8.28 8.28
5019 NASDAQ NATR Tue, Mar 15, 2011 8.01 8.93 7.77 8.55
5018 NASDAQ NATR Mon, Mar 14, 2011 8.00 8.46 8.00 8.17
5017 NASDAQ NATR Fri, Mar 11, 2011 8.19 8.19 8.02 8.06
5016 NASDAQ NATR Thu, Mar 10, 2011 8.21 8.21 7.94 8.00
5015 NASDAQ NATR Wed, Mar 9, 2011 8.35 8.35 8.20 8.27
5014 NASDAQ NATR Tue, Mar 8, 2011 8.13 8.40 8.13 8.40
5013 NASDAQ NATR Mon, Mar 7, 2011 8.49 8.49 8.03 8.08
5012 NASDAQ NATR Fri, Mar 4, 2011 8.46 8.48 8.29 8.36
5011 NASDAQ NATR Thu, Mar 3, 2011 8.43 8.72 8.35 8.50
5010 NASDAQ NATR Wed, Mar 2, 2011 8.03 8.45 7.97 8.36
5009 NASDAQ NATR Tue, Mar 1, 2011 8.22 8.22 7.77 8.07
5008 NASDAQ NATR Mon, Feb 28, 2011 8.23 8.23 8.06 8.23
5007 NASDAQ NATR Fri, Feb 25, 2011 8.15 8.23 7.93 8.21
5006 NASDAQ NATR Thu, Feb 24, 2011 8.04 8.20 7.97 8.19
5005 NASDAQ NATR Wed, Feb 23, 2011 8.09 8.15 7.94 8.00
5004 NASDAQ NATR Tue, Feb 22, 2011 8.27 8.35 8.02 8.02
5003 NASDAQ NATR Fri, Feb 18, 2011 8.49 8.66 8.30 8.35
5002 NASDAQ NATR Thu, Feb 17, 2011 8.38 8.46 8.38 8.46
5001 NASDAQ NATR Wed, Feb 16, 2011 8.04 8.48 8.04 8.40
5000 NASDAQ NATR Tue, Feb 15, 2011 8.07 8.22 8.04 8.18
4999 NASDAQ NATR Mon, Feb 14, 2011 8.33 8.34 8.18 8.20
4998 NASDAQ NATR Fri, Feb 11, 2011 8.12 8.34 8.12 8.34
4997 NASDAQ NATR Thu, Feb 10, 2011 8.05 8.38 8.05 8.17
4996 NASDAQ NATR Wed, Feb 9, 2011 8.38 8.38 8.28 8.34
4995 NASDAQ NATR Tue, Feb 8, 2011 8.39 8.41 8.21 8.41
4994 NASDAQ NATR Mon, Feb 7, 2011 8.32 8.44 8.32 8.40
4993 NASDAQ NATR Fri, Feb 4, 2011 8.34 8.43 8.22 8.29
4992 NASDAQ NATR Thu, Feb 3, 2011 8.45 8.49 8.25 8.39
4991 NASDAQ NATR Wed, Feb 2, 2011 8.37 8.49 8.37 8.44
4990 NASDAQ NATR Tue, Feb 1, 2011 8.17 8.45 8.06 8.45
4989 NASDAQ NATR Mon, Jan 31, 2011 7.90 8.21 7.72 8.15
4988 NASDAQ NATR Fri, Jan 28, 2011 8.37 8.37 7.75 7.85
4987 NASDAQ NATR Thu, Jan 27, 2011 8.40 8.51 8.18 8.35
4986 NASDAQ NATR Wed, Jan 26, 2011 7.98 8.50 7.98 8.50
4985 NASDAQ NATR Tue, Jan 25, 2011 8.02 8.20 7.95 8.03
4984 NASDAQ NATR Mon, Jan 24, 2011 8.07 8.21 8.01 8.11
4983 NASDAQ NATR Fri, Jan 21, 2011 8.18 8.25 8.00 8.00
4982 NASDAQ NATR Thu, Jan 20, 2011 8.41 8.42 8.13 8.13
4981 NASDAQ NATR Wed, Jan 19, 2011 8.84 8.84 8.32 8.36
4980 NASDAQ NATR Tue, Jan 18, 2011 8.58 8.90 8.58 8.90
4979 NASDAQ NATR Fri, Jan 14, 2011 8.71 8.88 8.52 8.86
4978 NASDAQ NATR Thu, Jan 13, 2011 8.93 8.93 8.58 8.72
4977 NASDAQ NATR Wed, Jan 12, 2011 8.87 8.95 8.74 8.94
4976 NASDAQ NATR Tue, Jan 11, 2011 8.50 8.79 8.50 8.78
4975 NASDAQ NATR Mon, Jan 10, 2011 8.32 8.69 8.32 8.69
4974 NASDAQ NATR Fri, Jan 7, 2011 8.57 8.63 8.30 8.56
4973 NASDAQ NATR Thu, Jan 6, 2011 8.65 8.67 8.52 8.66
4972 NASDAQ NATR Wed, Jan 5, 2011 8.76 8.76 8.56 8.67
4971 NASDAQ NATR Tue, Jan 4, 2011 8.91 8.91 8.55 8.73
4970 NASDAQ NATR Mon, Jan 3, 2011 8.98 8.98 8.65 8.88
4969 NASDAQ NATR Fri, Dec 31, 2010 8.80 8.98 8.75 8.98
4968 NASDAQ NATR Thu, Dec 30, 2010 8.80 8.93 8.64 8.84
4967 NASDAQ NATR Wed, Dec 29, 2010 8.91 8.91 8.73 8.84
4966 NASDAQ NATR Tue, Dec 28, 2010 9.00 9.00 8.83 8.91
4965 NASDAQ NATR Mon, Dec 27, 2010 8.55 8.92 8.52 8.92
4964 NASDAQ NATR Thu, Dec 23, 2010 8.61 8.75 8.61 8.70
4963 NASDAQ NATR Wed, Dec 22, 2010 8.98 8.98 8.84 8.94
4962 NASDAQ NATR Tue, Dec 21, 2010 8.55 8.95 8.55 8.95
4961 NASDAQ NATR Mon, Dec 20, 2010 9.00 9.01 8.30 8.88
4960 NASDAQ NATR Fri, Dec 17, 2010 9.09 9.25 8.57 9.05
4959 NASDAQ NATR Thu, Dec 16, 2010 8.80 9.23 8.80 9.12
4958 NASDAQ NATR Wed, Dec 15, 2010 8.80 8.84 8.78 8.80
4957 NASDAQ NATR Tue, Dec 14, 2010 8.73 8.80 8.68 8.73
4956 NASDAQ NATR Mon, Dec 13, 2010 8.70 8.75 8.51 8.69
4955 NASDAQ NATR Fri, Dec 10, 2010 8.36 8.75 8.35 8.75
4954 NASDAQ NATR Thu, Dec 9, 2010 8.49 8.75 8.33 8.72
4953 NASDAQ NATR Wed, Dec 8, 2010 8.73 8.73 8.61 8.71
4952 NASDAQ NATR Tue, Dec 7, 2010 8.74 8.75 8.50 8.74
4951 NASDAQ NATR Mon, Dec 6, 2010 8.69 8.75 8.58 8.70
4950 NASDAQ NATR Fri, Dec 3, 2010 8.74 8.76 8.70 8.73
4949 NASDAQ NATR Thu, Dec 2, 2010 8.65 8.79 8.57 8.79
4948 NASDAQ NATR Wed, Dec 1, 2010 8.75 8.75 8.42 8.69
4947 NASDAQ NATR Tue, Nov 30, 2010 8.68 8.73 8.65 8.65
4946 NASDAQ NATR Mon, Nov 29, 2010 8.65 8.73 8.54 8.73
4945 NASDAQ NATR Fri, Nov 26, 2010 8.68 8.75 8.68 8.70
4944 NASDAQ NATR Wed, Nov 24, 2010 8.65 8.73 8.60 8.72
4943 NASDAQ NATR Tue, Nov 23, 2010 8.70 8.71 8.60 8.61
4942 NASDAQ NATR Mon, Nov 22, 2010 8.66 8.75 8.60 8.73
4941 NASDAQ NATR Fri, Nov 19, 2010 8.75 8.75 8.62 8.74
4940 NASDAQ NATR Thu, Nov 18, 2010 8.75 8.75 8.57 8.75
4939 NASDAQ NATR Wed, Nov 17, 2010 8.79 9.00 8.64 8.67
4938 NASDAQ NATR Tue, Nov 16, 2010 8.79 9.00 8.79 8.79
4937 NASDAQ NATR Mon, Nov 15, 2010 8.94 9.10 8.94 9.00
4936 NASDAQ NATR Fri, Nov 12, 2010 9.19 9.19 8.71 8.90
4935 NASDAQ NATR Thu, Nov 11, 2010 9.13 9.40 8.81 9.30
4934 NASDAQ NATR Wed, Nov 10, 2010 8.76 9.29 8.56 9.18
4933 NASDAQ NATR Tue, Nov 9, 2010 8.70 8.90 8.53 8.69
4932 NASDAQ NATR Mon, Nov 8, 2010 8.88 9.00 8.88 8.99
4931 NASDAQ NATR Fri, Nov 5, 2010 9.00 9.00 8.87 9.00
4930 NASDAQ NATR Thu, Nov 4, 2010 8.78 9.00 8.70 9.00
4929 NASDAQ NATR Wed, Nov 3, 2010 8.71 8.74 8.57 8.70
4928 NASDAQ NATR Tue, Nov 2, 2010 8.65 8.81 8.48 8.71
4927 NASDAQ NATR Mon, Nov 1, 2010 8.55 8.74 8.53 8.55
4926 NASDAQ NATR Fri, Oct 29, 2010 8.77 8.82 8.66 8.77
4925 NASDAQ NATR Thu, Oct 28, 2010 8.91 8.91 8.75 8.75
4924 NASDAQ NATR Wed, Oct 27, 2010 8.93 8.93 8.81 8.82
4923 NASDAQ NATR Tue, Oct 26, 2010 8.78 9.00 8.75 8.93
4922 NASDAQ NATR Mon, Oct 25, 2010 8.96 8.96 8.65 8.77
4921 NASDAQ NATR Fri, Oct 22, 2010 8.80 9.00 8.78 8.90
4920 NASDAQ NATR Thu, Oct 21, 2010 8.90 8.90 8.65 8.80
4919 NASDAQ NATR Wed, Oct 20, 2010 8.84 8.89 8.84 8.89
4918 NASDAQ NATR Tue, Oct 19, 2010 8.90 9.00 8.75 8.76
4917 NASDAQ NATR Mon, Oct 18, 2010 8.94 9.00 8.94 8.99
4916 NASDAQ NATR Fri, Oct 15, 2010 8.95 8.95 8.74 8.92
4915 NASDAQ NATR Thu, Oct 14, 2010 8.78 9.21 8.67 8.79
4914 NASDAQ NATR Wed, Oct 13, 2010 9.00 9.00 8.77 9.00
4913 NASDAQ NATR Tue, Oct 12, 2010 8.66 9.05 8.66 9.00
4912 NASDAQ NATR Mon, Oct 11, 2010 8.75 8.90 8.61 8.70
4911 NASDAQ NATR Fri, Oct 8, 2010 8.77 8.95 8.66 8.94
4910 NASDAQ NATR Thu, Oct 7, 2010 8.91 9.00 8.76 8.87
4909 NASDAQ NATR Wed, Oct 6, 2010 8.88 8.97 8.70 8.83
4908 NASDAQ NATR Tue, Oct 5, 2010 9.00 9.10 8.62 9.02
4907 NASDAQ NATR Mon, Oct 4, 2010 8.81 9.05 8.81 8.97
4906 NASDAQ NATR Fri, Oct 1, 2010 8.97 8.97 8.56 8.80
4905 NASDAQ NATR Thu, Sep 30, 2010 8.77 8.95 8.66 8.94
4904 NASDAQ NATR Wed, Sep 29, 2010 8.72 8.83 8.47 8.58
4903 NASDAQ NATR Tue, Sep 28, 2010 8.60 8.76 8.52 8.76
4902 NASDAQ NATR Mon, Sep 27, 2010 8.75 8.75 8.55 8.57
4901 NASDAQ NATR Fri, Sep 24, 2010 8.61 8.74 8.50 8.69
4900 NASDAQ NATR Thu, Sep 23, 2010 8.87 8.93 8.41 8.50
4899 NASDAQ NATR Wed, Sep 22, 2010 8.80 9.02 8.76 8.87
4898 NASDAQ NATR Tue, Sep 21, 2010 8.88 9.03 8.84 8.90
4897 NASDAQ NATR Mon, Sep 20, 2010 8.97 9.02 8.85 9.00
4896 NASDAQ NATR Fri, Sep 17, 2010 8.98 9.05 8.77 8.96
4895 NASDAQ NATR Thu, Sep 16, 2010 9.19 9.24 8.70 8.84
4894 NASDAQ NATR Wed, Sep 15, 2010 8.76 9.30 8.62 9.05
4893 NASDAQ NATR Tue, Sep 14, 2010 9.42 9.82 8.62 8.79
4892 NASDAQ NATR Mon, Sep 13, 2010 9.63 9.79 9.20 9.47
4891 NASDAQ NATR Fri, Sep 10, 2010 8.87 9.88 8.86 9.45
4890 NASDAQ NATR Thu, Sep 9, 2010 8.62 9.40 8.62 8.82
4889 NASDAQ NATR Wed, Sep 8, 2010 9.18 9.27 8.68 8.87
4888 NASDAQ NATR Tue, Sep 7, 2010 9.55 9.55 8.61 9.19
4887 NASDAQ NATR Fri, Sep 3, 2010 9.75 9.79 9.02 9.58
4886 NASDAQ NATR Thu, Sep 2, 2010 9.09 10.19 9.00 9.67
4885 NASDAQ NATR Wed, Sep 1, 2010 8.91 9.24 8.41 9.14
4884 NASDAQ NATR Tue, Aug 31, 2010 8.97 9.25 8.79 8.79
4883 NASDAQ NATR Mon, Aug 30, 2010 8.87 9.30 8.67 8.75
4882 NASDAQ NATR Fri, Aug 27, 2010 8.84 8.98 8.53 8.93
4881 NASDAQ NATR Thu, Aug 26, 2010 8.43 9.40 8.43 8.76
4880 NASDAQ NATR Wed, Aug 25, 2010 8.53 8.53 8.15 8.39
4879 NASDAQ NATR Tue, Aug 24, 2010 8.61 8.83 8.13 8.53
4878 NASDAQ NATR Mon, Aug 23, 2010 8.35 8.90 8.35 8.38
4877 NASDAQ NATR Fri, Aug 20, 2010 8.65 8.95 8.26 8.33
4876 NASDAQ NATR Thu, Aug 19, 2010 8.60 9.02 8.60 8.63
4875 NASDAQ NATR Wed, Aug 18, 2010 9.32 9.90 8.48 8.67
4874 NASDAQ NATR Tue, Aug 17, 2010 9.49 10.20 9.20 9.35
4873 NASDAQ NATR Mon, Aug 16, 2010 8.77 9.66 8.77 9.48
4872 NASDAQ NATR Fri, Aug 13, 2010 8.52 9.25 8.52 8.79
4871 NASDAQ NATR Thu, Aug 12, 2010 8.48 9.29 8.44 8.56
4870 NASDAQ NATR Wed, Aug 11, 2010 8.67 9.25 8.28 8.53
4869 NASDAQ NATR Tue, Aug 10, 2010 9.00 9.08 8.72 8.77
4868 NASDAQ NATR Mon, Aug 9, 2010 9.08 9.42 9.00 9.07
4867 NASDAQ NATR Fri, Aug 6, 2010 9.02 9.38 9.01 9.01
4866 NASDAQ NATR Thu, Aug 5, 2010 9.21 9.45 8.96 9.06
4865 NASDAQ NATR Wed, Aug 4, 2010 8.33 9.25 8.30 9.17
4864 NASDAQ NATR Tue, Aug 3, 2010 8.65 9.58 8.25 8.26
4863 NASDAQ NATR Mon, Aug 2, 2010 8.29 9.00 8.29 8.66
4862 NASDAQ NATR Fri, Jul 30, 2010 8.42 8.56 8.20 8.20
4861 NASDAQ NATR Thu, Jul 29, 2010 8.42 8.97 8.35 8.56
4860 NASDAQ NATR Wed, Jul 28, 2010 8.92 9.03 8.36 8.37
4859 NASDAQ NATR Tue, Jul 27, 2010 9.00 9.07 8.68 8.99
4858 NASDAQ NATR Mon, Jul 26, 2010 9.00 9.00 8.62 9.00
4857 NASDAQ NATR Fri, Jul 23, 2010 8.94 9.08 8.25 9.00
4856 NASDAQ NATR Thu, Jul 22, 2010 8.60 9.09 8.59 9.00
4855 NASDAQ NATR Wed, Jul 21, 2010 9.00 9.10 8.51 8.51
4854 NASDAQ NATR Tue, Jul 20, 2010 8.33 9.03 8.05 9.03
4853 NASDAQ NATR Mon, Jul 19, 2010 8.65 8.80 8.07 8.47
4852 NASDAQ NATR Fri, Jul 16, 2010 8.28 8.68 8.28 8.30
4851 NASDAQ NATR Thu, Jul 15, 2010 8.93 9.00 8.27 8.32
4850 NASDAQ NATR Wed, Jul 14, 2010 9.16 9.16 8.59 8.69
4849 NASDAQ NATR Tue, Jul 13, 2010 8.45 9.00 8.13 9.00
4848 NASDAQ NATR Mon, Jul 12, 2010 8.84 8.84 8.14 8.39
4847 NASDAQ NATR Fri, Jul 9, 2010 8.95 8.99 8.63 8.88
4846 NASDAQ NATR Thu, Jul 8, 2010 9.11 9.20 8.71 9.00
4845 NASDAQ NATR Wed, Jul 7, 2010 8.63 9.08 8.63 9.05
4844 NASDAQ NATR Tue, Jul 6, 2010 8.90 9.05 8.57 8.58
4843 NASDAQ NATR Fri, Jul 2, 2010 8.69 8.99 8.69 8.85
4842 NASDAQ NATR Thu, Jul 1, 2010 8.36 8.87 8.36 8.70
4841 NASDAQ NATR Wed, Jun 30, 2010 8.40 8.63 8.05 8.37
4840 NASDAQ NATR Tue, Jun 29, 2010 9.69 9.69 8.27 8.28
4839 NASDAQ NATR Mon, Jun 28, 2010 11.16 11.16 9.59 9.83
4838 NASDAQ NATR Fri, Jun 25, 2010 11.35 11.72 10.40 11.15
4837 NASDAQ NATR Thu, Jun 24, 2010 12.10 12.50 11.11 11.35
4836 NASDAQ NATR Wed, Jun 23, 2010 11.22 11.76 11.18 11.68
4835 NASDAQ NATR Tue, Jun 22, 2010 11.74 11.74 11.30 11.31
4834 NASDAQ NATR Mon, Jun 21, 2010 12.49 12.49 11.17 11.45
4833 NASDAQ NATR Fri, Jun 18, 2010 10.95 12.48 10.95 12.45
4832 NASDAQ NATR Thu, Jun 17, 2010 10.13 11.50 10.13 11.20
4831 NASDAQ NATR Wed, Jun 16, 2010 9.99 10.08 9.86 10.02
4830 NASDAQ NATR Tue, Jun 15, 2010 10.35 10.35 9.82 10.11
4829 NASDAQ NATR Mon, Jun 14, 2010 10.51 10.99 10.24 10.28
4828 NASDAQ NATR Fri, Jun 11, 2010 10.09 11.00 10.09 10.95
4827 NASDAQ NATR Thu, Jun 10, 2010 10.02 10.15 9.85 10.09
4826 NASDAQ NATR Wed, Jun 9, 2010 10.07 10.67 9.83 9.83
4825 NASDAQ NATR Tue, Jun 8, 2010 10.66 10.77 9.77 9.90
4824 NASDAQ NATR Mon, Jun 7, 2010 10.39 10.97 10.00 10.90
4823 NASDAQ NATR Fri, Jun 4, 2010 10.37 10.99 10.17 10.40
4822 NASDAQ NATR Thu, Jun 3, 2010 10.00 10.37 9.81 10.37
4821 NASDAQ NATR Wed, Jun 2, 2010 10.76 10.76 10.02 10.28
4820 NASDAQ NATR Tue, Jun 1, 2010 10.90 11.30 10.80 10.86
4819 NASDAQ NATR Fri, May 28, 2010 11.26 11.26 10.79 11.26
4818 NASDAQ NATR Thu, May 27, 2010 11.26 11.37 10.75 11.35
4817 NASDAQ NATR Wed, May 26, 2010 11.07 11.55 10.78 10.88
4816 NASDAQ NATR Tue, May 25, 2010 11.05 11.80 11.01 11.73
4815 NASDAQ NATR Mon, May 24, 2010 11.02 12.38 10.83 12.12
4814 NASDAQ NATR Fri, May 21, 2010 12.09 12.18 10.39 11.04
4813 NASDAQ NATR Thu, May 20, 2010 12.26 12.38 11.00 12.25
4812 NASDAQ NATR Wed, May 19, 2010 12.49 12.50 11.66 12.45
4811 NASDAQ NATR Tue, May 18, 2010 12.40 12.94 12.26 12.52
4810 NASDAQ NATR Mon, May 17, 2010 12.25 13.00 12.18 12.18
4809 NASDAQ NATR Fri, May 14, 2010 12.24 12.73 12.09 12.50
4808 NASDAQ NATR Thu, May 13, 2010 12.92 12.98 12.26 12.40
4807 NASDAQ NATR Wed, May 12, 2010 12.46 13.24 12.43 12.72
4806 NASDAQ NATR Tue, May 11, 2010 11.19 13.55 11.19 12.35
4805 NASDAQ NATR Mon, May 10, 2010 11.50 11.93 10.89 11.37
4804 NASDAQ NATR Fri, May 7, 2010 11.82 12.02 10.80 11.22
4803 NASDAQ NATR Thu, May 6, 2010 12.75 13.70 9.91 11.99
4802 NASDAQ NATR Wed, May 5, 2010 12.46 14.74 11.93 13.10
4801 NASDAQ NATR Tue, May 4, 2010 13.87 14.20 11.55 12.59
4800 NASDAQ NATR Mon, May 3, 2010 13.50 14.57 13.26 14.13
4799 NASDAQ NATR Fri, Apr 30, 2010 13.13 13.50 13.13 13.49
4798 NASDAQ NATR Thu, Apr 29, 2010 12.30 13.14 12.30 13.04
4797 NASDAQ NATR Wed, Apr 28, 2010 12.20 12.47 11.49 12.40
4796 NASDAQ NATR Tue, Apr 27, 2010 12.30 12.30 12.14 12.28
4795 NASDAQ NATR Mon, Apr 26, 2010 11.62 12.50 11.62 12.30
4794 NASDAQ NATR Fri, Apr 23, 2010 12.13 12.33 12.13 12.25
4793 NASDAQ NATR Thu, Apr 22, 2010 11.93 12.56 11.93 11.97
4792 NASDAQ NATR Wed, Apr 21, 2010 11.94 12.00 11.50 12.00
4791 NASDAQ NATR Tue, Apr 20, 2010 10.52 12.00 10.40 12.00
4790 NASDAQ NATR Mon, Apr 19, 2010 11.80 11.94 10.58 11.12
4789 NASDAQ NATR Fri, Apr 16, 2010 12.00 12.70 11.29 11.71
4788 NASDAQ NATR Thu, Apr 15, 2010 10.04 12.40 10.04 12.11
4787 NASDAQ NATR Wed, Apr 14, 2010 10.54 11.00 10.03 10.56
4786 NASDAQ NATR Tue, Apr 13, 2010 9.75 10.50 9.75 10.50
4785 NASDAQ NATR Mon, Apr 12, 2010 9.21 10.00 9.21 10.00
4784 NASDAQ NATR Fri, Apr 9, 2010 9.34 9.49 9.00 9.40
4783 NASDAQ NATR Thu, Apr 8, 2010 9.32 9.32 9.13 9.30
4782 NASDAQ NATR Wed, Apr 7, 2010 8.68 9.25 8.61 9.25
4781 NASDAQ NATR Tue, Apr 6, 2010 8.50 9.34 8.48 9.34
4780 NASDAQ NATR Mon, Apr 5, 2010 8.25 8.50 8.24 8.50
4779 NASDAQ NATR Thu, Apr 1, 2010 8.45 8.48 8.21 8.45
4778 NASDAQ NATR Wed, Mar 31, 2010 8.27 8.50 8.27 8.33
4777 NASDAQ NATR Tue, Mar 30, 2010 8.30 8.99 8.15 8.58
4776 NASDAQ NATR Thu, Mar 25, 2010 8.25 8.28 8.25 8.28
4775 NASDAQ NATR Wed, Mar 24, 2010 8.29 8.29 8.29 8.29
4774 NASDAQ NATR Tue, Mar 23, 2010 8.40 8.40 8.40 8.40
4773 NASDAQ NATR Mon, Mar 22, 2010 8.50 8.75 8.50 8.50
4772 NASDAQ NATR Fri, Mar 19, 2010 7.96 8.55 7.96 8.26
4771 NASDAQ NATR Thu, Mar 18, 2010 8.30 8.77 8.08 8.70
4770 NASDAQ NATR Wed, Mar 17, 2010 8.55 8.80 8.25 8.29
4769 NASDAQ NATR Tue, Mar 16, 2010 8.57 8.89 8.26 8.58
4768 NASDAQ NATR Mon, Mar 15, 2010 8.57 8.57 8.09 8.40
4767 NASDAQ NATR Fri, Mar 12, 2010 8.85 8.85 8.22 8.51
4766 NASDAQ NATR Thu, Mar 11, 2010 8.40 8.90 8.26 8.34
4765 NASDAQ NATR Wed, Mar 10, 2010 8.48 9.01 8.27 8.39
4764 NASDAQ NATR Tue, Mar 9, 2010 8.51 8.90 8.31 8.50
4763 NASDAQ NATR Mon, Mar 8, 2010 8.55 8.86 8.31 8.36
4762 NASDAQ NATR Fri, Mar 5, 2010 8.18 8.60 7.96 8.17
4761 NASDAQ NATR Thu, Mar 4, 2010 8.25 8.38 8.18 8.38
4760 NASDAQ NATR Wed, Mar 3, 2010 8.47 8.59 8.05 8.51
4759 NASDAQ NATR Tue, Mar 2, 2010 8.45 8.60 8.22 8.48
4758 NASDAQ NATR Mon, Mar 1, 2010 8.58 8.60 8.40 8.60
4757 NASDAQ NATR Fri, Feb 26, 2010 8.22 8.25 8.21 8.25
4756 NASDAQ NATR Thu, Feb 25, 2010 8.26 8.76 8.06 8.28
4755 NASDAQ NATR Wed, Feb 24, 2010 8.36 8.91 8.36 8.90
4754 NASDAQ NATR Tue, Feb 23, 2010 8.85 8.90 8.31 8.35
4753 NASDAQ NATR Fri, Feb 19, 2010 8.89 8.96 8.89 8.96
4752 NASDAQ NATR Thu, Feb 18, 2010 8.04 8.85 8.04 8.85
4751 NASDAQ NATR Wed, Feb 17, 2010 8.35 8.35 8.35 8.35
4750 NASDAQ NATR Tue, Feb 16, 2010 8.35 8.99 8.00 8.58
4749 NASDAQ NATR Fri, Feb 12, 2010 8.10 8.90 7.76 8.90
4748 NASDAQ NATR Thu, Feb 11, 2010 8.66 8.66 8.24 8.25
4747 NASDAQ NATR Wed, Feb 10, 2010 8.72 8.72 8.72 8.72
4746 NASDAQ NATR Tue, Feb 9, 2010 8.15 9.01 8.14 8.91
4745 NASDAQ NATR Mon, Feb 8, 2010 8.98 9.10 8.83 8.93
4744 NASDAQ NATR Fri, Feb 5, 2010 8.79 9.18 8.50 9.18
4743 NASDAQ NATR Thu, Feb 4, 2010 8.48 9.00 8.12 8.99
4742 NASDAQ NATR Wed, Feb 3, 2010 8.75 9.05 8.49 9.02
4741 NASDAQ NATR Tue, Feb 2, 2010 7.94 8.85 7.94 8.69
4740 NASDAQ NATR Mon, Feb 1, 2010 8.15 8.69 7.78 8.37
4739 NASDAQ NATR Fri, Jan 29, 2010 8.98 8.98 8.26 8.26
4738 NASDAQ NATR Thu, Jan 28, 2010 8.65 8.97 8.38 8.97
4737 NASDAQ NATR Wed, Jan 27, 2010 8.07 8.68 8.07 8.63
4736 NASDAQ NATR Tue, Jan 26, 2010 7.62 8.04 7.55 8.04
4735 NASDAQ NATR Mon, Jan 25, 2010 7.63 7.63 7.63 7.63
4734 NASDAQ NATR Fri, Jan 22, 2010 7.90 7.90 7.90 7.90
4733 NASDAQ NATR Tue, Jan 19, 2010 8.00 8.30 7.76 7.76
4732 NASDAQ NATR Fri, Jan 15, 2010 8.01 8.01 8.00 8.00
4731 NASDAQ NATR Thu, Jan 14, 2010 8.30 8.30 8.15 8.15
4730 NASDAQ NATR Wed, Jan 13, 2010 8.30 8.30 8.05 8.05
4729 NASDAQ NATR Mon, Jan 11, 2010 8.09 8.30 8.00 8.30
4728 NASDAQ NATR Fri, Jan 8, 2010 8.15 8.30 8.15 8.30
4727 NASDAQ NATR Thu, Jan 7, 2010 8.37 8.58 8.20 8.20
4726 NASDAQ NATR Wed, Jan 6, 2010 8.00 8.31 8.00 8.31
4725 NASDAQ NATR Tue, Jan 5, 2010 8.32 8.32 8.00 8.02
4724 NASDAQ NATR Mon, Jan 4, 2010 8.29 8.29 8.06 8.06
4723 NASDAQ NATR Thu, Dec 31, 2009 8.54 8.54 8.54 8.54
4722 NASDAQ NATR Wed, Dec 30, 2009 8.50 8.80 8.50 8.67
4721 NASDAQ NATR Tue, Dec 29, 2009 8.92 9.60 8.89 8.89
4720 NASDAQ NATR Mon, Dec 28, 2009 9.23 9.35 9.00 9.35
4719 NASDAQ NATR Wed, Dec 23, 2009 9.34 9.50 9.26 9.40
4718 NASDAQ NATR Tue, Dec 22, 2009 9.43 9.43 9.06 9.06
4717 NASDAQ NATR Mon, Dec 21, 2009 9.05 9.40 9.00 9.02
4716 NASDAQ NATR Fri, Dec 18, 2009 8.87 9.18 8.87 9.07
4715 NASDAQ NATR Thu, Dec 17, 2009 9.04 9.06 8.14 9.05
4714 NASDAQ NATR Wed, Dec 16, 2009 7.75 9.10 7.75 8.32
4713 NASDAQ NATR Tue, Dec 15, 2009 8.00 8.48 7.70 7.71
4712 NASDAQ NATR Mon, Dec 14, 2009 8.39 8.48 7.89 7.89
4711 NASDAQ NATR Fri, Dec 11, 2009 8.48 8.51 8.47 8.47
4710 NASDAQ NATR Thu, Dec 10, 2009 8.74 8.80 8.50 8.80
4709 NASDAQ NATR Wed, Dec 9, 2009 8.01 8.95 8.00 8.85
4708 NASDAQ NATR Tue, Dec 8, 2009 8.00 9.01 7.99 8.00
4707 NASDAQ NATR Mon, Dec 7, 2009 7.65 8.00 7.65 8.00
4706 NASDAQ NATR Fri, Dec 4, 2009 7.75 7.75 7.51 7.51
4705 NASDAQ NATR Thu, Dec 3, 2009 7.75 7.75 7.75 7.75
4704 NASDAQ NATR Wed, Dec 2, 2009 7.98 8.01 7.88 8.00
4703 NASDAQ NATR Tue, Dec 1, 2009 7.45 8.01 7.44 8.01
4702 NASDAQ NATR Mon, Nov 30, 2009 7.28 7.28 7.00 7.25
4701 NASDAQ NATR Wed, Nov 25, 2009 7.57 8.00 7.56 8.00
4700 NASDAQ NATR Tue, Nov 24, 2009 7.03 7.60 7.03 7.60
4699 NASDAQ NATR Mon, Nov 23, 2009 7.10 7.60 7.00 7.59
4698 NASDAQ NATR Fri, Nov 20, 2009 7.50 7.60 7.00 7.01
4697 NASDAQ NATR Thu, Nov 19, 2009 7.40 7.60 7.02 7.60
4696 NASDAQ NATR Wed, Nov 18, 2009 6.44 7.12 6.44 7.12
4695 NASDAQ NATR Tue, Nov 17, 2009 6.13 6.72 6.13 6.72
4694 NASDAQ NATR Mon, Nov 16, 2009 6.39 6.72 5.96 6.71
4693 NASDAQ NATR Mon, Nov 9, 2009 7.11 7.55 7.11 7.49
4692 NASDAQ NATR Fri, Nov 6, 2009 8.25 8.25 7.06 7.99
4691 NASDAQ NATR Thu, Nov 5, 2009 7.51 8.26 7.51 8.26
4690 NASDAQ NATR Wed, Nov 4, 2009 8.14 8.24 8.02 8.02
4689 NASDAQ NATR Tue, Nov 3, 2009 8.21 8.50 8.20 8.40
4688 NASDAQ NATR Mon, Nov 2, 2009 8.96 8.96 8.96 8.96
4687 NASDAQ NATR Fri, Oct 30, 2009 8.14 8.52 8.14 8.51
4686 NASDAQ NATR Wed, Oct 28, 2009 9.10 9.10 8.11 8.16
4685 NASDAQ NATR Tue, Oct 27, 2009 8.04 9.10 8.04 9.10
4684 NASDAQ NATR Mon, Oct 26, 2009 9.10 9.10 8.00 8.90
4683 NASDAQ NATR Fri, Oct 23, 2009 7.90 9.32 7.89 9.10
4682 NASDAQ NATR Thu, Oct 22, 2009 5.84 8.00 5.84 7.92
4681 NASDAQ NATR Wed, Oct 21, 2009 5.75 6.25 5.75 6.25
4680 NASDAQ NATR Tue, Oct 20, 2009 5.77 5.77 5.75 5.75
4679 NASDAQ NATR Mon, Oct 19, 2009 5.75 5.75 5.75 5.75
4678 NASDAQ NATR Fri, Oct 16, 2009 5.75 5.76 5.75 5.75
4677 NASDAQ NATR Thu, Oct 15, 2009 5.80 6.00 5.80 6.00
4676 NASDAQ NATR Wed, Oct 14, 2009 6.40 6.40 5.85 6.10
4675 NASDAQ NATR Tue, Oct 13, 2009 5.85 6.13 5.75 6.13
4674 NASDAQ NATR Mon, Oct 12, 2009 5.40 6.20 5.40 5.75
4673 NASDAQ NATR Fri, Oct 9, 2009 5.36 5.60 5.36 5.45
4672 NASDAQ NATR Thu, Oct 8, 2009 5.90 5.98 5.45 5.95
4671 NASDAQ NATR Wed, Oct 7, 2009 5.40 5.40 5.35 5.35
4670 NASDAQ NATR Tue, Oct 6, 2009 5.35 5.90 5.35 5.90
4669 NASDAQ NATR Mon, Oct 5, 2009 5.35 5.35 5.35 5.35
4668 NASDAQ NATR Fri, Oct 2, 2009 5.35 5.35 4.90 5.35
4667 NASDAQ NATR Thu, Oct 1, 2009 5.35 5.35 5.35 5.35
4666 NASDAQ NATR Wed, Sep 30, 2009 5.35 5.35 4.90 5.35
4665 NASDAQ NATR Mon, Sep 28, 2009 5.35 5.35 5.35 5.35
4664 NASDAQ NATR Fri, Sep 25, 2009 5.35 5.35 5.35 5.35
4663 NASDAQ NATR Wed, Sep 23, 2009 5.35 5.35 5.35 5.35
4662 NASDAQ NATR Tue, Sep 22, 2009 5.35 5.35 5.35 5.35
4661 NASDAQ NATR Fri, Sep 18, 2009 5.35 5.35 5.35 5.35
4660 NASDAQ NATR Tue, Sep 15, 2009 5.35 5.35 5.35 5.35
4659 NASDAQ NATR Mon, Sep 14, 2009 5.35 5.35 5.25 5.30
4658 NASDAQ NATR Fri, Sep 11, 2009 5.35 5.35 5.35 5.35
4657 NASDAQ NATR Tue, Sep 8, 2009 5.35 5.35 5.35 5.35
4656 NASDAQ NATR Fri, Sep 4, 2009 5.35 5.35 5.35 5.35
4655 NASDAQ NATR Wed, Sep 2, 2009 5.35 5.35 5.35 5.35
4654 NASDAQ NATR Tue, Sep 1, 2009 5.45 5.45 5.45 5.45
4653 NASDAQ NATR Mon, Aug 31, 2009 5.90 5.90 5.45 5.45
4652 NASDAQ NATR Fri, Aug 28, 2009 5.35 5.35 5.35 5.35
4651 NASDAQ NATR Thu, Aug 27, 2009 5.35 5.35 5.35 5.35
4650 NASDAQ NATR Wed, Aug 26, 2009 5.50 5.64 5.40 5.64
4649 NASDAQ NATR Tue, Aug 25, 2009 5.35 5.35 5.35 5.35
4648 NASDAQ NATR Mon, Aug 24, 2009 5.35 5.50 5.35 5.50
4647 NASDAQ NATR Fri, Aug 21, 2009 5.40 5.50 5.35 5.50
4646 NASDAQ NATR Thu, Aug 20, 2009 5.25 5.45 5.25 5.35
4645 NASDAQ NATR Tue, Aug 18, 2009 5.10 5.10 5.10 5.10
4644 NASDAQ NATR Mon, Aug 17, 2009 5.54 5.54 5.05 5.45
4643 NASDAQ NATR Fri, Aug 14, 2009 5.00 5.05 5.00 5.05
4642 NASDAQ NATR Thu, Aug 13, 2009 5.10 5.15 4.90 4.90
4641 NASDAQ NATR Wed, Aug 12, 2009 5.25 5.25 5.25 5.25
4640 NASDAQ NATR Tue, Aug 11, 2009 5.25 5.53 5.25 5.25
4639 NASDAQ NATR Mon, Aug 10, 2009 5.20 5.50 5.20 5.50
4638 NASDAQ NATR Fri, Aug 7, 2009 4.80 5.50 4.80 5.50
4637 NASDAQ NATR Thu, Aug 6, 2009 5.00 5.10 5.00 5.10
4636 NASDAQ NATR Wed, Aug 5, 2009 5.10 5.24 5.10 5.24
4635 NASDAQ NATR Tue, Aug 4, 2009 5.10 5.25 5.10 5.25
4634 NASDAQ NATR Mon, Aug 3, 2009 5.00 5.00 5.00 5.00
4633 NASDAQ NATR Fri, Jul 31, 2009 5.00 5.25 5.00 5.00
4632 NASDAQ NATR Thu, Jul 30, 2009 4.90 5.20 4.90 5.00
4631 NASDAQ NATR Wed, Jul 29, 2009 4.90 4.90 4.90 4.90
4630 NASDAQ NATR Tue, Jul 28, 2009 5.00 5.00 4.90 4.90
4629 NASDAQ NATR Mon, Jul 27, 2009 5.25 5.25 5.00 5.25
4628 NASDAQ NATR Fri, Jul 24, 2009 5.25 5.25 5.20 5.20
4627 NASDAQ NATR Thu, Jul 23, 2009 5.25 5.25 4.75 4.75
4626 NASDAQ NATR Wed, Jul 22, 2009 5.25 5.25 5.25 5.25
4625 NASDAQ NATR Tue, Jul 21, 2009 5.25 5.25 5.25 5.25
4624 NASDAQ NATR Mon, Jul 20, 2009 5.26 5.26 5.25 5.25
4623 NASDAQ NATR Fri, Jul 17, 2009 5.25 5.25 5.25 5.25
4622 NASDAQ NATR Thu, Jul 16, 2009 5.25 5.25 5.25 5.25
4621 NASDAQ NATR Wed, Jul 15, 2009 5.25 5.25 5.25 5.25
4620 NASDAQ NATR Tue, Jul 14, 2009 5.25 5.25 5.25 5.25
4619 NASDAQ NATR Fri, Jul 10, 2009 5.00 5.25 5.00 5.25
4618 NASDAQ NATR Thu, Jul 9, 2009 5.50 5.50 5.30 5.30
4617 NASDAQ NATR Wed, Jul 8, 2009 5.25 5.50 5.25 5.31
4616 NASDAQ NATR Tue, Jul 7, 2009 5.25 5.25 5.25 5.25
4615 NASDAQ NATR Wed, Jul 1, 2009 5.26 5.26 5.26 5.26
4614 NASDAQ NATR Tue, Jun 30, 2009 5.00 5.25 5.00 5.25
4613 NASDAQ NATR Mon, Jun 29, 2009 5.50 5.50 5.50 5.50
4612 NASDAQ NATR Fri, Jun 26, 2009 5.25 5.25 5.25 5.25
4611 NASDAQ NATR Thu, Jun 25, 2009 3.00 3.25 3.00 3.25
4610 NASDAQ NATR Wed, Jan 21, 2009 4.95 4.95 4.95 4.95
4609 NASDAQ NATR Tue, Jan 20, 2009 5.00 5.25 5.00 5.00
4608 NASDAQ NATR Fri, Jan 16, 2009 5.25 5.25 5.25 5.25
4607 NASDAQ NATR Thu, Jan 15, 2009 4.95 4.95 4.95 4.95
4606 NASDAQ NATR Wed, Jan 14, 2009 5.05 5.05 5.05 5.05
4605 NASDAQ NATR Tue, Jan 13, 2009 4.75 5.10 4.75 5.10
4604 NASDAQ NATR Mon, Jan 12, 2009 5.05 5.05 5.05 5.05
4603 NASDAQ NATR Fri, Jan 9, 2009 5.05 5.26 5.05 5.05
4602 NASDAQ NATR Thu, Jan 8, 2009 5.25 5.26 5.25 5.25
4601 NASDAQ NATR Wed, Jan 7, 2009 5.25 5.25 5.25 5.25
4600 NASDAQ NATR Tue, Jan 6, 2009 5.05 5.25 5.05 5.25
4599 NASDAQ NATR Mon, Jan 5, 2009 5.50 5.50 5.00 5.08
4598 NASDAQ NATR Fri, Jan 2, 2009 5.50 5.50 5.50 5.50
4597 NASDAQ NATR Wed, Dec 31, 2008 5.25 6.10 4.91 6.10
4596 NASDAQ NATR Tue, Dec 30, 2008 5.00 5.00 4.95 4.95
4595 NASDAQ NATR Mon, Dec 29, 2008 5.25 5.25 5.00 5.00
4594 NASDAQ NATR Fri, Dec 26, 2008 5.40 5.45 5.25 5.25
4593 NASDAQ NATR Wed, Dec 24, 2008 5.40 5.45 5.40 5.40
4592 NASDAQ NATR Tue, Dec 23, 2008 5.50 5.50 5.40 5.40
4591 NASDAQ NATR Mon, Dec 22, 2008 5.50 5.50 5.27 5.40
4590 NASDAQ NATR Fri, Dec 19, 2008 5.75 5.75 5.75 5.75
4589 NASDAQ NATR Thu, Dec 18, 2008 5.27 5.27 5.27 5.27
4588 NASDAQ NATR Wed, Dec 17, 2008 5.75 5.75 5.27 5.75
4587 NASDAQ NATR Tue, Dec 16, 2008 5.75 6.60 5.75 6.25
4586 NASDAQ NATR Mon, Dec 15, 2008 5.75 5.78 5.50 5.75
4585 NASDAQ NATR Fri, Dec 12, 2008 5.51 5.85 5.40 5.85
4584 NASDAQ NATR Wed, Dec 10, 2008 4.00 6.00 4.00 6.00
4583 NASDAQ NATR Tue, Dec 9, 2008 5.50 6.00 5.50 6.00
4582 NASDAQ NATR Mon, Dec 8, 2008 6.00 6.00 5.84 6.00
4581 NASDAQ NATR Fri, Dec 5, 2008 6.16 6.16 6.00 6.00
4580 NASDAQ NATR Thu, Dec 4, 2008 6.25 6.30 6.25 6.25
4579 NASDAQ NATR Wed, Dec 3, 2008 6.25 6.30 6.25 6.25
4578 NASDAQ NATR Tue, Dec 2, 2008 6.25 6.25 6.25 6.25
4577 NASDAQ NATR Fri, Nov 28, 2008 6.49 6.50 6.49 6.49
4576 NASDAQ NATR Wed, Nov 26, 2008 5.82 6.50 5.82 6.49
4575 NASDAQ NATR Tue, Nov 25, 2008 6.25 6.25 6.00 6.10
4574 NASDAQ NATR Mon, Nov 24, 2008 6.00 6.77 6.00 6.25
4573 NASDAQ NATR Fri, Nov 21, 2008 7.00 7.00 6.00 6.05
4572 NASDAQ NATR Thu, Nov 20, 2008 6.05 7.00 6.05 6.15
4571 NASDAQ NATR Wed, Nov 19, 2008 6.49 6.50 6.49 6.50
4570 NASDAQ NATR Tue, Nov 18, 2008 6.30 6.30 6.30 6.30
4569 NASDAQ NATR Mon, Nov 17, 2008 6.40 6.40 6.40 6.40
4568 NASDAQ NATR Fri, Nov 14, 2008 6.90 7.25 6.20 6.31
4567 NASDAQ NATR Thu, Nov 13, 2008 6.21 6.31 6.21 6.30
4566 NASDAQ NATR Wed, Nov 12, 2008 6.25 7.00 6.25 7.00
4565 NASDAQ NATR Mon, Nov 10, 2008 6.06 7.00 6.06 7.00
4564 NASDAQ NATR Fri, Nov 7, 2008 7.00 7.00 6.05 6.95
4563 NASDAQ NATR Thu, Nov 6, 2008 6.05 7.50 6.05 7.50
4562 NASDAQ NATR Tue, Nov 4, 2008 7.00 7.00 7.00 7.00
4561 NASDAQ NATR Mon, Nov 3, 2008 7.50 7.50 5.82 7.00
4560 NASDAQ NATR Fri, Oct 31, 2008 6.51 8.40 6.50 7.90
4559 NASDAQ NATR Mon, Oct 27, 2008 4.80 7.50 4.80 7.50
4558 NASDAQ NATR Fri, Oct 24, 2008 6.45 7.50 5.85 7.50
4557 NASDAQ NATR Thu, Oct 23, 2008 6.30 6.75 6.30 6.75
4556 NASDAQ NATR Wed, Oct 22, 2008 6.12 7.00 6.10 7.00
4555 NASDAQ NATR Mon, Oct 20, 2008 7.90 7.90 6.10 7.01
4554 NASDAQ NATR Fri, Oct 17, 2008 7.00 7.50 6.00 7.50
4553 NASDAQ NATR Thu, Oct 16, 2008 7.05 8.00 6.00 7.10
4552 NASDAQ NATR Wed, Oct 15, 2008 5.50 7.80 4.00 7.25
4551 NASDAQ NATR Tue, Oct 14, 2008 6.00 7.00 5.50 7.00
4550 NASDAQ NATR Mon, Oct 13, 2008 5.75 6.00 5.75 6.00
4549 NASDAQ NATR Fri, Oct 10, 2008 6.25 6.25 5.50 6.00
4548 NASDAQ NATR Thu, Oct 9, 2008 6.25 6.25 6.25 6.25
4547 NASDAQ NATR Wed, Oct 8, 2008 6.50 6.50 6.00 6.25
4546 NASDAQ NATR Tue, Oct 7, 2008 6.50 7.75 6.50 6.50
4545 NASDAQ NATR Fri, Oct 3, 2008 7.00 7.00 6.50 6.50
4544 NASDAQ NATR Thu, Oct 2, 2008 5.91 7.75 5.91 7.75
4543 NASDAQ NATR Wed, Oct 1, 2008 6.60 8.30 5.50 8.30
4542 NASDAQ NATR Tue, Sep 30, 2008 7.00 8.30 6.95 8.30
4541 NASDAQ NATR Mon, Sep 29, 2008 7.05 7.05 7.00 7.05
4540 NASDAQ NATR Fri, Sep 26, 2008 7.35 7.35 7.05 7.30
4539 NASDAQ NATR Thu, Sep 25, 2008 7.35 7.35 7.15 7.15
4538 NASDAQ NATR Wed, Sep 24, 2008 7.30 7.30 7.30 7.30
4537 NASDAQ NATR Tue, Sep 23, 2008 7.30 7.35 7.30 7.35
4536 NASDAQ NATR Thu, Sep 18, 2008 7.30 8.30 7.30 8.30
4535 NASDAQ NATR Wed, Sep 17, 2008 7.30 7.50 7.30 7.50
4534 NASDAQ NATR Tue, Sep 16, 2008 8.45 8.50 7.30 7.30
4533 NASDAQ NATR Mon, Sep 15, 2008 7.75 8.40 7.55 8.40
4532 NASDAQ NATR Fri, Sep 12, 2008 7.50 7.50 7.50 7.50
4531 NASDAQ NATR Thu, Sep 11, 2008 7.20 7.50 7.20 7.50
4530 NASDAQ NATR Wed, Sep 10, 2008 7.20 8.30 7.20 8.30
4529 NASDAQ NATR Tue, Sep 9, 2008 7.55 8.30 7.50 8.00
4528 NASDAQ NATR Fri, Sep 5, 2008 7.50 7.50 7.50 7.50
4527 NASDAQ NATR Thu, Sep 4, 2008 8.50 8.50 7.55 8.00
4526 NASDAQ NATR Wed, Sep 3, 2008 7.35 7.50 7.35 7.50
4525 NASDAQ NATR Tue, Sep 2, 2008 7.35 7.55 7.35 7.55
4524 NASDAQ NATR Thu, Aug 28, 2008 7.05 7.30 7.05 7.30
4523 NASDAQ NATR Wed, Aug 27, 2008 7.00 7.00 7.00 7.00
4522 NASDAQ NATR Tue, Aug 26, 2008 7.00 7.00 7.00 7.00
4521 NASDAQ NATR Mon, Aug 25, 2008 7.20 7.40 6.95 6.95
4520 NASDAQ NATR Fri, Aug 22, 2008 7.01 7.50 7.01 7.50
4519 NASDAQ NATR Thu, Aug 21, 2008 7.00 7.25 7.00 7.25
4518 NASDAQ NATR Wed, Aug 20, 2008 7.25 7.25 7.25 7.25
4517 NASDAQ NATR Tue, Aug 19, 2008 7.25 7.25 7.25 7.25
4516 NASDAQ NATR Mon, Aug 18, 2008 7.00 7.00 7.00 7.00
4515 NASDAQ NATR Fri, Aug 15, 2008 6.75 7.00 6.75 7.00
4514 NASDAQ NATR Thu, Aug 14, 2008 7.00 7.00 7.00 7.00
4513 NASDAQ NATR Wed, Aug 13, 2008 6.99 6.99 6.99 6.99
4512 NASDAQ NATR Tue, Aug 12, 2008 6.75 7.04 6.60 7.00
4511 NASDAQ NATR Fri, Aug 8, 2008 6.60 6.60 6.53 6.53
4510 NASDAQ NATR Thu, Aug 7, 2008 6.53 6.60 6.53 6.60
4509 NASDAQ NATR Wed, Aug 6, 2008 6.53 6.55 6.53 6.53
4508 NASDAQ NATR Tue, Aug 5, 2008 6.53 7.05 6.53 7.05
4507 NASDAQ NATR Mon, Aug 4, 2008 6.50 6.50 6.50 6.50
4506 NASDAQ NATR Fri, Aug 1, 2008 6.80 7.05 6.40 6.40
4505 NASDAQ NATR Thu, Jul 31, 2008 7.50 7.50 6.80 6.80
4504 NASDAQ NATR Mon, Jul 28, 2008 7.05 7.05 7.04 7.04
4503 NASDAQ NATR Fri, Jul 25, 2008 7.02 7.02 7.02 7.02
4502 NASDAQ NATR Wed, Jul 23, 2008 7.00 7.50 7.00 7.02
4501 NASDAQ NATR Mon, Jul 21, 2008 6.50 8.50 6.50 8.50
4500 NASDAQ NATR Fri, Jul 18, 2008 6.75 7.00 6.75 7.00
4499 NASDAQ NATR Thu, Jul 17, 2008 6.75 7.00 6.75 7.00
4498 NASDAQ NATR Wed, Jul 16, 2008 9.00 9.00 8.00 8.75
4497 NASDAQ NATR Tue, Jul 15, 2008 6.83 9.00 6.40 6.60
4496 NASDAQ NATR Mon, Jul 14, 2008 6.83 6.83 6.83 6.83
4495 NASDAQ NATR Thu, Jul 10, 2008 6.60 6.70 6.60 6.70
4494 NASDAQ NATR Tue, Jul 8, 2008 6.40 7.00 6.40 7.00
4493 NASDAQ NATR Mon, Jul 7, 2008 7.00 7.00 7.00 7.00
4492 NASDAQ NATR Wed, Jul 2, 2008 6.35 7.00 6.35 7.00
4491 NASDAQ NATR Tue, Jul 1, 2008 6.73 6.73 6.73 6.73
4490 NASDAQ NATR Mon, Jun 30, 2008 7.00 7.00 6.75 6.75
4489 NASDAQ NATR Fri, Jun 27, 2008 6.83 7.00 6.60 6.60
4488 NASDAQ NATR Thu, Jun 26, 2008 7.00 7.00 6.80 6.80
4487 NASDAQ NATR Wed, Jun 25, 2008 7.00 7.05 7.00 7.05
4486 NASDAQ NATR Tue, Jun 24, 2008 7.20 7.20 7.00 7.00
4485 NASDAQ NATR Mon, Jun 23, 2008 7.20 7.20 7.20 7.20
4484 NASDAQ NATR Fri, Jun 20, 2008 7.20 7.20 7.20 7.20
4483 NASDAQ NATR Thu, Jun 19, 2008 7.20 7.40 7.20 7.35
4482 NASDAQ NATR Wed, Jun 18, 2008 7.50 7.50 7.00 7.20
4481 NASDAQ NATR Tue, Jun 17, 2008 7.60 7.60 7.50 7.50
4480 NASDAQ NATR Mon, Jun 16, 2008 9.00 9.00 7.50 9.00
4479 NASDAQ NATR Thu, Jun 12, 2008 7.50 7.50 7.50 7.50
4478 NASDAQ NATR Wed, Jun 11, 2008 7.75 7.75 7.50 7.50
4477 NASDAQ NATR Tue, Jun 10, 2008 7.75 7.75 7.75 7.75
4476 NASDAQ NATR Mon, Jun 9, 2008 7.75 7.75 7.75 7.75
4475 NASDAQ NATR Thu, Jun 5, 2008 7.75 8.00 7.75 8.00
4474 NASDAQ NATR Wed, Jun 4, 2008 7.75 7.75 7.75 7.75
4473 NASDAQ NATR Tue, Jun 3, 2008 7.75 7.85 7.75 7.85
4472 NASDAQ NATR Mon, Jun 2, 2008 7.75 8.20 7.75 8.20
4471 NASDAQ NATR Fri, May 30, 2008 7.75 8.85 7.75 8.00
4470 NASDAQ NATR Thu, May 29, 2008 7.60 8.00 7.60 8.00
4469 NASDAQ NATR Wed, May 28, 2008 7.80 7.80 7.40 7.60
4468 NASDAQ NATR Tue, May 27, 2008 7.50 8.00 7.50 8.00
4467 NASDAQ NATR Fri, May 23, 2008 8.00 8.00 8.00 8.00
4466 NASDAQ NATR Thu, May 22, 2008 8.10 8.25 8.00 8.10
4465 NASDAQ NATR Wed, May 21, 2008 8.65 8.65 8.45 8.45
4464 NASDAQ NATR Tue, May 20, 2008 8.75 8.75 8.65 8.65
4463 NASDAQ NATR Mon, May 19, 2008 8.45 8.45 8.45 8.45
4462 NASDAQ NATR Fri, May 16, 2008 8.45 8.75 8.45 8.75
4461 NASDAQ NATR Thu, May 15, 2008 7.40 8.45 7.40 8.45
4460 NASDAQ NATR Wed, May 14, 2008 8.50 8.50 8.50 8.50
4459 NASDAQ NATR Tue, May 13, 2008 8.50 9.25 8.50 8.95
4458 NASDAQ NATR Mon, May 12, 2008 8.50 8.50 8.50 8.50
4457 NASDAQ NATR Fri, May 9, 2008 8.50 8.50 8.50 8.50
4456 NASDAQ NATR Thu, May 8, 2008 8.50 8.50 8.50 8.50
4455 NASDAQ NATR Wed, May 7, 2008 8.50 8.50 8.50 8.50
4454 NASDAQ NATR Tue, May 6, 2008 8.50 8.50 8.50 8.50
4453 NASDAQ NATR Mon, May 5, 2008 9.00 9.00 8.50 9.00
4452 NASDAQ NATR Fri, May 2, 2008 8.50 9.00 8.50 9.00
4451 NASDAQ NATR Thu, May 1, 2008 8.25 8.50 8.25 8.50
4450 NASDAQ NATR Wed, Apr 30, 2008 8.25 8.50 8.25 8.50
4449 NASDAQ NATR Tue, Apr 29, 2008 8.25 8.25 8.25 8.25
4448 NASDAQ NATR Mon, Apr 28, 2008 8.25 8.40 8.25 8.40
4447 NASDAQ NATR Fri, Apr 25, 2008 8.25 8.25 8.25 8.25
4446 NASDAQ NATR Thu, Apr 24, 2008 8.40 8.50 8.30 8.30
4445 NASDAQ NATR Wed, Apr 23, 2008 8.40 8.40 8.40 8.40
4444 NASDAQ NATR Tue, Apr 22, 2008 8.40 8.40 8.12 8.12
4443 NASDAQ NATR Mon, Apr 21, 2008 8.53 8.65 8.50 8.50
4442 NASDAQ NATR Fri, Apr 18, 2008 8.50 8.50 8.50 8.50
4441 NASDAQ NATR Thu, Apr 17, 2008 9.00 9.00 8.50 8.50
4440 NASDAQ NATR Wed, Apr 16, 2008 9.00 9.00 9.00 9.00
4439 NASDAQ NATR Tue, Apr 15, 2008 9.00 9.00 9.00 9.00
4438 NASDAQ NATR Fri, Apr 11, 2008 8.45 9.25 8.45 9.25
4437 NASDAQ NATR Thu, Apr 10, 2008 8.50 8.50 8.50 8.50
4436 NASDAQ NATR Wed, Apr 9, 2008 8.50 8.50 8.50 8.50
4435 NASDAQ NATR Tue, Apr 8, 2008 8.50 8.50 8.50 8.50
4434 NASDAQ NATR Mon, Apr 7, 2008 8.98 9.05 8.85 8.85
4433 NASDAQ NATR Fri, Apr 4, 2008 8.51 8.51 8.50 8.50
4432 NASDAQ NATR Thu, Apr 3, 2008 8.40 9.00 8.40 9.00
4431 NASDAQ NATR Wed, Apr 2, 2008 8.40 9.00 8.40 9.00
4430 NASDAQ NATR Tue, Apr 1, 2008 9.00 9.00 9.00 9.00
4429 NASDAQ NATR Mon, Mar 31, 2008 8.60 9.50 8.60 9.50
4428 NASDAQ NATR Fri, Mar 28, 2008 8.50 8.55 8.50 8.53
4427 NASDAQ NATR Thu, Mar 27, 2008 8.50 8.50 8.50 8.50
4426 NASDAQ NATR Wed, Mar 26, 2008 8.50 8.50 8.10 8.10
4425 NASDAQ NATR Tue, Mar 25, 2008 7.70 8.50 7.70 8.50
4424 NASDAQ NATR Mon, Mar 24, 2008 8.50 8.50 7.65 7.65
4423 NASDAQ NATR Thu, Mar 20, 2008 7.01 8.50 7.01 8.50
4422 NASDAQ NATR Wed, Mar 19, 2008 8.36 8.36 8.36 8.36
4421 NASDAQ NATR Tue, Mar 18, 2008 8.50 8.50 8.50 8.50
4420 NASDAQ NATR Mon, Mar 17, 2008 8.55 8.55 8.40 8.41
4419 NASDAQ NATR Fri, Mar 14, 2008 8.50 10.50 8.41 8.41
4418 NASDAQ NATR Thu, Mar 13, 2008 8.50 8.55 8.50 8.55
4417 NASDAQ NATR Wed, Mar 12, 2008 8.50 8.50 8.50 8.50
4416 NASDAQ NATR Tue, Mar 11, 2008 8.50 8.50 8.36 8.36
4415 NASDAQ NATR Mon, Mar 10, 2008 8.60 8.60 8.36 8.36
4414 NASDAQ NATR Fri, Mar 7, 2008 8.36 8.40 8.36 8.40
4413 NASDAQ NATR Thu, Mar 6, 2008 8.70 8.70 8.36 8.36
4412 NASDAQ NATR Wed, Mar 5, 2008 8.90 8.90 8.36 8.36
4411 NASDAQ NATR Tue, Mar 4, 2008 8.70 8.70 8.70 8.70
4410 NASDAQ NATR Mon, Mar 3, 2008 9.00 9.40 8.56 8.70
4409 NASDAQ NATR Fri, Feb 29, 2008 9.00 9.00 8.95 9.00
4408 NASDAQ NATR Thu, Feb 28, 2008 8.55 8.55 8.55 8.55
4407 NASDAQ NATR Wed, Feb 27, 2008 9.00 9.05 9.00 9.05
4406 NASDAQ NATR Tue, Feb 26, 2008 8.50 8.50 8.37 8.37
4405 NASDAQ NATR Mon, Feb 25, 2008 8.36 9.20 8.36 9.20
4404 NASDAQ NATR Fri, Feb 22, 2008 9.60 10.01 9.60 9.60
4403 NASDAQ NATR Thu, Feb 21, 2008 10.99 10.99 9.65 10.98
4402 NASDAQ NATR Wed, Feb 20, 2008 8.35 11.00 8.35 10.99
4401 NASDAQ NATR Tue, Feb 19, 2008 8.35 8.35 8.35 8.35
4400 NASDAQ NATR Fri, Feb 15, 2008 8.40 8.40 8.35 8.35
4399 NASDAQ NATR Thu, Feb 14, 2008 8.40 8.40 8.40 8.40
4398 NASDAQ NATR Wed, Feb 13, 2008 8.26 8.70 8.26 8.70
4397 NASDAQ NATR Tue, Feb 12, 2008 8.49 8.49 8.49 8.49
4396 NASDAQ NATR Mon, Feb 11, 2008 8.26 8.26 8.25 8.26
4395 NASDAQ NATR Fri, Feb 8, 2008 8.51 8.51 8.51 8.51
4394 NASDAQ NATR Thu, Feb 7, 2008 8.50 9.58 8.50 9.03
4393 NASDAQ NATR Wed, Feb 6, 2008 8.25 8.25 8.25 8.25
4392 NASDAQ NATR Mon, Feb 4, 2008 8.25 8.25 8.25 8.25
4391 NASDAQ NATR Fri, Feb 1, 2008 8.22 8.25 8.22 8.24
4390 NASDAQ NATR Thu, Jan 31, 2008 8.01 9.00 7.90 9.00
4389 NASDAQ NATR Wed, Jan 30, 2008 8.00 8.01 7.50 8.00
4388 NASDAQ NATR Mon, Jan 28, 2008 8.01 8.02 8.01 8.01
4387 NASDAQ NATR Fri, Jan 25, 2008 8.00 8.01 8.00 8.01
4386 NASDAQ NATR Thu, Jan 24, 2008 8.05 8.05 8.00 8.00
4385 NASDAQ NATR Wed, Jan 23, 2008 8.05 8.10 8.00 8.00
4384 NASDAQ NATR Tue, Jan 22, 2008 8.05 8.05 8.05 8.05
4383 NASDAQ NATR Fri, Jan 18, 2008 8.05 9.00 8.05 8.05
4382 NASDAQ NATR Thu, Jan 17, 2008 8.05 8.05 8.03 8.05
4381 NASDAQ NATR Wed, Jan 16, 2008 8.05 8.05 8.03 8.03
4380 NASDAQ NATR Tue, Jan 15, 2008 8.03 8.05 8.03 8.05
4379 NASDAQ NATR Mon, Jan 14, 2008 8.10 8.10 8.03 8.03
4378 NASDAQ NATR Fri, Jan 11, 2008 8.50 8.50 8.10 8.10
4377 NASDAQ NATR Thu, Jan 10, 2008 8.50 8.75 8.50 8.50
4376 NASDAQ NATR Wed, Jan 9, 2008 8.75 8.75 7.95 8.70
4375 NASDAQ NATR Tue, Jan 8, 2008 8.75 8.75 8.75 8.75
4374 NASDAQ NATR Mon, Jan 7, 2008 9.00 9.10 8.70 8.70
4373 NASDAQ NATR Fri, Jan 4, 2008 9.25 9.25 9.00 9.00
4372 NASDAQ NATR Thu, Jan 3, 2008 9.25 9.25 9.25 9.25
4371 NASDAQ NATR Wed, Jan 2, 2008 9.50 9.50 9.25 9.25
4370 NASDAQ NATR Mon, Dec 31, 2007 9.20 9.50 9.20 9.50
4369 NASDAQ NATR Fri, Dec 28, 2007 9.51 9.51 9.05 9.20
4368 NASDAQ NATR Thu, Dec 27, 2007 9.51 9.51 9.51 9.51
4367 NASDAQ NATR Wed, Dec 26, 2007 9.51 9.75 9.51 9.75
4366 NASDAQ NATR Mon, Dec 24, 2007 9.51 9.80 9.48 9.48
4365 NASDAQ NATR Fri, Dec 21, 2007 9.50 9.51 9.50 9.51
4364 NASDAQ NATR Thu, Dec 20, 2007 9.05 9.50 9.05 9.06
4363 NASDAQ NATR Wed, Dec 19, 2007 9.05 9.40 9.05 9.40
4362 NASDAQ NATR Tue, Dec 18, 2007 9.10 9.80 9.01 9.05
4361 NASDAQ NATR Mon, Dec 17, 2007 9.01 10.20 9.01 9.80
4360 NASDAQ NATR Fri, Dec 14, 2007 9.30 9.30 9.00 9.01
4359 NASDAQ NATR Thu, Dec 13, 2007 9.00 9.60 9.00 9.60
4358 NASDAQ NATR Wed, Dec 12, 2007 9.53 9.55 8.10 9.53
4357 NASDAQ NATR Tue, Dec 11, 2007 9.60 9.60 9.53 9.53
4356 NASDAQ NATR Mon, Dec 10, 2007 9.80 10.50 9.70 10.50
4355 NASDAQ NATR Fri, Dec 7, 2007 9.75 9.80 9.72 9.80
4354 NASDAQ NATR Thu, Dec 6, 2007 9.73 9.75 9.73 9.75
4353 NASDAQ NATR Wed, Dec 5, 2007 9.72 9.75 9.72 9.75
4352 NASDAQ NATR Mon, Dec 3, 2007 9.70 11.00 9.70 9.75
4351 NASDAQ NATR Fri, Nov 30, 2007 9.55 9.71 9.53 9.53
4350 NASDAQ NATR Thu, Nov 29, 2007 9.55 9.55 9.55 9.55
4349 NASDAQ NATR Wed, Nov 28, 2007 9.25 9.62 9.25 9.55
4348 NASDAQ NATR Tue, Nov 27, 2007 9.53 9.53 9.53 9.53
4347 NASDAQ NATR Mon, Nov 26, 2007 9.53 9.53 9.53 9.53
4346 NASDAQ NATR Fri, Nov 23, 2007 9.80 9.80 9.75 9.75
4345 NASDAQ NATR Wed, Nov 21, 2007 9.95 9.95 9.95 9.95
4344 NASDAQ NATR Tue, Nov 20, 2007 9.95 10.00 9.95 10.00
4343 NASDAQ NATR Mon, Nov 19, 2007 9.90 10.00 9.90 10.00
4342 NASDAQ NATR Fri, Nov 16, 2007 10.10 10.10 9.75 10.00
4341 NASDAQ NATR Thu, Nov 15, 2007 10.50 10.50 10.20 10.30
4340 NASDAQ NATR Wed, Nov 14, 2007 11.60 11.60 11.00 11.25
4339 NASDAQ NATR Tue, Nov 13, 2007 12.00 12.00 11.50 11.50
4338 NASDAQ NATR Mon, Nov 12, 2007 11.85 12.00 11.65 11.70
4337 NASDAQ NATR Fri, Nov 9, 2007 12.00 12.00 11.90 11.90
4336 NASDAQ NATR Thu, Nov 8, 2007 12.00 12.00 11.90 12.00
4335 NASDAQ NATR Wed, Nov 7, 2007 12.00 12.00 12.00 12.00
4334 NASDAQ NATR Tue, Nov 6, 2007 11.50 11.90 11.50 11.85
4333 NASDAQ NATR Mon, Nov 5, 2007 12.00 12.00 12.00 12.00
4332 NASDAQ NATR Fri, Nov 2, 2007 12.00 12.00 12.00 12.00
4331 NASDAQ NATR Thu, Nov 1, 2007 12.00 12.00 11.95 12.00
4330 NASDAQ NATR Wed, Oct 31, 2007 12.00 12.00 11.45 11.95
4329 NASDAQ NATR Tue, Oct 30, 2007 12.00 12.00 12.00 12.00
4328 NASDAQ NATR Mon, Oct 29, 2007 12.00 12.00 12.00 12.00
4327 NASDAQ NATR Fri, Oct 26, 2007 12.00 12.00 12.00 12.00
4326 NASDAQ NATR Thu, Oct 25, 2007 12.00 12.00 12.00 12.00
4325 NASDAQ NATR Wed, Oct 24, 2007 12.00 12.00 12.00 12.00
4324 NASDAQ NATR Tue, Oct 23, 2007 12.00 12.00 12.00 12.00
4323 NASDAQ NATR Mon, Oct 22, 2007 12.02 12.02 12.00 12.00
4322 NASDAQ NATR Fri, Oct 19, 2007 12.00 12.05 12.00 12.02
4321 NASDAQ NATR Thu, Oct 18, 2007 12.00 12.00 12.00 12.00
4320 NASDAQ NATR Wed, Oct 17, 2007 12.10 12.10 12.00 12.00
4319 NASDAQ NATR Tue, Oct 16, 2007 12.05 12.10 12.00 12.10
4318 NASDAQ NATR Mon, Oct 15, 2007 12.10 12.50 12.10 12.10
4317 NASDAQ NATR Fri, Oct 12, 2007 12.10 12.30 12.10 12.10
4316 NASDAQ NATR Thu, Oct 11, 2007 12.00 12.10 11.45 12.10
4315 NASDAQ NATR Wed, Oct 10, 2007 12.00 12.00 11.65 12.00
4314 NASDAQ NATR Tue, Oct 9, 2007 12.05 12.05 12.00 12.00
4313 NASDAQ NATR Mon, Oct 8, 2007 12.05 12.05 12.05 12.05
4312 NASDAQ NATR Fri, Oct 5, 2007 12.25 12.30 11.75 12.25
4311 NASDAQ NATR Thu, Oct 4, 2007 12.25 12.30 12.25 12.30
4310 NASDAQ NATR Wed, Oct 3, 2007 12.25 12.30 12.25 12.30
4309 NASDAQ NATR Tue, Oct 2, 2007 12.40 12.40 12.00 12.25
4308 NASDAQ NATR Mon, Oct 1, 2007 12.40 12.50 12.40 12.50
4307 NASDAQ NATR Fri, Sep 28, 2007 12.50 12.50 12.38 12.42
4306 NASDAQ NATR Thu, Sep 27, 2007 12.40 12.40 12.40 12.40
4305 NASDAQ NATR Wed, Sep 26, 2007 12.45 12.47 12.40 12.40
4304 NASDAQ NATR Tue, Sep 25, 2007 12.40 12.40 12.40 12.40
4303 NASDAQ NATR Fri, Sep 21, 2007 12.40 12.50 12.40 12.50
4302 NASDAQ NATR Thu, Sep 20, 2007 12.40 12.40 12.40 12.40
4301 NASDAQ NATR Wed, Sep 19, 2007 12.35 12.40 12.35 12.40
4300 NASDAQ NATR Tue, Sep 18, 2007 12.30 12.50 12.30 12.50
4299 NASDAQ NATR Mon, Sep 17, 2007 12.30 12.50 12.30 12.50
4298 NASDAQ NATR Fri, Sep 14, 2007 12.30 12.35 12.30 12.30
4297 NASDAQ NATR Thu, Sep 13, 2007 12.30 12.30 12.30 12.30
4296 NASDAQ NATR Wed, Sep 12, 2007 12.45 12.45 12.30 12.30
4295 NASDAQ NATR Tue, Sep 11, 2007 12.38 12.50 12.38 12.45
4294 NASDAQ NATR Mon, Sep 10, 2007 12.50 12.50 12.50 12.50
4293 NASDAQ NATR Fri, Sep 7, 2007 12.38 12.50 12.38 12.38
4292 NASDAQ NATR Thu, Sep 6, 2007 12.38 12.38 12.38 12.38
4291 NASDAQ NATR Wed, Sep 5, 2007 12.38 12.38 12.38 12.38
4290 NASDAQ NATR Tue, Sep 4, 2007 12.30 12.30 12.30 12.30
4289 NASDAQ NATR Fri, Aug 31, 2007 12.30 12.30 12.30 12.30
4288 NASDAQ NATR Thu, Aug 30, 2007 12.30 12.30 12.30 12.30
4287 NASDAQ NATR Wed, Aug 29, 2007 12.30 12.30 12.30 12.30
4286 NASDAQ NATR Tue, Aug 28, 2007 12.30 12.30 12.30 12.30
4285 NASDAQ NATR Mon, Aug 27, 2007 12.30 12.30 12.30 12.30
4284 NASDAQ NATR Fri, Aug 24, 2007 12.20 12.30 12.20 12.30
4283 NASDAQ NATR Thu, Aug 23, 2007 12.25 12.27 12.20 12.22
4282 NASDAQ NATR Wed, Aug 22, 2007 12.25 12.25 12.25 12.25
4281 NASDAQ NATR Tue, Aug 21, 2007 11.50 12.25 11.50 12.25
4280 NASDAQ NATR Mon, Aug 20, 2007 12.90 12.90 12.90 12.90
4279 NASDAQ NATR Fri, Aug 17, 2007 14.05 14.05 12.45 13.00
4278 NASDAQ NATR Thu, Aug 16, 2007 13.30 14.40 11.90 12.30
4277 NASDAQ NATR Wed, Aug 15, 2007 13.30 13.50 13.00 13.50
4276 NASDAQ NATR Tue, Aug 14, 2007 12.20 14.45 11.80 14.45
4275 NASDAQ NATR Mon, Aug 13, 2007 11.50 12.25 11.50 12.25
4274 NASDAQ NATR Fri, Aug 10, 2007 12.00 12.00 11.60 11.60
4273 NASDAQ NATR Thu, Aug 9, 2007 12.00 12.20 11.80 12.20
4272 NASDAQ NATR Wed, Aug 8, 2007 12.20 12.24 12.15 12.15
4271 NASDAQ NATR Tue, Aug 7, 2007 12.06 12.25 12.06 12.24
4270 NASDAQ NATR Mon, Aug 6, 2007 12.06 12.06 12.06 12.06
4269 NASDAQ NATR Fri, Aug 3, 2007 12.55 12.55 12.00 12.35
4268 NASDAQ NATR Thu, Aug 2, 2007 12.40 12.55 12.40 12.55
4267 NASDAQ NATR Wed, Aug 1, 2007 12.30 12.30 12.30 12.30
4266 NASDAQ NATR Tue, Jul 31, 2007 12.50 12.52 12.50 12.52
4265 NASDAQ NATR Mon, Jul 30, 2007 12.65 12.75 12.65 12.75
4264 NASDAQ NATR Fri, Jul 27, 2007 12.90 13.00 12.70 12.70
4263 NASDAQ NATR Thu, Jul 26, 2007 12.65 13.30 12.65 13.30
4262 NASDAQ NATR Wed, Jul 25, 2007 12.56 13.00 12.55 12.90
4261 NASDAQ NATR Tue, Jul 24, 2007 12.58 12.58 12.51 12.54
4260 NASDAQ NATR Mon, Jul 23, 2007 12.53 12.60 12.53 12.60
4259 NASDAQ NATR Fri, Jul 20, 2007 12.50 12.55 12.50 12.53
4258 NASDAQ NATR Thu, Jul 19, 2007 12.60 12.60 12.50 12.55
4257 NASDAQ NATR Wed, Jul 18, 2007 12.05 12.51 12.05 12.51
4256 NASDAQ NATR Tue, Jul 17, 2007 12.45 12.50 12.45 12.45
4255 NASDAQ NATR Mon, Jul 16, 2007 12.45 12.60 12.40 12.60
4254 NASDAQ NATR Fri, Jul 13, 2007 11.70 12.70 11.70 12.70
4253 NASDAQ NATR Thu, Jul 12, 2007 11.50 11.75 11.50 11.75
4252 NASDAQ NATR Wed, Jul 11, 2007 11.70 11.75 11.70 11.70
4251 NASDAQ NATR Tue, Jul 10, 2007 11.70 11.85 11.70 11.85
4250 NASDAQ NATR Mon, Jul 9, 2007 11.65 11.70 11.65 11.70
4249 NASDAQ NATR Fri, Jul 6, 2007 11.70 11.70 11.65 11.65
4248 NASDAQ NATR Thu, Jul 5, 2007 11.70 11.70 11.60 11.60
4247 NASDAQ NATR Tue, Jul 3, 2007 11.75 11.75 11.75 11.75
4246 NASDAQ NATR Mon, Jul 2, 2007 11.75 11.75 11.75 11.75
4245 NASDAQ NATR Fri, Jun 29, 2007 11.75 11.85 11.75 11.85
4244 NASDAQ NATR Wed, Jun 27, 2007 11.70 11.85 11.70 11.75
4243 NASDAQ NATR Tue, Jun 26, 2007 11.75 11.75 11.72 11.73
4242 NASDAQ NATR Mon, Jun 25, 2007 11.70 11.70 11.70 11.70
4241 NASDAQ NATR Fri, Jun 22, 2007 11.75 11.75 11.70 11.70
4240 NASDAQ NATR Thu, Jun 21, 2007 11.75 11.75 11.75 11.75
4239 NASDAQ NATR Wed, Jun 20, 2007 11.65 11.80 11.65 11.75
4238 NASDAQ NATR Tue, Jun 19, 2007 12.35 12.35 11.75 12.00
4237 NASDAQ NATR Mon, Jun 18, 2007 11.70 12.25 11.70 11.75
4236 NASDAQ NATR Fri, Jun 15, 2007 11.65 11.70 11.60 11.70
4235 NASDAQ NATR Thu, Jun 14, 2007 11.55 11.80 11.55 11.65
4234 NASDAQ NATR Wed, Jun 13, 2007 11.60 11.60 11.51 11.60
4233 NASDAQ NATR Tue, Jun 12, 2007 11.55 11.63 11.50 11.56
4232 NASDAQ NATR Mon, Jun 11, 2007 10.75 11.63 10.75 11.60
4231 NASDAQ NATR Fri, Jun 8, 2007 11.45 11.45 10.75 11.21
4230 NASDAQ NATR Thu, Jun 7, 2007 11.45 11.60 11.45 11.60
4229 NASDAQ NATR Wed, Jun 6, 2007 11.40 11.60 11.37 11.60
4228 NASDAQ NATR Tue, Jun 5, 2007 11.60 11.60 10.75 11.60
4227 NASDAQ NATR Mon, Jun 4, 2007 11.70 11.70 11.50 11.50
4226 NASDAQ NATR Fri, Jun 1, 2007 11.25 11.78 11.20 11.70
4225 NASDAQ NATR Thu, May 31, 2007 11.58 11.64 11.00 11.50
4224 NASDAQ NATR Wed, May 30, 2007 11.55 11.55 11.55 11.55
4223 NASDAQ NATR Tue, May 29, 2007 11.70 11.70 11.45 11.45
4222 NASDAQ NATR Fri, May 25, 2007 11.00 11.70 10.55 11.70
4221 NASDAQ NATR Thu, May 24, 2007 11.55 11.60 11.55 11.60
4220 NASDAQ NATR Wed, May 23, 2007 11.50 11.55 11.40 11.55
4219 NASDAQ NATR Tue, May 22, 2007 11.60 11.62 11.55 11.62
4218 NASDAQ NATR Mon, May 21, 2007 11.40 11.60 11.40 11.60
4217 NASDAQ NATR Fri, May 18, 2007 11.60 11.74 11.11 11.74
4216 NASDAQ NATR Thu, May 17, 2007 11.50 11.74 11.50 11.50
4215 NASDAQ NATR Wed, May 16, 2007 11.20 11.60 11.20 11.50
4214 NASDAQ NATR Tue, May 15, 2007 11.60 11.70 11.60 11.60
4213 NASDAQ NATR Mon, May 14, 2007 11.40 11.80 11.37 11.80
4212 NASDAQ NATR Fri, May 11, 2007 11.65 11.71 11.15 11.71
4211 NASDAQ NATR Thu, May 10, 2007 11.55 11.70 11.55 11.62
4210 NASDAQ NATR Wed, May 9, 2007 11.30 11.60 11.10 11.55
4209 NASDAQ NATR Tue, May 8, 2007 11.65 11.65 10.60 10.60
4208 NASDAQ NATR Mon, May 7, 2007 11.60 11.65 10.60 11.65
4207 NASDAQ NATR Fri, May 4, 2007 11.60 11.60 11.60 11.60
4206 NASDAQ NATR Thu, May 3, 2007 11.50 11.70 11.50 11.60
4205 NASDAQ NATR Wed, May 2, 2007 11.55 11.75 11.50 11.50
4204 NASDAQ NATR Tue, May 1, 2007 11.55 11.65 11.55 11.65
4203 NASDAQ NATR Thu, Apr 26, 2007 11.55 11.60 11.55 11.60
4202 NASDAQ NATR Wed, Apr 25, 2007 11.55 11.65 11.55 11.65
4201 NASDAQ NATR Tue, Apr 24, 2007 11.55 11.60 11.55 11.60
4200 NASDAQ NATR Mon, Apr 23, 2007 11.55 11.60 11.55 11.55
4199 NASDAQ NATR Fri, Apr 20, 2007 11.55 11.60 11.55 11.55
4198 NASDAQ NATR Thu, Apr 19, 2007 11.50 11.68 11.50 11.55
4197 NASDAQ NATR Wed, Apr 18, 2007 11.60 11.85 11.50 11.85
4196 NASDAQ NATR Tue, Apr 17, 2007 11.75 11.79 11.75 11.79
4195 NASDAQ NATR Mon, Apr 16, 2007 11.60 11.70 11.50 11.60
4194 NASDAQ NATR Fri, Apr 13, 2007 10.55 11.60 10.55 11.50
4193 NASDAQ NATR Thu, Apr 12, 2007 11.05 11.80 11.05 11.80
4192 NASDAQ NATR Wed, Apr 11, 2007 11.45 11.60 10.20 11.55
4191 NASDAQ NATR Tue, Apr 10, 2007 11.75 11.75 11.45 11.75
4190 NASDAQ NATR Mon, Apr 9, 2007 11.55 11.60 11.55 11.60
4189 NASDAQ NATR Thu, Apr 5, 2007 11.55 11.65 11.50 11.65
4188 NASDAQ NATR Wed, Apr 4, 2007 11.58 11.60 11.30 11.58
4187 NASDAQ NATR Tue, Apr 3, 2007 11.61 11.61 11.58 11.58
4186 NASDAQ NATR Mon, Apr 2, 2007 11.50 11.75 11.50 11.60
4185 NASDAQ NATR Fri, Mar 30, 2007 11.76 11.76 11.76 11.76
4184 NASDAQ NATR Thu, Mar 29, 2007 11.76 11.76 11.76 11.76
4183 NASDAQ NATR Wed, Mar 28, 2007 11.80 11.80 11.76 11.76
4182 NASDAQ NATR Tue, Mar 27, 2007 11.76 11.76 11.76 11.76
4181 NASDAQ NATR Mon, Mar 26, 2007 11.76 11.76 11.76 11.76
4180 NASDAQ NATR Fri, Mar 23, 2007 11.76 11.76 11.76 11.76
4179 NASDAQ NATR Thu, Mar 22, 2007 11.76 11.76 11.76 11.76
4178 NASDAQ NATR Wed, Mar 21, 2007 11.76 11.80 11.76 11.76
4177 NASDAQ NATR Tue, Mar 20, 2007 11.85 11.85 11.76 11.76
4176 NASDAQ NATR Mon, Mar 19, 2007 11.87 11.87 11.87 11.87
4175 NASDAQ NATR Thu, Mar 15, 2007 11.80 11.85 11.80 11.85
4174 NASDAQ NATR Wed, Mar 14, 2007 11.80 12.30 11.80 12.25
4173 NASDAQ NATR Tue, Mar 13, 2007 11.80 11.80 11.80 11.80
4172 NASDAQ NATR Mon, Mar 12, 2007 11.76 12.50 11.76 12.10
4171 NASDAQ NATR Fri, Mar 9, 2007 11.95 11.95 11.76 11.76
4170 NASDAQ NATR Thu, Mar 8, 2007 11.90 11.90 11.70 11.80
4169 NASDAQ NATR Wed, Mar 7, 2007 11.80 11.81 11.75 11.75
4168 NASDAQ NATR Tue, Mar 6, 2007 11.75 11.80 11.75 11.75
4167 NASDAQ NATR Mon, Mar 5, 2007 11.80 11.80 11.80 11.80
4166 NASDAQ NATR Fri, Mar 2, 2007 11.80 11.85 11.80 11.85
4165 NASDAQ NATR Thu, Mar 1, 2007 12.00 12.15 11.80 11.80
4164 NASDAQ NATR Wed, Feb 28, 2007 12.00 12.00 12.00 12.00
4163 NASDAQ NATR Tue, Feb 27, 2007 12.45 12.45 12.00 12.00
4162 NASDAQ NATR Mon, Feb 26, 2007 11.75 12.50 11.75 12.00
4161 NASDAQ NATR Fri, Feb 23, 2007 11.99 12.60 11.99 12.38
4160 NASDAQ NATR Thu, Feb 22, 2007 11.91 12.50 11.91 12.50
4159 NASDAQ NATR Wed, Feb 21, 2007 11.80 12.05 11.80 12.05
4158 NASDAQ NATR Tue, Feb 20, 2007 11.75 12.00 11.75 12.00
4157 NASDAQ NATR Fri, Feb 16, 2007 11.75 11.75 11.75 11.75
4156 NASDAQ NATR Thu, Feb 15, 2007 11.80 11.80 11.75 11.75
4155 NASDAQ NATR Wed, Feb 14, 2007 11.72 11.80 11.72 11.80
4154 NASDAQ NATR Tue, Feb 13, 2007 11.65 11.72 11.65 11.72
4153 NASDAQ NATR Mon, Feb 12, 2007 11.65 11.80 11.65 11.72
4152 NASDAQ NATR Thu, Feb 8, 2007 11.80 11.80 11.70 11.70
4151 NASDAQ NATR Wed, Feb 7, 2007 11.70 11.80 11.70 11.80
4150 NASDAQ NATR Tue, Feb 6, 2007 11.60 11.70 11.60 11.70
4149 NASDAQ NATR Mon, Feb 5, 2007 11.55 12.00 11.55 12.00
4148 NASDAQ NATR Fri, Feb 2, 2007 11.50 11.60 11.50 11.55
4147 NASDAQ NATR Thu, Feb 1, 2007 11.50 11.50 11.50 11.50
4146 NASDAQ NATR Wed, Jan 31, 2007 11.50 11.50 11.50 11.50
4145 NASDAQ NATR Tue, Jan 30, 2007 11.50 11.50 11.50 11.50
4144 NASDAQ NATR Mon, Jan 29, 2007 11.50 11.60 11.50 11.50
4143 NASDAQ NATR Fri, Jan 26, 2007 11.50 11.50 11.50 11.50
4142 NASDAQ NATR Thu, Jan 25, 2007 11.46 11.50 11.46 11.50
4141 NASDAQ NATR Wed, Jan 24, 2007 11.47 11.47 11.47 11.47
4140 NASDAQ NATR Tue, Jan 23, 2007 11.48 11.50 11.46 11.50
4139 NASDAQ NATR Mon, Jan 22, 2007 11.47 11.50 11.47 11.47
4138 NASDAQ NATR Fri, Jan 19, 2007 11.47 11.50 11.47 11.50
4137 NASDAQ NATR Thu, Jan 18, 2007 11.45 11.60 11.45 11.50
4136 NASDAQ NATR Wed, Jan 17, 2007 11.60 11.60 11.60 11.60
4135 NASDAQ NATR Fri, Jan 12, 2007 11.60 11.75 11.60 11.75
4134 NASDAQ NATR Thu, Jan 11, 2007 11.65 11.70 11.65 11.70
4133 NASDAQ NATR Wed, Jan 10, 2007 11.60 11.60 11.60 11.60
4132 NASDAQ NATR Tue, Jan 9, 2007 11.60 11.75 11.60 11.60
4131 NASDAQ NATR Mon, Jan 8, 2007 11.65 11.65 11.60 11.60
4130 NASDAQ NATR Fri, Jan 5, 2007 11.65 11.80 11.65 11.75
4129 NASDAQ NATR Thu, Jan 4, 2007 11.90 11.90 11.65 11.65
4128 NASDAQ NATR Wed, Jan 3, 2007 11.50 11.92 11.50 11.90
4127 NASDAQ NATR Fri, Dec 29, 2006 11.51 11.56 11.51 11.56
4126 NASDAQ NATR Thu, Dec 28, 2006 11.50 11.51 11.50 11.51
4125 NASDAQ NATR Wed, Dec 27, 2006 11.40 11.50 11.40 11.50
4124 NASDAQ NATR Tue, Dec 26, 2006 11.36 11.40 11.36 11.36
4123 NASDAQ NATR Fri, Dec 22, 2006 11.40 11.40 11.35 11.40
4122 NASDAQ NATR Thu, Dec 21, 2006 11.30 11.40 11.30 11.40
4121 NASDAQ NATR Wed, Dec 20, 2006 11.30 11.40 11.30 11.40
4120 NASDAQ NATR Tue, Dec 19, 2006 11.30 11.40 11.30 11.30
4119 NASDAQ NATR Mon, Dec 18, 2006 11.20 12.00 11.20 11.30
4118 NASDAQ NATR Fri, Dec 15, 2006 11.20 11.20 11.20 11.20
4117 NASDAQ NATR Thu, Dec 14, 2006 11.20 11.75 11.20 11.30
4116 NASDAQ NATR Wed, Dec 13, 2006 11.20 11.58 11.20 11.20
4115 NASDAQ NATR Tue, Dec 12, 2006 11.50 11.60 11.30 11.58
4114 NASDAQ NATR Mon, Dec 11, 2006 11.30 11.50 11.29 11.50
4113 NASDAQ NATR Fri, Dec 8, 2006 11.20 11.30 11.20 11.20
4112 NASDAQ NATR Thu, Dec 7, 2006 11.30 11.30 11.30 11.30
4111 NASDAQ NATR Wed, Dec 6, 2006 11.30 11.30 11.30 11.30
4110 NASDAQ NATR Tue, Dec 5, 2006 11.25 11.30 11.20 11.30
4109 NASDAQ NATR Fri, Dec 1, 2006 11.20 11.28 11.20 11.20
4108 NASDAQ NATR Thu, Nov 30, 2006 11.25 11.25 11.20 11.20
4107 NASDAQ NATR Wed, Nov 29, 2006 11.20 11.30 11.20 11.30
4106 NASDAQ NATR Tue, Nov 28, 2006 11.15 11.22 11.15 11.22
4105 NASDAQ NATR Mon, Nov 27, 2006 11.30 11.30 11.30 11.30
4104 NASDAQ NATR Wed, Nov 22, 2006 11.20 11.20 11.10 11.20
4103 NASDAQ NATR Tue, Nov 21, 2006 11.25 11.25 11.20 11.20
4102 NASDAQ NATR Mon, Nov 20, 2006 11.03 11.10 10.85 10.85
4101 NASDAQ NATR Fri, Nov 17, 2006 11.10 11.20 11.10 11.10
4100 NASDAQ NATR Thu, Nov 16, 2006 11.03 11.10 11.03 11.10
4099 NASDAQ NATR Wed, Nov 15, 2006 11.03 11.03 11.03 11.03
4098 NASDAQ NATR Tue, Nov 14, 2006 11.03 11.20 11.03 11.03
4097 NASDAQ NATR Mon, Nov 13, 2006 11.15 11.20 11.03 11.05
4096 NASDAQ NATR Fri, Nov 10, 2006 11.10 11.10 11.03 11.03
4095 NASDAQ NATR Thu, Nov 9, 2006 10.95 11.15 10.95 11.03
4094 NASDAQ NATR Wed, Nov 8, 2006 10.95 11.05 10.95 10.95
4093 NASDAQ NATR Tue, Nov 7, 2006 10.95 10.95 10.95 10.95
4092 NASDAQ NATR Mon, Nov 6, 2006 10.90 10.90 10.90 10.90
4091 NASDAQ NATR Fri, Nov 3, 2006 11.00 11.00 10.90 10.90
4090 NASDAQ NATR Thu, Nov 2, 2006 10.70 11.10 10.70 11.00
4089 NASDAQ NATR Wed, Nov 1, 2006 10.50 11.00 10.50 10.60
4088 NASDAQ NATR Tue, Oct 31, 2006 10.60 10.70 10.60 10.70
4087 NASDAQ NATR Mon, Oct 30, 2006 10.60 10.60 10.60 10.60
4086 NASDAQ NATR Fri, Oct 27, 2006 10.50 10.65 10.48 10.65
4085 NASDAQ NATR Thu, Oct 26, 2006 10.45 10.55 10.45 10.50
4084 NASDAQ NATR Wed, Oct 25, 2006 10.45 10.55 10.45 10.50
4083 NASDAQ NATR Tue, Oct 24, 2006 10.45 10.50 10.45 10.50
4082 NASDAQ NATR Mon, Oct 23, 2006 10.50 10.50 10.50 10.50
4081 NASDAQ NATR Fri, Oct 20, 2006 10.50 10.50 10.45 10.50
4080 NASDAQ NATR Thu, Oct 19, 2006 10.13 10.35 10.13 10.35
4079 NASDAQ NATR Wed, Oct 18, 2006 10.13 10.13 10.13 10.13
4078 NASDAQ NATR Tue, Oct 17, 2006 10.13 10.13 10.13 10.13
4077 NASDAQ NATR Mon, Oct 16, 2006 10.00 10.35 10.00 10.35
4076 NASDAQ NATR Fri, Oct 13, 2006 9.91 11.20 9.91 10.65
4075 NASDAQ NATR Thu, Oct 12, 2006 10.25 10.25 10.25 10.25
4074 NASDAQ NATR Wed, Oct 11, 2006 10.15 10.15 10.00 10.00
4073 NASDAQ NATR Tue, Oct 10, 2006 9.91 10.15 9.91 10.15
4072 NASDAQ NATR Mon, Oct 9, 2006 10.00 10.00 9.91 9.91
4071 NASDAQ NATR Fri, Oct 6, 2006 10.15 10.25 10.10 10.25
4070 NASDAQ NATR Thu, Oct 5, 2006 10.10 10.10 10.10 10.10
4069 NASDAQ NATR Wed, Oct 4, 2006 10.15 10.15 10.00 10.10
4068 NASDAQ NATR Tue, Oct 3, 2006 10.10 10.15 10.10 10.15
4067 NASDAQ NATR Mon, Oct 2, 2006 11.00 11.03 11.00 11.00
4066 NASDAQ NATR Fri, Sep 29, 2006 11.05 11.05 10.35 10.45
4065 NASDAQ NATR Thu, Sep 28, 2006 10.05 10.15 10.05 10.15
4064 NASDAQ NATR Wed, Sep 27, 2006 11.10 11.10 10.50 10.75
4063 NASDAQ NATR Tue, Sep 26, 2006 10.05 10.20 10.05 10.20
4062 NASDAQ NATR Mon, Sep 25, 2006 10.10 10.10 10.05 10.05
4061 NASDAQ NATR Fri, Sep 22, 2006 10.05 10.25 10.05 10.10
4060 NASDAQ NATR Thu, Sep 21, 2006 10.05 10.30 10.01 10.30
4059 NASDAQ NATR Wed, Sep 20, 2006 11.35 11.35 10.00 10.25
4058 NASDAQ NATR Tue, Sep 19, 2006 10.00 11.55 10.00 11.35
4057 NASDAQ NATR Mon, Sep 18, 2006 11.40 11.40 10.80 11.20
4056 NASDAQ NATR Fri, Sep 15, 2006 11.25 11.25 10.80 11.25
4055 NASDAQ NATR Thu, Sep 14, 2006 10.50 11.25 10.50 11.00
4054 NASDAQ NATR Wed, Sep 13, 2006 10.60 10.75 10.10 10.75
4053 NASDAQ NATR Tue, Sep 12, 2006 9.95 10.60 9.95 10.25
4052 NASDAQ NATR Mon, Sep 11, 2006 10.10 10.10 10.10 10.10
4051 NASDAQ NATR Fri, Sep 8, 2006 9.90 10.10 9.90 10.10
4050 NASDAQ NATR Thu, Sep 7, 2006 10.05 10.05 9.75 9.90
4049 NASDAQ NATR Wed, Sep 6, 2006 10.05 10.40 10.05 10.05
4048 NASDAQ NATR Tue, Sep 5, 2006 10.30 11.00 10.30 10.50
4047 NASDAQ NATR Fri, Sep 1, 2006 11.80 11.80 10.25 11.00
4046 NASDAQ NATR Thu, Aug 31, 2006 11.95 11.95 11.75 11.80
4045 NASDAQ NATR Wed, Aug 30, 2006 11.85 11.85 11.50 11.60
4044 NASDAQ NATR Tue, Aug 29, 2006 11.60 12.25 11.60 12.00
4043 NASDAQ NATR Mon, Aug 28, 2006 10.40 11.75 10.40 11.66
4042 NASDAQ NATR Fri, Aug 25, 2006 10.05 10.15 9.55 10.15
4041 NASDAQ NATR Thu, Aug 24, 2006 8.80 9.90 8.80 9.90
4040 NASDAQ NATR Wed, Aug 23, 2006 8.80 8.80 8.50 8.70
4039 NASDAQ NATR Tue, Aug 22, 2006 8.60 9.00 8.60 8.65
4038 NASDAQ NATR Mon, Aug 21, 2006 8.90 8.90 8.90 8.90
4037 NASDAQ NATR Fri, Aug 18, 2006 8.75 8.90 8.50 8.90
4036 NASDAQ NATR Thu, Aug 17, 2006 8.55 9.00 8.50 9.00
4035 NASDAQ NATR Wed, Aug 16, 2006 8.25 9.07 8.25 8.75
4034 NASDAQ NATR Tue, Aug 15, 2006 9.00 9.00 8.15 9.00
4033 NASDAQ NATR Mon, Aug 14, 2006 8.70 9.15 8.70 8.93
4032 NASDAQ NATR Fri, Aug 11, 2006 9.00 9.15 9.00 9.00
4031 NASDAQ NATR Thu, Aug 10, 2006 9.15 9.15 9.00 9.15
4030 NASDAQ NATR Wed, Aug 9, 2006 8.93 9.00 8.93 9.00
4029 NASDAQ NATR Tue, Aug 8, 2006 8.93 9.00 8.93 8.93
4028 NASDAQ NATR Mon, Aug 7, 2006 8.93 8.93 8.93 8.93
4027 NASDAQ NATR Fri, Aug 4, 2006 9.00 9.00 8.91 8.91
4026 NASDAQ NATR Thu, Aug 3, 2006 8.76 9.00 8.71 9.00
4025 NASDAQ NATR Wed, Aug 2, 2006 8.66 8.78 8.66 8.78
4024 NASDAQ NATR Tue, Aug 1, 2006 8.40 8.70 8.40 8.66
4023 NASDAQ NATR Mon, Jul 31, 2006 8.50 8.55 8.40 8.44
4022 NASDAQ NATR Fri, Jul 28, 2006 8.46 8.50 8.46 8.50
4021 NASDAQ NATR Thu, Jul 27, 2006 8.56 8.62 8.46 8.50
4020 NASDAQ NATR Wed, Jul 26, 2006 8.75 8.78 8.30 8.50
4019 NASDAQ NATR Tue, Jul 25, 2006 8.80 8.82 8.75 8.78
4018 NASDAQ NATR Mon, Jul 24, 2006 8.95 9.00 8.94 8.96
4017 NASDAQ NATR Fri, Jul 21, 2006 8.94 9.00 8.94 9.00
4016 NASDAQ NATR Thu, Jul 20, 2006 8.90 8.90 8.90 8.90
4015 NASDAQ NATR Wed, Jul 19, 2006 8.79 8.99 8.79 8.99
4014 NASDAQ NATR Tue, Jul 18, 2006 8.81 8.85 8.71 8.82
4013 NASDAQ NATR Mon, Jul 17, 2006 8.90 8.96 8.79 8.82
4012 NASDAQ NATR Fri, Jul 14, 2006 9.00 9.05 8.70 8.96
4011 NASDAQ NATR Thu, Jul 13, 2006 9.30 9.31 9.00 9.00
4010 NASDAQ NATR Wed, Jul 12, 2006 9.29 9.40 9.29 9.30
4009 NASDAQ NATR Tue, Jul 11, 2006 9.31 9.35 9.28 9.28
4008 NASDAQ NATR Mon, Jul 10, 2006 9.31 9.40 9.31 9.40
4007 NASDAQ NATR Fri, Jul 7, 2006 9.40 9.40 9.40 9.40
4006 NASDAQ NATR Thu, Jul 6, 2006 9.23 9.48 9.21 9.21
4005 NASDAQ NATR Wed, Jul 5, 2006 9.20 9.40 9.20 9.20
4004 NASDAQ NATR Mon, Jul 3, 2006 9.33 9.33 9.33 9.33
4003 NASDAQ NATR Fri, Jun 30, 2006 9.33 9.40 9.05 9.33
4002 NASDAQ NATR Thu, Jun 29, 2006 9.50 9.50 9.33 9.35
4001 NASDAQ NATR Wed, Jun 28, 2006 9.30 9.55 9.30 9.30
4000 NASDAQ NATR Tue, Jun 27, 2006 9.70 9.70 9.30 9.30
3999 NASDAQ NATR Mon, Jun 26, 2006 9.72 9.75 9.57 9.70
3998 NASDAQ NATR Fri, Jun 23, 2006 9.67 9.75 9.67 9.75
3997 NASDAQ NATR Thu, Jun 22, 2006 9.95 10.00 9.72 9.80
3996 NASDAQ NATR Wed, Jun 21, 2006 9.90 9.99 9.89 9.95
3995 NASDAQ NATR Tue, Jun 20, 2006 9.49 9.90 9.49 9.89
3994 NASDAQ NATR Mon, Jun 19, 2006 9.50 9.65 9.48 9.48
3993 NASDAQ NATR Fri, Jun 16, 2006 9.55 9.60 9.48 9.50
3992 NASDAQ NATR Thu, Jun 15, 2006 9.75 9.83 9.65 9.68
3991 NASDAQ NATR Wed, Jun 14, 2006 9.65 9.90 9.65 9.75
3990 NASDAQ NATR Tue, Jun 13, 2006 9.99 9.99 9.61 9.65
3989 NASDAQ NATR Mon, Jun 12, 2006 10.46 10.46 9.91 9.99
3988 NASDAQ NATR Fri, Jun 9, 2006 10.61 10.62 10.45 10.46
3987 NASDAQ NATR Thu, Jun 8, 2006 10.61 10.65 10.61 10.62
3986 NASDAQ NATR Wed, Jun 7, 2006 10.73 10.73 10.70 10.70
3985 NASDAQ NATR Tue, Jun 6, 2006 10.73 10.75 10.73 10.73
3984 NASDAQ NATR Mon, Jun 5, 2006 10.76 10.76 10.73 10.73
3983 NASDAQ NATR Fri, Jun 2, 2006 10.80 10.90 10.71 10.85
3982 NASDAQ NATR Thu, Jun 1, 2006 10.80 10.95 10.80 10.90
3981 NASDAQ NATR Wed, May 31, 2006 10.86 10.86 10.80 10.80
3980 NASDAQ NATR Tue, May 30, 2006 11.00 11.00 10.80 10.90
3979 NASDAQ NATR Fri, May 26, 2006 10.70 11.20 10.70 11.20
3978 NASDAQ NATR Thu, May 25, 2006 11.34 11.35 10.70 11.10
3977 NASDAQ NATR Wed, May 24, 2006 11.36 11.38 11.10 11.35
3976 NASDAQ NATR Tue, May 23, 2006 11.40 11.40 11.37 11.38
3975 NASDAQ NATR Mon, May 22, 2006 11.44 11.44 11.37 11.40
3974 NASDAQ NATR Fri, May 19, 2006 11.45 11.48 11.20 11.40
3973 NASDAQ NATR Thu, May 18, 2006 11.50 11.50 11.45 11.45
3972 NASDAQ NATR Wed, May 17, 2006 12.00 12.00 11.40 11.55
3971 NASDAQ NATR Tue, May 16, 2006 10.80 11.40 10.80 11.20
3970 NASDAQ NATR Mon, May 15, 2006 10.75 10.85 10.75 10.80
3969 NASDAQ NATR Fri, May 12, 2006 10.80 10.90 10.67 10.80
3968 NASDAQ NATR Thu, May 11, 2006 10.55 10.92 10.55 10.85
3967 NASDAQ NATR Wed, May 10, 2006 10.52 10.63 10.25 10.63
3966 NASDAQ NATR Tue, May 9, 2006 10.12 10.52 10.12 10.52
3965 NASDAQ NATR Mon, May 8, 2006 10.02 10.15 10.00 10.14
3964 NASDAQ NATR Fri, May 5, 2006 10.55 10.60 10.02 10.02
3963 NASDAQ NATR Thu, May 4, 2006 10.55 10.65 10.50 10.58
3962 NASDAQ NATR Wed, May 3, 2006 10.15 10.70 10.15 10.60
3961 NASDAQ NATR Tue, May 2, 2006 10.80 10.80 10.05 10.11
3960 NASDAQ NATR Mon, May 1, 2006 10.70 11.07 10.70 10.90
3959 NASDAQ NATR Fri, Apr 28, 2006 10.50 11.05 10.50 10.58
3958 NASDAQ NATR Thu, Apr 27, 2006 11.10 11.10 10.47 11.05
3957 NASDAQ NATR Wed, Apr 26, 2006 10.35 11.24 10.35 10.95
3956 NASDAQ NATR Tue, Apr 25, 2006 9.95 10.40 9.92 10.30
3955 NASDAQ NATR Mon, Apr 24, 2006 9.40 10.10 9.40 9.95
3954 NASDAQ NATR Fri, Apr 21, 2006 9.25 9.42 9.25 9.38
3953 NASDAQ NATR Thu, Apr 20, 2006 9.45 9.45 9.25 9.30
3952 NASDAQ NATR Wed, Apr 19, 2006 9.43 9.50 9.40 9.45
3951 NASDAQ NATR Tue, Apr 18, 2006 9.39 9.50 9.37 9.50
3950 NASDAQ NATR Mon, Apr 17, 2006 9.10 9.40 9.10 9.30
3949 NASDAQ NATR Thu, Apr 13, 2006 9.00 9.20 8.97 9.12
3948 NASDAQ NATR Wed, Apr 12, 2006 9.00 9.10 8.91 8.99
3947 NASDAQ NATR Tue, Apr 11, 2006 9.00 9.10 8.82 9.00
3946 NASDAQ NATR Mon, Apr 10, 2006 8.65 9.13 8.46 9.00
3945 NASDAQ NATR Fri, Apr 7, 2006 9.14 9.14 8.65 8.65
3944 NASDAQ NATR Thu, Apr 6, 2006 8.60 9.15 8.60 9.10
3943 NASDAQ NATR Wed, Apr 5, 2006 9.10 10.04 7.83 8.50
3942 NASDAQ NATR Tue, Apr 4, 2006 12.00 12.04 9.92 10.03
3941 NASDAQ NATR Mon, Apr 3, 2006 12.49 12.64 12.00 12.04
3940 NASDAQ NATR Fri, Mar 31, 2006 12.38 12.65 12.00 12.50
3939 NASDAQ NATR Thu, Mar 30, 2006 11.53 14.00 11.53 12.38
3938 NASDAQ NATR Wed, Mar 29, 2006 11.06 11.79 11.06 11.53
3937 NASDAQ NATR Tue, Mar 28, 2006 10.89 11.45 10.58 11.12
3936 NASDAQ NATR Mon, Mar 27, 2006 11.67 11.68 10.23 10.96
3935 NASDAQ NATR Fri, Mar 24, 2006 13.61 13.61 11.46 11.68
3934 NASDAQ NATR Thu, Mar 23, 2006 13.91 13.95 13.56 13.61
3933 NASDAQ NATR Wed, Mar 22, 2006 14.07 14.25 13.30 13.91
3932 NASDAQ NATR Tue, Mar 21, 2006 13.60 14.12 13.60 14.00
3931 NASDAQ NATR Mon, Mar 20, 2006 16.43 16.93 13.51 14.33
3930 NASDAQ NATR Fri, Mar 17, 2006 16.75 16.97 16.40 16.49
3929 NASDAQ NATR Thu, Mar 16, 2006 17.08 17.22 16.52 16.69
3928 NASDAQ NATR Wed, Mar 15, 2006 16.83 16.94 16.18 16.86
3927 NASDAQ NATR Tue, Mar 14, 2006 16.39 16.99 16.38 16.73
3926 NASDAQ NATR Mon, Mar 13, 2006 16.71 17.03 16.42 16.65
3925 NASDAQ NATR Fri, Mar 10, 2006 16.45 16.71 16.10 16.70
3924 NASDAQ NATR Thu, Mar 9, 2006 16.60 16.71 16.44 16.50
3923 NASDAQ NATR Wed, Mar 8, 2006 16.44 17.08 16.44 16.63
3922 NASDAQ NATR Tue, Mar 7, 2006 16.38 16.57 16.35 16.50
3921 NASDAQ NATR Mon, Mar 6, 2006 16.73 16.73 16.32 16.44
3920 NASDAQ NATR Fri, Mar 3, 2006 16.99 17.21 16.71 16.87
3919 NASDAQ NATR Thu, Mar 2, 2006 17.08 17.25 17.00 17.17
3918 NASDAQ NATR Wed, Mar 1, 2006 17.12 17.31 16.85 17.17
3917 NASDAQ NATR Tue, Feb 28, 2006 16.97 17.28 16.94 16.97
3916 NASDAQ NATR Mon, Feb 27, 2006 17.16 17.37 17.00 17.04
3915 NASDAQ NATR Fri, Feb 24, 2006 17.20 17.20 16.95 17.03
3914 NASDAQ NATR Thu, Feb 23, 2006 16.99 17.58 16.95 17.08
3913 NASDAQ NATR Wed, Feb 22, 2006 16.79 17.23 16.43 17.07
3912 NASDAQ NATR Tue, Feb 21, 2006 17.06 17.23 16.61 16.75
3911 NASDAQ NATR Fri, Feb 17, 2006 17.90 18.50 16.33 17.00
3910 NASDAQ NATR Thu, Feb 16, 2006 17.73 18.33 17.71 18.00
3909 NASDAQ NATR Wed, Feb 15, 2006 18.09 18.50 17.70 18.30
3908 NASDAQ NATR Tue, Feb 14, 2006 17.78 18.28 17.70 18.18
3907 NASDAQ NATR Mon, Feb 13, 2006 18.39 18.49 17.77 17.82
3906 NASDAQ NATR Fri, Feb 10, 2006 18.26 18.48 18.00 18.30
3905 NASDAQ NATR Thu, Feb 9, 2006 18.14 18.63 18.10 18.40
3904 NASDAQ NATR Wed, Feb 8, 2006 18.00 18.19 17.95 18.14
3903 NASDAQ NATR Tue, Feb 7, 2006 17.47 18.24 17.47 18.01
3902 NASDAQ NATR Mon, Feb 6, 2006 17.50 17.61 17.45 17.61
3901 NASDAQ NATR Fri, Feb 3, 2006 17.51 17.83 17.46 17.62
3900 NASDAQ NATR Thu, Feb 2, 2006 17.56 18.00 17.40 17.60
3899 NASDAQ NATR Wed, Feb 1, 2006 17.41 17.99 17.41 17.84
3898 NASDAQ NATR Tue, Jan 31, 2006 17.39 17.68 17.19 17.66
3897 NASDAQ NATR Mon, Jan 30, 2006 17.17 18.00 17.17 17.90
3896 NASDAQ NATR Fri, Jan 27, 2006 17.28 17.55 17.17 17.54
3895 NASDAQ NATR Thu, Jan 26, 2006 17.43 17.52 17.00 17.50
3894 NASDAQ NATR Wed, Jan 25, 2006 17.63 18.50 17.04 17.17
3893 NASDAQ NATR Tue, Jan 24, 2006 17.26 17.55 16.92 17.54
3892 NASDAQ NATR Mon, Jan 23, 2006 17.15 17.29 16.87 17.03
3891 NASDAQ NATR Fri, Jan 20, 2006 17.00 17.11 16.90 16.90
3890 NASDAQ NATR Thu, Jan 19, 2006 17.15 17.24 16.80 17.16
3889 NASDAQ NATR Wed, Jan 18, 2006 17.20 17.47 16.75 16.97
3888 NASDAQ NATR Tue, Jan 17, 2006 16.94 17.23 16.94 17.07
3887 NASDAQ NATR Fri, Jan 13, 2006 16.85 18.00 16.71 16.97
3886 NASDAQ NATR Thu, Jan 12, 2006 17.40 17.45 16.36 16.71
3885 NASDAQ NATR Wed, Jan 11, 2006 17.49 17.56 17.27 17.52
3884 NASDAQ NATR Tue, Jan 10, 2006 17.70 17.70 17.44 17.54
3883 NASDAQ NATR Mon, Jan 9, 2006 17.61 18.25 17.55 17.85
3882 NASDAQ NATR Fri, Jan 6, 2006 17.53 17.65 17.40 17.65
3881 NASDAQ NATR Thu, Jan 5, 2006 17.32 17.50 17.22 17.40
3880 NASDAQ NATR Wed, Jan 4, 2006 18.29 18.88 17.44 17.45
3879 NASDAQ NATR Tue, Jan 3, 2006 17.98 18.53 17.97 18.21
3878 NASDAQ NATR Fri, Dec 30, 2005 17.98 18.31 17.98 18.08
3877 NASDAQ NATR Thu, Dec 29, 2005 17.93 18.38 17.93 18.00
3876 NASDAQ NATR Wed, Dec 28, 2005 17.88 18.22 17.88 18.07
3875 NASDAQ NATR Tue, Dec 27, 2005 18.20 18.25 17.95 17.95
3874 NASDAQ NATR Fri, Dec 23, 2005 18.20 18.42 18.00 18.20
3873 NASDAQ NATR Thu, Dec 22, 2005 17.88 18.29 17.88 18.00
3872 NASDAQ NATR Wed, Dec 21, 2005 17.89 18.19 17.89 17.95
3871 NASDAQ NATR Tue, Dec 20, 2005 17.70 18.17 17.62 17.97
3870 NASDAQ NATR Mon, Dec 19, 2005 17.89 18.26 17.80 17.91
3869 NASDAQ NATR Fri, Dec 16, 2005 18.11 18.29 17.98 18.04
3868 NASDAQ NATR Thu, Dec 15, 2005 17.90 18.15 17.83 18.06
3867 NASDAQ NATR Wed, Dec 14, 2005 17.56 18.03 17.42 18.03
3866 NASDAQ NATR Tue, Dec 13, 2005 18.40 18.40 17.35 17.66
3865 NASDAQ NATR Mon, Dec 12, 2005 18.43 18.49 18.22 18.26
3864 NASDAQ NATR Fri, Dec 9, 2005 18.49 18.58 18.12 18.29
3863 NASDAQ NATR Thu, Dec 8, 2005 18.75 18.79 18.43 18.67
3862 NASDAQ NATR Wed, Dec 7, 2005 18.98 19.16 18.68 18.85
3861 NASDAQ NATR Tue, Dec 6, 2005 19.20 19.36 19.00 19.04
3860 NASDAQ NATR Mon, Dec 5, 2005 19.47 19.47 19.03 19.16
3859 NASDAQ NATR Fri, Dec 2, 2005 19.64 19.64 19.01 19.14
3858 NASDAQ NATR Thu, Dec 1, 2005 18.59 20.06 18.59 19.84
3857 NASDAQ NATR Wed, Nov 30, 2005 18.03 18.66 18.03 18.41
3856 NASDAQ NATR Tue, Nov 29, 2005 18.11 18.28 18.05 18.28
3855 NASDAQ NATR Mon, Nov 28, 2005 18.29 18.48 17.75 18.15
3854 NASDAQ NATR Fri, Nov 25, 2005 18.30 18.59 17.59 18.47
3853 NASDAQ NATR Wed, Nov 23, 2005 18.74 18.83 17.60 18.51
3852 NASDAQ NATR Tue, Nov 22, 2005 19.00 19.20 18.89 18.89
3851 NASDAQ NATR Mon, Nov 21, 2005 19.29 19.41 18.90 19.00
3850 NASDAQ NATR Fri, Nov 18, 2005 19.80 19.80 19.00 19.45
3849 NASDAQ NATR Thu, Nov 17, 2005 19.63 19.63 19.33 19.47
3848 NASDAQ NATR Wed, Nov 16, 2005 19.99 19.99 19.31 19.37
3847 NASDAQ NATR Tue, Nov 15, 2005 19.94 20.00 19.67 19.87
3846 NASDAQ NATR Mon, Nov 14, 2005 19.63 19.99 19.63 19.79
3845 NASDAQ NATR Fri, Nov 11, 2005 19.60 19.95 18.75 19.81
3844 NASDAQ NATR Thu, Nov 10, 2005 19.25 19.77 18.97 19.77
3843 NASDAQ NATR Wed, Nov 9, 2005 19.28 19.43 18.97 19.11
3842 NASDAQ NATR Tue, Nov 8, 2005 18.90 19.23 18.90 19.16
3841 NASDAQ NATR Mon, Nov 7, 2005 19.64 19.64 18.84 19.05
3840 NASDAQ NATR Fri, Nov 4, 2005 19.40 19.45 18.87 19.33
3839 NASDAQ NATR Thu, Nov 3, 2005 19.10 19.87 19.02 19.41
3838 NASDAQ NATR Wed, Nov 2, 2005 19.10 19.11 18.72 19.09
3837 NASDAQ NATR Tue, Nov 1, 2005 19.25 19.39 18.91 19.04
3836 NASDAQ NATR Mon, Oct 31, 2005 19.08 19.40 18.61 19.35
3835 NASDAQ NATR Fri, Oct 28, 2005 18.30 19.11 18.25 19.05
3834 NASDAQ NATR Thu, Oct 27, 2005 18.61 18.61 18.25 18.29
3833 NASDAQ NATR Wed, Oct 26, 2005 18.72 19.50 18.58 18.58
3832 NASDAQ NATR Tue, Oct 25, 2005 19.00 19.23 17.57 18.72
3831 NASDAQ NATR Mon, Oct 24, 2005 20.31 20.73 20.13 20.60
3830 NASDAQ NATR Fri, Oct 21, 2005 20.70 21.15 20.35 20.42
3829 NASDAQ NATR Thu, Oct 20, 2005 21.06 21.16 20.42 21.00
3828 NASDAQ NATR Wed, Oct 19, 2005 20.01 20.90 19.92 20.90
3827 NASDAQ NATR Tue, Oct 18, 2005 20.81 20.81 19.80 20.12
3826 NASDAQ NATR Mon, Oct 17, 2005 20.84 20.85 20.15 20.66
3825 NASDAQ NATR Fri, Oct 14, 2005 20.76 20.93 20.43 20.74
3824 NASDAQ NATR Thu, Oct 13, 2005 20.50 20.76 20.36 20.46
3823 NASDAQ NATR Wed, Oct 12, 2005 20.44 21.10 20.44 20.47
3822 NASDAQ NATR Tue, Oct 11, 2005 21.40 21.54 20.61 20.62
3821 NASDAQ NATR Mon, Oct 10, 2005 21.22 21.29 21.07 21.19
3820 NASDAQ NATR Fri, Oct 7, 2005 20.65 21.42 20.65 21.25
3819 NASDAQ NATR Thu, Oct 6, 2005 20.95 21.69 20.58 20.69
3818 NASDAQ NATR Wed, Oct 5, 2005 21.54 21.68 20.89 20.94
3817 NASDAQ NATR Tue, Oct 4, 2005 22.50 22.50 21.64 21.75
3816 NASDAQ NATR Mon, Oct 3, 2005 23.09 23.09 22.10 22.29
3815 NASDAQ NATR Fri, Sep 30, 2005 22.56 23.50 22.26 23.24
3814 NASDAQ NATR Thu, Sep 29, 2005 22.80 22.80 22.31 22.73
3813 NASDAQ NATR Wed, Sep 28, 2005 22.35 22.82 22.30 22.74
3812 NASDAQ NATR Tue, Sep 27, 2005 22.55 23.09 21.87 22.82
3811 NASDAQ NATR Mon, Sep 26, 2005 22.67 22.67 21.61 22.40
3810 NASDAQ NATR Fri, Sep 23, 2005 21.76 22.68 21.10 22.52
3809 NASDAQ NATR Thu, Sep 22, 2005 22.07 22.07 21.58 21.80
3808 NASDAQ NATR Wed, Sep 21, 2005 22.79 22.98 22.04 22.24
3807 NASDAQ NATR Tue, Sep 20, 2005 22.56 23.19 22.56 22.90
3806 NASDAQ NATR Mon, Sep 19, 2005 22.52 22.52 22.03 22.45
3805 NASDAQ NATR Fri, Sep 16, 2005 22.83 22.83 22.25 22.58
3804 NASDAQ NATR Thu, Sep 15, 2005 22.47 22.80 21.56 22.65
3803 NASDAQ NATR Wed, Sep 14, 2005 23.04 23.19 22.50 22.61
3802 NASDAQ NATR Tue, Sep 13, 2005 22.78 23.50 22.77 22.82
3801 NASDAQ NATR Mon, Sep 12, 2005 22.71 22.90 22.45 22.77
3800 NASDAQ NATR Fri, Sep 9, 2005 22.88 22.88 22.51 22.72
3799 NASDAQ NATR Thu, Sep 8, 2005 22.81 23.09 22.47 22.71
3798 NASDAQ NATR Wed, Sep 7, 2005 22.27 23.89 22.01 22.73
3797 NASDAQ NATR Tue, Sep 6, 2005 21.50 22.39 21.49 22.32
3796 NASDAQ NATR Fri, Sep 2, 2005 21.47 21.58 21.29 21.57
3795 NASDAQ NATR Thu, Sep 1, 2005 21.59 21.60 21.17 21.59
3794 NASDAQ NATR Wed, Aug 31, 2005 21.24 21.61 21.07 21.60
3793 NASDAQ NATR Tue, Aug 30, 2005 21.50 21.50 20.94 21.19
3792 NASDAQ NATR Mon, Aug 29, 2005 20.87 21.44 20.87 21.35
3791 NASDAQ NATR Fri, Aug 26, 2005 21.07 21.32 20.99 20.99
3790 NASDAQ NATR Thu, Aug 25, 2005 21.42 21.47 21.13 21.23
3789 NASDAQ NATR Wed, Aug 24, 2005 21.34 21.69 21.20 21.41
3788 NASDAQ NATR Tue, Aug 23, 2005 21.00 21.50 20.70 21.40
3787 NASDAQ NATR Mon, Aug 22, 2005 21.43 21.49 21.01 21.10
3786 NASDAQ NATR Fri, Aug 19, 2005 21.45 22.20 20.85 21.49
3785 NASDAQ NATR Thu, Aug 18, 2005 21.25 21.58 21.09 21.50
3784 NASDAQ NATR Wed, Aug 17, 2005 21.30 21.39 21.24 21.26
3783 NASDAQ NATR Tue, Aug 16, 2005 21.41 21.69 21.30 21.39
3782 NASDAQ NATR Mon, Aug 15, 2005 21.30 21.73 21.25 21.49
3781 NASDAQ NATR Fri, Aug 12, 2005 21.64 21.77 21.25 21.50
3780 NASDAQ NATR Thu, Aug 11, 2005 21.89 22.09 21.30 21.74
3779 NASDAQ NATR Wed, Aug 10, 2005 21.65 21.83 21.10 21.59
3778 NASDAQ NATR Tue, Aug 9, 2005 21.09 21.62 21.09 21.45
3777 NASDAQ NATR Mon, Aug 8, 2005 21.65 21.72 20.86 21.30
3776 NASDAQ NATR Fri, Aug 5, 2005 22.00 22.22 21.29 21.38
3775 NASDAQ NATR Thu, Aug 4, 2005 21.24 22.79 21.24 22.28
3774 NASDAQ NATR Wed, Aug 3, 2005 21.69 21.69 21.05 21.33
3773 NASDAQ NATR Tue, Aug 2, 2005 20.39 21.85 20.18 21.82
3772 NASDAQ NATR Mon, Aug 1, 2005 19.98 20.64 19.72 20.56
3771 NASDAQ NATR Fri, Jul 29, 2005 20.30 20.50 19.81 19.95
3770 NASDAQ NATR Thu, Jul 28, 2005 19.93 20.47 19.69 20.46
3769 NASDAQ NATR Wed, Jul 27, 2005 19.58 20.02 19.33 19.98
3768 NASDAQ NATR Tue, Jul 26, 2005 19.06 19.74 18.19 19.58
3767 NASDAQ NATR Mon, Jul 25, 2005 19.08 19.08 18.69 19.05
3766 NASDAQ NATR Fri, Jul 22, 2005 19.27 19.31 18.80 19.04
3765 NASDAQ NATR Thu, Jul 21, 2005 19.34 19.60 19.04 19.21
3764 NASDAQ NATR Wed, Jul 20, 2005 19.45 19.54 19.16 19.48
3763 NASDAQ NATR Tue, Jul 19, 2005 19.90 20.60 18.90 19.46
3762 NASDAQ NATR Mon, Jul 18, 2005 20.70 20.99 20.47 20.85
3761 NASDAQ NATR Fri, Jul 15, 2005 21.09 21.24 19.95 20.74
3760 NASDAQ NATR Thu, Jul 14, 2005 19.85 21.45 19.76 21.17
3759 NASDAQ NATR Wed, Jul 13, 2005 19.00 19.94 18.77 19.65
3758 NASDAQ NATR Tue, Jul 12, 2005 18.44 18.44 17.43 17.69
3757 NASDAQ NATR Mon, Jul 11, 2005 17.84 18.30 17.62 18.27
3756 NASDAQ NATR Fri, Jul 8, 2005 17.34 17.94 17.13 17.93
3755 NASDAQ NATR Thu, Jul 7, 2005 16.67 17.50 16.59 17.32
3754 NASDAQ NATR Wed, Jul 6, 2005 17.66 17.71 17.45 17.54
3753 NASDAQ NATR Tue, Jul 5, 2005 16.89 17.58 16.89 17.58
3752 NASDAQ NATR Fri, Jul 1, 2005 17.76 17.76 16.73 17.12
3751 NASDAQ NATR Thu, Jun 30, 2005 17.50 17.74 17.34 17.44
3750 NASDAQ NATR Wed, Jun 29, 2005 16.68 17.51 16.68 17.33
3749 NASDAQ NATR Tue, Jun 28, 2005 16.64 17.31 16.37 16.85
3748 NASDAQ NATR Mon, Jun 27, 2005 16.46 16.56 16.31 16.45
3747 NASDAQ NATR Fri, Jun 24, 2005 17.14 17.24 16.49 16.49
3746 NASDAQ NATR Thu, Jun 23, 2005 17.34 17.60 17.13 17.14
3745 NASDAQ NATR Wed, Jun 22, 2005 18.05 18.20 17.08 17.47
3744 NASDAQ NATR Tue, Jun 21, 2005 17.71 17.94 17.43 17.83
3743 NASDAQ NATR Mon, Jun 20, 2005 17.11 17.84 17.07 17.71
3742 NASDAQ NATR Fri, Jun 17, 2005 14.94 17.20 14.62 17.18
3741 NASDAQ NATR Thu, Jun 16, 2005 17.21 17.35 17.03 17.20
3740 NASDAQ NATR Wed, Jun 15, 2005 17.47 17.58 17.11 17.34
3739 NASDAQ NATR Tue, Jun 14, 2005 16.84 17.60 16.84 17.20
3738 NASDAQ NATR Mon, Jun 13, 2005 16.68 17.00 16.50 17.00
3737 NASDAQ NATR Fri, Jun 10, 2005 16.87 16.90 16.62 16.76
3736 NASDAQ NATR Thu, Jun 9, 2005 16.86 16.87 16.35 16.67
3735 NASDAQ NATR Wed, Jun 8, 2005 16.82 16.97 16.47 16.67
3734 NASDAQ NATR Tue, Jun 7, 2005 16.57 16.99 16.29 16.43
3733 NASDAQ NATR Mon, Jun 6, 2005 16.21 16.57 16.15 16.46
3732 NASDAQ NATR Fri, Jun 3, 2005 16.41 16.48 16.05 16.38
3731 NASDAQ NATR Thu, Jun 2, 2005 15.96 16.57 15.96 16.57
3730 NASDAQ NATR Wed, Jun 1, 2005 16.52 16.60 16.12 16.24
3729 NASDAQ NATR Tue, May 31, 2005 16.36 16.64 16.04 16.47
3728 NASDAQ NATR Fri, May 27, 2005 16.45 16.45 15.97 16.23
3727 NASDAQ NATR Thu, May 26, 2005 15.87 16.12 15.85 16.08
3726 NASDAQ NATR Wed, May 25, 2005 16.00 16.06 15.81 15.87
3725 NASDAQ NATR Tue, May 24, 2005 16.62 16.87 15.82 16.20
3724 NASDAQ NATR Mon, May 23, 2005 16.31 16.84 16.31 16.50
3723 NASDAQ NATR Fri, May 20, 2005 16.55 16.74 16.41 16.74
3722 NASDAQ NATR Thu, May 19, 2005 16.25 16.52 15.99 16.38
3721 NASDAQ NATR Wed, May 18, 2005 16.15 16.64 15.88 16.53
3720 NASDAQ NATR Tue, May 17, 2005 16.01 16.01 14.99 15.87
3719 NASDAQ NATR Mon, May 16, 2005 15.01 16.05 15.01 16.01
3718 NASDAQ NATR Fri, May 13, 2005 15.24 15.24 15.00 15.09
3717 NASDAQ NATR Thu, May 12, 2005 15.40 16.06 15.27 15.45
3716 NASDAQ NATR Wed, May 11, 2005 15.30 15.44 15.20 15.36
3715 NASDAQ NATR Tue, May 10, 2005 15.52 15.57 15.20 15.37
3714 NASDAQ NATR Mon, May 9, 2005 15.87 15.89 15.55 15.56
3713 NASDAQ NATR Fri, May 6, 2005 16.05 16.15 15.56 15.75
3712 NASDAQ NATR Thu, May 5, 2005 15.97 16.35 15.64 15.97
3711 NASDAQ NATR Wed, May 4, 2005 15.76 16.01 15.30 16.01
3710 NASDAQ NATR Tue, May 3, 2005 15.41 15.76 15.35 15.76
3709 NASDAQ NATR Mon, May 2, 2005 15.06 15.84 15.00 15.58
3708 NASDAQ NATR Fri, Apr 29, 2005 15.03 15.05 14.16 14.99
3707 NASDAQ NATR Thu, Apr 28, 2005 15.42 15.50 15.04 15.04
3706 NASDAQ NATR Wed, Apr 27, 2005 15.57 15.63 15.40 15.47
3705 NASDAQ NATR Tue, Apr 26, 2005 15.81 15.85 15.52 15.63
3704 NASDAQ NATR Mon, Apr 25, 2005 16.13 16.13 15.71 15.73
3703 NASDAQ NATR Fri, Apr 22, 2005 15.78 16.02 15.70 15.88
3702 NASDAQ NATR Thu, Apr 21, 2005 15.38 15.99 15.31 15.70
3701 NASDAQ NATR Wed, Apr 20, 2005 15.45 15.80 15.18 15.38
3700 NASDAQ NATR Tue, Apr 19, 2005 15.35 15.70 12.50 15.58
3699 NASDAQ NATR Mon, Apr 18, 2005 15.67 16.25 15.55 16.16
3698 NASDAQ NATR Fri, Apr 15, 2005 15.96 15.97 15.50 15.63
3697 NASDAQ NATR Thu, Apr 14, 2005 16.61 17.45 15.81 15.98
3696 NASDAQ NATR Wed, Apr 13, 2005 16.82 17.10 16.58 16.80
3695 NASDAQ NATR Tue, Apr 12, 2005 16.74 16.99 16.60 16.99
3694 NASDAQ NATR Mon, Apr 11, 2005 16.83 17.37 16.72 16.94
3693 NASDAQ NATR Fri, Apr 8, 2005 16.92 17.19 16.90 17.00
3692 NASDAQ NATR Thu, Apr 7, 2005 16.74 17.16 16.74 17.16
3691 NASDAQ NATR Wed, Apr 6, 2005 17.31 17.50 16.88 17.03
3690 NASDAQ NATR Tue, Apr 5, 2005 16.75 17.70 16.66 17.16
3689 NASDAQ NATR Mon, Apr 4, 2005 16.59 17.00 16.34 16.92
3688 NASDAQ NATR Fri, Apr 1, 2005 17.26 17.34 16.61 16.82
3687 NASDAQ NATR Thu, Mar 31, 2005 17.46 17.52 17.06 17.17
3686 NASDAQ NATR Wed, Mar 30, 2005 16.68 17.51 16.45 17.37
3685 NASDAQ NATR Tue, Mar 29, 2005 17.35 17.49 16.44 16.58
3684 NASDAQ NATR Mon, Mar 28, 2005 17.53 17.92 17.18 17.18
3683 NASDAQ NATR Thu, Mar 24, 2005 17.89 17.99 17.36 17.48
3682 NASDAQ NATR Wed, Mar 23, 2005 17.80 17.84 17.55 17.63
3681 NASDAQ NATR Tue, Mar 22, 2005 17.49 18.03 16.87 17.90
3680 NASDAQ NATR Mon, Mar 21, 2005 17.19 17.66 16.92 17.18
3679 NASDAQ NATR Fri, Mar 18, 2005 18.09 18.20 17.25 17.25
3678 NASDAQ NATR Thu, Mar 17, 2005 18.25 18.26 17.56 17.91
3677 NASDAQ NATR Wed, Mar 16, 2005 17.35 18.36 17.35 17.89
3676 NASDAQ NATR Tue, Mar 15, 2005 18.02 18.02 17.21 17.45
3675 NASDAQ NATR Mon, Mar 14, 2005 17.70 18.19 17.33 17.59
3674 NASDAQ NATR Fri, Mar 11, 2005 18.05 18.19 17.69 17.85
3673 NASDAQ NATR Thu, Mar 10, 2005 17.55 18.47 17.55 17.63
3672 NASDAQ NATR Wed, Mar 9, 2005 16.54 18.48 16.54 17.68
3671 NASDAQ NATR Tue, Mar 8, 2005 18.38 18.85 16.31 16.54
3670 NASDAQ NATR Mon, Mar 7, 2005 18.09 18.80 18.09 18.55
3669 NASDAQ NATR Fri, Mar 4, 2005 18.00 19.00 18.00 18.43
3668 NASDAQ NATR Thu, Mar 3, 2005 18.75 19.15 18.06 18.14
3667 NASDAQ NATR Wed, Mar 2, 2005 18.88 19.51 18.88 19.14
3666 NASDAQ NATR Tue, Mar 1, 2005 19.49 19.92 19.07 19.50
3665 NASDAQ NATR Mon, Feb 28, 2005 19.10 19.49 19.10 19.27
3664 NASDAQ NATR Fri, Feb 25, 2005 19.01 19.45 18.95 19.24
3663 NASDAQ NATR Thu, Feb 24, 2005 19.01 19.49 18.85 19.16
3662 NASDAQ NATR Wed, Feb 23, 2005 18.82 19.80 18.53 19.00
3661 NASDAQ NATR Tue, Feb 22, 2005 19.87 19.87 18.63 18.68
3660 NASDAQ NATR Fri, Feb 18, 2005 20.17 20.17 19.68 19.84
3659 NASDAQ NATR Thu, Feb 17, 2005 20.95 20.95 19.72 19.78
3658 NASDAQ NATR Wed, Feb 16, 2005 20.04 20.94 19.86 20.94
3657 NASDAQ NATR Tue, Feb 15, 2005 19.87 21.00 18.01 20.64
3656 NASDAQ NATR Mon, Feb 14, 2005 20.68 20.68 20.21 20.65
3655 NASDAQ NATR Fri, Feb 11, 2005 20.19 20.84 19.93 20.53
3654 NASDAQ NATR Thu, Feb 10, 2005 21.06 21.65 20.33 20.36
3653 NASDAQ NATR Wed, Feb 9, 2005 21.84 21.99 21.14 21.24
3652 NASDAQ NATR Tue, Feb 8, 2005 21.45 22.66 21.38 22.14
3651 NASDAQ NATR Mon, Feb 7, 2005 21.29 21.47 20.97 21.33
3650 NASDAQ NATR Fri, Feb 4, 2005 21.01 21.38 20.85 21.30
3649 NASDAQ NATR Thu, Feb 3, 2005 21.52 21.52 20.95 21.20
3648 NASDAQ NATR Wed, Feb 2, 2005 21.46 21.46 20.93 21.43
3647 NASDAQ NATR Tue, Feb 1, 2005 19.80 21.75 19.36 21.20
3646 NASDAQ NATR Mon, Jan 31, 2005 19.11 20.10 18.89 20.05
3645 NASDAQ NATR Fri, Jan 28, 2005 19.50 19.50 18.62 18.80
3644 NASDAQ NATR Thu, Jan 27, 2005 19.34 19.51 18.70 19.19
3643 NASDAQ NATR Wed, Jan 26, 2005 18.51 19.07 18.22 19.07
3642 NASDAQ NATR Tue, Jan 25, 2005 19.00 19.12 18.29 18.75
3641 NASDAQ NATR Mon, Jan 24, 2005 19.75 19.75 19.01 19.36
3640 NASDAQ NATR Fri, Jan 21, 2005 19.40 19.82 18.88 19.44
3639 NASDAQ NATR Thu, Jan 20, 2005 19.02 19.28 18.71 19.26
3638 NASDAQ NATR Wed, Jan 19, 2005 19.89 19.89 19.32 19.32
3637 NASDAQ NATR Tue, Jan 18, 2005 20.04 20.04 19.33 19.90
3636 NASDAQ NATR Fri, Jan 14, 2005 19.55 19.85 19.25 19.77
3635 NASDAQ NATR Thu, Jan 13, 2005 19.62 19.62 19.10 19.37
3634 NASDAQ NATR Wed, Jan 12, 2005 19.38 19.60 18.91 19.22
3633 NASDAQ NATR Tue, Jan 11, 2005 19.08 19.36 18.36 19.24
3632 NASDAQ NATR Mon, Jan 10, 2005 19.86 20.57 19.06 19.30
3631 NASDAQ NATR Fri, Jan 7, 2005 20.50 20.50 19.73 20.09
3630 NASDAQ NATR Thu, Jan 6, 2005 19.51 20.42 19.51 19.95
3629 NASDAQ NATR Wed, Jan 5, 2005 20.41 20.46 19.60 19.60
3628 NASDAQ NATR Tue, Jan 4, 2005 20.39 21.04 20.20 20.78
3627 NASDAQ NATR Mon, Jan 3, 2005 20.50 20.50 19.39 20.39
3626 NASDAQ NATR Fri, Dec 31, 2004 20.23 20.59 19.80 20.36
3625 NASDAQ NATR Thu, Dec 30, 2004 19.87 20.11 19.62 19.71
3624 NASDAQ NATR Wed, Dec 29, 2004 20.97 20.97 19.89 20.13
3623 NASDAQ NATR Tue, Dec 28, 2004 21.08 21.36 20.47 21.14
3622 NASDAQ NATR Mon, Dec 27, 2004 20.75 21.09 20.42 20.42
3621 NASDAQ NATR Thu, Dec 23, 2004 20.49 20.75 20.00 20.53
3620 NASDAQ NATR Wed, Dec 22, 2004 20.15 20.50 20.10 20.13
3619 NASDAQ NATR Tue, Dec 21, 2004 20.50 20.50 19.98 20.15
3618 NASDAQ NATR Mon, Dec 20, 2004 19.62 20.67 19.54 20.30
3617 NASDAQ NATR Fri, Dec 17, 2004 20.00 20.00 19.25 20.00
3616 NASDAQ NATR Thu, Dec 16, 2004 19.58 19.99 19.01 19.99
3615 NASDAQ NATR Wed, Dec 15, 2004 18.54 19.65 18.54 19.18
3614 NASDAQ NATR Tue, Dec 14, 2004 17.88 19.18 17.72 18.87
3613 NASDAQ NATR Mon, Dec 13, 2004 18.26 18.48 17.88 18.12
3612 NASDAQ NATR Fri, Dec 10, 2004 17.49 18.13 17.21 17.94
3611 NASDAQ NATR Thu, Dec 9, 2004 17.19 17.79 17.19 17.37
3610 NASDAQ NATR Wed, Dec 8, 2004 16.87 17.47 16.87 17.41
3609 NASDAQ NATR Tue, Dec 7, 2004 17.24 17.31 16.93 16.93
3608 NASDAQ NATR Mon, Dec 6, 2004 17.44 17.50 16.87 16.91
3607 NASDAQ NATR Fri, Dec 3, 2004 17.12 17.45 16.91 17.45
3606 NASDAQ NATR Thu, Dec 2, 2004 16.95 17.23 16.40 17.02
3605 NASDAQ NATR Wed, Dec 1, 2004 16.50 17.43 16.40 16.98
3604 NASDAQ NATR Tue, Nov 30, 2004 17.38 17.50 16.44 16.74
3603 NASDAQ NATR Mon, Nov 29, 2004 16.70 17.79 16.70 17.57
3602 NASDAQ NATR Fri, Nov 26, 2004 16.89 16.90 16.46 16.46
3601 NASDAQ NATR Wed, Nov 24, 2004 16.69 16.69 16.47 16.52
3600 NASDAQ NATR Tue, Nov 23, 2004 16.50 16.61 16.25 16.61
3599 NASDAQ NATR Mon, Nov 22, 2004 16.21 16.55 16.21 16.50
3598 NASDAQ NATR Fri, Nov 19, 2004 16.24 16.68 16.20 16.24
3597 NASDAQ NATR Thu, Nov 18, 2004 16.87 16.87 16.33 16.63
3596 NASDAQ NATR Wed, Nov 17, 2004 16.55 16.75 16.43 16.52
3595 NASDAQ NATR Tue, Nov 16, 2004 16.31 16.59 16.30 16.47
3594 NASDAQ NATR Mon, Nov 15, 2004 16.84 16.90 16.22 16.45
3593 NASDAQ NATR Fri, Nov 12, 2004 15.85 16.81 15.64 16.81
3592 NASDAQ NATR Thu, Nov 11, 2004 15.83 15.92 15.63 15.75
3591 NASDAQ NATR Wed, Nov 10, 2004 15.75 15.85 15.68 15.75
3590 NASDAQ NATR Tue, Nov 9, 2004 15.58 15.75 15.53 15.67
3589 NASDAQ NATR Mon, Nov 8, 2004 15.61 15.82 15.50 15.63
3588 NASDAQ NATR Fri, Nov 5, 2004 15.50 15.95 15.50 15.72
3587 NASDAQ NATR Thu, Nov 4, 2004 15.65 15.90 15.30 15.70
3586 NASDAQ NATR Wed, Nov 3, 2004 15.20 15.50 15.18 15.50
3585 NASDAQ NATR Tue, Nov 2, 2004 14.88 15.28 14.88 15.15
3584 NASDAQ NATR Mon, Nov 1, 2004 15.00 15.23 14.86 15.20
3583 NASDAQ NATR Fri, Oct 29, 2004 14.83 15.25 14.83 15.13
3582 NASDAQ NATR Thu, Oct 28, 2004 14.55 15.02 14.54 15.00
3581 NASDAQ NATR Wed, Oct 27, 2004 14.39 14.60 14.01 14.45
3580 NASDAQ NATR Tue, Oct 26, 2004 14.26 14.50 13.98 14.17
3579 NASDAQ NATR Mon, Oct 25, 2004 14.53 14.70 13.76 14.41
3578 NASDAQ NATR Fri, Oct 22, 2004 14.87 14.90 14.70 14.70
3577 NASDAQ NATR Thu, Oct 21, 2004 14.90 15.06 14.66 15.00
3576 NASDAQ NATR Wed, Oct 20, 2004 15.00 15.25 14.67 14.97
3575 NASDAQ NATR Tue, Oct 19, 2004 14.70 14.84 14.35 14.79
3574 NASDAQ NATR Mon, Oct 18, 2004 14.41 14.81 14.32 14.54
3573 NASDAQ NATR Fri, Oct 15, 2004 14.37 14.80 14.37 14.64
3572 NASDAQ NATR Thu, Oct 14, 2004 14.57 14.82 14.40 14.40
3571 NASDAQ NATR Wed, Oct 13, 2004 14.76 15.00 14.45 14.59
3570 NASDAQ NATR Tue, Oct 12, 2004 14.83 14.83 14.55 14.61
3569 NASDAQ NATR Mon, Oct 11, 2004 14.62 14.77 14.58 14.58
3568 NASDAQ NATR Fri, Oct 8, 2004 14.86 15.06 14.60 14.66
3567 NASDAQ NATR Thu, Oct 7, 2004 14.86 15.01 14.86 14.91
3566 NASDAQ NATR Wed, Oct 6, 2004 14.83 15.08 14.57 15.08
3565 NASDAQ NATR Tue, Oct 5, 2004 14.87 15.24 14.87 15.05
3564 NASDAQ NATR Mon, Oct 4, 2004 15.40 15.40 14.92 14.99
3563 NASDAQ NATR Fri, Oct 1, 2004 14.82 15.48 14.62 15.40
3562 NASDAQ NATR Thu, Sep 30, 2004 15.30 15.30 14.77 15.17
3561 NASDAQ NATR Wed, Sep 29, 2004 15.00 15.18 14.75 15.07
3560 NASDAQ NATR Tue, Sep 28, 2004 14.80 15.17 14.80 15.01
3559 NASDAQ NATR Mon, Sep 27, 2004 14.65 14.87 14.63 14.73
3558 NASDAQ NATR Fri, Sep 24, 2004 14.75 15.06 14.75 14.92
3557 NASDAQ NATR Thu, Sep 23, 2004 14.65 15.15 14.65 14.83
3556 NASDAQ NATR Wed, Sep 22, 2004 14.81 15.11 14.62 14.72
3555 NASDAQ NATR Tue, Sep 21, 2004 14.66 15.22 14.65 15.09
3554 NASDAQ NATR Mon, Sep 20, 2004 14.19 15.25 14.19 15.08
3553 NASDAQ NATR Fri, Sep 17, 2004 15.14 15.59 14.35 15.11
3552 NASDAQ NATR Thu, Sep 16, 2004 14.95 14.95 14.48 14.89
3551 NASDAQ NATR Wed, Sep 15, 2004 14.99 15.00 14.83 14.97
3550 NASDAQ NATR Tue, Sep 14, 2004 15.46 15.46 14.84 14.97
3549 NASDAQ NATR Mon, Sep 13, 2004 15.47 15.62 14.99 15.09
3548 NASDAQ NATR Fri, Sep 10, 2004 15.75 15.75 15.33 15.44
3547 NASDAQ NATR Thu, Sep 9, 2004 15.49 15.86 15.39 15.39
3546 NASDAQ NATR Wed, Sep 8, 2004 15.60 16.00 15.60 15.81
3545 NASDAQ NATR Tue, Sep 7, 2004 14.82 16.00 14.80 15.98
3544 NASDAQ NATR Fri, Sep 3, 2004 15.06 15.12 14.72 15.01
3543 NASDAQ NATR Thu, Sep 2, 2004 15.16 15.16 14.70 15.13
3542 NASDAQ NATR Wed, Sep 1, 2004 14.62 15.41 14.62 14.85
3541 NASDAQ NATR Tue, Aug 31, 2004 14.62 14.93 14.61 14.79
3540 NASDAQ NATR Mon, Aug 30, 2004 15.14 15.14 14.66 14.71
3539 NASDAQ NATR Fri, Aug 27, 2004 14.79 15.00 14.77 15.00
3538 NASDAQ NATR Thu, Aug 26, 2004 14.87 14.98 14.69 14.94
3537 NASDAQ NATR Wed, Aug 25, 2004 14.95 15.00 14.65 15.00
3536 NASDAQ NATR Tue, Aug 24, 2004 14.87 14.99 14.57 14.95
3535 NASDAQ NATR Mon, Aug 23, 2004 15.17 15.17 14.82 14.94
3534 NASDAQ NATR Fri, Aug 20, 2004 14.80 15.11 14.62 15.09
3533 NASDAQ NATR Thu, Aug 19, 2004 14.80 15.25 14.80 14.95
3532 NASDAQ NATR Wed, Aug 18, 2004 14.53 15.15 14.35 14.98
3531 NASDAQ NATR Tue, Aug 17, 2004 15.08 15.08 14.50 14.70
3530 NASDAQ NATR Mon, Aug 16, 2004 14.54 15.16 14.40 14.64
3529 NASDAQ NATR Fri, Aug 13, 2004 14.96 14.98 14.31 14.67
3528 NASDAQ NATR Thu, Aug 12, 2004 15.05 15.05 14.41 14.50
3527 NASDAQ NATR Wed, Aug 11, 2004 14.63 15.00 14.56 14.94
3526 NASDAQ NATR Tue, Aug 10, 2004 14.50 15.16 14.21 14.86
3525 NASDAQ NATR Mon, Aug 9, 2004 14.68 14.85 14.20 14.63
3524 NASDAQ NATR Fri, Aug 6, 2004 15.16 15.16 14.26 14.34
3523 NASDAQ NATR Thu, Aug 5, 2004 15.50 15.50 15.04 15.30
3522 NASDAQ NATR Wed, Aug 4, 2004 15.00 15.50 14.85 15.37
3521 NASDAQ NATR Tue, Aug 3, 2004 14.80 14.95 14.57 14.77
3520 NASDAQ NATR Mon, Aug 2, 2004 14.99 14.99 14.34 14.64
3519 NASDAQ NATR Fri, Jul 30, 2004 14.60 15.19 14.48 14.88
3518 NASDAQ NATR Thu, Jul 29, 2004 14.24 14.99 13.99 14.94
3517 NASDAQ NATR Wed, Jul 28, 2004 14.76 14.90 14.00 14.49
3516 NASDAQ NATR Tue, Jul 27, 2004 14.02 14.89 13.72 14.86
3515 NASDAQ NATR Mon, Jul 26, 2004 14.69 14.69 13.82 14.02
3514 NASDAQ NATR Fri, Jul 23, 2004 15.30 15.30 14.24 14.25
3513 NASDAQ NATR Thu, Jul 22, 2004 14.70 15.15 14.70 14.96
3512 NASDAQ NATR Wed, Jul 21, 2004 14.50 16.00 14.37 14.81
3511 NASDAQ NATR Tue, Jul 20, 2004 13.58 14.34 13.58 14.08
3510 NASDAQ NATR Mon, Jul 19, 2004 13.34 14.03 13.32 13.51
3509 NASDAQ NATR Fri, Jul 16, 2004 13.67 14.17 13.44 13.44
3508 NASDAQ NATR Thu, Jul 15, 2004 13.57 13.88 13.30 13.57
3507 NASDAQ NATR Wed, Jul 14, 2004 13.38 13.94 13.26 13.26
3506 NASDAQ NATR Tue, Jul 13, 2004 13.63 13.99 13.21 13.44
3505 NASDAQ NATR Mon, Jul 12, 2004 13.33 13.95 13.33 13.78
3504 NASDAQ NATR Fri, Jul 9, 2004 13.15 13.78 13.15 13.40
3503 NASDAQ NATR Thu, Jul 8, 2004 13.10 13.79 13.00 13.24
3502 NASDAQ NATR Wed, Jul 7, 2004 13.79 14.10 13.10 13.14
3501 NASDAQ NATR Tue, Jul 6, 2004 14.22 14.22 13.63 13.63
3500 NASDAQ NATR Fri, Jul 2, 2004 14.29 14.29 13.98 14.17
3499 NASDAQ NATR Thu, Jul 1, 2004 13.98 14.29 13.85 14.15
3498 NASDAQ NATR Wed, Jun 30, 2004 14.04 14.50 13.93 14.24
3497 NASDAQ NATR Tue, Jun 29, 2004 13.60 14.11 13.30 14.09
3496 NASDAQ NATR Mon, Jun 28, 2004 13.85 14.31 13.35 13.35
3495 NASDAQ NATR Fri, Jun 25, 2004 13.45 14.07 13.41 14.05
3494 NASDAQ NATR Thu, Jun 24, 2004 13.65 13.72 13.45 13.47
3493 NASDAQ NATR Wed, Jun 23, 2004 13.60 13.77 13.35 13.52
3492 NASDAQ NATR Tue, Jun 22, 2004 13.39 13.62 13.25 13.60
3491 NASDAQ NATR Mon, Jun 21, 2004 13.74 14.04 13.35 13.79
3490 NASDAQ NATR Fri, Jun 18, 2004 13.91 14.65 13.50 14.04
3489 NASDAQ NATR Thu, Jun 17, 2004 14.34 14.52 13.97 14.20
3488 NASDAQ NATR Wed, Jun 16, 2004 14.32 14.60 13.59 14.29
3487 NASDAQ NATR Tue, Jun 15, 2004 14.51 14.67 13.13 14.50
3486 NASDAQ NATR Mon, Jun 14, 2004 14.50 15.06 14.42 14.50
3485 NASDAQ NATR Thu, Jun 10, 2004 14.53 15.13 14.50 14.50
3484 NASDAQ NATR Wed, Jun 9, 2004 15.07 15.11 14.42 14.91
3483 NASDAQ NATR Tue, Jun 8, 2004 14.81 15.45 14.50 15.06
3482 NASDAQ NATR Mon, Jun 7, 2004 15.44 15.45 14.70 14.98
3481 NASDAQ NATR Fri, Jun 4, 2004 15.40 15.60 14.68 15.25
3480 NASDAQ NATR Thu, Jun 3, 2004 15.40 15.40 14.55 15.27
3479 NASDAQ NATR Wed, Jun 2, 2004 15.29 15.60 14.90 15.60
3478 NASDAQ NATR Tue, Jun 1, 2004 14.91 15.50 14.60 15.02
3477 NASDAQ NATR Fri, May 28, 2004 14.80 14.90 14.62 14.90
3476 NASDAQ NATR Thu, May 27, 2004 14.75 14.86 14.25 14.85
3475 NASDAQ NATR Wed, May 26, 2004 15.00 15.00 14.52 14.93
3474 NASDAQ NATR Tue, May 25, 2004 14.41 15.02 14.40 15.00
3473 NASDAQ NATR Mon, May 24, 2004 13.81 14.40 13.63 14.37
3472 NASDAQ NATR Fri, May 21, 2004 13.31 13.93 13.31 13.93
3471 NASDAQ NATR Thu, May 20, 2004 13.59 13.65 12.93 13.65
3470 NASDAQ NATR Wed, May 19, 2004 13.60 13.60 13.30 13.60
3469 NASDAQ NATR Tue, May 18, 2004 13.49 13.69 13.27 13.60
3468 NASDAQ NATR Mon, May 17, 2004 13.90 13.90 12.45 13.20
3467 NASDAQ NATR Fri, May 14, 2004 13.73 14.14 12.98 13.92
3466 NASDAQ NATR Thu, May 13, 2004 13.80 14.48 13.25 13.32
3465 NASDAQ NATR Wed, May 12, 2004 13.40 13.77 13.22 13.65
3464 NASDAQ NATR Tue, May 11, 2004 13.35 13.87 13.10 13.38
3463 NASDAQ NATR Mon, May 10, 2004 13.83 13.87 13.00 13.35
3462 NASDAQ NATR Fri, May 7, 2004 14.15 14.45 13.55 14.10
3461 NASDAQ NATR Thu, May 6, 2004 14.13 14.30 13.50 14.12
3460 NASDAQ NATR Wed, May 5, 2004 14.85 14.85 13.96 13.99
3459 NASDAQ NATR Tue, May 4, 2004 14.61 14.85 14.58 14.75
3458 NASDAQ NATR Mon, May 3, 2004 14.72 14.79 14.39 14.65
3457 NASDAQ NATR Fri, Apr 30, 2004 14.55 14.85 14.42 14.50
3456 NASDAQ NATR Thu, Apr 29, 2004 14.64 15.00 14.40 14.79
3455 NASDAQ NATR Wed, Apr 28, 2004 14.83 14.85 14.44 14.66
3454 NASDAQ NATR Tue, Apr 27, 2004 14.39 15.02 14.10 14.76
3453 NASDAQ NATR Mon, Apr 26, 2004 15.00 15.00 14.43 14.52
3452 NASDAQ NATR Fri, Apr 23, 2004 14.40 14.85 14.27 14.72
3451 NASDAQ NATR Thu, Apr 22, 2004 14.22 14.73 13.72 14.72
3450 NASDAQ NATR Wed, Apr 21, 2004 14.05 14.50 13.80 14.00
3449 NASDAQ NATR Tue, Apr 20, 2004 14.36 15.19 14.23 14.40
3448 NASDAQ NATR Mon, Apr 19, 2004 14.08 14.49 13.30 14.23
3447 NASDAQ NATR Fri, Apr 16, 2004 14.33 14.55 14.01 14.25
3446 NASDAQ NATR Thu, Apr 15, 2004 14.30 15.00 13.97 14.36
3445 NASDAQ NATR Wed, Apr 14, 2004 13.75 14.51 13.75 14.50
3444 NASDAQ NATR Tue, Apr 13, 2004 14.77 14.95 14.04 14.13
3443 NASDAQ NATR Mon, Apr 12, 2004 14.28 14.75 13.90 14.49
3442 NASDAQ NATR Thu, Apr 8, 2004 14.93 14.93 14.28 14.46
3441 NASDAQ NATR Wed, Apr 7, 2004 15.07 15.16 14.46 14.77
3440 NASDAQ NATR Tue, Apr 6, 2004 15.11 15.25 14.67 15.09
3439 NASDAQ NATR Mon, Apr 5, 2004 14.50 15.69 14.42 15.26
3438 NASDAQ NATR Fri, Apr 2, 2004 14.46 14.66 14.25 14.51
3437 NASDAQ NATR Thu, Apr 1, 2004 14.55 14.84 14.25 14.44
3436 NASDAQ NATR Wed, Mar 31, 2004 13.90 14.90 13.60 14.84
3435 NASDAQ NATR Tue, Mar 30, 2004 13.75 14.35 13.50 14.30
3434 NASDAQ NATR Mon, Mar 29, 2004 13.80 14.34 13.76 13.99
3433 NASDAQ NATR Fri, Mar 26, 2004 13.81 14.07 13.26 14.05
3432 NASDAQ NATR Thu, Mar 25, 2004 13.93 14.15 13.82 14.07
3431 NASDAQ NATR Wed, Mar 24, 2004 13.65 14.20 13.13 13.99
3430 NASDAQ NATR Tue, Mar 23, 2004 14.12 14.20 13.80 13.80
3429 NASDAQ NATR Mon, Mar 22, 2004 13.80 14.16 13.15 14.12
3428 NASDAQ NATR Fri, Mar 19, 2004 14.27 14.27 13.81 13.89
3427 NASDAQ NATR Thu, Mar 18, 2004 13.80 14.13 13.80 13.85
3426 NASDAQ NATR Wed, Mar 17, 2004 14.08 14.40 13.78 14.01
3425 NASDAQ NATR Tue, Mar 16, 2004 13.75 14.20 13.75 14.00
3424 NASDAQ NATR Mon, Mar 15, 2004 13.66 14.06 13.50 14.00
3423 NASDAQ NATR Fri, Mar 12, 2004 13.60 14.00 13.50 14.00
3422 NASDAQ NATR Thu, Mar 11, 2004 13.95 14.15 13.01 13.65
3421 NASDAQ NATR Wed, Mar 10, 2004 13.93 14.11 13.00 13.77
3420 NASDAQ NATR Tue, Mar 9, 2004 13.70 13.85 13.27 13.72
3419 NASDAQ NATR Mon, Mar 8, 2004 12.90 14.99 12.85 13.76
3418 NASDAQ NATR Fri, Mar 5, 2004 13.35 13.35 12.37 12.93
3417 NASDAQ NATR Thu, Mar 4, 2004 12.90 13.15 12.54 13.15
3416 NASDAQ NATR Wed, Mar 3, 2004 12.86 13.24 12.51 13.02
3415 NASDAQ NATR Tue, Mar 2, 2004 13.00 13.01 12.74 12.85
3414 NASDAQ NATR Mon, Mar 1, 2004 12.50 13.00 12.41 13.00
3413 NASDAQ NATR Fri, Feb 27, 2004 11.87 12.64 11.73 12.50
3412 NASDAQ NATR Thu, Feb 26, 2004 11.45 12.19 11.27 12.19
3411 NASDAQ NATR Wed, Feb 25, 2004 9.70 11.71 9.70 11.50
3410 NASDAQ NATR Tue, Feb 24, 2004 9.01 9.68 8.90 9.42
3409 NASDAQ NATR Mon, Feb 23, 2004 9.08 9.29 8.90 9.14
3408 NASDAQ NATR Fri, Feb 20, 2004 9.06 9.31 9.05 9.06
3407 NASDAQ NATR Thu, Feb 19, 2004 9.02 9.30 9.02 9.10
3406 NASDAQ NATR Wed, Feb 18, 2004 9.28 9.28 9.03 9.03
3405 NASDAQ NATR Tue, Feb 17, 2004 9.28 9.52 9.28 9.32
3404 NASDAQ NATR Fri, Feb 13, 2004 9.50 9.70 9.30 9.30
3403 NASDAQ NATR Thu, Feb 12, 2004 9.70 9.70 9.51 9.51
3402 NASDAQ NATR Wed, Feb 11, 2004 9.89 9.89 9.68 9.69
3401 NASDAQ NATR Tue, Feb 10, 2004 9.23 9.68 9.05 9.68
3400 NASDAQ NATR Mon, Feb 9, 2004 9.25 9.25 9.00 9.15
3399 NASDAQ NATR Fri, Feb 6, 2004 8.47 9.25 8.46 9.23
3398 NASDAQ NATR Thu, Feb 5, 2004 8.40 8.77 8.40 8.55
3397 NASDAQ NATR Wed, Feb 4, 2004 8.50 8.60 8.41 8.55
3396 NASDAQ NATR Tue, Feb 3, 2004 8.42 8.59 8.42 8.54
3395 NASDAQ NATR Mon, Feb 2, 2004 8.30 8.51 8.30 8.41
3394 NASDAQ NATR Fri, Jan 30, 2004 8.30 8.40 8.30 8.30
3393 NASDAQ NATR Thu, Jan 29, 2004 8.26 8.45 8.26 8.42
3392 NASDAQ NATR Wed, Jan 28, 2004 8.44 8.45 8.35 8.35
3391 NASDAQ NATR Tue, Jan 27, 2004 8.45 8.45 8.35 8.36
3390 NASDAQ NATR Mon, Jan 26, 2004 8.30 8.47 8.30 8.42
3389 NASDAQ NATR Fri, Jan 23, 2004 8.35 8.50 8.30 8.45
3388 NASDAQ NATR Thu, Jan 22, 2004 8.49 8.50 8.25 8.35
3387 NASDAQ NATR Wed, Jan 21, 2004 8.51 8.59 8.33 8.39
3386 NASDAQ NATR Tue, Jan 20, 2004 8.60 8.60 8.39 8.46
3385 NASDAQ NATR Fri, Jan 16, 2004 8.53 8.60 8.41 8.41
3384 NASDAQ NATR Thu, Jan 15, 2004 8.40 8.64 8.39 8.59
3383 NASDAQ NATR Wed, Jan 14, 2004 8.70 8.70 8.49 8.70
3382 NASDAQ NATR Tue, Jan 13, 2004 8.33 8.77 8.26 8.70
3381 NASDAQ NATR Mon, Jan 12, 2004 8.88 8.88 8.34 8.37
3380 NASDAQ NATR Fri, Jan 9, 2004 8.54 8.70 8.50 8.50
3379 NASDAQ NATR Thu, Jan 8, 2004 8.56 8.70 8.56 8.70
3378 NASDAQ NATR Wed, Jan 7, 2004 8.40 8.75 8.40 8.69
3377 NASDAQ NATR Tue, Jan 6, 2004 8.75 8.75 8.40 8.40
3376 NASDAQ NATR Mon, Jan 5, 2004 8.40 8.84 8.40 8.75
3375 NASDAQ NATR Fri, Jan 2, 2004 8.25 8.66 8.25 8.55
3374 NASDAQ NATR Wed, Dec 31, 2003 8.35 8.50 8.35 8.42
3373 NASDAQ NATR Tue, Dec 30, 2003 8.32 8.50 8.14 8.45
3372 NASDAQ NATR Mon, Dec 29, 2003 8.00 8.48 8.00 8.47
3371 NASDAQ NATR Fri, Dec 26, 2003 8.02 8.40 8.02 8.40
3370 NASDAQ NATR Wed, Dec 24, 2003 8.46 8.46 8.04 8.04
3369 NASDAQ NATR Tue, Dec 23, 2003 8.40 8.50 7.71 8.44
3368 NASDAQ NATR Mon, Dec 22, 2003 8.01 8.20 7.72 7.88
3367 NASDAQ NATR Fri, Dec 19, 2003 8.10 8.10 7.76 7.82
3366 NASDAQ NATR Thu, Dec 18, 2003 8.06 8.25 8.03 8.05
3365 NASDAQ NATR Wed, Dec 17, 2003 8.07 8.23 8.06 8.15
3364 NASDAQ NATR Tue, Dec 16, 2003 8.02 8.42 8.02 8.07
3363 NASDAQ NATR Mon, Dec 15, 2003 8.90 8.90 8.10 8.10
3362 NASDAQ NATR Fri, Dec 12, 2003 8.47 8.75 8.17 8.43
3361 NASDAQ NATR Thu, Dec 11, 2003 8.10 8.76 8.06 8.22
3360 NASDAQ NATR Wed, Dec 10, 2003 8.25 8.60 8.08 8.11
3359 NASDAQ NATR Tue, Dec 9, 2003 8.15 8.58 8.07 8.26
3358 NASDAQ NATR Mon, Dec 8, 2003 8.35 8.40 8.15 8.29
3357 NASDAQ NATR Fri, Dec 5, 2003 8.14 8.40 8.08 8.21
3356 NASDAQ NATR Thu, Dec 4, 2003 8.07 8.40 8.07 8.30
3355 NASDAQ NATR Wed, Dec 3, 2003 8.36 8.37 8.09 8.16
3354 NASDAQ NATR Tue, Dec 2, 2003 8.10 8.38 8.08 8.30
3353 NASDAQ NATR Mon, Dec 1, 2003 8.21 8.29 8.07 8.10
3352 NASDAQ NATR Fri, Nov 28, 2003 7.97 8.31 7.97 8.07
3351 NASDAQ NATR Wed, Nov 26, 2003 7.85 8.38 7.85 8.21
3350 NASDAQ NATR Tue, Nov 25, 2003 7.89 8.22 7.88 8.00
3349 NASDAQ NATR Mon, Nov 24, 2003 7.95 8.12 7.82 8.09
3348 NASDAQ NATR Fri, Nov 21, 2003 7.95 7.98 7.70 7.95
3347 NASDAQ NATR Thu, Nov 20, 2003 7.83 8.00 7.61 7.95
3346 NASDAQ NATR Wed, Nov 19, 2003 7.78 7.90 7.70 7.87
3345 NASDAQ NATR Tue, Nov 18, 2003 8.00 8.00 7.70 7.93
3344 NASDAQ NATR Mon, Nov 17, 2003 7.99 8.19 7.97 7.99
3343 NASDAQ NATR Fri, Nov 14, 2003 8.11 8.30 7.97 7.98
3342 NASDAQ NATR Thu, Nov 13, 2003 8.33 8.33 7.99 8.25
3341 NASDAQ NATR Wed, Nov 12, 2003 8.00 8.49 8.00 8.34
3340 NASDAQ NATR Tue, Nov 11, 2003 8.03 8.37 8.03 8.15
3339 NASDAQ NATR Mon, Nov 10, 2003 8.35 8.44 8.06 8.25
3338 NASDAQ NATR Fri, Nov 7, 2003 8.36 8.50 8.01 8.45
3337 NASDAQ NATR Thu, Nov 6, 2003 8.36 8.36 8.13 8.24
3336 NASDAQ NATR Wed, Nov 5, 2003 8.10 8.37 8.06 8.30
3335 NASDAQ NATR Tue, Nov 4, 2003 8.27 8.27 8.08 8.22
3334 NASDAQ NATR Mon, Nov 3, 2003 7.90 8.37 7.87 8.28
3333 NASDAQ NATR Fri, Oct 31, 2003 8.36 8.55 7.99 8.13
3332 NASDAQ NATR Thu, Oct 30, 2003 8.41 8.55 8.22 8.45
3331 NASDAQ NATR Wed, Oct 29, 2003 8.45 8.51 8.12 8.50
3330 NASDAQ NATR Tue, Oct 28, 2003 8.25 8.44 8.00 8.43
3329 NASDAQ NATR Mon, Oct 27, 2003 7.70 8.42 7.64 8.40
3328 NASDAQ NATR Fri, Oct 24, 2003 7.81 7.86 7.75 7.76
3327 NASDAQ NATR Thu, Oct 23, 2003 7.90 8.00 7.78 7.85
3326 NASDAQ NATR Wed, Oct 22, 2003 8.00 8.18 7.90 7.91
3325 NASDAQ NATR Tue, Oct 21, 2003 7.90 8.36 7.90 8.28
3324 NASDAQ NATR Mon, Oct 20, 2003 8.10 8.38 7.90 7.92
3323 NASDAQ NATR Fri, Oct 17, 2003 8.39 8.39 7.96 7.98
3322 NASDAQ NATR Thu, Oct 16, 2003 8.66 8.66 8.27 8.27
3321 NASDAQ NATR Wed, Oct 15, 2003 8.78 8.89 8.75 8.84
3320 NASDAQ NATR Tue, Oct 14, 2003 8.95 8.97 8.70 8.80
3319 NASDAQ NATR Mon, Oct 13, 2003 8.70 9.03 8.50 8.78
3318 NASDAQ NATR Fri, Oct 10, 2003 8.89 8.90 8.49 8.90
3317 NASDAQ NATR Thu, Oct 9, 2003 8.67 8.90 8.43 8.89
3316 NASDAQ NATR Wed, Oct 8, 2003 9.00 9.00 8.59 8.75
3315 NASDAQ NATR Tue, Oct 7, 2003 8.44 8.86 8.15 8.86
3314 NASDAQ NATR Mon, Oct 6, 2003 8.35 8.74 8.02 8.59
3313 NASDAQ NATR Fri, Oct 3, 2003 8.85 9.00 7.92 8.24
3312 NASDAQ NATR Thu, Oct 2, 2003 8.89 8.90 8.55 8.89
3311 NASDAQ NATR Wed, Oct 1, 2003 8.28 8.90 8.23 8.90
3310 NASDAQ NATR Tue, Sep 30, 2003 8.05 8.36 8.05 8.30
3309 NASDAQ NATR Mon, Sep 29, 2003 8.01 8.35 8.01 8.06
3308 NASDAQ NATR Fri, Sep 26, 2003 8.23 8.23 8.00 8.00
3307 NASDAQ NATR Thu, Sep 25, 2003 8.05 8.47 8.05 8.37
3306 NASDAQ NATR Wed, Sep 24, 2003 8.07 8.41 8.07 8.08
3305 NASDAQ NATR Tue, Sep 23, 2003 8.07 8.33 8.05 8.33
3304 NASDAQ NATR Mon, Sep 22, 2003 8.41 8.50 8.07 8.14
3303 NASDAQ NATR Fri, Sep 19, 2003 8.37 8.51 8.36 8.36
3302 NASDAQ NATR Thu, Sep 18, 2003 8.37 8.44 8.36 8.36
3301 NASDAQ NATR Wed, Sep 17, 2003 8.10 8.43 8.10 8.36
3300 NASDAQ NATR Tue, Sep 16, 2003 8.45 8.53 7.75 8.15
3299 NASDAQ NATR Mon, Sep 15, 2003 8.11 8.71 8.11 8.36
3298 NASDAQ NATR Fri, Sep 12, 2003 8.18 8.48 8.16 8.48
3297 NASDAQ NATR Thu, Sep 11, 2003 8.07 8.65 8.07 8.52
3296 NASDAQ NATR Wed, Sep 10, 2003 8.31 8.35 8.01 8.29
3295 NASDAQ NATR Tue, Sep 9, 2003 8.33 8.50 8.32 8.34
3294 NASDAQ NATR Mon, Sep 8, 2003 8.98 8.98 8.05 8.54
3293 NASDAQ NATR Fri, Sep 5, 2003 8.97 9.03 8.59 8.60
3292 NASDAQ NATR Thu, Sep 4, 2003 8.58 9.19 8.44 9.09
3291 NASDAQ NATR Wed, Sep 3, 2003 8.56 8.75 8.21 8.73
3290 NASDAQ NATR Tue, Sep 2, 2003 8.50 8.69 8.30 8.66
3289 NASDAQ NATR Fri, Aug 29, 2003 8.52 8.54 8.45 8.47
3288 NASDAQ NATR Thu, Aug 28, 2003 8.30 8.59 8.22 8.49
3287 NASDAQ NATR Wed, Aug 27, 2003 8.45 8.50 8.07 8.47
3286 NASDAQ NATR Tue, Aug 26, 2003 8.11 8.46 8.10 8.46
3285 NASDAQ NATR Mon, Aug 25, 2003 8.06 8.38 8.00 8.15
3284 NASDAQ NATR Fri, Aug 22, 2003 8.60 8.74 8.06 8.06
3283 NASDAQ NATR Thu, Aug 21, 2003 8.52 8.65 8.30 8.53
3282 NASDAQ NATR Wed, Aug 20, 2003 8.20 8.74 8.06 8.29
3281 NASDAQ NATR Tue, Aug 19, 2003 8.09 8.14 7.81 8.14
3280 NASDAQ NATR Mon, Aug 18, 2003 7.90 8.00 7.84 7.93
3279 NASDAQ NATR Fri, Aug 15, 2003 7.71 7.99 7.65 7.99
3278 NASDAQ NATR Thu, Aug 14, 2003 7.70 7.84 7.50 7.74
3277 NASDAQ NATR Wed, Aug 13, 2003 7.76 7.89 7.70 7.71
3276 NASDAQ NATR Tue, Aug 12, 2003 7.68 7.99 7.68 7.89
3275 NASDAQ NATR Mon, Aug 11, 2003 7.52 7.90 7.52 7.84
3274 NASDAQ NATR Fri, Aug 8, 2003 7.33 7.46 7.33 7.41
3273 NASDAQ NATR Thu, Aug 7, 2003 7.70 7.70 7.10 7.44
3272 NASDAQ NATR Wed, Aug 6, 2003 7.40 7.65 7.11 7.65
3271 NASDAQ NATR Tue, Aug 5, 2003 7.71 7.84 7.38 7.47
3270 NASDAQ NATR Mon, Aug 4, 2003 7.86 8.02 7.70 7.70
3269 NASDAQ NATR Fri, Aug 1, 2003 8.20 8.20 7.89 7.94
3268 NASDAQ NATR Thu, Jul 31, 2003 7.94 8.25 7.94 8.00
3267 NASDAQ NATR Wed, Jul 30, 2003 7.76 8.25 7.25 8.08
3266 NASDAQ NATR Tue, Jul 29, 2003 7.92 8.05 7.42 7.75
3265 NASDAQ NATR Mon, Jul 28, 2003 7.83 8.10 7.76 7.90
3264 NASDAQ NATR Fri, Jul 25, 2003 7.90 8.07 7.75 7.91
3263 NASDAQ NATR Thu, Jul 24, 2003 8.13 8.30 7.83 8.10
3262 NASDAQ NATR Wed, Jul 23, 2003 8.17 8.36 8.01 8.13
3261 NASDAQ NATR Tue, Jul 22, 2003 7.75 8.25 7.75 8.24
3260 NASDAQ NATR Mon, Jul 21, 2003 7.85 8.25 7.72 7.72
3259 NASDAQ NATR Fri, Jul 18, 2003 7.81 8.29 7.65 7.86
3258 NASDAQ NATR Thu, Jul 17, 2003 8.02 8.25 7.69 7.81
3257 NASDAQ NATR Wed, Jul 16, 2003 8.00 8.32 8.00 8.32
3256 NASDAQ NATR Tue, Jul 15, 2003 8.10 8.24 8.00 8.08
3255 NASDAQ NATR Mon, Jul 14, 2003 8.39 8.62 8.10 8.20
3254 NASDAQ NATR Fri, Jul 11, 2003 8.65 8.72 8.31 8.60
3253 NASDAQ NATR Thu, Jul 10, 2003 8.82 9.00 8.30 8.55
3252 NASDAQ NATR Wed, Jul 9, 2003 8.58 8.78 8.46 8.78
3251 NASDAQ NATR Tue, Jul 8, 2003 8.19 8.59 8.09 8.58
3250 NASDAQ NATR Mon, Jul 7, 2003 8.19 8.33 7.80 8.10
3249 NASDAQ NATR Thu, Jul 3, 2003 8.24 8.41 7.89 7.95
3248 NASDAQ NATR Wed, Jul 2, 2003 8.50 8.83 7.89 7.99
3247 NASDAQ NATR Tue, Jul 1, 2003 8.20 8.70 7.70 8.49
3246 NASDAQ NATR Mon, Jun 30, 2003 8.70 8.70 7.91 7.98
3245 NASDAQ NATR Fri, Jun 27, 2003 8.51 8.86 8.19 8.48
3244 NASDAQ NATR Thu, Jun 26, 2003 8.69 8.82 8.40 8.75
3243 NASDAQ NATR Wed, Jun 25, 2003 8.36 8.90 8.09 8.37
3242 NASDAQ NATR Tue, Jun 24, 2003 8.15 8.37 8.00 8.35
3241 NASDAQ NATR Mon, Jun 23, 2003 8.73 8.96 8.15 8.15
3240 NASDAQ NATR Fri, Jun 20, 2003 9.00 9.00 8.60 8.79
3239 NASDAQ NATR Thu, Jun 19, 2003 8.85 8.96 8.85 8.86
3238 NASDAQ NATR Wed, Jun 18, 2003 8.88 9.00 8.74 8.86
3237 NASDAQ NATR Tue, Jun 17, 2003 8.96 9.00 8.90 8.93
3236 NASDAQ NATR Mon, Jun 16, 2003 9.27 9.60 8.92 9.00
3235 NASDAQ NATR Fri, Jun 13, 2003 9.43 9.56 8.95 9.21
3234 NASDAQ NATR Thu, Jun 12, 2003 8.82 9.80 8.82 9.57
3233 NASDAQ NATR Wed, Jun 11, 2003 9.21 9.35 8.70 9.03
3232 NASDAQ NATR Tue, Jun 10, 2003 9.74 9.90 9.24 9.24
3231 NASDAQ NATR Mon, Jun 9, 2003 9.50 10.07 9.40 9.57
3230 NASDAQ NATR Fri, Jun 6, 2003 9.39 10.11 8.55 10.05
3229 NASDAQ NATR Thu, Jun 5, 2003 9.12 9.30 9.11 9.27
3228 NASDAQ NATR Wed, Jun 4, 2003 8.89 9.25 8.59 9.12
3227 NASDAQ NATR Tue, Jun 3, 2003 8.94 9.05 8.84 9.05
3226 NASDAQ NATR Mon, Jun 2, 2003 8.65 8.91 8.51 8.90
3225 NASDAQ NATR Fri, May 30, 2003 8.89 9.10 8.56 8.58
3224 NASDAQ NATR Thu, May 29, 2003 8.30 8.89 8.21 8.88
3223 NASDAQ NATR Wed, May 28, 2003 8.45 8.64 8.09 8.21
3222 NASDAQ NATR Tue, May 27, 2003 8.14 8.45 7.84 8.30
3221 NASDAQ NATR Fri, May 23, 2003 7.95 8.24 7.95 8.14
3220 NASDAQ NATR Thu, May 22, 2003 7.85 8.17 7.85 7.99
3219 NASDAQ NATR Wed, May 21, 2003 8.00 8.07 7.76 7.93
3218 NASDAQ NATR Tue, May 20, 2003 8.60 8.78 8.00 8.00
3217 NASDAQ NATR Mon, May 19, 2003 8.98 9.23 8.50 8.50
3216 NASDAQ NATR Fri, May 16, 2003 9.29 9.56 8.90 8.90
3215 NASDAQ NATR Thu, May 15, 2003 9.55 9.85 9.50 9.56
3214 NASDAQ NATR Wed, May 14, 2003 9.50 9.67 9.35 9.47
3213 NASDAQ NATR Tue, May 13, 2003 9.64 9.82 9.38 9.40
3212 NASDAQ NATR Mon, May 12, 2003 9.62 9.83 9.62 9.73
3211 NASDAQ NATR Fri, May 9, 2003 9.82 9.82 9.50 9.62
3210 NASDAQ NATR Thu, May 8, 2003 10.00 10.00 9.70 9.91
3209 NASDAQ NATR Wed, May 7, 2003 10.30 10.30 9.80 9.81
3208 NASDAQ NATR Tue, May 6, 2003 10.25 10.30 10.22 10.30
3207 NASDAQ NATR Mon, May 5, 2003 10.20 10.30 10.11 10.25
3206 NASDAQ NATR Fri, May 2, 2003 10.10 10.89 9.73 10.20
3205 NASDAQ NATR Thu, May 1, 2003 9.14 10.20 9.14 9.97
3204 NASDAQ NATR Wed, Apr 30, 2003 9.36 9.54 9.01 9.37
3203 NASDAQ NATR Tue, Apr 29, 2003 9.25 9.59 9.16 9.35
3202 NASDAQ NATR Mon, Apr 28, 2003 8.70 9.29 8.70 9.29
3201 NASDAQ NATR Fri, Apr 25, 2003 8.80 9.20 8.80 8.98
3200 NASDAQ NATR Thu, Apr 24, 2003 9.01 9.01 8.81 8.90
3199 NASDAQ NATR Wed, Apr 23, 2003 8.85 9.20 8.85 8.90
3198 NASDAQ NATR Tue, Apr 22, 2003 8.27 9.19 8.27 9.18
3197 NASDAQ NATR Mon, Apr 21, 2003 8.40 9.18 8.40 8.89
3196 NASDAQ NATR Thu, Apr 17, 2003 8.89 9.10 8.41 8.65
3195 NASDAQ NATR Wed, Apr 16, 2003 8.63 8.95 8.54 8.66
3194 NASDAQ NATR Tue, Apr 15, 2003 8.50 8.82 8.19 8.77
3193 NASDAQ NATR Mon, Apr 14, 2003 7.97 8.49 7.83 8.46
3192 NASDAQ NATR Fri, Apr 11, 2003 7.87 8.02 7.50 7.90
3191 NASDAQ NATR Thu, Apr 10, 2003 8.68 8.68 7.62 7.72
3190 NASDAQ NATR Wed, Apr 9, 2003 8.68 9.24 8.41 8.42
3189 NASDAQ NATR Tue, Apr 8, 2003 9.25 9.30 8.67 8.68
3188 NASDAQ NATR Mon, Apr 7, 2003 8.71 9.15 8.70 8.87
3187 NASDAQ NATR Fri, Apr 4, 2003 9.14 9.14 8.80 8.82
3186 NASDAQ NATR Thu, Apr 3, 2003 9.43 9.43 8.75 8.92
3185 NASDAQ NATR Wed, Apr 2, 2003 8.71 9.40 8.71 9.30
3184 NASDAQ NATR Tue, Apr 1, 2003 8.71 9.20 8.71 8.88
3183 NASDAQ NATR Mon, Mar 31, 2003 9.00 9.30 8.65 8.77
3182 NASDAQ NATR Fri, Mar 28, 2003 8.59 9.30 8.59 8.98
3181 NASDAQ NATR Thu, Mar 27, 2003 8.70 8.76 8.61 8.69
3180 NASDAQ NATR Wed, Mar 26, 2003 8.98 9.14 8.70 8.72
3179 NASDAQ NATR Tue, Mar 25, 2003 9.04 9.08 8.80 8.98
3178 NASDAQ NATR Mon, Mar 24, 2003 9.06 9.06 8.80 8.99
3177 NASDAQ NATR Fri, Mar 21, 2003 9.25 9.50 8.69 9.24
3176 NASDAQ NATR Thu, Mar 20, 2003 9.04 9.40 8.80 9.08
3175 NASDAQ NATR Wed, Mar 19, 2003 8.51 9.21 8.50 9.21
3174 NASDAQ NATR Tue, Mar 18, 2003 8.95 9.04 8.53 8.72
3173 NASDAQ NATR Mon, Mar 17, 2003 8.75 9.10 7.96 9.10
3172 NASDAQ NATR Fri, Mar 14, 2003 9.30 9.30 8.66 8.66
3171 NASDAQ NATR Thu, Mar 13, 2003 8.65 9.60 8.65 8.88
3170 NASDAQ NATR Wed, Mar 12, 2003 8.19 8.82 8.19 8.69
3169 NASDAQ NATR Tue, Mar 11, 2003 8.19 8.47 8.04 8.42
3168 NASDAQ NATR Mon, Mar 10, 2003 8.50 8.50 8.20 8.25
3167 NASDAQ NATR Fri, Mar 7, 2003 8.45 8.79 8.45 8.58
3166 NASDAQ NATR Thu, Mar 6, 2003 8.26 8.80 8.26 8.75
3165 NASDAQ NATR Wed, Mar 5, 2003 8.74 8.74 8.53 8.57
3164 NASDAQ NATR Tue, Mar 4, 2003 8.49 8.70 8.49 8.63
3163 NASDAQ NATR Mon, Mar 3, 2003 8.49 8.54 8.25 8.51
3162 NASDAQ NATR Fri, Feb 28, 2003 8.02 8.49 8.01 8.43
3161 NASDAQ NATR Thu, Feb 27, 2003 7.99 8.31 7.97 8.06
3160 NASDAQ NATR Wed, Feb 26, 2003 7.76 7.94 7.75 7.75
3159 NASDAQ NATR Tue, Feb 25, 2003 7.88 7.90 7.69 7.90
3158 NASDAQ NATR Mon, Feb 24, 2003 7.41 7.73 7.28 7.71
3157 NASDAQ NATR Fri, Feb 21, 2003 7.47 7.60 7.41 7.60
3156 NASDAQ NATR Thu, Feb 20, 2003 7.44 7.54 7.41 7.41
3155 NASDAQ NATR Wed, Feb 19, 2003 7.40 7.49 7.30 7.44
3154 NASDAQ NATR Tue, Feb 18, 2003 6.77 7.51 6.77 7.38
3153 NASDAQ NATR Fri, Feb 14, 2003 6.85 7.15 6.65 7.12
3152 NASDAQ NATR Thu, Feb 13, 2003 7.30 7.83 6.66 6.81
3151 NASDAQ NATR Wed, Feb 12, 2003 7.80 7.81 7.30 7.30
3150 NASDAQ NATR Tue, Feb 11, 2003 8.35 9.00 7.85 7.85
3149 NASDAQ NATR Mon, Feb 10, 2003 8.50 8.88 8.21 8.53
3148 NASDAQ NATR Fri, Feb 7, 2003 8.70 8.71 8.27 8.27
3147 NASDAQ NATR Thu, Feb 6, 2003 8.46 8.94 8.45 8.71
3146 NASDAQ NATR Wed, Feb 5, 2003 8.05 8.73 8.05 8.51
3145 NASDAQ NATR Tue, Feb 4, 2003 8.20 8.26 7.90 8.05
3144 NASDAQ NATR Mon, Feb 3, 2003 8.82 8.82 8.20 8.21
3143 NASDAQ NATR Fri, Jan 31, 2003 8.78 8.80 8.50 8.59
3142 NASDAQ NATR Thu, Jan 30, 2003 8.79 8.90 8.77 8.77
3141 NASDAQ NATR Wed, Jan 29, 2003 8.76 8.90 8.76 8.82
3140 NASDAQ NATR Tue, Jan 28, 2003 8.82 8.95 8.80 8.84
3139 NASDAQ NATR Mon, Jan 27, 2003 9.31 9.35 8.80 8.88
3138 NASDAQ NATR Fri, Jan 24, 2003 9.50 9.63 9.30 9.30
3137 NASDAQ NATR Thu, Jan 23, 2003 9.55 9.72 9.54 9.58
3136 NASDAQ NATR Wed, Jan 22, 2003 9.54 9.61 9.53 9.56
3135 NASDAQ NATR Tue, Jan 21, 2003 9.79 9.79 9.27 9.35
3134 NASDAQ NATR Fri, Jan 17, 2003 9.75 9.80 9.75 9.75
3133 NASDAQ NATR Thu, Jan 16, 2003 9.61 9.75 9.61 9.73
3132 NASDAQ NATR Wed, Jan 15, 2003 9.62 9.71 9.61 9.71
3131 NASDAQ NATR Tue, Jan 14, 2003 9.15 9.79 9.15 9.42
3130 NASDAQ NATR Mon, Jan 13, 2003 9.15 9.44 9.15 9.22
3129 NASDAQ NATR Fri, Jan 10, 2003 9.05 9.35 8.89 9.11
3128 NASDAQ NATR Thu, Jan 9, 2003 9.20 9.46 9.10 9.16
3127 NASDAQ NATR Wed, Jan 8, 2003 9.24 9.46 9.22 9.42
3126 NASDAQ NATR Tue, Jan 7, 2003 9.70 9.70 9.15 9.15
3125 NASDAQ NATR Mon, Jan 6, 2003 9.57 9.57 9.31 9.40
3124 NASDAQ NATR Fri, Jan 3, 2003 9.88 9.99 9.35 9.35
3123 NASDAQ NATR Thu, Jan 2, 2003 9.66 9.75 9.36 9.75
3122 NASDAQ NATR Tue, Dec 31, 2002 10.23 10.23 9.33 9.71
3121 NASDAQ NATR Mon, Dec 30, 2002 10.03 10.14 9.60 9.84
3120 NASDAQ NATR Fri, Dec 27, 2002 10.17 10.55 10.05 10.06
3119 NASDAQ NATR Thu, Dec 26, 2002 10.50 10.55 10.23 10.54
3118 NASDAQ NATR Tue, Dec 24, 2002 10.25 10.40 10.23 10.40
3117 NASDAQ NATR Mon, Dec 23, 2002 10.53 10.53 10.06 10.35
3116 NASDAQ NATR Fri, Dec 20, 2002 10.69 10.70 9.65 10.05
3115 NASDAQ NATR Thu, Dec 19, 2002 10.40 10.72 10.10 10.68
3114 NASDAQ NATR Wed, Dec 18, 2002 11.11 11.11 10.41 10.59
3113 NASDAQ NATR Tue, Dec 17, 2002 10.75 11.13 10.75 10.82
3112 NASDAQ NATR Mon, Dec 16, 2002 11.07 11.14 10.75 10.82
3111 NASDAQ NATR Fri, Dec 13, 2002 10.69 11.18 10.63 10.99
3110 NASDAQ NATR Thu, Dec 12, 2002 10.45 11.25 10.45 11.23
3109 NASDAQ NATR Wed, Dec 11, 2002 10.30 11.10 10.30 10.82
3108 NASDAQ NATR Tue, Dec 10, 2002 10.77 10.93 10.25 10.60
3107 NASDAQ NATR Mon, Dec 9, 2002 10.70 10.78 10.31 10.31
3106 NASDAQ NATR Fri, Dec 6, 2002 10.25 10.78 10.25 10.74
3105 NASDAQ NATR Thu, Dec 5, 2002 10.10 10.85 10.10 10.79
3104 NASDAQ NATR Wed, Dec 4, 2002 10.75 10.83 10.50 10.77
3103 NASDAQ NATR Tue, Dec 3, 2002 10.28 10.85 10.09 10.64
3102 NASDAQ NATR Mon, Dec 2, 2002 10.53 10.60 10.29 10.29
3101 NASDAQ NATR Fri, Nov 29, 2002 10.46 10.54 10.20 10.53
3100 NASDAQ NATR Wed, Nov 27, 2002 10.44 10.89 10.06 10.64
3099 NASDAQ NATR Tue, Nov 26, 2002 10.61 10.85 10.54 10.54
3098 NASDAQ NATR Mon, Nov 25, 2002 11.00 11.00 10.61 10.87
3097 NASDAQ NATR Fri, Nov 22, 2002 11.14 11.48 10.54 10.54
3096 NASDAQ NATR Thu, Nov 21, 2002 10.97 11.20 10.97 11.14
3095 NASDAQ NATR Wed, Nov 20, 2002 10.70 11.21 10.70 11.20
3094 NASDAQ NATR Tue, Nov 19, 2002 10.99 11.17 10.72 10.72
3093 NASDAQ NATR Mon, Nov 18, 2002 11.21 11.39 10.95 11.01
3092 NASDAQ NATR Fri, Nov 15, 2002 11.40 11.40 11.21 11.21
3091 NASDAQ NATR Thu, Nov 14, 2002 11.24 11.55 11.20 11.40
3090 NASDAQ NATR Wed, Nov 13, 2002 11.20 11.29 11.20 11.21
3089 NASDAQ NATR Tue, Nov 12, 2002 10.70 11.30 10.70 11.20
3088 NASDAQ NATR Mon, Nov 11, 2002 10.75 11.19 10.75 11.19
3087 NASDAQ NATR Fri, Nov 8, 2002 10.97 11.20 10.63 10.64
3086 NASDAQ NATR Thu, Nov 7, 2002 10.81 11.41 10.81 11.16
3085 NASDAQ NATR Wed, Nov 6, 2002 11.00 11.00 10.72 10.84
3084 NASDAQ NATR Tue, Nov 5, 2002 11.40 11.40 10.60 11.00
3083 NASDAQ NATR Mon, Nov 4, 2002 11.35 11.50 11.20 11.40
3082 NASDAQ NATR Fri, Nov 1, 2002 11.34 11.94 11.10 11.36
3081 NASDAQ NATR Thu, Oct 31, 2002 10.96 11.31 10.96 11.31
3080 NASDAQ NATR Wed, Oct 30, 2002 10.65 11.00 10.65 10.93
3079 NASDAQ NATR Tue, Oct 29, 2002 10.45 10.75 10.45 10.75
3078 NASDAQ NATR Mon, Oct 28, 2002 10.86 10.99 10.45 10.46
3077 NASDAQ NATR Fri, Oct 25, 2002 10.42 10.83 10.30 10.83
3076 NASDAQ NATR Thu, Oct 24, 2002 10.32 10.60 10.25 10.54
3075 NASDAQ NATR Wed, Oct 23, 2002 9.28 10.43 9.27 10.43
3074 NASDAQ NATR Tue, Oct 22, 2002 10.67 10.75 8.78 9.55
3073 NASDAQ NATR Mon, Oct 21, 2002 10.47 10.88 10.47 10.88
3072 NASDAQ NATR Fri, Oct 18, 2002 10.47 10.90 10.47 10.90
3071 NASDAQ NATR Thu, Oct 17, 2002 10.17 10.80 10.00 10.75
3070 NASDAQ NATR Wed, Oct 16, 2002 10.60 10.60 9.88 10.09
3069 NASDAQ NATR Tue, Oct 15, 2002 11.35 11.35 10.60 10.80
3068 NASDAQ NATR Mon, Oct 14, 2002 10.90 10.98 10.80 10.80
3067 NASDAQ NATR Fri, Oct 11, 2002 11.05 11.30 10.70 10.79
3066 NASDAQ NATR Thu, Oct 10, 2002 11.10 11.90 10.89 11.05
3065 NASDAQ NATR Wed, Oct 9, 2002 11.43 11.50 11.22 11.41
3064 NASDAQ NATR Tue, Oct 8, 2002 11.38 11.75 11.20 11.74
3063 NASDAQ NATR Mon, Oct 7, 2002 11.67 11.67 11.38 11.39
3062 NASDAQ NATR Fri, Oct 4, 2002 12.10 12.27 11.68 11.92
3061 NASDAQ NATR Thu, Oct 3, 2002 11.80 12.14 11.80 12.10
3060 NASDAQ NATR Wed, Oct 2, 2002 11.31 12.09 11.31 11.80
3059 NASDAQ NATR Tue, Oct 1, 2002 10.70 11.68 10.62 11.68
3058 NASDAQ NATR Mon, Sep 30, 2002 10.85 11.05 10.60 10.82
3057 NASDAQ NATR Fri, Sep 27, 2002 11.05 11.45 10.85 10.87
3056 NASDAQ NATR Thu, Sep 26, 2002 10.69 10.95 10.69 10.94
3055 NASDAQ NATR Wed, Sep 25, 2002 10.73 11.00 10.58 10.70
3054 NASDAQ NATR Tue, Sep 24, 2002 10.73 10.95 10.69 10.73
3053 NASDAQ NATR Mon, Sep 23, 2002 11.05 11.05 10.65 10.66
3052 NASDAQ NATR Fri, Sep 20, 2002 11.25 11.30 10.68 10.97
3051 NASDAQ NATR Thu, Sep 19, 2002 10.68 11.24 10.68 11.03
3050 NASDAQ NATR Wed, Sep 18, 2002 10.66 11.20 10.66 10.95
3049 NASDAQ NATR Tue, Sep 17, 2002 10.96 11.20 10.71 10.77
3048 NASDAQ NATR Mon, Sep 16, 2002 10.95 11.16 10.95 11.00
3047 NASDAQ NATR Fri, Sep 13, 2002 10.70 11.17 10.68 10.96
3046 NASDAQ NATR Thu, Sep 12, 2002 10.48 10.85 10.48 10.70
3045 NASDAQ NATR Wed, Sep 11, 2002 10.82 10.84 10.42 10.63
3044 NASDAQ NATR Tue, Sep 10, 2002 10.96 11.14 10.30 10.47
3043 NASDAQ NATR Mon, Sep 9, 2002 11.20 11.20 10.63 10.95
3042 NASDAQ NATR Fri, Sep 6, 2002 10.94 11.19 10.60 11.14
3041 NASDAQ NATR Thu, Sep 5, 2002 11.18 11.18 10.66 10.90
3040 NASDAQ NATR Wed, Sep 4, 2002 10.40 11.17 10.40 11.15
3039 NASDAQ NATR Tue, Sep 3, 2002 10.60 11.10 10.41 10.41
3038 NASDAQ NATR Fri, Aug 30, 2002 11.20 11.25 10.70 10.70
3037 NASDAQ NATR Thu, Aug 29, 2002 11.00 11.25 11.00 11.25
3036 NASDAQ NATR Wed, Aug 28, 2002 10.84 11.45 10.84 11.05
3035 NASDAQ NATR Tue, Aug 27, 2002 10.97 11.35 10.84 10.84
3034 NASDAQ NATR Mon, Aug 26, 2002 10.75 11.43 10.75 11.16
3033 NASDAQ NATR Fri, Aug 23, 2002 10.74 10.90 10.60 10.75
3032 NASDAQ NATR Thu, Aug 22, 2002 10.75 10.95 10.50 10.91
3031 NASDAQ NATR Wed, Aug 21, 2002 10.62 11.00 10.62 11.00
3030 NASDAQ NATR Tue, Aug 20, 2002 10.17 11.05 10.17 10.65
3029 NASDAQ NATR Mon, Aug 19, 2002 10.13 11.08 10.00 10.45
3028 NASDAQ NATR Fri, Aug 16, 2002 10.85 11.10 10.71 10.81
3027 NASDAQ NATR Thu, Aug 15, 2002 10.70 11.00 10.70 10.76
3026 NASDAQ NATR Wed, Aug 14, 2002 10.07 11.09 10.07 11.00
3025 NASDAQ NATR Tue, Aug 13, 2002 10.60 11.00 10.37 10.37
3024 NASDAQ NATR Mon, Aug 12, 2002 10.41 11.00 10.21 11.00
3023 NASDAQ NATR Fri, Aug 9, 2002 10.70 10.70 9.90 10.51
3022 NASDAQ NATR Thu, Aug 8, 2002 11.00 11.00 10.50 10.74
3021 NASDAQ NATR Wed, Aug 7, 2002 10.94 11.00 10.58 11.00
3020 NASDAQ NATR Tue, Aug 6, 2002 10.99 10.99 10.60 10.95
3019 NASDAQ NATR Mon, Aug 5, 2002 10.11 10.94 10.11 10.56
3018 NASDAQ NATR Fri, Aug 2, 2002 10.16 11.00 9.36 10.71
3017 NASDAQ NATR Thu, Aug 1, 2002 10.37 11.07 10.16 11.00
3016 NASDAQ NATR Wed, Jul 31, 2002 10.76 11.00 10.46 10.46
3015 NASDAQ NATR Tue, Jul 30, 2002 10.81 11.00 10.68 10.97
3014 NASDAQ NATR Mon, Jul 29, 2002 10.49 11.09 10.49 11.07
3013 NASDAQ NATR Fri, Jul 26, 2002 10.14 10.55 10.14 10.50
3012 NASDAQ NATR Thu, Jul 25, 2002 10.00 10.35 10.00 10.25
3011 NASDAQ NATR Wed, Jul 24, 2002 10.89 11.00 9.84 9.84
3010 NASDAQ NATR Tue, Jul 23, 2002 10.65 11.19 10.19 10.89
3009 NASDAQ NATR Mon, Jul 22, 2002 11.10 11.30 10.59 11.00
3008 NASDAQ NATR Fri, Jul 19, 2002 11.52 11.64 11.11 11.11
3007 NASDAQ NATR Thu, Jul 18, 2002 11.20 11.79 11.20 11.41
3006 NASDAQ NATR Wed, Jul 17, 2002 11.50 11.50 11.20 11.30
3005 NASDAQ NATR Tue, Jul 16, 2002 11.19 11.48 11.19 11.20
3004 NASDAQ NATR Mon, Jul 15, 2002 11.62 11.62 11.19 11.20
3003 NASDAQ NATR Fri, Jul 12, 2002 11.40 12.03 11.40 11.63
3002 NASDAQ NATR Thu, Jul 11, 2002 11.50 11.79 11.40 11.40
3001 NASDAQ NATR Wed, Jul 10, 2002 11.60 11.91 11.60 11.75
3000 NASDAQ NATR Tue, Jul 9, 2002 11.55 11.79 11.45 11.70
2999 NASDAQ NATR Mon, Jul 8, 2002 11.46 11.80 11.30 11.50
2998 NASDAQ NATR Fri, Jul 5, 2002 11.46 11.80 11.46 11.80
2997 NASDAQ NATR Wed, Jul 3, 2002 11.40 11.63 11.40 11.49
2996 NASDAQ NATR Tue, Jul 2, 2002 11.10 11.62 11.10 11.58
2995 NASDAQ NATR Mon, Jul 1, 2002 12.30 12.30 11.00 11.14
2994 NASDAQ NATR Fri, Jun 28, 2002 12.23 12.53 11.31 11.31
2993 NASDAQ NATR Thu, Jun 27, 2002 11.99 13.00 11.47 12.06
2992 NASDAQ NATR Wed, Jun 26, 2002 13.05 13.51 11.97 12.47
2991 NASDAQ NATR Tue, Jun 25, 2002 11.90 13.60 11.58 13.25
2990 NASDAQ NATR Mon, Jun 24, 2002 13.95 14.66 12.28 13.05
2989 NASDAQ NATR Fri, Jun 21, 2002 10.35 16.13 10.25 15.17
2988 NASDAQ NATR Thu, Jun 20, 2002 9.56 11.30 9.53 11.20
2987 NASDAQ NATR Wed, Jun 19, 2002 9.95 10.69 9.55 9.83
2986 NASDAQ NATR Tue, Jun 18, 2002 10.05 10.68 9.98 10.68
2985 NASDAQ NATR Mon, Jun 17, 2002 10.15 10.62 10.05 10.45
2984 NASDAQ NATR Fri, Jun 14, 2002 10.65 10.70 10.15 10.15
2983 NASDAQ NATR Thu, Jun 13, 2002 10.70 11.43 10.70 10.71
2982 NASDAQ NATR Wed, Jun 12, 2002 10.50 11.33 10.50 10.71
2981 NASDAQ NATR Tue, Jun 11, 2002 10.15 10.79 10.08 10.35
2980 NASDAQ NATR Mon, Jun 10, 2002 11.29 11.40 10.15 10.15
2979 NASDAQ NATR Fri, Jun 7, 2002 10.80 11.26 10.80 11.20
2978 NASDAQ NATR Thu, Jun 6, 2002 10.95 10.95 10.80 10.80
2977 NASDAQ NATR Wed, Jun 5, 2002 10.79 10.91 10.40 10.85
2976 NASDAQ NATR Tue, Jun 4, 2002 10.21 10.97 10.21 10.90
2975 NASDAQ NATR Mon, Jun 3, 2002 10.95 10.95 10.21 10.21
2974 NASDAQ NATR Fri, May 31, 2002 11.29 11.40 11.00 11.01
2973 NASDAQ NATR Thu, May 30, 2002 11.32 11.33 11.00 11.30
2972 NASDAQ NATR Wed, May 29, 2002 10.95 11.37 10.65 11.24
2971 NASDAQ NATR Tue, May 28, 2002 11.27 11.37 10.84 11.37
2970 NASDAQ NATR Fri, May 24, 2002 11.14 11.40 11.12 11.14
2969 NASDAQ NATR Thu, May 23, 2002 11.22 11.30 11.08 11.30
2968 NASDAQ NATR Wed, May 22, 2002 11.16 11.23 11.16 11.21
2967 NASDAQ NATR Tue, May 21, 2002 11.00 11.39 10.96 11.16
2966 NASDAQ NATR Mon, May 20, 2002 11.10 11.37 10.98 11.01
2965 NASDAQ NATR Fri, May 17, 2002 11.10 11.31 11.04 11.30
2964 NASDAQ NATR Thu, May 16, 2002 11.26 11.38 11.10 11.10
2963 NASDAQ NATR Wed, May 15, 2002 11.32 11.48 11.24 11.24
2962 NASDAQ NATR Tue, May 14, 2002 10.94 11.47 10.81 11.47
2961 NASDAQ NATR Mon, May 13, 2002 10.95 11.10 10.91 11.10
2960 NASDAQ NATR Fri, May 10, 2002 11.22 11.29 10.82 10.83
2959 NASDAQ NATR Thu, May 9, 2002 11.06 11.29 10.84 10.84
2958 NASDAQ NATR Wed, May 8, 2002 11.06 11.17 11.00 11.14
2957 NASDAQ NATR Tue, May 7, 2002 11.30 11.32 10.87 11.06
2956 NASDAQ NATR Mon, May 6, 2002 11.27 11.37 11.27 11.30
2955 NASDAQ NATR Fri, May 3, 2002 11.25 11.51 11.25 11.40
2954 NASDAQ NATR Thu, May 2, 2002 10.95 11.45 10.70 11.30
2953 NASDAQ NATR Wed, May 1, 2002 10.92 11.02 10.77 10.90
2952 NASDAQ NATR Tue, Apr 30, 2002 10.95 11.02 10.80 10.90
2951 NASDAQ NATR Mon, Apr 29, 2002 10.08 10.96 10.08 10.96
2950 NASDAQ NATR Fri, Apr 26, 2002 10.25 10.85 10.08 10.08
2949 NASDAQ NATR Thu, Apr 25, 2002 9.98 10.26 9.98 10.26
2948 NASDAQ NATR Wed, Apr 24, 2002 9.73 10.13 9.73 10.00
2947 NASDAQ NATR Tue, Apr 23, 2002 9.97 10.00 9.70 10.00
2946 NASDAQ NATR Mon, Apr 22, 2002 10.00 10.10 9.90 9.94
2945 NASDAQ NATR Fri, Apr 19, 2002 10.20 10.27 9.65 9.95
2944 NASDAQ NATR Thu, Apr 18, 2002 10.43 10.49 10.20 10.29
2943 NASDAQ NATR Wed, Apr 17, 2002 10.93 10.93 10.50 10.50
2942 NASDAQ NATR Tue, Apr 16, 2002 10.46 10.93 10.27 10.92
2941 NASDAQ NATR Mon, Apr 15, 2002 10.35 10.65 10.24 10.50
2940 NASDAQ NATR Fri, Apr 12, 2002 10.10 10.35 10.02 10.35
2939 NASDAQ NATR Thu, Apr 11, 2002 10.15 10.78 10.00 10.00
2938 NASDAQ NATR Wed, Apr 10, 2002 10.15 10.59 10.15 10.22
2937 NASDAQ NATR Tue, Apr 9, 2002 10.53 10.66 10.17 10.18
2936 NASDAQ NATR Mon, Apr 8, 2002 10.00 10.58 9.88 10.46
2935 NASDAQ NATR Fri, Apr 5, 2002 10.50 10.80 10.00 10.27
2934 NASDAQ NATR Thu, Apr 4, 2002 10.65 10.93 10.65 10.91
2933 NASDAQ NATR Wed, Apr 3, 2002 10.88 10.88 10.60 10.70
2932 NASDAQ NATR Tue, Apr 2, 2002 10.60 10.75 10.60 10.75
2931 NASDAQ NATR Mon, Apr 1, 2002 11.38 11.38 10.55 10.70
2930 NASDAQ NATR Thu, Mar 28, 2002 11.52 11.78 10.87 11.21
2929 NASDAQ NATR Wed, Mar 27, 2002 11.79 12.05 11.56 11.56
2928 NASDAQ NATR Tue, Mar 26, 2002 11.76 12.00 11.76 12.00
2927 NASDAQ NATR Mon, Mar 25, 2002 11.93 11.95 11.79 11.80
2926 NASDAQ NATR Fri, Mar 22, 2002 12.37 12.55 11.86 11.93
2925 NASDAQ NATR Thu, Mar 21, 2002 12.22 12.50 12.22 12.50
2924 NASDAQ NATR Wed, Mar 20, 2002 12.24 12.40 12.22 12.23
2923 NASDAQ NATR Tue, Mar 19, 2002 12.28 12.38 12.20 12.29
2922 NASDAQ NATR Mon, Mar 18, 2002 12.44 12.50 12.26 12.40
2921 NASDAQ NATR Fri, Mar 15, 2002 12.27 12.34 12.27 12.28
2920 NASDAQ NATR Thu, Mar 14, 2002 12.47 12.80 12.47 12.67
2919 NASDAQ NATR Wed, Mar 13, 2002 12.47 12.75 12.47 12.60
2918 NASDAQ NATR Tue, Mar 12, 2002 12.75 12.75 12.52 12.75
2917 NASDAQ NATR Mon, Mar 11, 2002 13.05 13.05 12.35 12.69
2916 NASDAQ NATR Fri, Mar 8, 2002 13.25 13.49 13.00 13.05
2915 NASDAQ NATR Thu, Mar 7, 2002 13.05 13.50 13.05 13.50
2914 NASDAQ NATR Wed, Mar 6, 2002 12.87 13.50 12.87 13.50
2913 NASDAQ NATR Tue, Mar 5, 2002 13.12 13.50 13.12 13.50
2912 NASDAQ NATR Mon, Mar 4, 2002 12.75 13.50 12.75 13.39
2911 NASDAQ NATR Fri, Mar 1, 2002 12.50 12.75 12.50 12.75
2910 NASDAQ NATR Thu, Feb 28, 2002 12.76 12.92 12.59 12.65
2909 NASDAQ NATR Wed, Feb 27, 2002 12.70 12.75 12.65 12.70
2908 NASDAQ NATR Tue, Feb 26, 2002 12.52 12.66 12.52 12.65
2907 NASDAQ NATR Mon, Feb 25, 2002 12.45 12.69 12.31 12.56
2906 NASDAQ NATR Fri, Feb 22, 2002 12.45 12.69 12.45 12.65
2905 NASDAQ NATR Thu, Feb 21, 2002 12.50 12.70 12.50 12.55
2904 NASDAQ NATR Wed, Feb 20, 2002 12.35 12.78 12.20 12.69
2903 NASDAQ NATR Tue, Feb 19, 2002 12.57 12.75 12.40 12.74
2902 NASDAQ NATR Fri, Feb 15, 2002 12.64 12.75 12.37 12.72
2901 NASDAQ NATR Thu, Feb 14, 2002 12.60 12.70 12.50 12.65
2900 NASDAQ NATR Wed, Feb 13, 2002 12.50 12.70 12.29 12.70
2899 NASDAQ NATR Tue, Feb 12, 2002 12.40 12.80 12.18 12.62
2898 NASDAQ NATR Mon, Feb 11, 2002 12.85 12.95 12.70 12.75
2897 NASDAQ NATR Fri, Feb 8, 2002 13.32 13.34 12.73 13.00
2896 NASDAQ NATR Thu, Feb 7, 2002 12.62 13.34 12.44 13.32
2895 NASDAQ NATR Wed, Feb 6, 2002 13.01 13.24 13.01 13.12
2894 NASDAQ NATR Tue, Feb 5, 2002 13.15 13.19 12.95 13.12
2893 NASDAQ NATR Mon, Feb 4, 2002 13.20 13.20 13.00 13.15
2892 NASDAQ NATR Fri, Feb 1, 2002 13.07 13.26 13.00 13.10
2891 NASDAQ NATR Thu, Jan 31, 2002 13.10 13.25 12.79 13.15
2890 NASDAQ NATR Wed, Jan 30, 2002 12.90 13.25 12.81 13.25
2889 NASDAQ NATR Tue, Jan 29, 2002 12.30 13.05 12.30 12.99
2888 NASDAQ NATR Mon, Jan 28, 2002 12.10 13.25 12.09 13.25
2887 NASDAQ NATR Fri, Jan 25, 2002 12.19 12.40 12.19 12.34
2886 NASDAQ NATR Thu, Jan 24, 2002 12.32 12.40 12.20 12.36
2885 NASDAQ NATR Wed, Jan 23, 2002 12.25 12.44 12.13 12.25
2884 NASDAQ NATR Tue, Jan 22, 2002 12.21 12.45 12.21 12.31
2883 NASDAQ NATR Fri, Jan 18, 2002 12.30 12.54 12.30 12.45
2882 NASDAQ NATR Thu, Jan 17, 2002 12.17 12.51 12.17 12.51
2881 NASDAQ NATR Wed, Jan 16, 2002 11.90 12.30 11.90 12.30
2880 NASDAQ NATR Tue, Jan 15, 2002 11.81 12.11 11.81 12.11
2879 NASDAQ NATR Mon, Jan 14, 2002 12.01 12.15 11.55 11.98
2878 NASDAQ NATR Fri, Jan 11, 2002 11.94 12.10 11.93 12.01
2877 NASDAQ NATR Thu, Jan 10, 2002 11.55 11.94 11.55 11.94
2876 NASDAQ NATR Wed, Jan 9, 2002 12.15 12.15 11.57 11.60
2875 NASDAQ NATR Tue, Jan 8, 2002 11.90 12.15 11.49 12.05
2874 NASDAQ NATR Mon, Jan 7, 2002 12.08 12.25 11.91 12.05
2873 NASDAQ NATR Fri, Jan 4, 2002 12.10 12.15 11.46 12.09
2872 NASDAQ NATR Thu, Jan 3, 2002 11.56 12.00 11.01 12.00
2871 NASDAQ NATR Wed, Jan 2, 2002 11.70 11.77 11.50 11.75
2870 NASDAQ NATR Mon, Dec 31, 2001 12.00 12.23 11.74 11.74
2869 NASDAQ NATR Fri, Dec 28, 2001 11.53 12.38 11.26 12.38
2868 NASDAQ NATR Thu, Dec 27, 2001 11.09 11.53 11.00 11.53
2867 NASDAQ NATR Wed, Dec 26, 2001 11.62 12.00 11.01 11.42
2866 NASDAQ NATR Mon, Dec 24, 2001 10.50 11.70 9.10 11.55
2865 NASDAQ NATR Fri, Dec 21, 2001 12.74 12.74 7.43 8.00
2864 NASDAQ NATR Thu, Dec 20, 2001 12.47 12.72 12.00 12.25
2863 NASDAQ NATR Wed, Dec 19, 2001 12.39 13.14 12.35 12.52
2862 NASDAQ NATR Tue, Dec 18, 2001 12.66 12.71 12.30 12.71
2861 NASDAQ NATR Mon, Dec 17, 2001 12.40 12.75 12.01 12.75
2860 NASDAQ NATR Fri, Dec 14, 2001 12.13 13.07 11.95 12.40
2859 NASDAQ NATR Thu, Dec 13, 2001 11.67 12.45 11.34 12.16
2858 NASDAQ NATR Wed, Dec 12, 2001 12.00 12.12 11.82 11.84
2857 NASDAQ NATR Tue, Dec 11, 2001 13.23 13.23 12.02 12.04
2856 NASDAQ NATR Mon, Dec 10, 2001 13.00 13.47 12.62 12.62
2855 NASDAQ NATR Fri, Dec 7, 2001 13.61 13.81 12.95 13.01
2854 NASDAQ NATR Thu, Dec 6, 2001 13.69 14.00 13.25 13.61
2853 NASDAQ NATR Wed, Dec 5, 2001 13.80 14.05 13.61 13.91
2852 NASDAQ NATR Tue, Dec 4, 2001 13.75 13.89 13.50 13.89
2851 NASDAQ NATR Mon, Dec 3, 2001 14.00 14.05 13.77 13.81
2850 NASDAQ NATR Fri, Nov 30, 2001 14.00 14.15 13.95 13.95
2849 NASDAQ NATR Thu, Nov 29, 2001 14.15 14.27 14.06 14.14
2848 NASDAQ NATR Wed, Nov 28, 2001 14.10 14.38 13.95 14.05
2847 NASDAQ NATR Tue, Nov 27, 2001 14.56 14.60 13.88 14.25
2846 NASDAQ NATR Mon, Nov 26, 2001 14.20 14.75 14.20 14.70
2845 NASDAQ NATR Fri, Nov 23, 2001 14.01 14.50 13.90 14.25
2844 NASDAQ NATR Wed, Nov 21, 2001 13.93 14.22 13.93 14.19
2843 NASDAQ NATR Tue, Nov 20, 2001 13.25 14.13 13.25 14.13
2842 NASDAQ NATR Mon, Nov 19, 2001 12.65 13.75 12.65 13.75
2841 NASDAQ NATR Fri, Nov 16, 2001 12.95 12.95 12.40 12.85
2840 NASDAQ NATR Thu, Nov 15, 2001 12.70 12.95 12.70 12.94
2839 NASDAQ NATR Wed, Nov 14, 2001 12.55 12.95 12.55 12.95
2838 NASDAQ NATR Tue, Nov 13, 2001 12.50 12.90 12.50 12.71
2837 NASDAQ NATR Mon, Nov 12, 2001 11.89 12.80 11.89 12.70
2836 NASDAQ NATR Fri, Nov 9, 2001 11.60 11.99 11.60 11.99
2835 NASDAQ NATR Thu, Nov 8, 2001 11.62 11.90 11.62 11.69
2834 NASDAQ NATR Wed, Nov 7, 2001 11.51 11.82 11.51 11.71
2833 NASDAQ NATR Tue, Nov 6, 2001 11.46 11.58 11.45 11.58
2832 NASDAQ NATR Mon, Nov 5, 2001 11.36 11.81 11.29 11.50
2831 NASDAQ NATR Fri, Nov 2, 2001 11.50 11.63 11.31 11.36
2830 NASDAQ NATR Thu, Nov 1, 2001 10.73 11.70 10.73 11.51
2829 NASDAQ NATR Wed, Oct 31, 2001 10.60 11.55 10.60 11.55
2828 NASDAQ NATR Tue, Oct 30, 2001 10.66 10.95 10.51 10.74
2827 NASDAQ NATR Mon, Oct 29, 2001 11.40 11.40 10.70 10.81
2826 NASDAQ NATR Fri, Oct 26, 2001 11.11 11.47 11.11 11.43
2825 NASDAQ NATR Thu, Oct 25, 2001 11.10 11.45 11.00 11.31
2824 NASDAQ NATR Wed, Oct 24, 2001 11.26 11.48 11.20 11.33
2823 NASDAQ NATR Tue, Oct 23, 2001 11.45 11.50 11.26 11.26
2822 NASDAQ NATR Mon, Oct 22, 2001 10.28 11.67 10.04 11.30
2821 NASDAQ NATR Fri, Oct 19, 2001 10.92 10.92 10.00 10.28
2820 NASDAQ NATR Thu, Oct 18, 2001 11.55 11.55 10.53 10.71
2819 NASDAQ NATR Wed, Oct 17, 2001 11.60 11.87 11.45 11.45
2818 NASDAQ NATR Tue, Oct 16, 2001 11.20 11.95 11.20 11.90
2817 NASDAQ NATR Mon, Oct 15, 2001 11.50 11.65 11.10 11.65
2816 NASDAQ NATR Fri, Oct 12, 2001 11.03 11.53 11.03 11.53
2815 NASDAQ NATR Thu, Oct 11, 2001 10.55 11.50 10.55 11.50
2814 NASDAQ NATR Wed, Oct 10, 2001 10.63 10.91 10.22 10.75
2813 NASDAQ NATR Tue, Oct 9, 2001 10.90 11.56 10.30 10.79
2812 NASDAQ NATR Mon, Oct 8, 2001 11.40 11.49 10.90 11.38
2811 NASDAQ NATR Fri, Oct 5, 2001 11.23 11.48 11.20 11.42
2810 NASDAQ NATR Thu, Oct 4, 2001 11.41 11.65 11.22 11.22
2809 NASDAQ NATR Wed, Oct 3, 2001 11.50 11.62 11.25 11.46
2808 NASDAQ NATR Tue, Oct 2, 2001 11.50 11.50 11.20 11.44
2807 NASDAQ NATR Mon, Oct 1, 2001 11.45 11.62 10.61 11.34
2806 NASDAQ NATR Fri, Sep 28, 2001 9.75 11.50 9.75 11.45
2805 NASDAQ NATR Thu, Sep 27, 2001 9.72 10.44 9.72 10.35
2804 NASDAQ NATR Wed, Sep 26, 2001 10.40 11.70 9.70 10.00
2803 NASDAQ NATR Tue, Sep 25, 2001 9.88 11.70 9.76 10.05
2802 NASDAQ NATR Mon, Sep 24, 2001 8.95 11.00 8.75 10.45
2801 NASDAQ NATR Fri, Sep 21, 2001 9.55 10.00 8.93 9.24
2800 NASDAQ NATR Thu, Sep 20, 2001 10.19 10.19 9.50 9.50
2799 NASDAQ NATR Wed, Sep 19, 2001 11.41 11.41 8.15 10.37
2798 NASDAQ NATR Tue, Sep 18, 2001 11.32 11.50 11.00 11.49
2797 NASDAQ NATR Mon, Sep 17, 2001 11.40 12.00 10.80 11.65
2796 NASDAQ NATR Mon, Sep 10, 2001 13.20 13.20 12.27 12.58
2795 NASDAQ NATR Fri, Sep 7, 2001 13.90 13.90 13.18 13.27
2794 NASDAQ NATR Thu, Sep 6, 2001 13.70 14.25 13.70 13.90
2793 NASDAQ NATR Wed, Sep 5, 2001 13.66 14.08 13.66 14.06
2792 NASDAQ NATR Tue, Sep 4, 2001 13.80 13.90 13.55 13.81
2791 NASDAQ NATR Fri, Aug 31, 2001 13.98 14.05 13.78 13.85
2790 NASDAQ NATR Thu, Aug 30, 2001 13.40 14.00 13.40 13.85
2789 NASDAQ NATR Wed, Aug 29, 2001 13.30 13.74 13.15 13.74
2788 NASDAQ NATR Tue, Aug 28, 2001 13.20 13.29 13.12 13.23
2787 NASDAQ NATR Mon, Aug 27, 2001 13.28 13.36 13.20 13.20
2786 NASDAQ NATR Fri, Aug 24, 2001 13.09 13.28 12.84 13.28
2785 NASDAQ NATR Thu, Aug 23, 2001 12.80 13.33 12.80 13.19
2784 NASDAQ NATR Wed, Aug 22, 2001 12.75 13.09 12.56 13.05
2783 NASDAQ NATR Tue, Aug 21, 2001 12.86 13.15 12.86 13.10
2782 NASDAQ NATR Mon, Aug 20, 2001 12.74 12.99 12.60 12.98
2781 NASDAQ NATR Fri, Aug 17, 2001 13.00 13.13 12.93 13.01
2780 NASDAQ NATR Thu, Aug 16, 2001 12.12 13.00 12.12 13.00
2779 NASDAQ NATR Wed, Aug 15, 2001 12.58 12.70 12.21 12.55
2778 NASDAQ NATR Tue, Aug 14, 2001 12.06 12.91 12.06 12.52
2777 NASDAQ NATR Mon, Aug 13, 2001 12.10 12.50 12.10 12.45
2776 NASDAQ NATR Fri, Aug 10, 2001 12.00 12.50 12.00 12.49
2775 NASDAQ NATR Thu, Aug 9, 2001 12.21 12.50 12.00 12.49
2774 NASDAQ NATR Wed, Aug 8, 2001 11.70 12.49 11.70 12.49
2773 NASDAQ NATR Tue, Aug 7, 2001 11.57 11.90 11.57 11.85
2772 NASDAQ NATR Mon, Aug 6, 2001 12.02 12.05 11.57 11.57
2771 NASDAQ NATR Fri, Aug 3, 2001 12.30 12.30 11.96 12.10
2770 NASDAQ NATR Thu, Aug 2, 2001 12.00 12.40 11.97 12.26
2769 NASDAQ NATR Wed, Aug 1, 2001 12.17 12.59 12.01 12.55
2768 NASDAQ NATR Tue, Jul 31, 2001 11.96 12.66 11.96 12.16
2767 NASDAQ NATR Mon, Jul 30, 2001 12.19 12.30 11.70 12.00
2766 NASDAQ NATR Fri, Jul 27, 2001 12.68 12.96 12.28 12.38
2765 NASDAQ NATR Thu, Jul 26, 2001 12.10 13.25 12.10 12.66
2764 NASDAQ NATR Wed, Jul 25, 2001 11.68 13.31 11.68 12.50
2763 NASDAQ NATR Tue, Jul 24, 2001 11.83 12.19 10.25 12.19
2762 NASDAQ NATR Mon, Jul 23, 2001 12.35 12.90 11.53 11.90
2761 NASDAQ NATR Fri, Jul 20, 2001 12.30 12.85 12.30 12.84
2760 NASDAQ NATR Thu, Jul 19, 2001 12.59 12.69 11.71 12.50
2759 NASDAQ NATR Wed, Jul 18, 2001 12.58 12.78 12.54 12.77
2758 NASDAQ NATR Tue, Jul 17, 2001 12.45 12.79 12.37 12.65
2757 NASDAQ NATR Mon, Jul 16, 2001 12.37 12.90 12.37 12.65
2756 NASDAQ NATR Fri, Jul 13, 2001 12.36 12.99 12.36 12.80
2755 NASDAQ NATR Thu, Jul 12, 2001 12.00 12.79 11.71 12.75
2754 NASDAQ NATR Wed, Jul 11, 2001 11.40 12.00 11.24 11.99
2753 NASDAQ NATR Tue, Jul 10, 2001 10.86 11.43 10.85 11.43
2752 NASDAQ NATR Mon, Jul 9, 2001 10.96 11.05 10.85 11.00
2751 NASDAQ NATR Fri, Jul 6, 2001 10.80 10.98 10.80 10.97
2750 NASDAQ NATR Thu, Jul 5, 2001 11.70 11.70 10.80 10.89
2749 NASDAQ NATR Tue, Jul 3, 2001 11.42 11.70 11.25 11.29
2748 NASDAQ NATR Mon, Jul 2, 2001 11.90 11.95 11.45 11.50
2747 NASDAQ NATR Fri, Jun 29, 2001 11.81 12.44 11.78 11.83
2746 NASDAQ NATR Thu, Jun 28, 2001 12.41 13.00 11.79 11.97
2745 NASDAQ NATR Wed, Jun 27, 2001 12.04 12.50 11.63 12.30
2744 NASDAQ NATR Tue, Jun 26, 2001 11.42 12.36 11.30 12.14
2743 NASDAQ NATR Mon, Jun 25, 2001 11.50 11.63 11.30 11.42
2742 NASDAQ NATR Fri, Jun 22, 2001 11.60 11.67 11.50 11.54
2741 NASDAQ NATR Thu, Jun 21, 2001 11.65 11.98 11.65 11.90
2740 NASDAQ NATR Wed, Jun 20, 2001 11.60 11.91 11.50 11.78
2739 NASDAQ NATR Tue, Jun 19, 2001 11.43 11.68 11.35 11.60
2738 NASDAQ NATR Mon, Jun 18, 2001 11.44 11.60 11.33 11.55
2737 NASDAQ NATR Fri, Jun 15, 2001 11.50 11.70 11.20 11.40
2736 NASDAQ NATR Thu, Jun 14, 2001 11.54 11.95 11.50 11.68
2735 NASDAQ NATR Wed, Jun 13, 2001 11.11 11.36 11.11 11.36
2734 NASDAQ NATR Tue, Jun 12, 2001 11.00 11.36 11.00 11.20
2733 NASDAQ NATR Mon, Jun 11, 2001 10.98 11.10 10.72 11.10
2732 NASDAQ NATR Fri, Jun 8, 2001 10.95 11.00 10.95 11.00
2731 NASDAQ NATR Thu, Jun 7, 2001 10.55 11.04 10.43 11.04
2730 NASDAQ NATR Wed, Jun 6, 2001 11.00 11.00 10.81 10.99
2729 NASDAQ NATR Tue, Jun 5, 2001 11.00 11.08 10.95 11.07
2728 NASDAQ NATR Mon, Jun 4, 2001 11.00 11.09 10.76 11.05
2727 NASDAQ NATR Fri, Jun 1, 2001 11.15 11.31 10.25 10.94
2726 NASDAQ NATR Thu, May 31, 2001 9.87 11.60 9.87 11.09
2725 NASDAQ NATR Wed, May 30, 2001 10.18 10.25 10.10 10.25
2724 NASDAQ NATR Tue, May 29, 2001 10.15 10.20 10.05 10.18
2723 NASDAQ NATR Fri, May 25, 2001 9.99 10.17 9.99 10.17
2722 NASDAQ NATR Thu, May 24, 2001 9.90 10.15 9.90 9.95
2721 NASDAQ NATR Wed, May 23, 2001 10.05 10.19 9.70 10.02
2720 NASDAQ NATR Tue, May 22, 2001 9.75 10.19 9.60 10.00
2719 NASDAQ NATR Mon, May 21, 2001 9.49 10.00 9.49 9.80
2718 NASDAQ NATR Fri, May 18, 2001 10.06 10.10 9.49 9.49
2717 NASDAQ NATR Thu, May 17, 2001 9.95 10.19 9.95 10.00
2716 NASDAQ NATR Wed, May 16, 2001 10.31 10.31 9.95 9.95
2715 NASDAQ NATR Tue, May 15, 2001 9.95 10.35 9.94 10.32
2714 NASDAQ NATR Mon, May 14, 2001 10.30 10.30 10.00 10.06
2713 NASDAQ NATR Fri, May 11, 2001 8.98 11.29 8.91 10.18
2712 NASDAQ NATR Thu, May 10, 2001 8.88 8.99 8.88 8.98
2711 NASDAQ NATR Wed, May 9, 2001 8.64 9.00 8.63 8.88
2710 NASDAQ NATR Tue, May 8, 2001 8.72 8.85 8.66 8.85
2709 NASDAQ NATR Mon, May 7, 2001 8.80 8.82 8.77 8.77
2708 NASDAQ NATR Fri, May 4, 2001 8.90 8.92 8.73 8.88
2707 NASDAQ NATR Thu, May 3, 2001 8.95 8.95 8.90 8.94
2706 NASDAQ NATR Wed, May 2, 2001 8.96 8.99 8.95 8.97
2705 NASDAQ NATR Tue, May 1, 2001 8.98 9.00 8.85 8.91
2704 NASDAQ NATR Mon, Apr 30, 2001 8.56 8.99 8.55 8.95
2703 NASDAQ NATR Fri, Apr 27, 2001 8.40 8.61 8.40 8.60
2702 NASDAQ NATR Thu, Apr 26, 2001 8.30 8.49 8.30 8.44
2701 NASDAQ NATR Wed, Apr 25, 2001 8.30 8.48 8.30 8.40
2700 NASDAQ NATR Tue, Apr 24, 2001 8.31 8.40 8.31 8.36
2699 NASDAQ NATR Mon, Apr 23, 2001 8.26 8.30 8.25 8.25
2698 NASDAQ NATR Fri, Apr 20, 2001 8.01 8.35 8.01 8.26
2697 NASDAQ NATR Thu, Apr 19, 2001 7.76 8.13 7.60 8.00
2696 NASDAQ NATR Wed, Apr 18, 2001 7.59 8.13 7.55 7.98
2695 NASDAQ NATR Tue, Apr 17, 2001 7.43 7.60 7.43 7.60
2694 NASDAQ NATR Mon, Apr 16, 2001 7.60 7.60 7.40 7.51
2693 NASDAQ NATR Thu, Apr 12, 2001 7.41 7.60 7.41 7.45
2692 NASDAQ NATR Wed, Apr 11, 2001 7.59 7.60 7.40 7.51
2691 NASDAQ NATR Tue, Apr 10, 2001 7.15 7.53 7.15 7.40
2690 NASDAQ NATR Mon, Apr 9, 2001 7.00 7.48 7.00 7.41
2689 NASDAQ NATR Fri, Apr 6, 2001 7.00 7.13 7.00 7.13
2688 NASDAQ NATR Thu, Apr 5, 2001 6.75 7.19 6.75 7.19
2687 NASDAQ NATR Wed, Apr 4, 2001 7.00 7.19 6.75 6.88
2686 NASDAQ NATR Tue, Apr 3, 2001 7.13 7.13 7.00 7.00
2685 NASDAQ NATR Mon, Apr 2, 2001 7.00 7.31 6.94 7.13
2684 NASDAQ NATR Fri, Mar 30, 2001 7.00 7.06 6.78 6.94
2683 NASDAQ NATR Thu, Mar 29, 2001 7.19 7.25 7.03 7.03
2682 NASDAQ NATR Wed, Mar 28, 2001 7.63 7.63 7.00 7.19
2681 NASDAQ NATR Tue, Mar 27, 2001 7.66 7.69 7.53 7.63
2680 NASDAQ NATR Mon, Mar 26, 2001 7.63 8.00 7.56 7.63
2679 NASDAQ NATR Fri, Mar 23, 2001 7.63 8.00 7.63 8.00
2678 NASDAQ NATR Thu, Mar 22, 2001 7.81 7.88 7.69 7.81
2677 NASDAQ NATR Wed, Mar 21, 2001 8.13 8.13 7.81 7.88
2676 NASDAQ NATR Tue, Mar 20, 2001 8.25 8.25 7.88 8.00
2675 NASDAQ NATR Mon, Mar 19, 2001 8.06 8.25 8.06 8.16
2674 NASDAQ NATR Fri, Mar 16, 2001 8.00 8.25 7.78 8.06
2673 NASDAQ NATR Thu, Mar 15, 2001 8.19 8.25 7.78 7.78
2672 NASDAQ NATR Wed, Mar 14, 2001 8.19 8.25 8.19 8.25
2671 NASDAQ NATR Tue, Mar 13, 2001 8.94 9.06 8.19 8.28
2670 NASDAQ NATR Mon, Mar 12, 2001 9.06 9.06 8.88 9.00
2669 NASDAQ NATR Fri, Mar 9, 2001 9.25 9.34 9.13 9.25
2668 NASDAQ NATR Thu, Mar 8, 2001 8.88 9.44 8.88 9.25
2667 NASDAQ NATR Wed, Mar 7, 2001 8.38 9.19 8.31 9.00
2666 NASDAQ NATR Tue, Mar 6, 2001 8.38 8.38 8.13 8.34
2665 NASDAQ NATR Mon, Mar 5, 2001 8.06 8.38 8.06 8.16
2664 NASDAQ NATR Fri, Mar 2, 2001 7.66 8.25 7.66 8.25
2663 NASDAQ NATR Thu, Mar 1, 2001 7.53 8.08 7.53 8.00
2662 NASDAQ NATR Wed, Feb 28, 2001 7.63 8.00 7.63 7.63
2661 NASDAQ NATR Tue, Feb 27, 2001 8.38 8.88 7.56 7.56
2660 NASDAQ NATR Mon, Feb 26, 2001 8.88 8.94 8.41 8.41
2659 NASDAQ NATR Fri, Feb 23, 2001 9.25 9.25 9.00 9.00
2658 NASDAQ NATR Thu, Feb 22, 2001 9.22 9.34 9.06 9.33
2657 NASDAQ NATR Wed, Feb 21, 2001 9.31 9.38 9.19 9.25
2656 NASDAQ NATR Tue, Feb 20, 2001 9.19 9.38 9.19 9.31
2655 NASDAQ NATR Fri, Feb 16, 2001 9.13 9.38 9.06 9.19
2654 NASDAQ NATR Thu, Feb 15, 2001 8.81 9.38 8.63 9.38
2653 NASDAQ NATR Wed, Feb 14, 2001 8.77 8.81 8.66 8.66
2652 NASDAQ NATR Tue, Feb 13, 2001 9.00 9.13 8.75 8.78
2651 NASDAQ NATR Mon, Feb 12, 2001 8.86 9.00 8.50 9.00
2650 NASDAQ NATR Fri, Feb 9, 2001 8.38 8.88 8.38 8.81
2649 NASDAQ NATR Thu, Feb 8, 2001 8.38 8.63 8.31 8.63
2648 NASDAQ NATR Wed, Feb 7, 2001 7.75 8.47 7.63 8.36
2647 NASDAQ NATR Tue, Feb 6, 2001 7.38 7.69 7.38 7.69
2646 NASDAQ NATR Mon, Feb 5, 2001 7.38 7.63 7.38 7.63
2645 NASDAQ NATR Fri, Feb 2, 2001 7.06 7.63 7.06 7.56
2644 NASDAQ NATR Thu, Feb 1, 2001 6.97 7.50 6.94 7.44
2643 NASDAQ NATR Wed, Jan 31, 2001 6.94 7.13 6.94 7.00
2642 NASDAQ NATR Tue, Jan 30, 2001 7.00 7.13 6.94 6.95
2641 NASDAQ NATR Mon, Jan 29, 2001 6.91 7.19 6.91 7.03
2640 NASDAQ NATR Fri, Jan 26, 2001 6.94 7.06 6.91 7.00
2639 NASDAQ NATR Thu, Jan 25, 2001 6.94 7.06 6.94 6.97
2638 NASDAQ NATR Wed, Jan 24, 2001 7.19 7.19 6.94 6.94
2637 NASDAQ NATR Tue, Jan 23, 2001 7.00 7.19 7.00 7.13
2636 NASDAQ NATR Mon, Jan 22, 2001 7.13 7.25 7.00 7.19
2635 NASDAQ NATR Fri, Jan 19, 2001 7.00 7.19 7.00 7.13
2634 NASDAQ NATR Thu, Jan 18, 2001 7.22 7.25 7.00 7.00
2633 NASDAQ NATR Wed, Jan 17, 2001 7.00 7.25 7.00 7.19
2632 NASDAQ NATR Tue, Jan 16, 2001 7.00 7.19 7.00 7.00
2631 NASDAQ NATR Fri, Jan 12, 2001 7.19 7.25 7.13 7.13
2630 NASDAQ NATR Thu, Jan 11, 2001 7.00 7.25 7.00 7.19
2629 NASDAQ NATR Wed, Jan 10, 2001 6.75 7.06 6.75 7.06
2628 NASDAQ NATR Tue, Jan 9, 2001 6.50 6.88 6.50 6.88
2627 NASDAQ NATR Mon, Jan 8, 2001 6.56 6.69 6.50 6.56
2626 NASDAQ NATR Fri, Jan 5, 2001 7.00 7.00 5.69 6.75
2625 NASDAQ NATR Thu, Jan 4, 2001 6.75 7.19 6.75 7.19
2624 NASDAQ NATR Wed, Jan 3, 2001 6.81 7.13 6.81 6.88
2623 NASDAQ NATR Tue, Jan 2, 2001 6.63 7.00 6.63 7.00
2622 NASDAQ NATR Fri, Dec 29, 2000 6.59 6.94 6.50 6.81
2621 NASDAQ NATR Thu, Dec 28, 2000 6.38 6.63 6.38 6.50
2620 NASDAQ NATR Wed, Dec 27, 2000 6.44 6.63 6.41 6.56
2619 NASDAQ NATR Tue, Dec 26, 2000 6.50 6.50 6.41 6.44
2618 NASDAQ NATR Fri, Dec 22, 2000 6.63 6.88 6.50 6.50
2617 NASDAQ NATR Thu, Dec 21, 2000 6.75 6.75 6.75 6.75
2616 NASDAQ NATR Wed, Dec 20, 2000 6.94 6.94 6.75 6.75
2615 NASDAQ NATR Tue, Dec 19, 2000 6.94 6.94 6.88 6.88
2614 NASDAQ NATR Mon, Dec 18, 2000 6.56 6.94 6.50 6.94
2613 NASDAQ NATR Fri, Dec 15, 2000 6.50 6.63 6.50 6.63
2612 NASDAQ NATR Thu, Dec 14, 2000 6.44 6.75 6.44 6.53
2611 NASDAQ NATR Wed, Dec 13, 2000 6.52 6.75 6.38 6.75
2610 NASDAQ NATR Tue, Dec 12, 2000 6.88 6.92 6.50 6.52
2609 NASDAQ NATR Mon, Dec 11, 2000 6.88 6.88 6.75 6.88
2608 NASDAQ NATR Fri, Dec 8, 2000 6.63 6.88 6.63 6.75
2607 NASDAQ NATR Thu, Dec 7, 2000 6.63 6.69 6.50 6.56
2606 NASDAQ NATR Wed, Dec 6, 2000 6.69 6.75 6.63 6.63
2605 NASDAQ NATR Tue, Dec 5, 2000 6.75 6.88 6.50 6.50
2604 NASDAQ NATR Mon, Dec 4, 2000 6.50 6.88 6.50 6.88
2603 NASDAQ NATR Fri, Dec 1, 2000 6.75 6.75 6.50 6.50
2602 NASDAQ NATR Thu, Nov 30, 2000 6.50 7.00 6.50 6.63
2601 NASDAQ NATR Wed, Nov 29, 2000 6.75 6.75 6.50 6.56
2600 NASDAQ NATR Tue, Nov 28, 2000 6.94 7.00 6.75 6.75
2599 NASDAQ NATR Mon, Nov 27, 2000 6.94 7.06 6.94 7.00
2598 NASDAQ NATR Fri, Nov 24, 2000 6.94 6.94 6.94 6.94
2597 NASDAQ NATR Wed, Nov 22, 2000 6.94 7.06 6.94 6.94
2596 NASDAQ NATR Tue, Nov 21, 2000 6.75 7.06 6.75 7.00
2595 NASDAQ NATR Mon, Nov 20, 2000 6.75 6.91 6.75 6.75
2594 NASDAQ NATR Fri, Nov 17, 2000 6.94 6.94 6.75 6.75
2593 NASDAQ NATR Thu, Nov 16, 2000 6.94 6.94 6.81 6.94
2592 NASDAQ NATR Wed, Nov 15, 2000 6.91 6.94 6.81 6.91
2591 NASDAQ NATR Tue, Nov 14, 2000 7.00 7.13 6.81 6.94
2590 NASDAQ NATR Mon, Nov 13, 2000 6.88 7.06 6.75 7.00
2589 NASDAQ NATR Fri, Nov 10, 2000 6.88 6.97 6.88 6.88
2588 NASDAQ NATR Thu, Nov 9, 2000 6.94 7.13 6.88 7.13
2587 NASDAQ NATR Wed, Nov 8, 2000 7.06 7.13 7.00 7.00
2586 NASDAQ NATR Tue, Nov 7, 2000 6.94 7.06 6.94 6.94
2585 NASDAQ NATR Mon, Nov 6, 2000 7.13 7.13 6.88 7.00
2584 NASDAQ NATR Fri, Nov 3, 2000 6.88 7.13 6.88 6.94
2583 NASDAQ NATR Thu, Nov 2, 2000 6.81 7.00 6.81 6.81
2582 NASDAQ NATR Wed, Nov 1, 2000 7.00 7.03 6.75 6.75
2581 NASDAQ NATR Tue, Oct 31, 2000 7.00 7.19 7.00 7.06
2580 NASDAQ NATR Mon, Oct 30, 2000 6.89 7.13 6.89 7.00
2579 NASDAQ NATR Fri, Oct 27, 2000 7.06 7.19 6.94 7.06
2578 NASDAQ NATR Thu, Oct 26, 2000 7.13 7.25 6.94 7.16
2577 NASDAQ NATR Wed, Oct 25, 2000 7.03 7.19 7.03 7.16
2576 NASDAQ NATR Tue, Oct 24, 2000 7.19 7.19 7.03 7.09
2575 NASDAQ NATR Mon, Oct 23, 2000 7.22 7.22 7.19 7.19
2574 NASDAQ NATR Fri, Oct 20, 2000 7.13 7.25 7.13 7.19
2573 NASDAQ NATR Thu, Oct 19, 2000 7.13 7.25 7.13 7.13
2572 NASDAQ NATR Wed, Oct 18, 2000 7.03 7.25 7.00 7.13
2571 NASDAQ NATR Tue, Oct 17, 2000 7.03 7.06 7.00 7.06
2570 NASDAQ NATR Mon, Oct 16, 2000 7.13 7.16 7.00 7.06
2569 NASDAQ NATR Fri, Oct 13, 2000 7.03 7.19 6.94 7.00
2568 NASDAQ NATR Thu, Oct 12, 2000 7.00 7.09 7.00 7.02
2567 NASDAQ NATR Wed, Oct 11, 2000 7.03 7.25 6.97 7.03
2566 NASDAQ NATR Tue, Oct 10, 2000 7.06 7.19 7.00 7.06
2565 NASDAQ NATR Mon, Oct 9, 2000 7.31 7.38 7.03 7.03
2564 NASDAQ NATR Fri, Oct 6, 2000 7.31 7.38 7.31 7.38
2563 NASDAQ NATR Thu, Oct 5, 2000 7.25 7.38 7.25 7.34
2562 NASDAQ NATR Wed, Oct 4, 2000 7.19 7.38 7.19 7.38
2561 NASDAQ NATR Tue, Oct 3, 2000 7.25 7.31 7.19 7.28
2560 NASDAQ NATR Mon, Oct 2, 2000 7.31 7.34 7.25 7.34
2559 NASDAQ NATR Fri, Sep 29, 2000 7.25 7.44 7.25 7.44
2558 NASDAQ NATR Thu, Sep 28, 2000 7.25 7.50 7.25 7.44
2557 NASDAQ NATR Wed, Sep 27, 2000 7.25 7.28 7.19 7.19
2556 NASDAQ NATR Tue, Sep 26, 2000 7.31 7.44 7.25 7.25
2555 NASDAQ NATR Mon, Sep 25, 2000 7.41 7.56 7.31 7.44
2554 NASDAQ NATR Fri, Sep 22, 2000 7.31 7.63 7.31 7.44
2553 NASDAQ NATR Thu, Sep 21, 2000 7.44 7.56 7.38 7.50
2552 NASDAQ NATR Wed, Sep 20, 2000 7.38 7.56 7.31 7.56
2551 NASDAQ NATR Tue, Sep 19, 2000 7.38 7.44 7.25 7.38
2550 NASDAQ NATR Mon, Sep 18, 2000 7.38 7.50 7.38 7.38
2549 NASDAQ NATR Fri, Sep 15, 2000 7.63 7.75 7.38 7.38
2548 NASDAQ NATR Thu, Sep 14, 2000 7.66 7.69 7.63 7.63
2547 NASDAQ NATR Wed, Sep 13, 2000 7.50 7.69 7.50 7.66
2546 NASDAQ NATR Tue, Sep 12, 2000 7.38 7.75 7.38 7.56
2545 NASDAQ NATR Mon, Sep 11, 2000 7.72 8.13 7.25 7.47
2544 NASDAQ NATR Fri, Sep 8, 2000 7.69 7.75 7.69 7.72
2543 NASDAQ NATR Thu, Sep 7, 2000 7.69 7.75 7.69 7.75
2542 NASDAQ NATR Wed, Sep 6, 2000 7.69 7.75 7.69 7.75
2541 NASDAQ NATR Tue, Sep 5, 2000 7.63 7.81 7.63 7.81
2540 NASDAQ NATR Fri, Sep 1, 2000 7.75 7.88 7.69 7.69
2539 NASDAQ NATR Thu, Aug 31, 2000 7.75 7.88 7.69 7.88
2538 NASDAQ NATR Wed, Aug 30, 2000 7.88 7.88 7.69 7.69
2537 NASDAQ NATR Tue, Aug 29, 2000 8.00 8.00 7.75 7.98
2536 NASDAQ NATR Mon, Aug 28, 2000 7.50 8.00 7.50 8.00
2535 NASDAQ NATR Fri, Aug 25, 2000 7.44 7.75 7.44 7.69
2534 NASDAQ NATR Thu, Aug 24, 2000 7.63 7.69 7.56 7.56
2533 NASDAQ NATR Wed, Aug 23, 2000 7.75 7.75 7.75 7.75
2532 NASDAQ NATR Tue, Aug 22, 2000 7.25 7.63 7.25 7.63
2531 NASDAQ NATR Mon, Aug 21, 2000 7.75 7.75 7.31 7.38
2530 NASDAQ NATR Fri, Aug 18, 2000 7.63 7.75 7.56 7.63
2529 NASDAQ NATR Thu, Aug 17, 2000 7.50 7.75 7.50 7.69
2528 NASDAQ NATR Wed, Aug 16, 2000 7.44 7.63 7.38 7.63
2527 NASDAQ NATR Tue, Aug 15, 2000 7.63 7.63 7.44 7.44
2526 NASDAQ NATR Mon, Aug 14, 2000 7.50 7.75 7.50 7.56
2525 NASDAQ NATR Fri, Aug 11, 2000 7.53 7.69 7.53 7.63
2524 NASDAQ NATR Thu, Aug 10, 2000 7.50 7.94 7.50 7.63
2523 NASDAQ NATR Wed, Aug 9, 2000 7.56 7.63 7.56 7.56
2522 NASDAQ NATR Tue, Aug 8, 2000 7.50 7.63 7.50 7.63
2521 NASDAQ NATR Mon, Aug 7, 2000 7.63 7.63 7.50 7.50
2520 NASDAQ NATR Fri, Aug 4, 2000 7.63 7.63 7.56 7.56
2519 NASDAQ NATR Thu, Aug 3, 2000 7.56 7.75 7.50 7.56
2518 NASDAQ NATR Wed, Aug 2, 2000 7.63 7.63 7.56 7.56
2517 NASDAQ NATR Tue, Aug 1, 2000 7.63 7.75 7.50 7.56
2516 NASDAQ NATR Mon, Jul 31, 2000 7.50 8.00 7.38 8.00
2515 NASDAQ NATR Fri, Jul 28, 2000 7.50 7.88 7.50 7.50
2514 NASDAQ NATR Thu, Jul 27, 2000 7.53 7.88 7.50 7.50
2513 NASDAQ NATR Wed, Jul 26, 2000 7.75 7.88 7.56 7.56
2512 NASDAQ NATR Tue, Jul 25, 2000 7.56 7.88 7.50 7.56
2511 NASDAQ NATR Mon, Jul 24, 2000 7.50 7.75 7.50 7.75
2510 NASDAQ NATR Fri, Jul 21, 2000 7.63 7.63 7.50 7.50
2509 NASDAQ NATR Thu, Jul 20, 2000 8.00 8.00 7.63 7.63
2508 NASDAQ NATR Wed, Jul 19, 2000 8.00 8.13 7.75 7.81
2507 NASDAQ NATR Tue, Jul 18, 2000 7.63 8.13 7.63 7.94
2506 NASDAQ NATR Mon, Jul 17, 2000 7.69 7.88 7.50 7.69
2505 NASDAQ NATR Fri, Jul 14, 2000 8.28 8.28 7.50 7.50
2504 NASDAQ NATR Thu, Jul 13, 2000 7.53 8.00 7.53 8.00
2503 NASDAQ NATR Wed, Jul 12, 2000 7.44 7.56 7.44 7.53
2502 NASDAQ NATR Tue, Jul 11, 2000 7.38 7.53 7.38 7.50
2501 NASDAQ NATR Mon, Jul 10, 2000 7.38 7.50 7.31 7.38
2500 NASDAQ NATR Fri, Jul 7, 2000 7.31 7.44 7.00 7.44
2499 NASDAQ NATR Thu, Jul 6, 2000 6.75 7.31 6.69 7.31
2498 NASDAQ NATR Wed, Jul 5, 2000 6.97 6.97 6.69 6.81
2497 NASDAQ NATR Mon, Jul 3, 2000 7.03 7.03 6.75 6.88
2496 NASDAQ NATR Fri, Jun 30, 2000 7.25 8.38 6.63 7.00
2495 NASDAQ NATR Thu, Jun 29, 2000 7.13 7.56 7.13 7.31
2494 NASDAQ NATR Wed, Jun 28, 2000 7.16 7.38 7.16 7.25
2493 NASDAQ NATR Tue, Jun 27, 2000 7.25 7.25 7.16 7.16
2492 NASDAQ NATR Mon, Jun 26, 2000 7.31 7.38 7.00 7.19
2491 NASDAQ NATR Fri, Jun 23, 2000 7.31 7.63 7.25 7.31
2490 NASDAQ NATR Thu, Jun 22, 2000 7.25 7.50 7.25 7.34
2489 NASDAQ NATR Wed, Jun 21, 2000 7.38 7.44 7.25 7.44
2488 NASDAQ NATR Tue, Jun 20, 2000 7.31 7.38 7.25 7.38
2487 NASDAQ NATR Mon, Jun 19, 2000 7.06 7.50 7.06 7.31
2486 NASDAQ NATR Fri, Jun 16, 2000 7.38 7.44 7.06 7.13
2485 NASDAQ NATR Thu, Jun 15, 2000 7.38 7.38 7.25 7.25
2484 NASDAQ NATR Wed, Jun 14, 2000 7.25 7.50 7.22 7.50
2483 NASDAQ NATR Tue, Jun 13, 2000 7.28 7.44 7.25 7.28
2482 NASDAQ NATR Mon, Jun 12, 2000 7.50 7.50 7.38 7.41
2481 NASDAQ NATR Fri, Jun 9, 2000 7.41 7.50 7.38 7.44
2480 NASDAQ NATR Thu, Jun 8, 2000 7.44 7.47 7.38 7.39
2479 NASDAQ NATR Wed, Jun 7, 2000 7.38 7.50 7.38 7.50
2478 NASDAQ NATR Tue, Jun 6, 2000 7.31 7.50 7.25 7.41
2477 NASDAQ NATR Mon, Jun 5, 2000 7.59 7.59 7.25 7.31
2476 NASDAQ NATR Fri, Jun 2, 2000 7.25 7.41 7.25 7.34
2475 NASDAQ NATR Thu, Jun 1, 2000 7.50 7.63 7.00 7.25
2474 NASDAQ NATR Wed, May 31, 2000 7.84 7.84 7.50 7.56
2473 NASDAQ NATR Tue, May 30, 2000 7.63 7.72 7.53 7.56
2472 NASDAQ NATR Fri, May 26, 2000 7.81 7.81 7.50 7.75
2471 NASDAQ NATR Thu, May 25, 2000 8.06 8.06 7.75 7.75
2470 NASDAQ NATR Wed, May 24, 2000 7.75 8.03 7.75 7.81
2469 NASDAQ NATR Tue, May 23, 2000 7.75 7.88 7.63 7.63
2468 NASDAQ NATR Mon, May 22, 2000 7.88 7.88 7.66 7.75
2467 NASDAQ NATR Fri, May 19, 2000 7.75 7.88 7.63 7.81
2466 NASDAQ NATR Thu, May 18, 2000 7.75 7.88 7.63 7.75
2465 NASDAQ NATR Wed, May 17, 2000 7.81 7.94 7.73 7.78
2464 NASDAQ NATR Tue, May 16, 2000 7.88 8.00 7.75 7.75
2463 NASDAQ NATR Mon, May 15, 2000 7.94 8.00 7.63 7.88
2462 NASDAQ NATR Fri, May 12, 2000 8.44 8.63 7.88 7.88
2461 NASDAQ NATR Thu, May 11, 2000 8.44 8.69 8.31 8.44
2460 NASDAQ NATR Wed, May 10, 2000 8.63 8.75 8.44 8.53
2459 NASDAQ NATR Tue, May 9, 2000 8.50 8.75 8.50 8.75
2458 NASDAQ NATR Mon, May 8, 2000 8.75 8.88 8.56 8.69
2457 NASDAQ NATR Fri, May 5, 2000 8.81 8.94 8.69 8.83
2456 NASDAQ NATR Thu, May 4, 2000 8.69 9.00 8.69 9.00
2455 NASDAQ NATR Wed, May 3, 2000 9.00 9.13 8.56 8.88
2454 NASDAQ NATR Tue, May 2, 2000 8.69 8.94 8.63 8.75
2453 NASDAQ NATR Mon, May 1, 2000 8.75 9.00 8.63 8.88
2452 NASDAQ NATR Fri, Apr 28, 2000 8.25 8.56 8.25 8.50
2451 NASDAQ NATR Thu, Apr 27, 2000 8.50 8.50 8.25 8.44
2450 NASDAQ NATR Wed, Apr 26, 2000 8.44 8.50 8.41 8.41
2449 NASDAQ NATR Tue, Apr 25, 2000 8.00 8.31 8.00 8.00
2448 NASDAQ NATR Mon, Apr 24, 2000 7.88 8.13 7.75 8.00
2447 NASDAQ NATR Thu, Apr 20, 2000 8.38 8.38 7.88 7.88
2446 NASDAQ NATR Wed, Apr 19, 2000 7.75 8.13 7.75 8.00
2445 NASDAQ NATR Tue, Apr 18, 2000 7.63 7.88 7.63 7.75
2444 NASDAQ NATR Mon, Apr 17, 2000 7.50 8.00 7.25 7.63
2443 NASDAQ NATR Fri, Apr 14, 2000 7.63 8.13 7.50 8.00
2442 NASDAQ NATR Thu, Apr 13, 2000 8.13 8.19 7.88 7.94
2441 NASDAQ NATR Wed, Apr 12, 2000 8.38 8.56 8.00 8.00
2440 NASDAQ NATR Tue, Apr 11, 2000 8.25 8.63 8.13 8.50
2439 NASDAQ NATR Mon, Apr 10, 2000 8.25 8.38 8.13 8.13
2438 NASDAQ NATR Fri, Apr 7, 2000 8.50 8.63 8.19 8.19
2437 NASDAQ NATR Thu, Apr 6, 2000 8.50 8.81 8.50 8.50
2436 NASDAQ NATR Wed, Apr 5, 2000 8.50 8.88 8.44 8.81
2435 NASDAQ NATR Tue, Apr 4, 2000 8.81 9.00 8.50 8.78
2434 NASDAQ NATR Mon, Apr 3, 2000 8.00 8.94 8.00 8.94
2433 NASDAQ NATR Fri, Mar 31, 2000 8.25 8.38 8.00 8.00
2432 NASDAQ NATR Thu, Mar 30, 2000 8.63 8.78 8.25 8.38
2431 NASDAQ NATR Wed, Mar 29, 2000 8.75 8.78 8.56 8.63
2430 NASDAQ NATR Tue, Mar 28, 2000 8.97 9.19 8.75 8.75
2429 NASDAQ NATR Mon, Mar 27, 2000 9.06 9.06 8.63 8.88
2428 NASDAQ NATR Fri, Mar 24, 2000 8.44 9.00 8.44 9.00
2427 NASDAQ NATR Thu, Mar 23, 2000 8.38 8.56 8.38 8.56
2426 NASDAQ NATR Wed, Mar 22, 2000 8.44 8.50 8.25 8.38
2425 NASDAQ NATR Tue, Mar 21, 2000 8.69 8.75 8.50 8.50
2424 NASDAQ NATR Mon, Mar 20, 2000 8.88 9.00 8.63 8.69
2423 NASDAQ NATR Fri, Mar 17, 2000 9.13 9.19 8.94 9.06
2422 NASDAQ NATR Thu, Mar 16, 2000 9.00 9.25 8.88 9.06
2421 NASDAQ NATR Wed, Mar 15, 2000 9.13 9.38 9.00 9.13
2420 NASDAQ NATR Tue, Mar 14, 2000 8.75 9.25 8.75 9.25
2419 NASDAQ NATR Mon, Mar 13, 2000 8.88 9.06 8.75 8.75
2418 NASDAQ NATR Fri, Mar 10, 2000 8.81 9.31 8.81 8.94
2417 NASDAQ NATR Thu, Mar 9, 2000 9.19 9.38 8.75 9.06
2416 NASDAQ NATR Wed, Mar 8, 2000 9.56 9.56 9.25 9.25
2415 NASDAQ NATR Tue, Mar 7, 2000 9.88 9.88 9.56 9.81
2414 NASDAQ NATR Mon, Mar 6, 2000 9.94 10.00 9.50 9.50
2413 NASDAQ NATR Fri, Mar 3, 2000 9.88 10.25 9.88 9.88
2412 NASDAQ NATR Thu, Mar 2, 2000 10.13 10.25 9.88 9.88
2411 NASDAQ NATR Wed, Mar 1, 2000 10.56 10.63 10.00 10.00
2410 NASDAQ NATR Tue, Feb 29, 2000 9.38 10.50 9.38 10.50
2409 NASDAQ NATR Mon, Feb 28, 2000 9.88 10.00 9.50 9.75
2408 NASDAQ NATR Fri, Feb 25, 2000 10.19 10.19 9.75 9.75
2407 NASDAQ NATR Thu, Feb 24, 2000 9.00 10.38 9.00 10.06
2406 NASDAQ NATR Wed, Feb 23, 2000 8.50 9.13 8.38 9.00
2405 NASDAQ NATR Tue, Feb 22, 2000 8.75 9.00 8.44 8.50
2404 NASDAQ NATR Fri, Feb 18, 2000 8.75 8.78 8.50 8.75
2403 NASDAQ NATR Thu, Feb 17, 2000 8.94 9.00 8.75 8.75
2402 NASDAQ NATR Wed, Feb 16, 2000 8.88 8.94 8.88 8.88
2401 NASDAQ NATR Tue, Feb 15, 2000 8.88 9.06 8.88 8.98
2400 NASDAQ NATR Mon, Feb 14, 2000 8.88 8.94 8.88 8.88
2399 NASDAQ NATR Fri, Feb 11, 2000 8.94 8.94 8.88 8.94
2398 NASDAQ NATR Thu, Feb 10, 2000 8.75 9.00 8.75 8.91
2397 NASDAQ NATR Wed, Feb 9, 2000 8.69 9.00 8.69 8.75
2396 NASDAQ NATR Tue, Feb 8, 2000 8.50 9.00 8.13 8.75
2395 NASDAQ NATR Mon, Feb 7, 2000 8.50 8.56 8.13 8.13
2394 NASDAQ NATR Fri, Feb 4, 2000 8.25 8.56 8.06 8.38
2393 NASDAQ NATR Thu, Feb 3, 2000 8.75 8.81 8.25 8.69
2392 NASDAQ NATR Wed, Feb 2, 2000 8.50 8.81 8.38 8.59
2391 NASDAQ NATR Tue, Feb 1, 2000 8.50 8.88 8.25 8.50
2390 NASDAQ NATR Mon, Jan 31, 2000 8.25 8.75 8.13 8.75
2389 NASDAQ NATR Fri, Jan 28, 2000 8.50 8.94 8.25 8.50
2388 NASDAQ NATR Thu, Jan 27, 2000 8.50 8.75 8.50 8.63
2387 NASDAQ NATR Wed, Jan 26, 2000 8.38 8.75 8.38 8.50
2386 NASDAQ NATR Tue, Jan 25, 2000 8.50 8.75 8.38 8.50
2385 NASDAQ NATR Mon, Jan 24, 2000 8.75 8.88 8.75 8.75
2384 NASDAQ NATR Fri, Jan 21, 2000 9.06 9.19 8.88 8.94
2383 NASDAQ NATR Thu, Jan 20, 2000 8.94 9.19 8.75 9.19
2382 NASDAQ NATR Wed, Jan 19, 2000 8.75 9.13 8.75 8.88
2381 NASDAQ NATR Tue, Jan 18, 2000 8.63 9.19 8.63 9.19
2380 NASDAQ NATR Fri, Jan 14, 2000 8.88 9.03 8.75 8.88
2379 NASDAQ NATR Thu, Jan 13, 2000 8.69 9.25 8.56 9.25
2378 NASDAQ NATR Wed, Jan 12, 2000 8.63 8.75 8.53 8.53
2377 NASDAQ NATR Tue, Jan 11, 2000 9.66 9.69 9.00 9.13
2376 NASDAQ NATR Mon, Jan 10, 2000 9.09 9.63 9.00 9.63
2375 NASDAQ NATR Fri, Jan 7, 2000 8.75 9.00 8.31 9.00
2374 NASDAQ NATR Thu, Jan 6, 2000 9.06 9.38 8.25 8.75
2373 NASDAQ NATR Wed, Jan 5, 2000 7.81 8.44 7.75 8.13
2372 NASDAQ NATR Tue, Jan 4, 2000 7.81 8.00 7.81 7.84
2371 NASDAQ NATR Mon, Jan 3, 2000 8.00 8.13 7.81 8.13
2370 NASDAQ NATR Fri, Dec 31, 1999 7.94 8.19 7.88 8.00
2369 NASDAQ NATR Thu, Dec 30, 1999 8.41 8.47 7.88 8.00
2368 NASDAQ NATR Wed, Dec 29, 1999 8.22 8.47 8.19 8.47
2367 NASDAQ NATR Tue, Dec 28, 1999 7.80 8.19 7.63 8.19
2366 NASDAQ NATR Mon, Dec 27, 1999 7.50 8.00 7.25 7.83
2365 NASDAQ NATR Thu, Dec 23, 1999 7.63 7.88 7.50 7.53
2364 NASDAQ NATR Wed, Dec 22, 1999 7.50 7.88 7.50 7.63
2363 NASDAQ NATR Tue, Dec 21, 1999 7.63 7.88 7.50 7.50
2362 NASDAQ NATR Mon, Dec 20, 1999 8.00 8.13 7.56 7.63
2361 NASDAQ NATR Fri, Dec 17, 1999 8.13 8.19 8.00 8.00
2360 NASDAQ NATR Thu, Dec 16, 1999 8.06 8.13 8.00 8.13
2359 NASDAQ NATR Wed, Dec 15, 1999 8.38 8.39 8.00 8.13
2358 NASDAQ NATR Tue, Dec 14, 1999 8.19 8.50 8.19 8.38
2357 NASDAQ NATR Mon, Dec 13, 1999 7.50 8.69 7.44 8.19
2356 NASDAQ NATR Fri, Dec 10, 1999 7.38 7.63 7.38 7.50
2355 NASDAQ NATR Thu, Dec 9, 1999 7.75 7.75 7.13 7.13
2354 NASDAQ NATR Wed, Dec 8, 1999 7.44 7.56 7.38 7.56
2353 NASDAQ NATR Tue, Dec 7, 1999 7.63 7.66 7.25 7.31
2352 NASDAQ NATR Mon, Dec 6, 1999 8.13 8.13 7.19 7.75
2351 NASDAQ NATR Fri, Dec 3, 1999 8.22 8.31 8.13 8.25
2350 NASDAQ NATR Thu, Dec 2, 1999 8.25 8.38 8.13 8.13
2349 NASDAQ NATR Wed, Dec 1, 1999 8.38 8.50 8.25 8.31
2348 NASDAQ NATR Tue, Nov 30, 1999 8.50 8.63 8.44 8.44
2347 NASDAQ NATR Mon, Nov 29, 1999 8.44 8.75 8.44 8.75
2346 NASDAQ NATR Fri, Nov 26, 1999 8.38 8.50 8.38 8.38
2345 NASDAQ NATR Wed, Nov 24, 1999 8.25 8.75 8.19 8.25
2344 NASDAQ NATR Tue, Nov 23, 1999 8.25 8.69 8.19 8.69
2343 NASDAQ NATR Mon, Nov 22, 1999 9.13 9.13 8.00 8.25
2342 NASDAQ NATR Fri, Nov 19, 1999 8.38 9.75 8.38 9.50
2341 NASDAQ NATR Thu, Nov 18, 1999 7.94 8.38 7.88 8.38
2340 NASDAQ NATR Wed, Nov 17, 1999 7.19 7.94 7.19 7.88
2339 NASDAQ NATR Tue, Nov 16, 1999 7.00 7.50 7.00 7.25
2338 NASDAQ NATR Mon, Nov 15, 1999 7.06 7.13 7.00 7.00
2337 NASDAQ NATR Fri, Nov 12, 1999 7.03 7.25 6.94 7.25
2336 NASDAQ NATR Thu, Nov 11, 1999 7.09 7.19 6.94 7.06
2335 NASDAQ NATR Wed, Nov 10, 1999 7.19 7.22 7.00 7.06
2334 NASDAQ NATR Tue, Nov 9, 1999 7.13 7.25 7.00 7.25
2333 NASDAQ NATR Mon, Nov 8, 1999 7.25 7.25 7.06 7.13
2332 NASDAQ NATR Fri, Nov 5, 1999 7.13 7.38 7.00 7.25
2331 NASDAQ NATR Thu, Nov 4, 1999 7.19 7.25 7.13 7.19
2330 NASDAQ NATR Wed, Nov 3, 1999 7.19 7.25 7.06 7.25
2329 NASDAQ NATR Tue, Nov 2, 1999 7.25 7.25 7.19 7.25
2328 NASDAQ NATR Mon, Nov 1, 1999 7.50 7.50 7.13 7.25
2327 NASDAQ NATR Fri, Oct 29, 1999 7.91 7.91 7.25 7.38
2326 NASDAQ NATR Thu, Oct 28, 1999 7.91 8.00 7.81 7.84
2325 NASDAQ NATR Wed, Oct 27, 1999 7.81 7.97 7.75 7.88
2324 NASDAQ NATR Tue, Oct 26, 1999 7.81 8.00 7.81 7.88
2323 NASDAQ NATR Mon, Oct 25, 1999 7.72 8.06 7.72 7.94
2322 NASDAQ NATR Fri, Oct 22, 1999 7.94 8.00 7.63 7.75
2321 NASDAQ NATR Thu, Oct 21, 1999 7.94 8.25 7.94 8.00
2320 NASDAQ NATR Wed, Oct 20, 1999 7.75 8.25 7.75 8.00
2319 NASDAQ NATR Tue, Oct 19, 1999 7.50 8.00 7.50 7.75
2318 NASDAQ NATR Mon, Oct 18, 1999 8.06 8.13 7.44 7.69
2317 NASDAQ NATR Fri, Oct 15, 1999 7.50 8.69 7.25 8.16
2316 NASDAQ NATR Thu, Oct 14, 1999 7.38 7.56 7.25 7.50
2315 NASDAQ NATR Wed, Oct 13, 1999 7.94 8.00 7.31 7.38
2314 NASDAQ NATR Tue, Oct 12, 1999 8.25 8.31 7.69 8.00
2313 NASDAQ NATR Mon, Oct 11, 1999 8.38 8.63 8.25 8.31
2312 NASDAQ NATR Fri, Oct 8, 1999 8.31 8.75 8.25 8.50
2311 NASDAQ NATR Thu, Oct 7, 1999 8.25 8.63 8.13 8.25
2310 NASDAQ NATR Wed, Oct 6, 1999 8.94 9.00 8.13 8.38
2309 NASDAQ NATR Tue, Oct 5, 1999 9.28 9.28 8.78 8.94
2308 NASDAQ NATR Mon, Oct 4, 1999 9.47 9.47 9.25 9.28
2307 NASDAQ NATR Fri, Oct 1, 1999 9.63 9.69 9.47 9.50
2306 NASDAQ NATR Thu, Sep 30, 1999 9.25 9.69 9.25 9.47
2305 NASDAQ NATR Wed, Sep 29, 1999 9.53 9.69 9.31 9.31
2304 NASDAQ NATR Tue, Sep 28, 1999 9.22 9.63 9.13 9.63
2303 NASDAQ NATR Mon, Sep 27, 1999 9.38 9.53 9.38 9.53
2302 NASDAQ NATR Fri, Sep 24, 1999 9.56 9.56 9.50 9.50
2301 NASDAQ NATR Thu, Sep 23, 1999 9.28 9.69 9.25 9.56
2300 NASDAQ NATR Wed, Sep 22, 1999 9.00 9.38 9.00 9.25
2299 NASDAQ NATR Tue, Sep 21, 1999 9.25 9.25 8.81 9.06
2298 NASDAQ NATR Mon, Sep 20, 1999 9.44 9.50 9.13 9.25
2297 NASDAQ NATR Fri, Sep 17, 1999 9.63 9.88 9.44 9.44
2296 NASDAQ NATR Thu, Sep 16, 1999 9.94 9.97 9.38 9.38
2295 NASDAQ NATR Wed, Sep 15, 1999 9.94 10.00 9.75 9.97
2294 NASDAQ NATR Tue, Sep 14, 1999 9.25 10.25 9.25 10.06
2293 NASDAQ NATR Mon, Sep 13, 1999 9.56 9.56 9.19 9.25
2292 NASDAQ NATR Fri, Sep 10, 1999 9.56 9.63 9.56 9.56
2291 NASDAQ NATR Thu, Sep 9, 1999 9.56 9.63 9.56 9.56
2290 NASDAQ NATR Wed, Sep 8, 1999 9.56 9.63 9.50 9.63
2289 NASDAQ NATR Tue, Sep 7, 1999 9.66 9.81 9.56 9.63
2288 NASDAQ NATR Fri, Sep 3, 1999 9.56 9.75 9.56 9.75
2287 NASDAQ NATR Thu, Sep 2, 1999 9.56 9.69 9.56 9.56
2286 NASDAQ NATR Wed, Sep 1, 1999 9.81 9.81 9.56 9.56
2285 NASDAQ NATR Tue, Aug 31, 1999 9.75 9.88 9.75 9.75
2284 NASDAQ NATR Mon, Aug 30, 1999 9.81 9.88 9.69 9.88
2283 NASDAQ NATR Fri, Aug 27, 1999 9.80 9.94 9.78 9.81
2282 NASDAQ NATR Thu, Aug 26, 1999 9.63 9.81 9.56 9.81
2281 NASDAQ NATR Wed, Aug 25, 1999 9.63 9.81 9.63 9.63
2280 NASDAQ NATR Tue, Aug 24, 1999 9.56 9.75 9.56 9.75
2279 NASDAQ NATR Mon, Aug 23, 1999 9.50 9.75 9.38 9.56
2278 NASDAQ NATR Fri, Aug 20, 1999 9.63 9.69 9.50 9.69
2277 NASDAQ NATR Thu, Aug 19, 1999 9.25 9.63 9.06 9.63
2276 NASDAQ NATR Wed, Aug 18, 1999 9.56 9.56 9.19 9.19
2275 NASDAQ NATR Tue, Aug 17, 1999 9.69 9.75 9.50 9.75
2274 NASDAQ NATR Mon, Aug 16, 1999 9.44 9.75 9.44 9.75
2273 NASDAQ NATR Fri, Aug 13, 1999 9.50 9.69 9.38 9.69
2272 NASDAQ NATR Thu, Aug 12, 1999 9.25 9.56 9.25 9.56
2271 NASDAQ NATR Wed, Aug 11, 1999 9.39 9.47 9.31 9.38
2270 NASDAQ NATR Tue, Aug 10, 1999 9.06 9.38 9.06 9.25
2269 NASDAQ NATR Mon, Aug 9, 1999 9.00 9.09 9.00 9.09
2268 NASDAQ NATR Fri, Aug 6, 1999 9.00 9.06 9.00 9.00
2267 NASDAQ NATR Thu, Aug 5, 1999 9.25 9.25 9.00 9.00
2266 NASDAQ NATR Wed, Aug 4, 1999 9.25 9.31 9.19 9.31
2265 NASDAQ NATR Tue, Aug 3, 1999 9.44 9.44 9.13 9.25
2264 NASDAQ NATR Mon, Aug 2, 1999 9.44 9.75 9.38 9.44
2263 NASDAQ NATR Fri, Jul 30, 1999 8.75 9.97 8.75 9.38
2262 NASDAQ NATR Thu, Jul 29, 1999 9.50 9.56 8.75 8.81
2261 NASDAQ NATR Wed, Jul 28, 1999 9.75 9.94 9.56 9.56
2260 NASDAQ NATR Tue, Jul 27, 1999 10.13 10.13 9.94 9.94
2259 NASDAQ NATR Mon, Jul 26, 1999 10.06 10.25 10.00 10.00
2258 NASDAQ NATR Fri, Jul 23, 1999 10.13 10.31 10.00 10.13
2257 NASDAQ NATR Thu, Jul 22, 1999 10.75 11.00 10.06 10.19
2256 NASDAQ NATR Wed, Jul 21, 1999 11.44 11.75 11.06 11.22
2255 NASDAQ NATR Tue, Jul 20, 1999 11.81 12.00 11.63 12.00
2254 NASDAQ NATR Mon, Jul 19, 1999 11.75 11.88 11.63 11.88
2253 NASDAQ NATR Fri, Jul 16, 1999 11.69 11.81 11.56 11.72
2252 NASDAQ NATR Thu, Jul 15, 1999 11.81 11.88 11.69 11.88
2251 NASDAQ NATR Wed, Jul 14, 1999 12.25 12.31 11.63 12.13
2250 NASDAQ NATR Tue, Jul 13, 1999 11.63 12.38 11.63 12.31
2249 NASDAQ NATR Mon, Jul 12, 1999 11.31 12.06 11.31 12.06
2248 NASDAQ NATR Fri, Jul 9, 1999 11.38 11.69 11.31 11.44
2247 NASDAQ NATR Thu, Jul 8, 1999 11.25 11.63 11.25 11.63
2246 NASDAQ NATR Wed, Jul 7, 1999 11.31 11.44 11.25 11.38
2245 NASDAQ NATR Tue, Jul 6, 1999 11.56 11.56 11.19 11.44
2244 NASDAQ NATR Fri, Jul 2, 1999 10.81 11.50 10.81 11.50
2243 NASDAQ NATR Thu, Jul 1, 1999 10.63 11.06 10.63 10.81
2242 NASDAQ NATR Wed, Jun 30, 1999 11.75 11.75 10.50 10.50
2241 NASDAQ NATR Tue, Jun 29, 1999 11.25 11.50 11.13 11.25
2240 NASDAQ NATR Mon, Jun 28, 1999 11.75 11.75 11.25 11.25
2239 NASDAQ NATR Fri, Jun 25, 1999 10.88 11.63 10.88 11.50
2238 NASDAQ NATR Thu, Jun 24, 1999 11.00 11.00 10.75 11.00
2237 NASDAQ NATR Wed, Jun 23, 1999 11.00 11.00 10.75 11.00
2236 NASDAQ NATR Tue, Jun 22, 1999 11.25 11.38 10.75 10.81
2235 NASDAQ NATR Mon, Jun 21, 1999 11.13 11.44 11.13 11.38
2234 NASDAQ NATR Fri, Jun 18, 1999 12.09 12.09 11.13 11.13
2233 NASDAQ NATR Thu, Jun 17, 1999 12.13 12.38 11.63 11.75
2232 NASDAQ NATR Wed, Jun 16, 1999 13.00 13.03 12.25 12.50
2231 NASDAQ NATR Tue, Jun 15, 1999 12.88 13.38 12.88 13.25
2230 NASDAQ NATR Mon, Jun 14, 1999 12.88 13.06 12.75 12.88
2229 NASDAQ NATR Fri, Jun 11, 1999 12.75 12.94 12.75 12.75
2228 NASDAQ NATR Thu, Jun 10, 1999 12.81 13.00 12.56 12.88
2227 NASDAQ NATR Wed, Jun 9, 1999 13.00 13.31 12.81 13.00
2226 NASDAQ NATR Tue, Jun 8, 1999 13.13 13.56 13.06 13.16
2225 NASDAQ NATR Mon, Jun 7, 1999 13.75 13.75 13.06 13.06
2224 NASDAQ NATR Fri, Jun 4, 1999 13.44 13.69 13.44 13.44
2223 NASDAQ NATR Thu, Jun 3, 1999 13.00 13.63 13.00 13.63
2222 NASDAQ NATR Wed, Jun 2, 1999 13.00 13.56 12.56 13.50
2221 NASDAQ NATR Tue, Jun 1, 1999 12.25 12.88 12.25 12.63
2220 NASDAQ NATR Fri, May 28, 1999 13.31 13.31 12.19 12.19
2219 NASDAQ NATR Thu, May 27, 1999 13.13 13.44 13.00 13.00
2218 NASDAQ NATR Wed, May 26, 1999 13.25 13.50 13.25 13.38
2217 NASDAQ NATR Tue, May 25, 1999 13.25 13.50 13.25 13.44
2216 NASDAQ NATR Mon, May 24, 1999 13.44 13.56 13.13 13.50
2215 NASDAQ NATR Fri, May 21, 1999 12.06 13.06 12.06 12.88
2214 NASDAQ NATR Thu, May 20, 1999 12.56 12.75 12.06 12.06
2213 NASDAQ NATR Wed, May 19, 1999 11.88 12.63 11.88 12.63
2212 NASDAQ NATR Tue, May 18, 1999 12.00 12.06 11.88 11.88
2211 NASDAQ NATR Mon, May 17, 1999 11.88 12.25 11.63 12.06
2210 NASDAQ NATR Fri, May 14, 1999 11.88 12.00 11.56 11.69
2209 NASDAQ NATR Thu, May 13, 1999 12.00 12.13 11.75 12.00
2208 NASDAQ NATR Wed, May 12, 1999 12.25 12.38 12.19 12.19
2207 NASDAQ NATR Tue, May 11, 1999 11.75 12.81 11.75 12.34
2206 NASDAQ NATR Mon, May 10, 1999 12.44 12.63 11.81 11.94
2205 NASDAQ NATR Fri, May 7, 1999 10.63 12.38 10.63 12.19
2204 NASDAQ NATR Thu, May 6, 1999 10.56 10.75 10.50 10.72
2203 NASDAQ NATR Wed, May 5, 1999 10.75 10.75 10.25 10.75
2202 NASDAQ NATR Tue, May 4, 1999 10.88 10.88 10.56 10.75
2201 NASDAQ NATR Mon, May 3, 1999 11.06 11.13 10.75 11.00
2200 NASDAQ NATR Fri, Apr 30, 1999 11.00 11.06 10.69 10.69
2199 NASDAQ NATR Thu, Apr 29, 1999 10.44 11.00 10.44 10.94
2198 NASDAQ NATR Wed, Apr 28, 1999 10.81 11.19 10.44 10.50
2197 NASDAQ NATR Tue, Apr 27, 1999 10.88 11.19 10.75 11.00
2196 NASDAQ NATR Mon, Apr 26, 1999 11.00 11.38 10.75 11.19
2195 NASDAQ NATR Fri, Apr 23, 1999 11.06 11.31 10.56 10.75
2194 NASDAQ NATR Thu, Apr 22, 1999 12.06 12.31 11.06 11.06
2193 NASDAQ NATR Wed, Apr 21, 1999 10.75 12.19 10.75 12.00
2192 NASDAQ NATR Tue, Apr 20, 1999 10.56 11.25 10.56 10.75
2191 NASDAQ NATR Mon, Apr 19, 1999 10.94 11.00 10.50 10.56
2190 NASDAQ NATR Fri, Apr 16, 1999 9.88 10.81 9.81 10.81
2189 NASDAQ NATR Thu, Apr 15, 1999 9.75 10.13 9.75 9.81
2188 NASDAQ NATR Wed, Apr 14, 1999 10.38 10.75 9.75 9.75
2187 NASDAQ NATR Tue, Apr 13, 1999 10.63 10.94 10.38 10.38
2186 NASDAQ NATR Mon, Apr 12, 1999 10.56 10.88 10.44 10.75
2185 NASDAQ NATR Fri, Apr 9, 1999 10.50 11.00 10.50 10.69
2184 NASDAQ NATR Thu, Apr 8, 1999 10.75 10.88 10.38 10.69
2183 NASDAQ NATR Wed, Apr 7, 1999 10.63 11.06 10.56 10.75
2182 NASDAQ NATR Tue, Apr 6, 1999 11.00 11.00 10.63 10.75
2181 NASDAQ NATR Mon, Apr 5, 1999 11.25 11.50 10.75 11.19
2180 NASDAQ NATR Thu, Apr 1, 1999 10.81 11.13 10.75 10.81
2179 NASDAQ NATR Wed, Mar 31, 1999 11.50 11.50 11.00 11.00
2178 NASDAQ NATR Tue, Mar 30, 1999 11.06 11.38 10.75 11.22
2177 NASDAQ NATR Mon, Mar 29, 1999 10.94 11.25 10.94 11.13
2176 NASDAQ NATR Fri, Mar 26, 1999 11.06 11.44 11.00 11.00
2175 NASDAQ NATR Thu, Mar 25, 1999 11.00 11.44 11.00 11.09
2174 NASDAQ NATR Wed, Mar 24, 1999 11.88 12.00 11.00 11.13
2173 NASDAQ NATR Tue, Mar 23, 1999 12.50 12.50 11.36 11.63
2172 NASDAQ NATR Mon, Mar 22, 1999 12.75 12.75 12.63 12.63
2171 NASDAQ NATR Fri, Mar 19, 1999 12.94 13.13 12.44 12.50
2170 NASDAQ NATR Thu, Mar 18, 1999 11.81 13.06 11.81 13.00
2169 NASDAQ NATR Wed, Mar 17, 1999 11.94 12.00 11.63 12.00
2168 NASDAQ NATR Tue, Mar 16, 1999 11.88 12.25 11.63 12.13
2167 NASDAQ NATR Mon, Mar 15, 1999 12.19 12.56 11.56 11.88
2166 NASDAQ NATR Fri, Mar 12, 1999 13.00 13.03 12.13 12.56
2165 NASDAQ NATR Thu, Mar 11, 1999 13.38 13.38 13.00 13.00
2164 NASDAQ NATR Wed, Mar 10, 1999 15.13 15.13 13.00 13.38
2163 NASDAQ NATR Tue, Mar 9, 1999 13.00 15.13 13.00 15.13
2162 NASDAQ NATR Mon, Mar 8, 1999 12.75 13.25 12.75 13.25
2161 NASDAQ NATR Fri, Mar 5, 1999 13.00 13.25 12.81 12.94
2160 NASDAQ NATR Thu, Mar 4, 1999 12.63 13.00 12.63 12.94
2159 NASDAQ NATR Wed, Mar 3, 1999 12.50 13.25 12.50 12.88
2158 NASDAQ NATR Tue, Mar 2, 1999 12.63 12.88 12.50 12.75
2157 NASDAQ NATR Mon, Mar 1, 1999 12.81 12.94 12.25 12.25
2156 NASDAQ NATR Fri, Feb 26, 1999 12.75 13.00 12.25 12.25
2155 NASDAQ NATR Thu, Feb 25, 1999 13.00 13.13 12.13 12.75
2154 NASDAQ NATR Wed, Feb 24, 1999 12.38 13.25 12.38 13.13
2153 NASDAQ NATR Tue, Feb 23, 1999 12.00 12.44 12.00 12.25
2152 NASDAQ NATR Mon, Feb 22, 1999 11.56 12.19 11.56 12.19
2151 NASDAQ NATR Fri, Feb 19, 1999 11.50 11.69 11.50 11.69
2150 NASDAQ NATR Thu, Feb 18, 1999 11.75 11.75 11.44 11.50
2149 NASDAQ NATR Wed, Feb 17, 1999 12.38 12.38 11.13 11.56
2148 NASDAQ NATR Tue, Feb 16, 1999 12.38 12.50 12.31 12.31
2147 NASDAQ NATR Fri, Feb 12, 1999 12.88 12.88 12.38 12.38
2146 NASDAQ NATR Thu, Feb 11, 1999 12.88 13.00 12.50 12.50
2145 NASDAQ NATR Wed, Feb 10, 1999 13.06 13.06 12.88 13.00
2144 NASDAQ NATR Tue, Feb 9, 1999 13.00 13.13 12.94 12.94
2143 NASDAQ NATR Mon, Feb 8, 1999 12.94 13.06 12.81 13.00
2142 NASDAQ NATR Fri, Feb 5, 1999 13.19 13.19 12.38 12.88
2141 NASDAQ NATR Thu, Feb 4, 1999 13.38 13.63 12.88 13.00
2140 NASDAQ NATR Wed, Feb 3, 1999 13.38 13.63 13.06 13.63
2139 NASDAQ NATR Tue, Feb 2, 1999 13.63 14.25 13.25 13.50
2138 NASDAQ NATR Mon, Feb 1, 1999 13.25 13.50 13.25 13.31
2137 NASDAQ NATR Fri, Jan 29, 1999 13.25 13.31 13.06 13.31
2136 NASDAQ NATR Thu, Jan 28, 1999 13.06 13.44 13.06 13.25
2135 NASDAQ NATR Wed, Jan 27, 1999 13.75 14.13 13.13 13.25
2134 NASDAQ NATR Tue, Jan 26, 1999 13.88 14.38 13.75 14.13
2133 NASDAQ NATR Mon, Jan 25, 1999 13.63 14.13 13.50 13.94
2132 NASDAQ NATR Fri, Jan 22, 1999 13.69 14.19 13.31 14.19
2131 NASDAQ NATR Thu, Jan 21, 1999 14.00 14.38 13.25 13.50
2130 NASDAQ NATR Wed, Jan 20, 1999 14.63 14.88 14.00 14.25
2129 NASDAQ NATR Tue, Jan 19, 1999 15.00 15.25 14.63 14.63
2128 NASDAQ NATR Fri, Jan 15, 1999 14.75 15.00 14.63 15.00
2127 NASDAQ NATR Thu, Jan 14, 1999 14.88 15.00 14.63 14.63
2126 NASDAQ NATR Wed, Jan 13, 1999 14.50 15.00 14.50 14.81
2125 NASDAQ NATR Tue, Jan 12, 1999 14.88 15.25 14.88 14.88
2124 NASDAQ NATR Mon, Jan 11, 1999 15.00 15.00 14.75 15.00
2123 NASDAQ NATR Fri, Jan 8, 1999 15.00 15.13 14.75 14.88
2122 NASDAQ NATR Thu, Jan 7, 1999 14.75 15.13 14.75 15.13
2121 NASDAQ NATR Wed, Jan 6, 1999 15.38 15.75 14.50 15.00
2120 NASDAQ NATR Tue, Jan 5, 1999 15.75 15.88 15.25 15.38
2119 NASDAQ NATR Mon, Jan 4, 1999 15.25 15.63 14.88 15.50
2118 NASDAQ NATR Thu, Dec 31, 1998 14.38 15.25 14.25 15.25
2117 NASDAQ NATR Wed, Dec 30, 1998 14.63 14.75 14.25 14.38
2116 NASDAQ NATR Tue, Dec 29, 1998 15.19 15.19 14.63 14.75
2115 NASDAQ NATR Mon, Dec 28, 1998 14.50 15.13 14.50 14.75
2114 NASDAQ NATR Thu, Dec 24, 1998 15.00 15.00 14.38 14.63
2113 NASDAQ NATR Wed, Dec 23, 1998 14.63 15.19 14.50 14.69
2112 NASDAQ NATR Tue, Dec 22, 1998 14.38 15.13 14.38 14.75
2111 NASDAQ NATR Mon, Dec 21, 1998 15.75 16.00 14.38 14.75
2110 NASDAQ NATR Fri, Dec 18, 1998 15.69 15.81 15.13 15.75
2109 NASDAQ NATR Thu, Dec 17, 1998 15.13 15.69 14.75 15.63
2108 NASDAQ NATR Wed, Dec 16, 1998 15.63 15.63 14.75 14.81
2107 NASDAQ NATR Tue, Dec 15, 1998 15.88 16.00 15.31 15.31
2106 NASDAQ NATR Mon, Dec 14, 1998 16.13 16.50 15.50 16.25
2105 NASDAQ NATR Fri, Dec 11, 1998 16.63 16.88 16.25 16.50
2104 NASDAQ NATR Thu, Dec 10, 1998 16.69 17.25 16.56 17.00
2103 NASDAQ NATR Wed, Dec 9, 1998 16.75 17.25 16.75 17.25
2102 NASDAQ NATR Tue, Dec 8, 1998 16.38 17.25 16.31 16.69
2101 NASDAQ NATR Mon, Dec 7, 1998 16.88 17.00 16.44 16.81
2100 NASDAQ NATR Fri, Dec 4, 1998 16.00 16.75 16.00 16.44
2099 NASDAQ NATR Thu, Dec 3, 1998 15.50 16.69 15.50 16.25
2098 NASDAQ NATR Wed, Dec 2, 1998 15.25 16.00 15.00 16.00
2097 NASDAQ NATR Tue, Dec 1, 1998 15.31 15.38 14.81 15.25
2096 NASDAQ NATR Mon, Nov 30, 1998 16.31 16.50 15.25 15.63
2095 NASDAQ NATR Fri, Nov 27, 1998 15.38 16.25 15.38 15.88
2094 NASDAQ NATR Wed, Nov 25, 1998 15.63 15.75 15.25 15.50
2093 NASDAQ NATR Tue, Nov 24, 1998 15.56 16.00 15.06 15.50
2092 NASDAQ NATR Mon, Nov 23, 1998 16.38 16.38 16.00 16.00
2091 NASDAQ NATR Fri, Nov 20, 1998 16.25 16.75 16.13 16.25
2090 NASDAQ NATR Thu, Nov 19, 1998 17.00 17.00 15.88 16.75
2089 NASDAQ NATR Wed, Nov 18, 1998 17.13 17.75 17.00 17.00
2088 NASDAQ NATR Tue, Nov 17, 1998 17.38 17.75 17.25 17.38
2087 NASDAQ NATR Mon, Nov 16, 1998 17.00 17.50 16.88 17.50
2086 NASDAQ NATR Fri, Nov 13, 1998 16.50 16.88 16.50 16.63
2085 NASDAQ NATR Thu, Nov 12, 1998 16.63 16.81 16.50 16.63
2084 NASDAQ NATR Wed, Nov 11, 1998 16.38 16.88 16.38 16.81
2083 NASDAQ NATR Tue, Nov 10, 1998 16.50 16.88 16.38 16.69
2082 NASDAQ NATR Mon, Nov 9, 1998 16.06 16.94 15.88 16.69
2081 NASDAQ NATR Fri, Nov 6, 1998 16.50 16.88 15.63 16.06
2080 NASDAQ NATR Thu, Nov 5, 1998 16.81 17.19 16.38 16.63
2079 NASDAQ NATR Wed, Nov 4, 1998 16.00 16.81 16.00 16.75
2078 NASDAQ NATR Tue, Nov 3, 1998 15.75 16.31 15.63 16.00
2077 NASDAQ NATR Mon, Nov 2, 1998 15.75 16.00 15.50 15.81
2076 NASDAQ NATR Fri, Oct 30, 1998 16.00 16.38 15.88 15.88
2075 NASDAQ NATR Thu, Oct 29, 1998 16.38 16.56 16.00 16.00
2074 NASDAQ NATR Wed, Oct 28, 1998 16.50 16.88 16.25 16.44
2073 NASDAQ NATR Tue, Oct 27, 1998 16.75 16.75 16.38 16.75
2072 NASDAQ NATR Mon, Oct 26, 1998 16.63 16.75 16.38 16.50
2071 NASDAQ NATR Fri, Oct 23, 1998 16.75 16.75 16.25 16.38
2070 NASDAQ NATR Thu, Oct 22, 1998 16.75 17.00 16.50 16.50
2069 NASDAQ NATR Wed, Oct 21, 1998 17.00 17.00 16.50 16.63
2068 NASDAQ NATR Tue, Oct 20, 1998 17.00 17.50 16.75 16.88
2067 NASDAQ NATR Mon, Oct 19, 1998 15.00 17.25 15.00 17.00
2066 NASDAQ NATR Fri, Oct 16, 1998 14.38 15.38 14.38 15.31
2065 NASDAQ NATR Thu, Oct 15, 1998 14.25 14.63 13.88 14.00
2064 NASDAQ NATR Wed, Oct 14, 1998 14.50 15.00 14.50 14.63
2063 NASDAQ NATR Tue, Oct 13, 1998 14.25 15.25 14.13 14.75
2062 NASDAQ NATR Mon, Oct 12, 1998 14.50 15.13 14.13 14.25
2061 NASDAQ NATR Fri, Oct 9, 1998 14.25 14.38 13.75 13.75
2060 NASDAQ NATR Thu, Oct 8, 1998 15.00 15.25 13.88 14.25
2059 NASDAQ NATR Wed, Oct 7, 1998 15.25 15.56 15.00 15.19
2058 NASDAQ NATR Tue, Oct 6, 1998 15.38 16.00 15.38 15.88
2057 NASDAQ NATR Mon, Oct 5, 1998 15.25 16.00 15.25 15.75
2056 NASDAQ NATR Fri, Oct 2, 1998 15.25 16.00 15.25 15.63
2055 NASDAQ NATR Thu, Oct 1, 1998 15.50 16.00 15.38 15.88
2054 NASDAQ NATR Wed, Sep 30, 1998 15.50 16.00 15.25 16.00
2053 NASDAQ NATR Tue, Sep 29, 1998 16.19 16.19 15.63 16.13
2052 NASDAQ NATR Mon, Sep 28, 1998 16.13 16.19 15.75 15.88
2051 NASDAQ NATR Fri, Sep 25, 1998 15.69 16.00 15.47 15.50
2050 NASDAQ NATR Thu, Sep 24, 1998 15.50 15.75 15.19 15.63
2049 NASDAQ NATR Wed, Sep 23, 1998 16.06 16.06 15.50 15.63
2048 NASDAQ NATR Tue, Sep 22, 1998 16.25 16.25 15.50 15.94
2047 NASDAQ NATR Mon, Sep 21, 1998 15.38 16.25 15.38 15.75
2046 NASDAQ NATR Fri, Sep 18, 1998 16.00 16.00 15.31 16.00
2045 NASDAQ NATR Thu, Sep 17, 1998 15.25 15.75 15.13 15.63
2044 NASDAQ NATR Wed, Sep 16, 1998 16.00 16.50 15.13 15.63
2043 NASDAQ NATR Tue, Sep 15, 1998 16.63 16.75 16.13 16.50
2042 NASDAQ NATR Mon, Sep 14, 1998 16.38 17.00 16.06 16.50
2041 NASDAQ NATR Fri, Sep 11, 1998 15.50 16.13 14.63 16.13
2040 NASDAQ NATR Thu, Sep 10, 1998 15.25 15.88 15.25 15.56
2039 NASDAQ NATR Wed, Sep 9, 1998 16.50 16.63 15.75 15.94
2038 NASDAQ NATR Tue, Sep 8, 1998 16.75 17.75 16.25 16.88
2037 NASDAQ NATR Fri, Sep 4, 1998 16.00 16.63 16.00 16.25
2036 NASDAQ NATR Thu, Sep 3, 1998 15.88 16.50 15.75 16.31
2035 NASDAQ NATR Wed, Sep 2, 1998 15.75 16.25 15.25 16.00
2034 NASDAQ NATR Tue, Sep 1, 1998 14.13 15.75 13.63 15.75
2033 NASDAQ NATR Mon, Aug 31, 1998 14.75 15.38 14.00 14.13
2032 NASDAQ NATR Fri, Aug 28, 1998 14.63 15.63 14.56 14.56
2031 NASDAQ NATR Thu, Aug 27, 1998 16.00 16.13 14.38 14.75
2030 NASDAQ NATR Wed, Aug 26, 1998 16.75 16.94 16.41 16.50
2029 NASDAQ NATR Tue, Aug 25, 1998 16.75 17.38 16.75 17.00
2028 NASDAQ NATR Mon, Aug 24, 1998 16.00 17.25 16.00 16.88
2027 NASDAQ NATR Fri, Aug 21, 1998 16.75 16.75 15.63 16.13
2026 NASDAQ NATR Thu, Aug 20, 1998 17.63 17.63 16.13 16.13
2025 NASDAQ NATR Wed, Aug 19, 1998 18.50 19.25 17.38 17.44
2024 NASDAQ NATR Tue, Aug 18, 1998 18.25 19.53 18.25 18.88
2023 NASDAQ NATR Mon, Aug 17, 1998 18.38 19.38 18.25 18.38
2022 NASDAQ NATR Fri, Aug 14, 1998 18.81 19.50 18.75 18.75
2021 NASDAQ NATR Thu, Aug 13, 1998 19.19 19.25 18.38 19.25
2020 NASDAQ NATR Wed, Aug 12, 1998 17.50 19.88 17.50 19.75
2019 NASDAQ NATR Tue, Aug 11, 1998 19.44 19.63 17.56 17.75
2018 NASDAQ NATR Mon, Aug 10, 1998 20.25 20.25 19.44 19.75
2017 NASDAQ NATR Fri, Aug 7, 1998 19.75 20.38 19.75 20.13
2016 NASDAQ NATR Thu, Aug 6, 1998 19.75 20.38 19.50 20.13
2015 NASDAQ NATR Wed, Aug 5, 1998 19.88 20.13 19.50 20.13
2014 NASDAQ NATR Tue, Aug 4, 1998 20.50 20.50 19.38 20.06
2013 NASDAQ NATR Mon, Aug 3, 1998 21.00 21.25 20.25 20.25
2012 NASDAQ NATR Fri, Jul 31, 1998 21.25 21.63 20.63 20.75
2011 NASDAQ NATR Thu, Jul 30, 1998 21.25 21.56 21.13 21.25
2010 NASDAQ NATR Wed, Jul 29, 1998 21.25 22.00 21.25 21.69
2009 NASDAQ NATR Tue, Jul 28, 1998 22.00 22.19 21.13 21.50
2008 NASDAQ NATR Mon, Jul 27, 1998 22.38 22.38 22.13 22.19
2007 NASDAQ NATR Fri, Jul 24, 1998 22.56 22.69 22.00 22.25
2006 NASDAQ NATR Thu, Jul 23, 1998 23.25 23.75 22.63 22.75
2005 NASDAQ NATR Wed, Jul 22, 1998 22.13 23.25 22.13 23.25
2004 NASDAQ NATR Tue, Jul 21, 1998 23.88 24.25 22.00 22.13
2003 NASDAQ NATR Mon, Jul 20, 1998 23.50 24.00 23.50 24.00
2002 NASDAQ NATR Fri, Jul 17, 1998 24.00 24.00 23.50 23.50
2001 NASDAQ NATR Thu, Jul 16, 1998 23.38 24.00 23.38 23.94
2000 NASDAQ NATR Wed, Jul 15, 1998 23.81 23.81 23.56 23.56
1999 NASDAQ NATR Tue, Jul 14, 1998 23.44 23.94 23.44 23.94
1998 NASDAQ NATR Mon, Jul 13, 1998 23.44 23.75 23.31 23.50
1997 NASDAQ NATR Fri, Jul 10, 1998 23.63 23.69 23.44 23.56
1996 NASDAQ NATR Thu, Jul 9, 1998 22.88 23.50 22.56 23.38
1995 NASDAQ NATR Wed, Jul 8, 1998 22.25 22.75 22.25 22.56
1994 NASDAQ NATR Tue, Jul 7, 1998 22.25 22.50 22.13 22.31
1993 NASDAQ NATR Mon, Jul 6, 1998 22.13 22.50 22.00 22.38
1992 NASDAQ NATR Thu, Jul 2, 1998 22.31 22.50 22.19 22.19
1991 NASDAQ NATR Wed, Jul 1, 1998 22.38 22.50 22.25 22.31
1990 NASDAQ NATR Tue, Jun 30, 1998 22.38 22.63 22.38 22.56
1989 NASDAQ NATR Mon, Jun 29, 1998 22.38 23.00 22.38 22.38
1988 NASDAQ NATR Fri, Jun 26, 1998 22.31 23.00 22.31 22.81
1987 NASDAQ NATR Thu, Jun 25, 1998 22.38 22.75 22.38 22.44
1986 NASDAQ NATR Wed, Jun 24, 1998 22.63 22.63 22.13 22.63
1985 NASDAQ NATR Tue, Jun 23, 1998 22.50 22.63 22.50 22.56
1984 NASDAQ NATR Mon, Jun 22, 1998 22.25 22.75 22.25 22.56
1983 NASDAQ NATR Fri, Jun 19, 1998 22.19 22.75 22.19 22.50
1982 NASDAQ NATR Thu, Jun 18, 1998 23.00 23.25 22.25 22.44
1981 NASDAQ NATR Wed, Jun 17, 1998 23.13 23.63 23.06 23.06
1980 NASDAQ NATR Tue, Jun 16, 1998 22.75 23.38 22.25 23.38
1979 NASDAQ NATR Mon, Jun 15, 1998 22.63 23.00 22.13 22.69
1978 NASDAQ NATR Fri, Jun 12, 1998 23.50 23.50 23.00 23.25
1977 NASDAQ NATR Thu, Jun 11, 1998 23.38 23.50 23.19 23.50
1976 NASDAQ NATR Wed, Jun 10, 1998 23.50 23.75 23.13 23.44
1975 NASDAQ NATR Tue, Jun 9, 1998 23.50 24.00 23.50 23.75
1974 NASDAQ NATR Mon, Jun 8, 1998 23.44 24.13 23.44 24.00
1973 NASDAQ NATR Fri, Jun 5, 1998 23.19 23.88 23.19 23.75
1972 NASDAQ NATR Thu, Jun 4, 1998 22.88 23.50 22.88 23.50
1971 NASDAQ NATR Wed, Jun 3, 1998 22.63 23.13 22.38 23.00
1970 NASDAQ NATR Tue, Jun 2, 1998 23.00 23.25 22.13 22.50
1969 NASDAQ NATR Mon, Jun 1, 1998 23.25 23.25 22.94 23.00
1968 NASDAQ NATR Fri, May 29, 1998 22.63 23.13 22.63 23.13
1967 NASDAQ NATR Thu, May 28, 1998 21.88 22.75 21.75 22.75
1966 NASDAQ NATR Wed, May 27, 1998 22.22 22.50 21.75 21.88
1965 NASDAQ NATR Tue, May 26, 1998 22.25 22.44 22.09 22.25
1964 NASDAQ NATR Fri, May 22, 1998 23.00 23.00 22.13 22.38
1963 NASDAQ NATR Thu, May 21, 1998 22.38 23.00 22.25 22.94
1962 NASDAQ NATR Wed, May 20, 1998 23.00 23.25 22.38 22.50
1961 NASDAQ NATR Tue, May 19, 1998 22.50 22.94 22.25 22.94
1960 NASDAQ NATR Mon, May 18, 1998 22.88 22.88 22.25 22.25
1959 NASDAQ NATR Fri, May 15, 1998 22.81 23.00 22.81 22.94
1958 NASDAQ NATR Thu, May 14, 1998 22.75 23.00 22.75 22.88
1957 NASDAQ NATR Wed, May 13, 1998 23.50 23.50 22.75 22.88
1956 NASDAQ NATR Tue, May 12, 1998 23.38 23.38 23.00 23.25
1955 NASDAQ NATR Mon, May 11, 1998 23.00 23.75 23.00 23.19
1954 NASDAQ NATR Fri, May 8, 1998 23.25 23.88 23.00 23.00
1953 NASDAQ NATR Thu, May 7, 1998 23.38 23.63 22.75 23.25
1952 NASDAQ NATR Wed, May 6, 1998 23.13 23.88 23.13 23.38
1951 NASDAQ NATR Tue, May 5, 1998 23.38 24.00 23.13 23.13
1950 NASDAQ NATR Mon, May 4, 1998 24.00 24.16 23.63 23.63
1949 NASDAQ NATR Fri, May 1, 1998 24.63 24.75 24.00 24.34
1948 NASDAQ NATR Thu, Apr 30, 1998 23.63 24.50 23.63 24.50
1947 NASDAQ NATR Wed, Apr 29, 1998 23.38 24.00 23.38 24.00
1946 NASDAQ NATR Tue, Apr 28, 1998 23.38 24.00 23.38 23.75
1945 NASDAQ NATR Mon, Apr 27, 1998 23.13 23.75 22.75 23.63
1944 NASDAQ NATR Fri, Apr 24, 1998 24.00 24.38 23.81 23.81
1943 NASDAQ NATR Thu, Apr 23, 1998 24.50 25.00 24.13 24.19
1942 NASDAQ NATR Wed, Apr 22, 1998 26.00 26.00 24.75 24.88
1941 NASDAQ NATR Tue, Apr 21, 1998 23.50 25.88 23.50 25.44
1940 NASDAQ NATR Mon, Apr 20, 1998 23.63 24.00 23.50 23.63
1939 NASDAQ NATR Fri, Apr 17, 1998 23.75 24.38 23.63 23.63
1938 NASDAQ NATR Thu, Apr 16, 1998 23.63 24.50 23.63 24.06
1937 NASDAQ NATR Wed, Apr 15, 1998 24.56 24.75 23.25 24.13
1936 NASDAQ NATR Tue, Apr 14, 1998 24.50 24.88 24.50 24.75
1935 NASDAQ NATR Mon, Apr 13, 1998 24.63 25.13 24.50 24.63
1934 NASDAQ NATR Thu, Apr 9, 1998 25.06 25.13 24.25 25.00
1933 NASDAQ NATR Wed, Apr 8, 1998 25.88 26.13 25.25 25.25
1932 NASDAQ NATR Tue, Apr 7, 1998 26.50 26.75 26.00 26.00
1931 NASDAQ NATR Mon, Apr 6, 1998 27.00 27.25 26.63 26.63
1930 NASDAQ NATR Fri, Apr 3, 1998 27.00 27.25 27.00 27.13
1929 NASDAQ NATR Thu, Apr 2, 1998 27.00 27.38 27.00 27.13
1928 NASDAQ NATR Wed, Apr 1, 1998 26.75 27.25 26.75 27.25
1927 NASDAQ NATR Tue, Mar 31, 1998 25.75 26.88 25.75 26.81
1926 NASDAQ NATR Mon, Mar 30, 1998 25.88 26.00 25.38 25.88
1925 NASDAQ NATR Fri, Mar 27, 1998 26.50 27.00 25.88 26.00
1924 NASDAQ NATR Thu, Mar 26, 1998 26.75 27.38 26.75 26.88
1923 NASDAQ NATR Wed, Mar 25, 1998 27.00 27.63 27.00 27.25
1922 NASDAQ NATR Tue, Mar 24, 1998 26.25 27.50 26.25 27.44
1921 NASDAQ NATR Mon, Mar 23, 1998 27.88 27.88 26.69 26.69
1920 NASDAQ NATR Fri, Mar 20, 1998 27.25 28.19 27.00 27.75
1919 NASDAQ NATR Thu, Mar 19, 1998 26.00 27.13 26.00 27.13
1918 NASDAQ NATR Wed, Mar 18, 1998 26.00 26.50 26.00 26.25
1917 NASDAQ NATR Tue, Mar 17, 1998 26.00 26.50 26.00 26.38
1916 NASDAQ NATR Mon, Mar 16, 1998 25.63 26.25 25.63 26.13
1915 NASDAQ NATR Fri, Mar 13, 1998 25.63 25.88 25.50 25.81
1914 NASDAQ NATR Thu, Mar 12, 1998 25.88 25.94 25.44 25.81
1913 NASDAQ NATR Wed, Mar 11, 1998 25.63 25.88 25.38 25.50
1912 NASDAQ NATR Tue, Mar 10, 1998 25.00 25.75 25.00 25.63
1911 NASDAQ NATR Mon, Mar 9, 1998 25.25 25.75 25.13 25.25
1910 NASDAQ NATR Fri, Mar 6, 1998 25.63 25.78 25.38 25.56
1909 NASDAQ NATR Thu, Mar 5, 1998 25.50 25.88 25.13 25.19
1908 NASDAQ NATR Wed, Mar 4, 1998 25.63 26.13 25.63 26.13
1907 NASDAQ NATR Tue, Mar 3, 1998 25.75 26.25 25.75 26.25
1906 NASDAQ NATR Mon, Mar 2, 1998 25.50 26.00 25.50 26.00
1905 NASDAQ NATR Fri, Feb 27, 1998 25.00 26.00 25.00 25.75
1904 NASDAQ NATR Thu, Feb 26, 1998 24.63 25.25 24.63 25.13
1903 NASDAQ NATR Wed, Feb 25, 1998 24.50 25.00 24.50 24.88
1902 NASDAQ NATR Tue, Feb 24, 1998 24.75 25.00 24.50 24.88
1901 NASDAQ NATR Mon, Feb 23, 1998 24.88 25.38 24.59 24.88
1900 NASDAQ NATR Fri, Feb 20, 1998 24.63 25.50 24.63 25.00
1899 NASDAQ NATR Thu, Feb 19, 1998 24.50 24.88 24.50 24.88
1898 NASDAQ NATR Wed, Feb 18, 1998 24.50 25.13 24.50 24.50
1897 NASDAQ NATR Tue, Feb 17, 1998 24.88 25.13 24.50 24.88
1896 NASDAQ NATR Fri, Feb 13, 1998 25.50 26.00 25.13 25.13
1895 NASDAQ NATR Thu, Feb 12, 1998 24.81 25.63 24.75 25.63
1894 NASDAQ NATR Wed, Feb 11, 1998 25.75 25.75 24.94 25.25
1893 NASDAQ NATR Tue, Feb 10, 1998 23.88 25.69 23.88 25.69
1892 NASDAQ NATR Mon, Feb 9, 1998 23.50 24.13 23.25 24.13
1891 NASDAQ NATR Fri, Feb 6, 1998 24.13 24.63 23.50 23.75
1890 NASDAQ NATR Thu, Feb 5, 1998 24.88 25.00 23.88 24.31
1889 NASDAQ NATR Wed, Feb 4, 1998 25.00 25.25 24.75 24.88
1888 NASDAQ NATR Tue, Feb 3, 1998 27.25 27.38 25.19 25.25
1887 NASDAQ NATR Mon, Feb 2, 1998 27.00 27.69 26.50 27.38
1886 NASDAQ NATR Fri, Jan 30, 1998 27.63 27.75 26.50 26.50
1885 NASDAQ NATR Thu, Jan 29, 1998 27.75 28.00 27.63 27.75
1884 NASDAQ NATR Wed, Jan 28, 1998 27.75 28.25 27.75 27.94
1883 NASDAQ NATR Tue, Jan 27, 1998 28.06 28.06 27.75 27.75
1882 NASDAQ NATR Mon, Jan 26, 1998 27.88 28.13 27.88 28.00
1881 NASDAQ NATR Fri, Jan 23, 1998 27.63 28.00 27.63 27.88
1880 NASDAQ NATR Thu, Jan 22, 1998 28.38 28.38 27.63 28.00
1879 NASDAQ NATR Wed, Jan 21, 1998 28.00 28.50 28.00 28.38
1878 NASDAQ NATR Tue, Jan 20, 1998 27.88 28.63 27.50 28.63
1877 NASDAQ NATR Fri, Jan 16, 1998 26.63 27.88 26.25 27.75
1876 NASDAQ NATR Thu, Jan 15, 1998 26.63 26.75 26.13 26.44
1875 NASDAQ NATR Wed, Jan 14, 1998 25.88 26.63 25.88 26.44
1874 NASDAQ NATR Tue, Jan 13, 1998 25.38 26.38 25.38 26.00
1873 NASDAQ NATR Mon, Jan 12, 1998 26.00 26.00 24.63 25.50
1872 NASDAQ NATR Fri, Jan 9, 1998 26.50 26.63 25.50 26.13
1871 NASDAQ NATR Thu, Jan 8, 1998 27.25 27.50 26.25 26.63
1870 NASDAQ NATR Wed, Jan 7, 1998 27.31 27.75 27.25 27.63
1869 NASDAQ NATR Tue, Jan 6, 1998 27.50 27.81 27.06 27.38
1868 NASDAQ NATR Mon, Jan 5, 1998 26.13 27.75 26.13 27.50
1867 NASDAQ NATR Fri, Jan 2, 1998 25.88 27.13 25.88 25.88
1866 NASDAQ NATR Wed, Dec 31, 1997 25.75 26.75 25.75 26.00
1865 NASDAQ NATR Tue, Dec 30, 1997 25.38 26.38 25.38 25.94
1864 NASDAQ NATR Mon, Dec 29, 1997 24.75 25.50 24.75 25.44
1863 NASDAQ NATR Fri, Dec 26, 1997 24.63 25.13 24.63 24.63
1862 NASDAQ NATR Wed, Dec 24, 1997 25.13 25.50 24.63 24.63
1861 NASDAQ NATR Tue, Dec 23, 1997 24.56 25.63 24.56 25.13
1860 NASDAQ NATR Mon, Dec 22, 1997 23.50 24.75 23.25 24.56
1859 NASDAQ NATR Fri, Dec 19, 1997 21.88 23.38 21.75 23.13
1858 NASDAQ NATR Thu, Dec 18, 1997 22.25 22.41 22.25 22.25
1857 NASDAQ NATR Wed, Dec 17, 1997 22.00 22.50 22.00 22.31
1856 NASDAQ NATR Tue, Dec 16, 1997 21.38 22.19 21.38 22.00
1855 NASDAQ NATR Mon, Dec 15, 1997 21.00 21.50 20.88 21.38
1854 NASDAQ NATR Fri, Dec 12, 1997 21.00 21.38 21.00 21.38
1853 NASDAQ NATR Thu, Dec 11, 1997 21.63 21.63 21.00 21.38
1852 NASDAQ NATR Wed, Dec 10, 1997 21.63 21.88 21.38 21.63
1851 NASDAQ NATR Tue, Dec 9, 1997 21.88 22.00 21.63 22.00
1850 NASDAQ NATR Mon, Dec 8, 1997 21.50 22.13 21.50 21.88
1849 NASDAQ NATR Fri, Dec 5, 1997 21.38 22.00 21.38 22.00
1848 NASDAQ NATR Thu, Dec 4, 1997 22.13 22.13 21.75 21.88
1847 NASDAQ NATR Wed, Dec 3, 1997 21.63 22.06 21.63 22.00
1846 NASDAQ NATR Tue, Dec 2, 1997 21.38 22.00 21.38 22.00
1845 NASDAQ NATR Mon, Dec 1, 1997 21.94 22.13 21.50 21.50
1844 NASDAQ NATR Fri, Nov 28, 1997 22.00 22.13 21.63 21.81
1843 NASDAQ NATR Wed, Nov 26, 1997 21.63 22.13 21.63 21.88
1842 NASDAQ NATR Tue, Nov 25, 1997 22.75 22.75 21.88 22.00
1841 NASDAQ NATR Mon, Nov 24, 1997 22.63 23.00 22.50 22.81
1840 NASDAQ NATR Fri, Nov 21, 1997 22.88 23.13 22.75 22.75
1839 NASDAQ NATR Thu, Nov 20, 1997 22.88 23.19 22.88 22.88
1838 NASDAQ NATR Wed, Nov 19, 1997 22.75 23.06 22.38 22.88
1837 NASDAQ NATR Tue, Nov 18, 1997 22.50 22.81 22.50 22.75
1836 NASDAQ NATR Mon, Nov 17, 1997 22.38 22.75 22.19 22.75
1835 NASDAQ NATR Fri, Nov 14, 1997 21.75 22.50 21.75 22.31
1834 NASDAQ NATR Thu, Nov 13, 1997 22.25 22.50 21.75 21.75
1833 NASDAQ NATR Wed, Nov 12, 1997 22.25 22.88 22.25 22.38
1832 NASDAQ NATR Tue, Nov 11, 1997 22.63 23.25 22.63 23.00
1831 NASDAQ NATR Mon, Nov 10, 1997 23.13 23.50 22.63 23.25
1830 NASDAQ NATR Fri, Nov 7, 1997 23.19 23.38 22.75 23.13
1829 NASDAQ NATR Thu, Nov 6, 1997 23.44 23.75 23.44 23.56
1828 NASDAQ NATR Wed, Nov 5, 1997 23.38 23.56 23.31 23.56
1827 NASDAQ NATR Tue, Nov 4, 1997 23.00 23.63 23.00 23.50
1826 NASDAQ NATR Mon, Nov 3, 1997 23.00 23.38 23.00 23.13
1825 NASDAQ NATR Fri, Oct 31, 1997 23.00 23.25 22.88 23.13
1824 NASDAQ NATR Thu, Oct 30, 1997 22.63 23.13 22.63 23.13
1823 NASDAQ NATR Wed, Oct 29, 1997 23.25 23.31 22.88 23.13
1822 NASDAQ NATR Tue, Oct 28, 1997 22.00 23.13 22.00 22.94
1821 NASDAQ NATR Mon, Oct 27, 1997 23.25 23.50 22.88 23.25
1820 NASDAQ NATR Fri, Oct 24, 1997 23.38 23.88 23.38 23.63
1819 NASDAQ NATR Thu, Oct 23, 1997 23.25 23.75 23.25 23.69
1818 NASDAQ NATR Wed, Oct 22, 1997 24.00 24.13 23.38 23.88
1817 NASDAQ NATR Tue, Oct 21, 1997 24.13 24.63 24.00 24.47
1816 NASDAQ NATR Mon, Oct 20, 1997 24.25 24.75 24.00 24.75
1815 NASDAQ NATR Fri, Oct 17, 1997 24.63 24.88 24.25 24.44
1814 NASDAQ NATR Thu, Oct 16, 1997 23.75 25.00 23.75 24.75
1813 NASDAQ NATR Wed, Oct 15, 1997 24.00 24.25 23.75 24.25
1812 NASDAQ NATR Tue, Oct 14, 1997 24.25 24.38 23.88 24.13
1811 NASDAQ NATR Mon, Oct 13, 1997 23.88 24.25 23.88 24.13
1810 NASDAQ NATR Fri, Oct 10, 1997 23.75 24.25 23.50 24.25
1809 NASDAQ NATR Thu, Oct 9, 1997 23.75 24.00 23.75 23.88
1808 NASDAQ NATR Wed, Oct 8, 1997 23.75 24.25 23.75 23.75
1807 NASDAQ NATR Tue, Oct 7, 1997 24.13 24.38 23.88 23.88
1806 NASDAQ NATR Mon, Oct 6, 1997 24.25 24.50 24.13 24.19
1805 NASDAQ NATR Fri, Oct 3, 1997 23.88 24.69 23.88 24.38
1804 NASDAQ NATR Thu, Oct 2, 1997 23.75 24.13 23.75 23.88
1803 NASDAQ NATR Wed, Oct 1, 1997 23.50 24.00 23.50 24.00
1802 NASDAQ NATR Tue, Sep 30, 1997 23.75 24.00 23.63 23.63
1801 NASDAQ NATR Mon, Sep 29, 1997 23.50 23.75 23.50 23.63
1800 NASDAQ NATR Fri, Sep 26, 1997 23.50 23.75 23.50 23.63
1799 NASDAQ NATR Thu, Sep 25, 1997 23.50 23.75 23.50 23.50
1798 NASDAQ NATR Wed, Sep 24, 1997 23.50 23.75 23.50 23.75
1797 NASDAQ NATR Tue, Sep 23, 1997 23.50 23.75 23.50 23.50
1796 NASDAQ NATR Mon, Sep 22, 1997 23.50 23.75 23.50 23.75
1795 NASDAQ NATR Fri, Sep 19, 1997 23.25 23.75 23.25 23.50
1794 NASDAQ NATR Thu, Sep 18, 1997 23.25 23.75 23.25 23.63
1793 NASDAQ NATR Wed, Sep 17, 1997 23.50 23.75 23.13 23.50
1792 NASDAQ NATR Tue, Sep 16, 1997 23.25 23.50 23.13 23.50
1791 NASDAQ NATR Mon, Sep 15, 1997 23.00 23.38 23.00 23.13
1790 NASDAQ NATR Fri, Sep 12, 1997 22.63 23.00 22.63 22.63
1789 NASDAQ NATR Thu, Sep 11, 1997 22.38 23.00 22.38 22.75
1788 NASDAQ NATR Wed, Sep 10, 1997 22.75 23.00 22.50 22.75
1787 NASDAQ NATR Tue, Sep 9, 1997 23.00 23.38 22.88 23.06
1786 NASDAQ NATR Mon, Sep 8, 1997 22.75 23.31 22.25 23.13
1785 NASDAQ NATR Fri, Sep 5, 1997 22.63 22.63 21.88 22.50
1784 NASDAQ NATR Thu, Sep 4, 1997 21.38 22.88 21.38 22.25
1783 NASDAQ NATR Wed, Sep 3, 1997 21.13 21.75 21.13 21.75
1782 NASDAQ NATR Tue, Sep 2, 1997 20.88 21.44 20.50 21.44
1781 NASDAQ NATR Fri, Aug 29, 1997 20.25 20.88 20.25 20.88
1780 NASDAQ NATR Thu, Aug 28, 1997 20.50 20.50 20.00 20.50
1779 NASDAQ NATR Wed, Aug 27, 1997 19.75 20.50 19.50 20.13
1778 NASDAQ NATR Tue, Aug 26, 1997 19.38 19.75 19.38 19.50
1777 NASDAQ NATR Mon, Aug 25, 1997 19.25 19.69 19.25 19.38
1776 NASDAQ NATR Fri, Aug 22, 1997 19.25 19.50 19.25 19.50
1775 NASDAQ NATR Thu, Aug 21, 1997 19.38 19.75 19.27 19.38
1774 NASDAQ NATR Wed, Aug 20, 1997 19.50 19.88 19.38 19.63
1773 NASDAQ NATR Tue, Aug 19, 1997 19.13 19.63 19.00 19.50
1772 NASDAQ NATR Mon, Aug 18, 1997 19.00 19.50 18.75 19.00
1771 NASDAQ NATR Fri, Aug 15, 1997 19.38 19.63 19.00 19.00
1770 NASDAQ NATR Thu, Aug 14, 1997 19.38 19.63 19.38 19.50
1769 NASDAQ NATR Wed, Aug 13, 1997 19.63 19.63 19.13 19.38
1768 NASDAQ NATR Tue, Aug 12, 1997 19.88 20.00 19.63 19.88
1767 NASDAQ NATR Mon, Aug 11, 1997 19.88 20.00 19.75 19.88
1766 NASDAQ NATR Fri, Aug 8, 1997 20.50 20.81 19.63 19.69
1765 NASDAQ NATR Thu, Aug 7, 1997 20.75 21.00 20.63 20.81
1764 NASDAQ NATR Wed, Aug 6, 1997 20.50 20.88 20.50 20.75
1763 NASDAQ NATR Tue, Aug 5, 1997 20.88 21.00 20.50 20.88
1762 NASDAQ NATR Mon, Aug 4, 1997 20.00 21.13 20.00 21.00
1761 NASDAQ NATR Fri, Aug 1, 1997 20.25 20.50 19.88 20.38
1760 NASDAQ NATR Thu, Jul 31, 1997 21.00 21.00 20.38 20.50
1759 NASDAQ NATR Wed, Jul 30, 1997 20.38 20.88 20.38 20.63
1758 NASDAQ NATR Tue, Jul 29, 1997 20.25 20.50 20.25 20.50
1757 NASDAQ NATR Mon, Jul 28, 1997 20.00 20.50 20.00 20.50
1756 NASDAQ NATR Fri, Jul 25, 1997 20.13 20.75 20.13 20.50
1755 NASDAQ NATR Thu, Jul 24, 1997 20.75 21.00 19.75 20.50
1754 NASDAQ NATR Wed, Jul 23, 1997 21.25 21.63 20.88 20.88
1753 NASDAQ NATR Tue, Jul 22, 1997 21.50 21.63 21.00 21.25
1752 NASDAQ NATR Mon, Jul 21, 1997 19.88 21.50 19.88 21.50
1751 NASDAQ NATR Fri, Jul 18, 1997 20.00 20.25 19.63 20.25
1750 NASDAQ NATR Thu, Jul 17, 1997 19.00 20.75 19.00 19.88
1749 NASDAQ NATR Wed, Jul 16, 1997 19.00 19.50 19.00 19.09
1748 NASDAQ NATR Tue, Jul 15, 1997 19.13 19.63 19.13 19.13
1747 NASDAQ NATR Mon, Jul 14, 1997 20.00 20.13 19.38 19.63
1746 NASDAQ NATR Fri, Jul 11, 1997 19.38 20.00 19.38 19.88
1745 NASDAQ NATR Thu, Jul 10, 1997 19.00 19.50 18.81 19.38
1744 NASDAQ NATR Wed, Jul 9, 1997 18.50 19.00 18.50 19.00
1743 NASDAQ NATR Tue, Jul 8, 1997 17.88 18.63 17.88 18.63
1742 NASDAQ NATR Mon, Jul 7, 1997 17.88 18.13 17.88 17.94
1741 NASDAQ NATR Thu, Jul 3, 1997 17.88 18.00 17.88 17.94
1740 NASDAQ NATR Wed, Jul 2, 1997 18.13 18.13 17.88 18.00
1739 NASDAQ NATR Tue, Jul 1, 1997 18.00 18.25 17.88 18.13
1738 NASDAQ NATR Mon, Jun 30, 1997 17.50 18.13 17.38 18.13
1737 NASDAQ NATR Fri, Jun 27, 1997 17.38 17.75 17.38 17.50
1736 NASDAQ NATR Thu, Jun 26, 1997 17.38 17.69 17.38 17.38
1735 NASDAQ NATR Wed, Jun 25, 1997 17.38 17.69 17.06 17.38
1734 NASDAQ NATR Tue, Jun 24, 1997 17.25 17.38 17.06 17.38
1733 NASDAQ NATR Mon, Jun 23, 1997 17.38 17.38 17.00 17.25
1732 NASDAQ NATR Fri, Jun 20, 1997 17.38 17.38 17.00 17.38
1731 NASDAQ NATR Thu, Jun 19, 1997 17.38 17.63 17.25 17.50
1730 NASDAQ NATR Wed, Jun 18, 1997 17.50 17.63 17.38 17.38
1729 NASDAQ NATR Tue, Jun 17, 1997 17.75 18.00 17.75 17.75
1728 NASDAQ NATR Mon, Jun 16, 1997 17.75 17.88 17.75 17.75
1727 NASDAQ NATR Fri, Jun 13, 1997 17.69 17.88 17.69 17.75
1726 NASDAQ NATR Thu, Jun 12, 1997 17.63 17.88 17.63 17.78
1725 NASDAQ NATR Wed, Jun 11, 1997 17.75 17.88 17.63 17.69
1724 NASDAQ NATR Tue, Jun 10, 1997 17.56 17.88 17.13 17.81
1723 NASDAQ NATR Mon, Jun 9, 1997 18.38 18.38 18.13 18.19
1722 NASDAQ NATR Fri, Jun 6, 1997 18.00 18.31 18.00 18.28
1721 NASDAQ NATR Thu, Jun 5, 1997 17.88 18.06 17.81 18.06
1720 NASDAQ NATR Wed, Jun 4, 1997 17.44 17.94 17.38 17.94
1719 NASDAQ NATR Tue, Jun 3, 1997 17.50 17.50 17.38 17.50
1718 NASDAQ NATR Mon, Jun 2, 1997 16.63 17.38 16.63 17.25
1717 NASDAQ NATR Fri, May 30, 1997 16.63 16.88 16.38 16.88
1716 NASDAQ NATR Thu, May 29, 1997 16.50 16.88 16.50 16.88
1715 NASDAQ NATR Wed, May 28, 1997 16.75 16.75 16.50 16.75
1714 NASDAQ NATR Tue, May 27, 1997 16.75 16.88 16.63 16.63
1713 NASDAQ NATR Fri, May 23, 1997 16.25 16.75 16.25 16.75
1712 NASDAQ NATR Thu, May 22, 1997 16.00 16.50 16.00 16.38
1711 NASDAQ NATR Wed, May 21, 1997 16.63 16.63 16.00 16.25
1710 NASDAQ NATR Tue, May 20, 1997 16.75 17.13 16.25 16.50
1709 NASDAQ NATR Mon, May 19, 1997 15.75 16.63 15.63 16.50
1708 NASDAQ NATR Fri, May 16, 1997 15.50 15.88 15.25 15.63
1707 NASDAQ NATR Thu, May 15, 1997 14.88 16.00 14.75 15.13
1706 NASDAQ NATR Wed, May 14, 1997 14.25 14.63 14.00 14.50
1705 NASDAQ NATR Tue, May 13, 1997 14.25 14.25 14.00 14.00
1704 NASDAQ NATR Mon, May 12, 1997 14.13 14.13 13.88 14.13
1703 NASDAQ NATR Fri, May 9, 1997 14.00 14.13 13.75 13.75
1702 NASDAQ NATR Thu, May 8, 1997 14.25 14.25 13.88 14.00
1701 NASDAQ NATR Wed, May 7, 1997 14.50 14.63 13.75 14.25
1700 NASDAQ NATR Tue, May 6, 1997 14.25 14.75 14.25 14.56
1699 NASDAQ NATR Mon, May 5, 1997 14.13 14.50 14.00 14.50
1698 NASDAQ NATR Fri, May 2, 1997 14.13 14.38 14.00 14.00
1697 NASDAQ NATR Thu, May 1, 1997 13.50 14.38 13.50 14.38
1696 NASDAQ NATR Wed, Apr 30, 1997 14.25 14.25 13.50 13.63
1695 NASDAQ NATR Tue, Apr 29, 1997 14.13 14.38 14.00 14.25
1694 NASDAQ NATR Mon, Apr 28, 1997 14.25 14.50 14.25 14.25
1693 NASDAQ NATR Fri, Apr 25, 1997 14.38 14.38 14.25 14.25
1692 NASDAQ NATR Thu, Apr 24, 1997 14.13 14.50 14.13 14.31
1691 NASDAQ NATR Wed, Apr 23, 1997 14.50 14.50 14.13 14.25
1690 NASDAQ NATR Tue, Apr 22, 1997 14.13 14.38 14.13 14.38
1689 NASDAQ NATR Mon, Apr 21, 1997 14.25 14.50 14.13 14.19
1688 NASDAQ NATR Fri, Apr 18, 1997 14.38 14.63 14.25 14.38
1687 NASDAQ NATR Thu, Apr 17, 1997 15.50 15.50 14.25 14.25
1686 NASDAQ NATR Wed, Apr 16, 1997 15.00 15.50 15.00 15.13
1685 NASDAQ NATR Tue, Apr 15, 1997 14.13 15.13 14.13 14.75
1684 NASDAQ NATR Mon, Apr 14, 1997 14.00 14.50 14.00 14.50
1683 NASDAQ NATR Fri, Apr 11, 1997 15.00 15.00 14.13 14.13
1682 NASDAQ NATR Thu, Apr 10, 1997 15.50 15.50 15.00 15.25
1681 NASDAQ NATR Wed, Apr 9, 1997 15.13 15.88 15.13 15.63
1680 NASDAQ NATR Tue, Apr 8, 1997 15.00 15.38 15.00 15.38
1679 NASDAQ NATR Mon, Apr 7, 1997 15.13 15.13 14.88 15.13
1678 NASDAQ NATR Fri, Apr 4, 1997 14.75 15.13 14.75 14.75
1677 NASDAQ NATR Thu, Apr 3, 1997 14.75 15.13 14.75 15.00
1676 NASDAQ NATR Wed, Apr 2, 1997 15.13 15.38 14.63 15.00
1675 NASDAQ NATR Tue, Apr 1, 1997 14.50 15.38 14.50 15.38
1674 NASDAQ NATR Mon, Mar 31, 1997 15.50 15.63 14.50 14.50
1673 NASDAQ NATR Thu, Mar 27, 1997 16.38 16.38 15.50 15.50
1672 NASDAQ NATR Wed, Mar 26, 1997 16.50 16.75 16.13 16.13
1671 NASDAQ NATR Tue, Mar 25, 1997 16.63 16.88 16.50 16.75
1670 NASDAQ NATR Mon, Mar 24, 1997 16.25 16.88 16.13 16.75
1669 NASDAQ NATR Fri, Mar 21, 1997 16.00 16.50 15.88 16.50
1668 NASDAQ NATR Thu, Mar 20, 1997 15.50 16.00 15.25 16.00
1667 NASDAQ NATR Wed, Mar 19, 1997 15.13 15.63 15.13 15.50
1666 NASDAQ NATR Tue, Mar 18, 1997 14.88 15.50 14.88 15.38
1665 NASDAQ NATR Mon, Mar 17, 1997 14.75 15.25 14.75 15.13
1664 NASDAQ NATR Fri, Mar 14, 1997 15.25 15.25 14.75 15.00
1663 NASDAQ NATR Thu, Mar 13, 1997 15.38 15.38 15.00 15.06
1662 NASDAQ NATR Wed, Mar 12, 1997 15.38 15.50 15.25 15.38
1661 NASDAQ NATR Tue, Mar 11, 1997 15.25 15.50 15.25 15.38
1660 NASDAQ NATR Mon, Mar 10, 1997 15.38 15.50 15.25 15.50
1659 NASDAQ NATR Fri, Mar 7, 1997 15.63 15.75 15.13 15.25
1658 NASDAQ NATR Thu, Mar 6, 1997 14.63 15.00 14.63 15.00
1657 NASDAQ NATR Wed, Mar 5, 1997 14.88 15.00 14.50 14.75
1656 NASDAQ NATR Tue, Mar 4, 1997 15.00 15.13 14.75 14.88
1655 NASDAQ NATR Mon, Mar 3, 1997 15.38 15.38 14.75 15.00
1654 NASDAQ NATR Fri, Feb 28, 1997 14.25 15.38 14.13 15.38
1653 NASDAQ NATR Thu, Feb 27, 1997 14.13 14.50 14.00 14.13
1652 NASDAQ NATR Wed, Feb 26, 1997 14.88 14.88 14.13 14.38
1651 NASDAQ NATR Tue, Feb 25, 1997 15.63 15.88 14.75 15.00
1650 NASDAQ NATR Mon, Feb 24, 1997 15.88 15.88 15.63 15.75
1649 NASDAQ NATR Fri, Feb 21, 1997 16.25 16.25 15.75 15.75
1648 NASDAQ NATR Thu, Feb 20, 1997 16.25 16.25 16.00 16.00
1647 NASDAQ NATR Wed, Feb 19, 1997 16.00 16.38 16.00 16.13
1646 NASDAQ NATR Tue, Feb 18, 1997 16.63 16.88 15.88 16.13
1645 NASDAQ NATR Fri, Feb 14, 1997 17.00 17.00 16.50 16.63
1644 NASDAQ NATR Thu, Feb 13, 1997 17.00 17.00 16.75 16.75
1643 NASDAQ NATR Wed, Feb 12, 1997 17.00 17.13 16.63 16.75
1642 NASDAQ NATR Tue, Feb 11, 1997 16.50 17.00 16.13 17.00
1641 NASDAQ NATR Mon, Feb 10, 1997 16.38 17.00 16.13 16.38
1640 NASDAQ NATR Fri, Feb 7, 1997 16.88 17.13 16.38 16.63
1639 NASDAQ NATR Thu, Feb 6, 1997 17.13 17.13 16.88 17.00
1638 NASDAQ NATR Wed, Feb 5, 1997 16.75 17.13 16.75 17.00
1637 NASDAQ NATR Tue, Feb 4, 1997 17.75 17.75 16.50 17.00
1636 NASDAQ NATR Mon, Feb 3, 1997 17.75 17.88 17.50 17.63
1635 NASDAQ NATR Fri, Jan 31, 1997 17.88 17.88 17.75 17.75
1634 NASDAQ NATR Thu, Jan 30, 1997 18.00 18.13 17.88 17.88
1633 NASDAQ NATR Wed, Jan 29, 1997 18.13 18.38 18.00 18.13
1632 NASDAQ NATR Tue, Jan 28, 1997 17.75 18.38 17.75 18.25
1631 NASDAQ NATR Mon, Jan 27, 1997 18.25 18.25 17.75 17.88
1630 NASDAQ NATR Fri, Jan 24, 1997 18.25 18.38 18.13 18.13
1629 NASDAQ NATR Thu, Jan 23, 1997 18.25 18.38 18.25 18.38
1628 NASDAQ NATR Wed, Jan 22, 1997 18.38 18.38 18.13 18.38
1627 NASDAQ NATR Tue, Jan 21, 1997 18.25 18.38 17.75 18.25
1626 NASDAQ NATR Mon, Jan 20, 1997 17.63 18.13 17.63 18.13
1625 NASDAQ NATR Fri, Jan 17, 1997 17.50 18.38 17.50 17.75
1624 NASDAQ NATR Thu, Jan 16, 1997 18.25 18.25 17.50 17.56
1623 NASDAQ NATR Wed, Jan 15, 1997 18.00 18.25 17.88 18.25
1622 NASDAQ NATR Tue, Jan 14, 1997 18.25 18.75 17.75 17.88
1621 NASDAQ NATR Mon, Jan 13, 1997 18.00 18.50 17.75 17.88
1620 NASDAQ NATR Fri, Jan 10, 1997 17.50 18.75 17.50 18.50
1619 NASDAQ NATR Thu, Jan 9, 1997 17.50 18.25 17.25 17.63
1618 NASDAQ NATR Wed, Jan 8, 1997 17.88 18.50 17.50 17.75
1617 NASDAQ NATR Tue, Jan 7, 1997 18.25 18.63 17.63 18.50
1616 NASDAQ NATR Mon, Jan 6, 1997 18.75 18.75 17.63 18.25
1615 NASDAQ NATR Fri, Jan 3, 1997 17.50 18.75 17.50 18.63
1614 NASDAQ NATR Thu, Jan 2, 1997 18.75 18.75 17.75 18.00
1613 NASDAQ NATR Tue, Dec 31, 1996 18.75 19.13 17.50 18.00
1612 NASDAQ NATR Mon, Dec 30, 1996 19.38 19.50 18.75 18.75
1611 NASDAQ NATR Fri, Dec 27, 1996 19.25 19.75 19.00 19.50
1610 NASDAQ NATR Thu, Dec 26, 1996 19.75 19.75 19.25 19.75
1609 NASDAQ NATR Tue, Dec 24, 1996 18.50 19.63 18.50 19.50
1608 NASDAQ NATR Mon, Dec 23, 1996 19.75 19.75 18.50 18.88
1607 NASDAQ NATR Fri, Dec 20, 1996 19.50 19.75 19.00 19.00
1606 NASDAQ NATR Thu, Dec 19, 1996 19.25 19.75 18.75 19.50
1605 NASDAQ NATR Wed, Dec 18, 1996 19.27 20.00 19.25 19.25
1604 NASDAQ NATR Tue, Dec 17, 1996 19.75 20.00 18.75 19.75
1603 NASDAQ NATR Mon, Dec 16, 1996 19.50 19.75 19.00 19.75
1602 NASDAQ NATR Fri, Dec 13, 1996 19.50 20.50 19.00 19.13
1601 NASDAQ NATR Thu, Dec 12, 1996 20.75 20.75 20.00 20.38
1600 NASDAQ NATR Wed, Dec 11, 1996 20.50 20.75 19.75 20.25
1599 NASDAQ NATR Tue, Dec 10, 1996 20.25 21.25 20.25 21.00
1598 NASDAQ NATR Mon, Dec 9, 1996 19.63 20.75 19.63 20.75
1597 NASDAQ NATR Fri, Dec 6, 1996 19.13 20.50 19.13 20.50
1596 NASDAQ NATR Thu, Dec 5, 1996 19.50 20.75 19.50 20.25
1595 NASDAQ NATR Wed, Dec 4, 1996 19.50 20.38 19.50 20.00
1594 NASDAQ NATR Tue, Dec 3, 1996 20.00 20.38 19.00 20.38
1593 NASDAQ NATR Mon, Dec 2, 1996 20.00 20.00 19.25 19.38
1592 NASDAQ NATR Fri, Nov 29, 1996 19.50 20.63 19.50 20.25
1591 NASDAQ NATR Wed, Nov 27, 1996 21.25 21.75 19.63 20.25
1590 NASDAQ NATR Tue, Nov 26, 1996 21.50 22.00 21.25 21.25
1589 NASDAQ NATR Mon, Nov 25, 1996 21.75 22.25 21.50 21.63
1588 NASDAQ NATR Fri, Nov 22, 1996 21.00 22.25 21.00 21.88
1587 NASDAQ NATR Thu, Nov 21, 1996 21.38 22.25 20.75 21.25
1586 NASDAQ NATR Wed, Nov 20, 1996 20.25 21.50 20.25 21.25
1585 NASDAQ NATR Tue, Nov 19, 1996 18.50 20.75 18.00 20.38
1584 NASDAQ NATR Mon, Nov 18, 1996 19.50 20.00 18.25 18.25
1583 NASDAQ NATR Fri, Nov 15, 1996 20.75 20.75 19.25 19.63
1582 NASDAQ NATR Thu, Nov 14, 1996 20.75 20.75 20.00 20.75
1581 NASDAQ NATR Wed, Nov 13, 1996 21.88 22.25 20.25 20.88
1580 NASDAQ NATR Tue, Nov 12, 1996 21.25 22.75 21.25 22.00
1579 NASDAQ NATR Mon, Nov 11, 1996 21.00 21.94 21.00 21.88
1578 NASDAQ NATR Fri, Nov 8, 1996 20.75 21.25 20.25 21.13
1577 NASDAQ NATR Thu, Nov 7, 1996 20.50 21.25 20.50 20.88
1576 NASDAQ NATR Wed, Nov 6, 1996 21.25 21.75 20.25 21.25
1575 NASDAQ NATR Tue, Nov 5, 1996 21.25 22.13 21.25 21.75
1574 NASDAQ NATR Mon, Nov 4, 1996 22.25 23.00 22.00 22.00
1573 NASDAQ NATR Fri, Nov 1, 1996 22.25 23.25 22.00 22.50
1572 NASDAQ NATR Thu, Oct 31, 1996 20.00 22.25 20.00 22.13
1571 NASDAQ NATR Wed, Oct 30, 1996 20.25 21.00 20.00 20.88
1570 NASDAQ NATR Tue, Oct 29, 1996 20.75 21.25 20.25 20.75
1569 NASDAQ NATR Mon, Oct 28, 1996 21.88 22.50 20.75 21.50
1568 NASDAQ NATR Fri, Oct 25, 1996 22.25 22.88 21.88 22.50
1567 NASDAQ NATR Thu, Oct 24, 1996 22.02 22.88 22.00 22.63
1566 NASDAQ NATR Wed, Oct 23, 1996 21.75 22.50 21.75 22.38
1565 NASDAQ NATR Tue, Oct 22, 1996 22.73 22.73 21.75 22.50
1564 NASDAQ NATR Mon, Oct 21, 1996 21.75 22.75 21.75 22.75
1563 NASDAQ NATR Fri, Oct 18, 1996 22.25 22.63 20.75 22.25
1562 NASDAQ NATR Thu, Oct 17, 1996 23.25 23.75 23.00 23.25
1561 NASDAQ NATR Wed, Oct 16, 1996 24.75 24.75 22.75 23.75
1560 NASDAQ NATR Tue, Oct 15, 1996 23.75 24.50 22.75 24.25
1559 NASDAQ NATR Mon, Oct 14, 1996 22.50 23.50 22.25 23.50
1558 NASDAQ NATR Fri, Oct 11, 1996 22.25 23.00 21.50 22.50
1557 NASDAQ NATR Thu, Oct 10, 1996 21.25 22.25 21.02 22.13
1556 NASDAQ NATR Wed, Oct 9, 1996 20.75 21.63 20.75 21.38
1555 NASDAQ NATR Tue, Oct 8, 1996 20.50 21.63 20.00 21.13
1554 NASDAQ NATR Mon, Oct 7, 1996 19.50 22.00 19.00 21.00
1553 NASDAQ NATR Fri, Oct 4, 1996 19.50 19.50 19.00 19.50
1552 NASDAQ NATR Thu, Oct 3, 1996 20.00 20.00 18.75 19.25
1551 NASDAQ NATR Wed, Oct 2, 1996 18.75 19.25 18.25 19.25
1550 NASDAQ NATR Tue, Oct 1, 1996 17.50 18.00 16.75 18.00
1549 NASDAQ NATR Mon, Sep 30, 1996 17.25 17.50 16.75 17.50
1548 NASDAQ NATR Fri, Sep 27, 1996 17.38 17.38 16.75 17.25
1547 NASDAQ NATR Thu, Sep 26, 1996 17.50 17.50 16.75 17.38
1546 NASDAQ NATR Wed, Sep 25, 1996 17.00 17.13 16.13 16.88
1545 NASDAQ NATR Tue, Sep 24, 1996 17.13 17.13 16.00 16.50
1544 NASDAQ NATR Mon, Sep 23, 1996 16.25 17.13 16.00 16.73
1543 NASDAQ NATR Fri, Sep 20, 1996 17.00 17.50 16.75 16.75
1542 NASDAQ NATR Thu, Sep 19, 1996 17.50 17.75 16.25 16.75
1541 NASDAQ NATR Wed, Sep 18, 1996 18.50 19.00 17.00 17.63
1540 NASDAQ NATR Tue, Sep 17, 1996 20.25 20.50 18.38 19.00
1539 NASDAQ NATR Mon, Sep 16, 1996 22.75 22.75 19.25 19.88
1538 NASDAQ NATR Fri, Sep 13, 1996 20.75 22.50 20.75 22.13
1537 NASDAQ NATR Thu, Sep 12, 1996 20.50 21.75 20.50 21.25
1536 NASDAQ NATR Wed, Sep 11, 1996 20.50 21.50 20.00 21.50
1535 NASDAQ NATR Tue, Sep 10, 1996 20.75 22.00 20.75 21.13
1534 NASDAQ NATR Mon, Sep 9, 1996 21.75 22.25 20.00 20.38
1533 NASDAQ NATR Fri, Sep 6, 1996 22.02 23.00 21.25 22.25
1532 NASDAQ NATR Thu, Sep 5, 1996 23.00 23.00 22.00 22.38
1531 NASDAQ NATR Wed, Sep 4, 1996 22.63 23.00 22.25 22.63
1530 NASDAQ NATR Tue, Sep 3, 1996 22.50 23.00 22.25 22.25
1529 NASDAQ NATR Fri, Aug 30, 1996 23.25 23.25 22.50 22.50
1528 NASDAQ NATR Thu, Aug 29, 1996 23.00 23.75 23.00 23.00
1527 NASDAQ NATR Wed, Aug 28, 1996 23.75 24.00 23.00 23.00
1526 NASDAQ NATR Tue, Aug 27, 1996 23.75 24.25 23.00 23.75
1525 NASDAQ NATR Mon, Aug 26, 1996 23.75 24.25 23.75 23.75
1524 NASDAQ NATR Fri, Aug 23, 1996 24.50 25.25 23.75 23.75
1523 NASDAQ NATR Thu, Aug 22, 1996 24.50 25.50 24.50 24.88
1522 NASDAQ NATR Wed, Aug 21, 1996 24.00 25.50 24.00 24.88
1521 NASDAQ NATR Tue, Aug 20, 1996 24.00 25.75 24.00 25.00
1520 NASDAQ NATR Mon, Aug 19, 1996 23.00 24.00 23.00 23.98
1519 NASDAQ NATR Fri, Aug 16, 1996 23.50 23.50 23.00 23.13
1518 NASDAQ NATR Thu, Aug 15, 1996 23.25 23.50 22.75 22.75
1517 NASDAQ NATR Wed, Aug 14, 1996 21.50 23.25 21.50 22.63
1516 NASDAQ NATR Tue, Aug 13, 1996 21.25 22.00 21.25 22.00
1515 NASDAQ NATR Mon, Aug 12, 1996 21.00 22.00 21.00 21.75
1514 NASDAQ NATR Fri, Aug 9, 1996 21.75 21.75 21.00 21.13
1513 NASDAQ NATR Thu, Aug 8, 1996 20.75 22.25 20.75 21.50
1512 NASDAQ NATR Wed, Aug 7, 1996 20.75 21.75 20.75 21.25
1511 NASDAQ NATR Tue, Aug 6, 1996 21.25 21.75 20.75 21.25
1510 NASDAQ NATR Mon, Aug 5, 1996 22.25 22.25 20.75 21.75
1509 NASDAQ NATR Fri, Aug 2, 1996 23.00 23.00 21.50 21.50
1508 NASDAQ NATR Thu, Aug 1, 1996 22.00 23.00 21.75 22.75
1507 NASDAQ NATR Wed, Jul 31, 1996 22.25 23.13 22.00 22.00
1506 NASDAQ NATR Tue, Jul 30, 1996 22.25 23.25 22.00 22.50
1505 NASDAQ NATR Mon, Jul 29, 1996 22.25 23.25 21.75 23.00
1504 NASDAQ NATR Fri, Jul 26, 1996 21.50 23.00 21.50 22.50
1503 NASDAQ NATR Thu, Jul 25, 1996 21.75 22.75 21.50 21.63
1502 NASDAQ NATR Wed, Jul 24, 1996 20.00 22.25 19.75 22.00
1501 NASDAQ NATR Tue, Jul 23, 1996 22.50 23.25 21.50 21.50
1500 NASDAQ NATR Mon, Jul 22, 1996 23.00 23.50 22.50 23.25
1499 NASDAQ NATR Fri, Jul 19, 1996 23.50 24.00 23.00 24.00
1498 NASDAQ NATR Thu, Jul 18, 1996 24.00 24.00 23.00 24.00
1497 NASDAQ NATR Wed, Jul 17, 1996 20.75 24.50 20.75 24.00
1496 NASDAQ NATR Tue, Jul 16, 1996 20.75 21.75 18.75 21.25
1495 NASDAQ NATR Mon, Jul 15, 1996 21.25 22.00 21.00 21.75
1494 NASDAQ NATR Fri, Jul 12, 1996 21.75 22.25 21.00 21.88
1493 NASDAQ NATR Thu, Jul 11, 1996 22.25 22.25 20.75 21.25
1492 NASDAQ NATR Wed, Jul 10, 1996 23.50 24.25 21.50 22.25
1491 NASDAQ NATR Tue, Jul 9, 1996 25.25 25.50 23.75 24.25
1490 NASDAQ NATR Mon, Jul 8, 1996 24.50 25.00 23.50 24.75
1489 NASDAQ NATR Fri, Jul 5, 1996 24.25 24.75 23.75 24.00
1488 NASDAQ NATR Wed, Jul 3, 1996 24.25 25.50 24.00 25.25
1487 NASDAQ NATR Tue, Jul 2, 1996 25.25 26.25 24.25 25.00
1486 NASDAQ NATR Mon, Jul 1, 1996 26.00 26.50 25.25 26.00
1485 NASDAQ NATR Fri, Jun 28, 1996 25.50 26.25 25.25 25.50
1484 NASDAQ NATR Thu, Jun 27, 1996 22.00 25.25 22.00 24.50
1483 NASDAQ NATR Wed, Jun 26, 1996 22.00 23.00 22.00 22.25
1482 NASDAQ NATR Tue, Jun 25, 1996 23.50 23.75 22.00 22.00
1481 NASDAQ NATR Mon, Jun 24, 1996 23.50 23.50 22.50 23.50
1480 NASDAQ NATR Fri, Jun 21, 1996 22.25 23.75 22.25 23.00
1479 NASDAQ NATR Thu, Jun 20, 1996 24.25 24.25 22.25 23.00
1478 NASDAQ NATR Wed, Jun 19, 1996 24.25 25.25 23.75 24.50
1477 NASDAQ NATR Tue, Jun 18, 1996 25.50 25.75 24.50 25.00
1476 NASDAQ NATR Mon, Jun 17, 1996 25.00 25.75 24.25 25.75
1475 NASDAQ NATR Fri, Jun 14, 1996 25.75 27.00 25.25 25.25
1474 NASDAQ NATR Thu, Jun 13, 1996 27.25 27.25 25.00 26.25
1473 NASDAQ NATR Wed, Jun 12, 1996 28.00 28.00 26.50 26.75
1472 NASDAQ NATR Tue, Jun 11, 1996 27.25 28.25 27.00 27.63
1471 NASDAQ NATR Mon, Jun 10, 1996 26.75 28.00 26.50 27.25
1470 NASDAQ NATR Fri, Jun 7, 1996 26.25 27.50 25.50 26.50
1469 NASDAQ NATR Thu, Jun 6, 1996 27.50 27.75 27.00 27.50
1468 NASDAQ NATR Wed, Jun 5, 1996 27.50 28.50 27.50 27.75
1467 NASDAQ NATR Tue, Jun 4, 1996 28.00 29.00 27.50 27.75
1466 NASDAQ NATR Mon, Jun 3, 1996 28.25 28.25 26.25 27.75
1465 NASDAQ NATR Fri, May 31, 1996 30.50 30.50 27.75 28.25
1464 NASDAQ NATR Thu, May 30, 1996 28.00 30.50 28.00 30.13
1463 NASDAQ NATR Wed, May 29, 1996 26.75 28.75 26.25 28.25
1462 NASDAQ NATR Tue, May 28, 1996 27.50 28.75 26.50 28.00
1461 NASDAQ NATR Fri, May 24, 1996 25.75 27.50 24.00 27.50
1460 NASDAQ NATR Thu, May 23, 1996 27.25 27.75 25.00 25.25
1459 NASDAQ NATR Wed, May 22, 1996 28.25 28.25 27.25 27.88
1458 NASDAQ NATR Tue, May 21, 1996 27.50 28.25 27.50 28.25
1457 NASDAQ NATR Mon, May 20, 1996 28.25 28.25 27.50 28.25
1456 NASDAQ NATR Fri, May 17, 1996 28.50 28.50 27.50 28.25
1455 NASDAQ NATR Thu, May 16, 1996 27.75 28.50 27.25 28.25
1454 NASDAQ NATR Wed, May 15, 1996 27.00 29.00 26.25 28.00
1453 NASDAQ NATR Tue, May 14, 1996 26.00 26.75 25.50 26.00
1452 NASDAQ NATR Mon, May 13, 1996 25.50 27.00 25.00 26.13
1451 NASDAQ NATR Fri, May 10, 1996 24.75 25.50 24.50 25.50
1450 NASDAQ NATR Thu, May 9, 1996 23.75 25.25 23.75 24.50
1449 NASDAQ NATR Wed, May 8, 1996 24.25 24.75 23.75 24.25
1448 NASDAQ NATR Tue, May 7, 1996 24.50 25.25 24.25 24.50
1447 NASDAQ NATR Mon, May 6, 1996 25.25 25.25 24.50 25.00
1446 NASDAQ NATR Fri, May 3, 1996 24.25 26.00 24.25 24.50
1445 NASDAQ NATR Thu, May 2, 1996 24.75 25.50 24.50 24.50
1444 NASDAQ NATR Wed, May 1, 1996 24.50 25.50 24.50 25.25
1443 NASDAQ NATR Tue, Apr 30, 1996 25.00 25.50 24.00 25.00
1442 NASDAQ NATR Mon, Apr 29, 1996 24.50 26.00 24.50 25.38
1441 NASDAQ NATR Fri, Apr 26, 1996 24.50 26.00 23.75 25.00
1440 NASDAQ NATR Thu, Apr 25, 1996 24.50 24.50 23.75 24.50
1439 NASDAQ NATR Wed, Apr 24, 1996 24.50 25.25 23.75 24.25
1438 NASDAQ NATR Tue, Apr 23, 1996 25.50 25.50 24.50 24.88
1437 NASDAQ NATR Mon, Apr 22, 1996 25.00 25.75 25.00 25.00
1436 NASDAQ NATR Fri, Apr 19, 1996 25.75 25.75 25.00 25.00
1435 NASDAQ NATR Thu, Apr 18, 1996 24.75 26.00 24.50 25.75
1434 NASDAQ NATR Wed, Apr 17, 1996 26.50 26.50 25.25 25.63
1433 NASDAQ NATR Tue, Apr 16, 1996 27.00 27.50 25.94 26.00
1432 NASDAQ NATR Mon, Apr 15, 1996 27.98 30.00 27.25 27.88
1431 NASDAQ NATR Fri, Apr 12, 1996 26.50 28.00 26.00 27.25
1430 NASDAQ NATR Thu, Apr 11, 1996 26.00 26.75 25.75 26.25
1429 NASDAQ NATR Wed, Apr 10, 1996 24.25 27.25 24.25 26.00
1428 NASDAQ NATR Tue, Apr 9, 1996 24.50 25.25 24.50 25.00
1427 NASDAQ NATR Mon, Apr 8, 1996 26.75 26.75 24.00 24.50
1426 NASDAQ NATR Thu, Apr 4, 1996 26.00 27.00 26.00 26.50
1425 NASDAQ NATR Wed, Apr 3, 1996 26.25 26.75 25.75 26.00
1424 NASDAQ NATR Tue, Apr 2, 1996 24.75 26.25 24.75 26.25
1423 NASDAQ NATR Mon, Apr 1, 1996 25.50 26.00 24.75 25.25
1422 NASDAQ NATR Fri, Mar 29, 1996 26.25 26.50 24.25 25.75
1421 NASDAQ NATR Thu, Mar 28, 1996 25.25 26.25 24.50 26.00
1420 NASDAQ NATR Wed, Mar 27, 1996 24.50 25.25 24.25 24.50
1419 NASDAQ NATR Tue, Mar 26, 1996 24.50 25.50 23.75 24.75
1418 NASDAQ NATR Mon, Mar 25, 1996 23.50 24.50 22.75 24.25
1417 NASDAQ NATR Fri, Mar 22, 1996 23.00 23.67 22.83 23.42
1416 NASDAQ NATR Thu, Mar 21, 1996 22.67 23.00 22.33 22.83
1415 NASDAQ NATR Wed, Mar 20, 1996 23.17 23.33 22.67 22.67
1414 NASDAQ NATR Tue, Mar 19, 1996 23.33 23.50 22.00 23.33
1413 NASDAQ NATR Mon, Mar 18, 1996 20.17 22.83 20.17 22.83
1412 NASDAQ NATR Fri, Mar 15, 1996 20.67 21.00 20.17 20.17
1411 NASDAQ NATR Thu, Mar 14, 1996 20.00 20.83 19.50 20.50
1410 NASDAQ NATR Wed, Mar 13, 1996 19.50 20.00 19.50 19.50
1409 NASDAQ NATR Tue, Mar 12, 1996 20.17 20.17 19.50 19.50
1408 NASDAQ NATR Mon, Mar 11, 1996 20.17 20.33 19.67 19.83
1407 NASDAQ NATR Fri, Mar 8, 1996 20.50 20.50 19.83 19.83
1406 NASDAQ NATR Thu, Mar 7, 1996 20.83 20.83 20.33 20.58
1405 NASDAQ NATR Wed, Mar 6, 1996 20.83 21.33 20.50 20.50
1404 NASDAQ NATR Tue, Mar 5, 1996 20.33 21.00 20.33 21.00
1403 NASDAQ NATR Mon, Mar 4, 1996 21.00 21.00 20.50 21.00
1402 NASDAQ NATR Fri, Mar 1, 1996 20.67 21.17 20.33 21.00
1401 NASDAQ NATR Thu, Feb 29, 1996 20.00 20.67 19.83 20.67
1400 NASDAQ NATR Wed, Feb 28, 1996 20.83 21.17 20.00 20.00
1399 NASDAQ NATR Tue, Feb 27, 1996 18.83 20.83 18.68 20.17
1398 NASDAQ NATR Mon, Feb 26, 1996 19.00 19.33 18.67 19.17
1397 NASDAQ NATR Fri, Feb 23, 1996 20.33 20.33 19.33 19.50
1396 NASDAQ NATR Thu, Feb 22, 1996 20.17 20.17 19.83 20.17
1395 NASDAQ NATR Wed, Feb 21, 1996 19.67 20.33 19.67 20.17
1394 NASDAQ NATR Tue, Feb 20, 1996 20.25 20.25 19.50 19.91
1393 NASDAQ NATR Fri, Feb 16, 1996 20.17 20.67 20.17 20.29
1392 NASDAQ NATR Thu, Feb 15, 1996 20.17 20.67 20.17 20.67
1391 NASDAQ NATR Wed, Feb 14, 1996 20.67 20.83 20.33 20.58
1390 NASDAQ NATR Tue, Feb 13, 1996 20.67 20.67 19.67 20.00
1389 NASDAQ NATR Mon, Feb 12, 1996 20.83 21.33 20.17 20.33
1388 NASDAQ NATR Fri, Feb 9, 1996 19.83 20.67 19.83 20.17
1387 NASDAQ NATR Thu, Feb 8, 1996 20.67 20.67 19.67 19.67
1386 NASDAQ NATR Wed, Feb 7, 1996 21.17 21.17 20.33 20.50
1385 NASDAQ NATR Tue, Feb 6, 1996 20.67 21.33 20.17 21.17
1384 NASDAQ NATR Mon, Feb 5, 1996 20.17 20.17 19.67 20.00
1383 NASDAQ NATR Fri, Feb 2, 1996 20.17 20.67 19.83 20.17
1382 NASDAQ NATR Thu, Feb 1, 1996 21.17 21.17 20.17 20.67
1381 NASDAQ NATR Wed, Jan 31, 1996 19.83 21.33 19.83 21.33
1380 NASDAQ NATR Tue, Jan 30, 1996 20.33 20.50 19.67 20.08
1379 NASDAQ NATR Mon, Jan 29, 1996 20.67 20.83 19.83 20.33
1378 NASDAQ NATR Fri, Jan 26, 1996 18.83 19.33 18.83 19.17
1377 NASDAQ NATR Thu, Jan 25, 1996 19.00 19.33 18.50 19.08
1376 NASDAQ NATR Wed, Jan 24, 1996 19.83 19.83 18.50 18.92
1375 NASDAQ NATR Tue, Jan 23, 1996 20.17 20.50 19.33 19.83
1374 NASDAQ NATR Mon, Jan 22, 1996 18.08 20.17 18.08 19.67
1373 NASDAQ NATR Fri, Jan 19, 1996 18.08 18.08 17.67 17.67
1372 NASDAQ NATR Thu, Jan 18, 1996 18.00 18.75 17.67 17.88
1371 NASDAQ NATR Wed, Jan 17, 1996 18.17 18.67 17.00 17.83
1370 NASDAQ NATR Tue, Jan 16, 1996 18.50 19.67 17.83 18.17
1369 NASDAQ NATR Mon, Jan 15, 1996 16.58 18.67 16.50 18.67
1368 NASDAQ NATR Fri, Jan 12, 1996 16.00 16.83 15.67 16.63
1367 NASDAQ NATR Thu, Jan 11, 1996 15.50 16.17 15.33 16.17
1366 NASDAQ NATR Wed, Jan 10, 1996 15.33 15.83 15.17 15.67
1365 NASDAQ NATR Tue, Jan 9, 1996 16.17 16.33 15.67 15.67
1364 NASDAQ NATR Mon, Jan 8, 1996 16.17 16.67 16.17 16.17
1363 NASDAQ NATR Fri, Jan 5, 1996 15.67 16.67 15.33 16.67
1362 NASDAQ NATR Thu, Jan 4, 1996 16.33 16.33 15.50 16.00
1361 NASDAQ NATR Wed, Jan 3, 1996 16.50 16.83 16.17 16.67
1360 NASDAQ NATR Tue, Jan 2, 1996 16.33 16.83 15.83 16.83
1359 NASDAQ NATR Fri, Dec 29, 1995 16.17 17.17 16.17 16.83
1358 NASDAQ NATR Thu, Dec 28, 1995 16.17 16.67 15.83 16.67
1357 NASDAQ NATR Wed, Dec 27, 1995 15.33 16.50 15.33 16.33
1356 NASDAQ NATR Tue, Dec 26, 1995 15.33 15.33 14.83 15.33
1355 NASDAQ NATR Fri, Dec 22, 1995 15.83 15.83 14.83 14.83
1354 NASDAQ NATR Thu, Dec 21, 1995 15.51 15.83 15.50 15.75
1353 NASDAQ NATR Wed, Dec 20, 1995 15.67 15.83 15.50 15.67
1352 NASDAQ NATR Tue, Dec 19, 1995 15.67 15.67 15.50 15.67
1351 NASDAQ NATR Mon, Dec 18, 1995 16.00 16.17 15.50 15.67
1350 NASDAQ NATR Fri, Dec 15, 1995 16.33 16.83 16.17 16.33
1349 NASDAQ NATR Thu, Dec 14, 1995 16.67 17.00 16.00 16.83
1348 NASDAQ NATR Wed, Dec 13, 1995 16.33 17.17 16.33 16.67
1347 NASDAQ NATR Tue, Dec 12, 1995 17.00 17.17 16.50 16.83
1346 NASDAQ NATR Mon, Dec 11, 1995 16.00 16.83 15.50 16.83
1345 NASDAQ NATR Fri, Dec 8, 1995 15.50 15.92 15.50 15.75
1344 NASDAQ NATR Thu, Dec 7, 1995 15.67 15.83 15.33 15.67
1343 NASDAQ NATR Wed, Dec 6, 1995 15.33 15.67 15.00 15.50
1342 NASDAQ NATR Tue, Dec 5, 1995 15.33 15.33 15.00 15.33
1341 NASDAQ NATR Mon, Dec 4, 1995 15.17 15.50 14.83 15.33
1340 NASDAQ NATR Fri, Dec 1, 1995 15.00 15.17 14.67 15.17
1339 NASDAQ NATR Thu, Nov 30, 1995 15.33 15.33 14.67 15.00
1338 NASDAQ NATR Wed, Nov 29, 1995 15.33 15.33 15.00 15.08
1337 NASDAQ NATR Tue, Nov 28, 1995 15.67 16.00 15.17 15.17
1336 NASDAQ NATR Mon, Nov 27, 1995 16.17 16.17 15.83 15.92
1335 NASDAQ NATR Fri, Nov 24, 1995 15.83 16.17 15.83 15.83
1334 NASDAQ NATR Wed, Nov 22, 1995 16.17 16.33 15.67 16.00
1333 NASDAQ NATR Tue, Nov 21, 1995 15.83 16.33 15.67 15.92
1332 NASDAQ NATR Mon, Nov 20, 1995 16.00 16.33 16.00 16.33
1331 NASDAQ NATR Fri, Nov 17, 1995 16.42 16.42 16.17 16.42
1330 NASDAQ NATR Thu, Nov 16, 1995 16.33 16.67 16.25 16.67
1329 NASDAQ NATR Wed, Nov 15, 1995 16.50 16.83 16.17 16.50
1328 NASDAQ NATR Tue, Nov 14, 1995 16.83 16.83 16.33 16.50
1327 NASDAQ NATR Mon, Nov 13, 1995 16.00 16.83 16.00 16.83
1326 NASDAQ NATR Fri, Nov 10, 1995 16.83 16.83 16.17 16.50
1325 NASDAQ NATR Thu, Nov 9, 1995 16.33 16.83 16.33 16.83
1324 NASDAQ NATR Wed, Nov 8, 1995 16.00 16.17 15.67 16.17
1323 NASDAQ NATR Tue, Nov 7, 1995 15.50 16.00 15.50 16.00
1322 NASDAQ NATR Mon, Nov 6, 1995 15.67 15.67 15.33 15.50
1321 NASDAQ NATR Fri, Nov 3, 1995 15.67 16.17 15.17 15.83
1320 NASDAQ NATR Thu, Nov 2, 1995 15.50 15.67 15.17 15.67
1319 NASDAQ NATR Wed, Nov 1, 1995 15.83 15.83 15.33 15.67
1318 NASDAQ NATR Tue, Oct 31, 1995 17.00 17.00 16.17 16.50
1317 NASDAQ NATR Mon, Oct 30, 1995 16.67 17.17 16.50 16.58
1316 NASDAQ NATR Fri, Oct 27, 1995 16.67 17.17 16.67 17.00
1315 NASDAQ NATR Thu, Oct 26, 1995 16.67 17.17 16.33 16.58
1314 NASDAQ NATR Wed, Oct 25, 1995 17.17 18.00 16.83 16.83
1313 NASDAQ NATR Tue, Oct 24, 1995 16.50 17.50 16.50 17.17
1312 NASDAQ NATR Mon, Oct 23, 1995 17.33 17.33 16.50 16.67
1311 NASDAQ NATR Fri, Oct 20, 1995 17.58 18.00 17.50 17.58
1310 NASDAQ NATR Thu, Oct 19, 1995 17.17 18.67 17.17 18.00
1309 NASDAQ NATR Wed, Oct 18, 1995 16.67 17.83 16.17 17.67
1308 NASDAQ NATR Tue, Oct 17, 1995 16.00 16.67 16.00 16.67
1307 NASDAQ NATR Mon, Oct 16, 1995 15.67 16.33 15.67 16.00
1306 NASDAQ NATR Fri, Oct 13, 1995 16.00 16.17 15.67 15.83
1305 NASDAQ NATR Thu, Oct 12, 1995 15.50 16.00 15.17 16.00
1304 NASDAQ NATR Wed, Oct 11, 1995 15.00 15.50 15.00 15.50
1303 NASDAQ NATR Tue, Oct 10, 1995 14.00 15.33 14.00 15.25
1302 NASDAQ NATR Mon, Oct 9, 1995 14.33 14.50 14.17 14.17
1301 NASDAQ NATR Fri, Oct 6, 1995 14.33 14.83 14.33 14.33
1300 NASDAQ NATR Thu, Oct 5, 1995 14.33 14.83 14.33 14.67
1299 NASDAQ NATR Wed, Oct 4, 1995 14.67 14.83 14.33 14.83
1298 NASDAQ NATR Tue, Oct 3, 1995 14.67 15.00 14.67 15.00
1297 NASDAQ NATR Mon, Oct 2, 1995 15.00 15.00 14.67 15.00
1296 NASDAQ NATR Fri, Sep 29, 1995 14.83 15.33 14.33 15.00
1295 NASDAQ NATR Thu, Sep 28, 1995 13.83 14.83 13.83 14.83
1294 NASDAQ NATR Wed, Sep 27, 1995 14.00 14.50 13.83 14.17
1293 NASDAQ NATR Tue, Sep 26, 1995 14.50 15.00 14.17 14.58
1292 NASDAQ NATR Mon, Sep 25, 1995 15.50 15.50 14.67 15.00
1291 NASDAQ NATR Fri, Sep 22, 1995 16.17 16.17 15.33 15.33
1290 NASDAQ NATR Thu, Sep 21, 1995 16.67 16.67 15.67 16.17
1289 NASDAQ NATR Wed, Sep 20, 1995 16.67 16.75 16.17 16.67
1288 NASDAQ NATR Tue, Sep 19, 1995 17.00 17.00 15.83 16.50
1287 NASDAQ NATR Mon, Sep 18, 1995 18.00 18.00 17.00 17.17
1286 NASDAQ NATR Fri, Sep 15, 1995 17.17 18.00 16.67 18.00
1285 NASDAQ NATR Thu, Sep 14, 1995 16.50 17.00 16.00 17.00
1284 NASDAQ NATR Wed, Sep 13, 1995 16.00 16.50 15.67 16.00
1283 NASDAQ NATR Tue, Sep 12, 1995 16.50 16.50 15.67 15.67
1282 NASDAQ NATR Mon, Sep 11, 1995 16.50 16.50 16.00 16.50
1281 NASDAQ NATR Fri, Sep 8, 1995 16.00 16.50 16.00 16.00
1280 NASDAQ NATR Thu, Sep 7, 1995 16.00 16.50 16.00 16.08
1279 NASDAQ NATR Wed, Sep 6, 1995 15.83 16.33 15.33 16.25
1278 NASDAQ NATR Tue, Sep 5, 1995 15.50 15.99 15.33 15.83
1277 NASDAQ NATR Fri, Sep 1, 1995 15.67 15.83 15.17 15.67
1276 NASDAQ NATR Thu, Aug 31, 1995 15.17 15.67 15.17 15.67
1275 NASDAQ NATR Wed, Aug 30, 1995 15.50 15.50 15.17 15.42
1274 NASDAQ NATR Tue, Aug 29, 1995 16.00 16.00 15.17 15.17
1273 NASDAQ NATR Mon, Aug 28, 1995 15.00 16.00 14.83 15.67
1272 NASDAQ NATR Fri, Aug 25, 1995 14.00 15.00 14.00 15.00
1271 NASDAQ NATR Thu, Aug 24, 1995 14.00 14.33 14.00 14.08
1270 NASDAQ NATR Wed, Aug 23, 1995 14.50 14.50 14.00 14.33
1269 NASDAQ NATR Tue, Aug 22, 1995 14.25 14.33 14.00 14.00
1268 NASDAQ NATR Mon, Aug 21, 1995 14.83 14.83 14.17 14.42
1267 NASDAQ NATR Fri, Aug 18, 1995 14.50 14.83 14.33 14.33
1266 NASDAQ NATR Thu, Aug 17, 1995 15.00 15.33 14.63 14.63
1265 NASDAQ NATR Wed, Aug 16, 1995 15.50 15.50 15.00 15.00
1264 NASDAQ NATR Tue, Aug 15, 1995 15.00 15.33 15.00 15.25
1263 NASDAQ NATR Mon, Aug 14, 1995 15.33 15.33 15.00 15.08
1262 NASDAQ NATR Fri, Aug 11, 1995 15.00 15.33 15.00 15.33
1261 NASDAQ NATR Thu, Aug 10, 1995 15.00 15.17 14.50 15.08
1260 NASDAQ NATR Wed, Aug 9, 1995 14.67 14.83 14.33 14.33
1259 NASDAQ NATR Tue, Aug 8, 1995 14.83 14.83 14.17 14.67
1258 NASDAQ NATR Mon, Aug 7, 1995 14.83 15.67 14.33 14.33
1257 NASDAQ NATR Fri, Aug 4, 1995 14.17 15.33 13.83 15.17
1256 NASDAQ NATR Thu, Aug 3, 1995 13.33 14.17 12.83 14.17
1255 NASDAQ NATR Wed, Aug 2, 1995 13.33 13.50 13.00 13.33
1254 NASDAQ NATR Tue, Aug 1, 1995 12.50 13.08 12.00 12.83
1253 NASDAQ NATR Mon, Jul 31, 1995 12.33 12.50 12.00 12.50
1252 NASDAQ NATR Fri, Jul 28, 1995 11.83 12.33 11.83 12.33
1251 NASDAQ NATR Thu, Jul 27, 1995 12.33 12.33 11.83 12.33
1250 NASDAQ NATR Wed, Jul 26, 1995 11.83 12.33 11.83 12.33
1249 NASDAQ NATR Tue, Jul 25, 1995 12.50 12.50 11.83 12.17
1248 NASDAQ NATR Mon, Jul 24, 1995 12.17 12.50 12.00 12.00
1247 NASDAQ NATR Fri, Jul 21, 1995 12.33 12.67 12.17 12.50
1246 NASDAQ NATR Thu, Jul 20, 1995 12.50 12.67 12.17 12.33
1245 NASDAQ NATR Wed, Jul 19, 1995 12.17 12.50 12.17 12.17
1244 NASDAQ NATR Tue, Jul 18, 1995 11.33 12.33 11.33 12.33
1243 NASDAQ NATR Mon, Jul 17, 1995 11.33 11.67 11.33 11.67
1242 NASDAQ NATR Fri, Jul 14, 1995 11.17 11.67 11.17 11.33
1241 NASDAQ NATR Thu, Jul 13, 1995 11.00 11.33 11.00 11.33
1240 NASDAQ NATR Wed, Jul 12, 1995 10.67 11.33 10.17 11.00
1239 NASDAQ NATR Tue, Jul 11, 1995 10.17 10.83 10.17 10.33
1238 NASDAQ NATR Mon, Jul 10, 1995 10.67 10.67 10.17 10.67
1237 NASDAQ NATR Fri, Jul 7, 1995 10.83 10.83 10.33 10.83
1236 NASDAQ NATR Thu, Jul 6, 1995 10.83 10.83 10.17 10.33
1235 NASDAQ NATR Wed, Jul 5, 1995 10.17 10.67 10.17 10.67
1234 NASDAQ NATR Mon, Jul 3, 1995 10.67 10.67 10.17 10.17
1233 NASDAQ NATR Fri, Jun 30, 1995 10.33 10.50 10.00 10.50
1232 NASDAQ NATR Thu, Jun 29, 1995 10.17 10.33 9.83 10.33
1231 NASDAQ NATR Wed, Jun 28, 1995 10.17 10.17 9.83 10.17
1230 NASDAQ NATR Tue, Jun 27, 1995 10.17 10.17 9.83 9.83
1229 NASDAQ NATR Mon, Jun 26, 1995 9.83 10.17 9.83 10.08
1228 NASDAQ NATR Fri, Jun 23, 1995 9.67 10.17 9.67 10.17
1227 NASDAQ NATR Thu, Jun 22, 1995 9.50 10.00 9.50 9.83
1226 NASDAQ NATR Wed, Jun 21, 1995 9.50 10.00 9.50 9.67
1225 NASDAQ NATR Tue, Jun 20, 1995 9.50 10.00 9.50 10.00
1224 NASDAQ NATR Mon, Jun 19, 1995 10.00 10.00 9.50 10.00
1223 NASDAQ NATR Fri, Jun 16, 1995 10.00 10.00 9.33 9.67
1222 NASDAQ NATR Thu, Jun 15, 1995 9.33 10.00 9.33 9.33
1221 NASDAQ NATR Wed, Jun 14, 1995 10.00 10.00 9.50 9.50
1220 NASDAQ NATR Tue, Jun 13, 1995 9.00 9.75 9.00 9.67
1219 NASDAQ NATR Mon, Jun 12, 1995 9.00 9.33 9.00 9.33
1218 NASDAQ NATR Fri, Jun 9, 1995 9.33 9.33 9.00 9.08
1217 NASDAQ NATR Thu, Jun 8, 1995 9.33 9.33 9.00 9.00
1216 NASDAQ NATR Wed, Jun 7, 1995 9.00 9.33 9.00 9.33
1215 NASDAQ NATR Tue, Jun 6, 1995 9.33 9.33 9.00 9.33
1214 NASDAQ NATR Mon, Jun 5, 1995 9.17 9.67 9.00 9.33
1213 NASDAQ NATR Fri, Jun 2, 1995 9.67 9.67 9.17 9.42
1212 NASDAQ NATR Thu, Jun 1, 1995 9.17 9.65 9.17 9.17
1211 NASDAQ NATR Wed, May 31, 1995 9.67 9.67 9.17 9.42
1210 NASDAQ NATR Tue, May 30, 1995 9.17 9.67 9.17 9.42
1209 NASDAQ NATR Fri, May 26, 1995 9.00 9.67 9.00 9.42
1208 NASDAQ NATR Thu, May 25, 1995 9.00 9.33 9.00 9.00
1207 NASDAQ NATR Wed, May 24, 1995 9.00 9.33 9.00 9.00
1206 NASDAQ NATR Tue, May 23, 1995 9.17 9.17 8.83 9.17
1205 NASDAQ NATR Mon, May 22, 1995 8.83 9.17 8.50 9.08
1204 NASDAQ NATR Fri, May 19, 1995 8.50 8.83 8.50 8.67
1203 NASDAQ NATR Thu, May 18, 1995 8.83 8.83 8.50 8.67
1202 NASDAQ NATR Wed, May 17, 1995 8.33 8.83 8.33 8.58
1201 NASDAQ NATR Tue, May 16, 1995 8.83 8.83 8.33 8.33
1200 NASDAQ NATR Mon, May 15, 1995 8.33 8.83 8.33 8.83
1199 NASDAQ NATR Fri, May 12, 1995 8.33 8.83 8.33 8.67
1198 NASDAQ NATR Thu, May 11, 1995 8.83 8.83 8.33 8.33
1197 NASDAQ NATR Wed, May 10, 1995 8.33 8.83 8.33 8.83
1196 NASDAQ NATR Tue, May 9, 1995 8.33 8.67 8.33 8.33
1195 NASDAQ NATR Mon, May 8, 1995 8.67 8.67 8.33 8.67
1194 NASDAQ NATR Fri, May 5, 1995 8.67 8.67 8.33 8.50
1193 NASDAQ NATR Thu, May 4, 1995 8.83 8.83 8.33 8.67
1192 NASDAQ NATR Wed, May 3, 1995 8.67 8.83 8.33 8.83
1191 NASDAQ NATR Tue, May 2, 1995 8.67 8.67 8.33 8.67
1190 NASDAQ NATR Mon, May 1, 1995 8.83 8.83 8.33 8.58
1189 NASDAQ NATR Fri, Apr 28, 1995 8.42 8.67 8.25 8.67
1188 NASDAQ NATR Thu, Apr 27, 1995 8.17 8.33 8.17 8.33
1187 NASDAQ NATR Wed, Apr 26, 1995 8.17 8.17 7.67 8.17
1186 NASDAQ NATR Tue, Apr 25, 1995 8.33 8.33 7.83 7.83
1185 NASDAQ NATR Mon, Apr 24, 1995 7.67 8.33 7.67 8.33
1184 NASDAQ NATR Fri, Apr 21, 1995 7.83 8.00 7.50 7.83
1183 NASDAQ NATR Thu, Apr 20, 1995 7.33 7.83 7.00 7.83
1182 NASDAQ NATR Wed, Apr 19, 1995 7.00 7.33 7.00 7.33
1181 NASDAQ NATR Tue, Apr 18, 1995 7.17 7.33 7.00 7.33
1180 NASDAQ NATR Mon, Apr 17, 1995 7.33 7.33 7.00 7.08
1179 NASDAQ NATR Thu, Apr 13, 1995 7.00 7.33 7.00 7.33
1178 NASDAQ NATR Wed, Apr 12, 1995 7.17 7.33 6.83 7.25
1177 NASDAQ NATR Tue, Apr 11, 1995 7.17 7.17 6.83 7.17
1176 NASDAQ NATR Mon, Apr 10, 1995 6.83 7.17 6.67 7.17
1175 NASDAQ NATR Fri, Apr 7, 1995 7.00 7.17 6.67 6.67
1174 NASDAQ NATR Thu, Apr 6, 1995 7.17 7.33 7.17 7.17
1173 NASDAQ NATR Wed, Apr 5, 1995 7.33 7.33 7.00 7.33
1172 NASDAQ NATR Tue, Apr 4, 1995 7.17 7.33 7.00 7.08
1171 NASDAQ NATR Mon, Apr 3, 1995 7.17 7.42 7.17 7.17
1170 NASDAQ NATR Fri, Mar 31, 1995 7.17 7.50 7.17 7.50
1169 NASDAQ NATR Thu, Mar 30, 1995 7.25 7.50 7.17 7.50
1168 NASDAQ NATR Wed, Mar 29, 1995 7.17 7.67 7.17 7.50
1167 NASDAQ NATR Tue, Mar 28, 1995 7.67 7.67 7.17 7.50
1166 NASDAQ NATR Mon, Mar 27, 1995 7.67 7.67 7.17 7.17
1165 NASDAQ NATR Fri, Mar 24, 1995 7.17 7.67 7.17 7.50
1164 NASDAQ NATR Thu, Mar 23, 1995 7.33 7.50 7.17 7.33
1163 NASDAQ NATR Wed, Mar 22, 1995 7.00 7.33 7.00 7.33
1162 NASDAQ NATR Tue, Mar 21, 1995 7.33 7.33 7.17 7.17
1161 NASDAQ NATR Mon, Mar 20, 1995 6.75 7.33 6.75 7.25
1160 NASDAQ NATR Fri, Mar 17, 1995 6.83 7.17 6.50 6.50
1159 NASDAQ NATR Thu, Mar 16, 1995 7.50 7.50 6.92 7.17
1158 NASDAQ NATR Wed, Mar 15, 1995 7.50 7.67 7.17 7.33
1157 NASDAQ NATR Tue, Mar 14, 1995 7.67 7.67 7.33 7.67
1156 NASDAQ NATR Mon, Mar 13, 1995 7.50 7.50 7.17 7.17
1155 NASDAQ NATR Fri, Mar 10, 1995 7.50 7.50 7.17 7.50
1154 NASDAQ NATR Thu, Mar 9, 1995 7.17 7.50 7.17 7.50
1153 NASDAQ NATR Wed, Mar 8, 1995 7.33 7.67 7.17 7.17
1152 NASDAQ NATR Tue, Mar 7, 1995 7.33 7.83 7.33 7.50
1151 NASDAQ NATR Mon, Mar 6, 1995 7.50 7.83 7.33 7.67
1150 NASDAQ NATR Fri, Mar 3, 1995 7.58 7.83 7.50 7.58
1149 NASDAQ NATR Thu, Mar 2, 1995 7.67 7.83 7.50 7.67
1148 NASDAQ NATR Wed, Mar 1, 1995 8.00 8.33 7.67 7.67
1147 NASDAQ NATR Tue, Feb 28, 1995 8.00 8.50 8.00 8.25
1146 NASDAQ NATR Mon, Feb 27, 1995 8.00 8.50 8.00 8.08
1145 NASDAQ NATR Fri, Feb 24, 1995 8.00 8.50 8.00 8.50
1144 NASDAQ NATR Thu, Feb 23, 1995 8.17 8.50 8.00 8.33
1143 NASDAQ NATR Wed, Feb 22, 1995 8.00 8.50 8.00 8.25
1142 NASDAQ NATR Tue, Feb 21, 1995 8.00 8.50 8.00 8.17
1141 NASDAQ NATR Fri, Feb 17, 1995 8.00 8.33 8.00 8.00
1140 NASDAQ NATR Thu, Feb 16, 1995 8.00 8.50 8.00 8.25
1139 NASDAQ NATR Wed, Feb 15, 1995 7.83 8.33 7.83 8.33
1138 NASDAQ NATR Tue, Feb 14, 1995 7.83 8.17 7.83 8.00
1137 NASDAQ NATR Mon, Feb 13, 1995 8.17 8.17 7.58 7.92
1136 NASDAQ NATR Fri, Feb 10, 1995 8.50 8.50 8.25 8.25
1135 NASDAQ NATR Thu, Feb 9, 1995 8.50 8.50 8.17 8.38
1134 NASDAQ NATR Wed, Feb 8, 1995 8.50 8.50 8.17 8.33
1133 NASDAQ NATR Tue, Feb 7, 1995 8.00 8.50 8.00 8.33
1132 NASDAQ NATR Mon, Feb 6, 1995 8.33 8.33 8.00 8.33
1131 NASDAQ NATR Fri, Feb 3, 1995 8.00 8.33 8.00 8.33
1130 NASDAQ NATR Thu, Feb 2, 1995 8.33 8.33 7.83 8.33
1129 NASDAQ NATR Wed, Feb 1, 1995 8.17 8.50 7.83 8.33
1128 NASDAQ NATR Tue, Jan 31, 1995 8.17 8.50 8.17 8.17
1127 NASDAQ NATR Mon, Jan 30, 1995 8.17 8.50 8.17 8.50
1126 NASDAQ NATR Fri, Jan 27, 1995 8.00 8.50 8.00 8.33
1125 NASDAQ NATR Thu, Jan 26, 1995 8.33 8.50 8.00 8.17
1124 NASDAQ NATR Wed, Jan 25, 1995 8.67 8.67 8.00 8.00
1123 NASDAQ NATR Tue, Jan 24, 1995 8.17 8.50 7.83 8.33
1122 NASDAQ NATR Mon, Jan 23, 1995 7.50 8.17 7.50 8.17
1121 NASDAQ NATR Fri, Jan 20, 1995 7.33 7.83 7.33 7.67
1120 NASDAQ NATR Thu, Jan 19, 1995 8.33 8.33 7.50 7.58
1119 NASDAQ NATR Wed, Jan 18, 1995 8.50 8.50 7.83 8.33
1118 NASDAQ NATR Tue, Jan 17, 1995 8.50 8.50 8.17 8.42
1117 NASDAQ NATR Mon, Jan 16, 1995 8.50 8.50 8.17 8.17
1116 NASDAQ NATR Fri, Jan 13, 1995 8.17 8.50 8.17 8.17
1115 NASDAQ NATR Thu, Jan 12, 1995 8.67 8.67 8.00 8.42
1114 NASDAQ NATR Wed, Jan 11, 1995 8.67 8.83 8.33 8.33
1113 NASDAQ NATR Tue, Jan 10, 1995 8.67 9.00 8.67 9.00
1112 NASDAQ NATR Mon, Jan 9, 1995 9.33 9.33 8.67 8.67
1111 NASDAQ NATR Fri, Jan 6, 1995 8.83 9.33 8.83 9.00
1110 NASDAQ NATR Thu, Jan 5, 1995 9.33 9.33 8.83 9.33
1109 NASDAQ NATR Wed, Jan 4, 1995 8.83 9.33 8.83 8.83
1108 NASDAQ NATR Tue, Jan 3, 1995 9.00 9.17 8.67 9.17
1107 NASDAQ NATR Fri, Dec 30, 1994 8.83 9.00 8.50 9.00
1106 NASDAQ NATR Thu, Dec 29, 1994 8.33 8.83 8.33 8.67
1105 NASDAQ NATR Wed, Dec 28, 1994 9.50 9.50 8.33 8.83
1104 NASDAQ NATR Tue, Dec 27, 1994 9.67 10.17 9.33 9.33
1103 NASDAQ NATR Fri, Dec 23, 1994 9.83 10.00 9.67 10.00
1102 NASDAQ NATR Thu, Dec 22, 1994 9.50 9.88 9.50 9.75
1101 NASDAQ NATR Wed, Dec 21, 1994 9.33 9.67 9.33 9.33
1100 NASDAQ NATR Tue, Dec 20, 1994 9.33 9.67 9.33 9.50
1099 NASDAQ NATR Mon, Dec 19, 1994 9.50 9.67 9.17 9.50
1098 NASDAQ NATR Fri, Dec 16, 1994 9.67 9.67 9.17 9.33
1097 NASDAQ NATR Thu, Dec 15, 1994 9.17 9.50 9.17 9.17
1096 NASDAQ NATR Wed, Dec 14, 1994 9.67 9.67 9.17 9.42
1095 NASDAQ NATR Tue, Dec 13, 1994 9.33 9.67 9.33 9.33
1094 NASDAQ NATR Mon, Dec 12, 1994 9.33 9.50 9.33 9.42
1093 NASDAQ NATR Fri, Dec 9, 1994 9.67 9.83 9.33 9.42
1092 NASDAQ NATR Thu, Dec 8, 1994 9.58 9.58 9.50 9.50
1091 NASDAQ NATR Wed, Dec 7, 1994 9.83 9.83 9.50 9.50
1090 NASDAQ NATR Tue, Dec 6, 1994 10.00 10.00 9.50 9.50
1089 NASDAQ NATR Mon, Dec 5, 1994 9.50 9.83 9.50 9.50
1088 NASDAQ NATR Fri, Dec 2, 1994 9.33 10.00 9.17 10.00
1087 NASDAQ NATR Thu, Dec 1, 1994 9.67 9.67 9.17 9.67
1086 NASDAQ NATR Wed, Nov 30, 1994 9.50 9.67 9.00 9.67
1085 NASDAQ NATR Tue, Nov 29, 1994 9.00 9.50 9.00 9.33
1084 NASDAQ NATR Mon, Nov 28, 1994 9.33 9.33 9.00 9.00
1083 NASDAQ NATR Fri, Nov 25, 1994 9.33 9.33 9.33 9.33
1082 NASDAQ NATR Wed, Nov 23, 1994 8.83 9.33 8.83 9.17
1081 NASDAQ NATR Tue, Nov 22, 1994 9.00 9.33 9.00 9.17
1080 NASDAQ NATR Mon, Nov 21, 1994 9.33 9.33 9.00 9.33
1079 NASDAQ NATR Fri, Nov 18, 1994 9.00 9.33 9.00 9.33
1078 NASDAQ NATR Thu, Nov 17, 1994 9.50 9.50 9.00 9.00
1077 NASDAQ NATR Wed, Nov 16, 1994 8.83 9.33 8.83 9.08
1076 NASDAQ NATR Tue, Nov 15, 1994 9.33 9.33 8.83 9.25
1075 NASDAQ NATR Mon, Nov 14, 1994 9.33 9.33 9.00 9.17
1074 NASDAQ NATR Fri, Nov 11, 1994 9.67 9.67 9.17 9.17
1073 NASDAQ NATR Thu, Nov 10, 1994 9.33 9.83 9.33 9.33
1072 NASDAQ NATR Wed, Nov 9, 1994 9.50 9.83 9.17 9.83
1071 NASDAQ NATR Tue, Nov 8, 1994 9.17 9.50 9.00 9.50
1070 NASDAQ NATR Mon, Nov 7, 1994 9.17 9.33 9.00 9.17
1069 NASDAQ NATR Fri, Nov 4, 1994 9.67 9.67 9.17 9.17
1068 NASDAQ NATR Thu, Nov 3, 1994 9.50 9.50 9.33 9.33
1067 NASDAQ NATR Wed, Nov 2, 1994 9.17 9.83 9.17 9.33
1066 NASDAQ NATR Tue, Nov 1, 1994 9.17 9.50 9.17 9.50
1065 NASDAQ NATR Mon, Oct 31, 1994 9.17 9.50 9.17 9.50
1064 NASDAQ NATR Fri, Oct 28, 1994 8.83 9.50 8.83 9.50
1063 NASDAQ NATR Thu, Oct 27, 1994 8.83 9.17 8.83 9.17
1062 NASDAQ NATR Wed, Oct 26, 1994 8.67 9.17 8.67 8.67
1061 NASDAQ NATR Tue, Oct 25, 1994 9.00 9.00 8.50 9.00
1060 NASDAQ NATR Mon, Oct 24, 1994 8.50 9.00 8.50 8.83
1059 NASDAQ NATR Fri, Oct 21, 1994 8.83 9.17 8.67 8.83
1058 NASDAQ NATR Thu, Oct 20, 1994 9.33 9.33 8.83 9.00
1057 NASDAQ NATR Wed, Oct 19, 1994 9.33 9.33 8.83 8.83
1056 NASDAQ NATR Tue, Oct 18, 1994 8.67 9.33 8.17 9.33
1055 NASDAQ NATR Mon, Oct 17, 1994 8.83 9.33 8.83 9.04
1054 NASDAQ NATR Fri, Oct 14, 1994 9.33 9.58 8.83 9.08
1053 NASDAQ NATR Thu, Oct 13, 1994 9.33 9.83 9.33 9.33
1052 NASDAQ NATR Wed, Oct 12, 1994 9.17 9.67 9.17 9.67
1051 NASDAQ NATR Tue, Oct 11, 1994 9.17 9.33 9.08 9.17
1050 NASDAQ NATR Mon, Oct 10, 1994 9.00 9.33 9.00 9.33
1049 NASDAQ NATR Fri, Oct 7, 1994 9.00 9.00 9.00 9.00
1048 NASDAQ NATR Thu, Oct 6, 1994 9.00 9.33 9.00 9.17
1047 NASDAQ NATR Wed, Oct 5, 1994 9.67 9.67 9.17 9.33
1046 NASDAQ NATR Tue, Oct 4, 1994 9.67 9.67 9.17 9.33
1045 NASDAQ NATR Mon, Oct 3, 1994 10.33 10.33 9.83 9.83
1044 NASDAQ NATR Fri, Sep 30, 1994 10.33 10.33 9.92 10.00
1043 NASDAQ NATR Thu, Sep 29, 1994 10.00 10.50 9.83 10.20
1042 NASDAQ NATR Wed, Sep 28, 1994 9.83 10.33 9.83 10.33
1041 NASDAQ NATR Tue, Sep 27, 1994 9.83 10.33 9.83 10.33
1040 NASDAQ NATR Mon, Sep 26, 1994 9.67 10.17 9.67 10.00
1039 NASDAQ NATR Fri, Sep 23, 1994 9.83 10.00 9.50 9.67
1038 NASDAQ NATR Thu, Sep 22, 1994 9.33 9.83 9.33 9.83
1037 NASDAQ NATR Wed, Sep 21, 1994 8.83 9.67 8.83 9.33
1036 NASDAQ NATR Tue, Sep 20, 1994 8.83 9.17 8.83 9.17
1035 NASDAQ NATR Mon, Sep 19, 1994 9.00 9.25 8.67 9.25
1034 NASDAQ NATR Fri, Sep 16, 1994 9.00 9.00 8.50 9.00
1033 NASDAQ NATR Thu, Sep 15, 1994 8.50 9.00 8.50 8.58
1032 NASDAQ NATR Wed, Sep 14, 1994 8.50 9.00 8.50 8.50
1031 NASDAQ NATR Tue, Sep 13, 1994 9.17 9.17 8.50 8.54
1030 NASDAQ NATR Mon, Sep 12, 1994 8.67 8.67 8.67 8.67
1029 NASDAQ NATR Fri, Sep 9, 1994 8.67 9.17 8.67 8.67
1028 NASDAQ NATR Thu, Sep 8, 1994 8.83 8.83 8.83 8.83
1027 NASDAQ NATR Wed, Sep 7, 1994 8.83 9.00 8.83 8.83
1026 NASDAQ NATR Tue, Sep 6, 1994 8.83 9.17 8.83 8.83
1025 NASDAQ NATR Fri, Sep 2, 1994 8.83 9.17 8.83 9.17
1024 NASDAQ NATR Thu, Sep 1, 1994 9.00 9.17 8.67 8.75
1023 NASDAQ NATR Wed, Aug 31, 1994 9.17 9.17 8.67 9.17
1022 NASDAQ NATR Tue, Aug 30, 1994 9.17 9.17 8.67 9.17
1021 NASDAQ NATR Mon, Aug 29, 1994 8.67 9.17 8.67 9.17
1020 NASDAQ NATR Fri, Aug 26, 1994 8.67 9.17 8.67 9.08
1019 NASDAQ NATR Thu, Aug 25, 1994 8.67 9.17 8.67 9.17
1018 NASDAQ NATR Wed, Aug 24, 1994 8.67 9.17 8.67 8.67
1017 NASDAQ NATR Tue, Aug 23, 1994 8.67 9.17 8.67 9.17
1016 NASDAQ NATR Mon, Aug 22, 1994 9.17 9.17 8.92 8.96
1015 NASDAQ NATR Fri, Aug 19, 1994 9.00 9.17 8.67 9.08
1014 NASDAQ NATR Thu, Aug 18, 1994 8.83 8.83 8.67 8.83
1013 NASDAQ NATR Wed, Aug 17, 1994 8.83 8.83 8.63 8.75
1012 NASDAQ NATR Tue, Aug 16, 1994 8.67 8.83 8.50 8.63
1011 NASDAQ NATR Mon, Aug 15, 1994 8.83 9.17 8.83 8.83
1010 NASDAQ NATR Fri, Aug 12, 1994 8.50 9.17 8.50 9.17
1009 NASDAQ NATR Thu, Aug 11, 1994 8.33 8.67 8.33 8.50
1008 NASDAQ NATR Wed, Aug 10, 1994 9.17 9.17 8.42 8.42
1007 NASDAQ NATR Tue, Aug 9, 1994 8.83 9.17 8.67 9.00
1006 NASDAQ NATR Mon, Aug 8, 1994 9.33 9.33 8.83 9.33
1005 NASDAQ NATR Fri, Aug 5, 1994 8.83 9.33 8.83 9.33
1004 NASDAQ NATR Thu, Aug 4, 1994 8.83 9.33 8.83 9.33
1003 NASDAQ NATR Wed, Aug 3, 1994 8.83 9.33 8.83 9.00
1002 NASDAQ NATR Tue, Aug 2, 1994 8.83 9.33 8.83 8.83
1001 NASDAQ NATR Mon, Aug 1, 1994 8.83 9.33 8.83 9.33
1000 NASDAQ NATR Fri, Jul 29, 1994 8.83 9.33 8.83 9.33
999 NASDAQ NATR Thu, Jul 28, 1994 8.83 9.33 8.83 9.33
998 NASDAQ NATR Wed, Jul 27, 1994 9.33 9.33 8.83 9.33
997 NASDAQ NATR Tue, Jul 26, 1994 8.83 9.33 8.83 9.25
996 NASDAQ NATR Mon, Jul 25, 1994 8.83 8.83 8.83 8.83
995 NASDAQ NATR Fri, Jul 22, 1994 9.33 9.33 8.83 9.33
994 NASDAQ NATR Thu, Jul 21, 1994 9.33 9.33 8.83 8.83
993 NASDAQ NATR Wed, Jul 20, 1994 9.00 9.33 8.83 9.33
992 NASDAQ NATR Tue, Jul 19, 1994 9.08 9.33 8.83 9.08
991 NASDAQ NATR Mon, Jul 18, 1994 8.67 9.33 8.67 9.33
990 NASDAQ NATR Fri, Jul 15, 1994 9.00 9.33 8.67 9.33
989 NASDAQ NATR Thu, Jul 14, 1994 9.17 9.33 9.00 9.33
988 NASDAQ NATR Wed, Jul 13, 1994 8.83 9.17 8.83 8.83
987 NASDAQ NATR Tue, Jul 12, 1994 8.67 9.17 8.67 9.04
986 NASDAQ NATR Mon, Jul 11, 1994 9.17 9.17 8.67 8.67
985 NASDAQ NATR Fri, Jul 8, 1994 8.83 8.92 8.67 8.67
984 NASDAQ NATR Thu, Jul 7, 1994 8.83 8.88 8.83 8.88
983 NASDAQ NATR Wed, Jul 6, 1994 8.83 8.88 8.83 8.88
982 NASDAQ NATR Tue, Jul 5, 1994 8.83 9.17 8.83 8.83
981 NASDAQ NATR Fri, Jul 1, 1994 9.17 9.17 8.83 8.92
980 NASDAQ NATR Thu, Jun 30, 1994 8.83 9.33 8.83 8.83
979 NASDAQ NATR Wed, Jun 29, 1994 9.17 9.17 8.67 9.17
978 NASDAQ NATR Tue, Jun 28, 1994 8.67 9.17 8.67 8.67
977 NASDAQ NATR Mon, Jun 27, 1994 8.67 9.17 8.67 9.00
976 NASDAQ NATR Fri, Jun 24, 1994 8.67 9.00 8.67 9.00
975 NASDAQ NATR Thu, Jun 23, 1994 8.67 9.17 8.67 8.67
974 NASDAQ NATR Wed, Jun 22, 1994 9.17 9.17 8.67 8.67
973 NASDAQ NATR Tue, Jun 21, 1994 8.67 9.17 8.67 9.17
972 NASDAQ NATR Mon, Jun 20, 1994 9.00 9.17 8.67 8.92
971 NASDAQ NATR Fri, Jun 17, 1994 9.33 9.33 9.00 9.33
970 NASDAQ NATR Thu, Jun 16, 1994 9.00 9.33 9.00 9.00
969 NASDAQ NATR Wed, Jun 15, 1994 9.00 9.33 9.00 9.00
968 NASDAQ NATR Tue, Jun 14, 1994 9.00 9.33 9.00 9.33
967 NASDAQ NATR Mon, Jun 13, 1994 9.00 9.50 9.00 9.00
966 NASDAQ NATR Fri, Jun 10, 1994 9.50 9.50 9.00 9.00
965 NASDAQ NATR Thu, Jun 9, 1994 9.00 9.50 9.00 9.50
964 NASDAQ NATR Wed, Jun 8, 1994 9.83 9.83 9.00 9.50
963 NASDAQ NATR Tue, Jun 7, 1994 10.00 10.00 9.50 9.67
962 NASDAQ NATR Mon, Jun 6, 1994 9.50 10.00 9.33 10.00
961 NASDAQ NATR Fri, Jun 3, 1994 9.17 9.50 9.00 9.42
960 NASDAQ NATR Thu, Jun 2, 1994 8.50 9.17 8.50 9.17
959 NASDAQ NATR Wed, Jun 1, 1994 8.50 9.00 8.50 8.79
958 NASDAQ NATR Tue, May 31, 1994 9.00 9.00 8.50 8.50
957 NASDAQ NATR Fri, May 27, 1994 8.50 9.00 8.50 9.00
956 NASDAQ NATR Thu, May 26, 1994 8.67 9.17 8.50 8.50
955 NASDAQ NATR Wed, May 25, 1994 9.17 9.17 8.67 8.67
954 NASDAQ NATR Tue, May 24, 1994 8.67 9.17 8.67 8.67
953 NASDAQ NATR Mon, May 23, 1994 9.17 9.17 8.67 8.67
952 NASDAQ NATR Fri, May 20, 1994 9.17 9.17 8.67 9.00
951 NASDAQ NATR Thu, May 19, 1994 9.67 9.67 8.83 9.00
950 NASDAQ NATR Wed, May 18, 1994 9.25 9.67 9.17 9.17
949 NASDAQ NATR Tue, May 17, 1994 9.33 9.67 9.33 9.33
948 NASDAQ NATR Mon, May 16, 1994 9.83 9.83 9.33 9.33
947 NASDAQ NATR Fri, May 13, 1994 10.00 10.00 9.50 9.50
946 NASDAQ NATR Thu, May 12, 1994 9.83 10.33 9.50 10.00
945 NASDAQ NATR Wed, May 11, 1994 9.92 10.33 9.83 10.00
944 NASDAQ NATR Tue, May 10, 1994 10.33 10.33 9.88 9.88
943 NASDAQ NATR Mon, May 9, 1994 10.00 10.50 10.00 10.00
942 NASDAQ NATR Fri, May 6, 1994 10.50 10.50 10.00 10.42
941 NASDAQ NATR Thu, May 5, 1994 10.33 10.33 10.00 10.33
940 NASDAQ NATR Wed, May 4, 1994 10.50 10.50 10.00 10.08
939 NASDAQ NATR Tue, May 3, 1994 10.50 10.50 10.00 10.50
938 NASDAQ NATR Mon, May 2, 1994 10.50 10.50 10.00 10.00
937 NASDAQ NATR Fri, Apr 29, 1994 10.17 10.50 10.00 10.50
936 NASDAQ NATR Thu, Apr 28, 1994 10.00 10.50 10.00 10.17
935 NASDAQ NATR Tue, Apr 26, 1994 10.50 10.50 10.00 10.00
934 NASDAQ NATR Mon, Apr 25, 1994 9.83 10.08 9.83 10.08
933 NASDAQ NATR Fri, Apr 22, 1994 10.00 10.50 10.00 10.00
932 NASDAQ NATR Thu, Apr 21, 1994 9.83 10.50 9.83 10.38
931 NASDAQ NATR Wed, Apr 20, 1994 10.00 10.50 9.83 10.17
930 NASDAQ NATR Tue, Apr 19, 1994 10.00 10.50 10.00 10.50
929 NASDAQ NATR Mon, Apr 18, 1994 10.50 10.50 10.00 10.00
928 NASDAQ NATR Fri, Apr 15, 1994 10.33 10.50 10.00 10.50
927 NASDAQ NATR Thu, Apr 14, 1994 9.33 10.17 9.33 9.83
926 NASDAQ NATR Wed, Apr 13, 1994 10.00 10.17 9.33 9.58
925 NASDAQ NATR Tue, Apr 12, 1994 10.17 10.67 10.00 10.00
924 NASDAQ NATR Mon, Apr 11, 1994 10.67 10.67 10.17 10.17
923 NASDAQ NATR Fri, Apr 8, 1994 10.33 10.67 10.33 10.33
922 NASDAQ NATR Thu, Apr 7, 1994 10.67 10.67 10.33 10.67
921 NASDAQ NATR Wed, Apr 6, 1994 10.67 10.67 10.33 10.54
920 NASDAQ NATR Tue, Apr 5, 1994 10.17 10.50 9.67 10.50
919 NASDAQ NATR Mon, Apr 4, 1994 9.50 10.00 9.50 9.67
918 NASDAQ NATR Thu, Mar 31, 1994 10.33 10.33 9.50 9.67
917 NASDAQ NATR Wed, Mar 30, 1994 10.50 10.50 9.67 10.33
916 NASDAQ NATR Tue, Mar 29, 1994 10.83 11.50 10.33 10.83
915 NASDAQ NATR Mon, Mar 28, 1994 11.50 11.83 10.83 11.50
914 NASDAQ NATR Fri, Mar 25, 1994 11.67 12.00 11.50 11.50
913 NASDAQ NATR Thu, Mar 24, 1994 12.00 12.00 11.67 11.83
912 NASDAQ NATR Wed, Mar 23, 1994 11.50 12.00 11.50 12.00
911 NASDAQ NATR Tue, Mar 22, 1994 11.50 11.83 11.50 11.50
910 NASDAQ NATR Mon, Mar 21, 1994 11.83 11.83 11.50 11.67
909 NASDAQ NATR Fri, Mar 18, 1994 11.83 11.83 11.50 11.67
908 NASDAQ NATR Thu, Mar 17, 1994 11.50 11.67 11.17 11.67
907 NASDAQ NATR Wed, Mar 16, 1994 11.17 11.50 11.17 11.50
906 NASDAQ NATR Tue, Mar 15, 1994 11.17 11.67 11.17 11.33
905 NASDAQ NATR Mon, Mar 14, 1994 11.67 11.67 11.17 11.58
904 NASDAQ NATR Fri, Mar 11, 1994 11.50 11.67 11.25 11.33
903 NASDAQ NATR Thu, Mar 10, 1994 11.50 11.50 11.17 11.42
902 NASDAQ NATR Wed, Mar 9, 1994 11.00 11.50 11.00 11.50
901 NASDAQ NATR Tue, Mar 8, 1994 11.17 11.33 10.83 11.17
900 NASDAQ NATR Mon, Mar 7, 1994 11.67 11.67 11.00 11.00
899 NASDAQ NATR Fri, Mar 4, 1994 11.00 11.83 10.67 11.42
898 NASDAQ NATR Thu, Mar 3, 1994 10.33 11.00 10.00 10.67
897 NASDAQ NATR Wed, Mar 2, 1994 9.50 10.00 9.50 10.00
896 NASDAQ NATR Tue, Mar 1, 1994 9.83 9.83 9.50 9.83
895 NASDAQ NATR Mon, Feb 28, 1994 9.83 9.83 9.50 9.83
894 NASDAQ NATR Fri, Feb 25, 1994 9.50 9.50 9.50 9.50
893 NASDAQ NATR Thu, Feb 24, 1994 9.67 9.67 9.50 9.67
892 NASDAQ NATR Wed, Feb 23, 1994 9.67 9.83 9.33 9.83
891 NASDAQ NATR Tue, Feb 22, 1994 9.83 9.83 9.33 9.75
890 NASDAQ NATR Fri, Feb 18, 1994 9.83 9.83 9.33 9.33
889 NASDAQ NATR Thu, Feb 17, 1994 10.00 10.00 9.50 9.58
888 NASDAQ NATR Wed, Feb 16, 1994 10.17 10.17 9.67 9.83
887 NASDAQ NATR Tue, Feb 15, 1994 9.33 10.17 9.17 10.00
886 NASDAQ NATR Mon, Feb 14, 1994 9.17 9.50 9.00 9.25
885 NASDAQ NATR Fri, Feb 11, 1994 9.17 9.17 8.67 8.83
884 NASDAQ NATR Thu, Feb 10, 1994 9.17 9.17 8.67 8.67
883 NASDAQ NATR Wed, Feb 9, 1994 9.17 9.17 8.67 9.00
882 NASDAQ NATR Tue, Feb 8, 1994 9.17 9.17 8.83 9.17
881 NASDAQ NATR Mon, Feb 7, 1994 8.58 9.17 8.50 8.92
880 NASDAQ NATR Fri, Feb 4, 1994 8.67 9.00 8.67 8.67
879 NASDAQ NATR Thu, Feb 3, 1994 8.67 9.00 8.67 8.67
878 NASDAQ NATR Wed, Feb 2, 1994 9.00 9.00 8.67 8.67
877 NASDAQ NATR Tue, Feb 1, 1994 9.00 9.00 8.50 9.00
876 NASDAQ NATR Mon, Jan 31, 1994 9.00 9.00 8.50 8.50
875 NASDAQ NATR Fri, Jan 28, 1994 8.83 9.00 8.67 8.83
874 NASDAQ NATR Thu, Jan 27, 1994 8.67 8.83 8.33 8.67
873 NASDAQ NATR Wed, Jan 26, 1994 8.67 8.83 8.50 8.67
872 NASDAQ NATR Tue, Jan 25, 1994 9.17 9.17 8.83 8.83
871 NASDAQ NATR Mon, Jan 24, 1994 8.83 9.17 8.83 8.83
870 NASDAQ NATR Fri, Jan 21, 1994 9.00 9.33 8.83 8.83
869 NASDAQ NATR Thu, Jan 20, 1994 9.08 9.33 7.75 9.08
868 NASDAQ NATR Wed, Jan 19, 1994 9.17 9.17 8.83 9.17
867 NASDAQ NATR Tue, Jan 18, 1994 9.17 9.17 8.83 8.83
866 NASDAQ NATR Mon, Jan 17, 1994 8.50 9.17 8.50 9.17
865 NASDAQ NATR Fri, Jan 14, 1994 8.83 8.83 8.50 8.58
864 NASDAQ NATR Thu, Jan 13, 1994 8.83 8.83 8.50 8.83
863 NASDAQ NATR Wed, Jan 12, 1994 9.00 9.00 8.50 8.83
862 NASDAQ NATR Tue, Jan 11, 1994 8.67 9.00 8.67 8.67
861 NASDAQ NATR Mon, Jan 10, 1994 8.67 8.83 8.67 8.67
860 NASDAQ NATR Fri, Jan 7, 1994 9.00 9.00 8.67 8.67
859 NASDAQ NATR Thu, Jan 6, 1994 7.67 8.67 7.50 8.67
858 NASDAQ NATR Wed, Jan 5, 1994 7.83 7.83 7.33 7.67
857 NASDAQ NATR Tue, Jan 4, 1994 7.83 8.17 7.50 7.83
856 NASDAQ NATR Mon, Jan 3, 1994 7.83 8.17 7.83 8.00
855 NASDAQ NATR Fri, Dec 31, 1993 8.17 8.17 7.83 8.17
854 NASDAQ NATR Thu, Dec 30, 1993 8.00 8.17 8.00 8.17
853 NASDAQ NATR Wed, Dec 29, 1993 8.17 8.17 7.83 8.00
852 NASDAQ NATR Tue, Dec 28, 1993 7.83 8.00 7.50 8.00
851 NASDAQ NATR Mon, Dec 27, 1993 7.50 8.00 7.33 7.67
850 NASDAQ NATR Thu, Dec 23, 1993 7.67 8.00 7.67 7.83
849 NASDAQ NATR Wed, Dec 22, 1993 7.83 8.17 7.67 8.00
848 NASDAQ NATR Tue, Dec 21, 1993 7.83 8.17 7.83 8.17
847 NASDAQ NATR Mon, Dec 20, 1993 7.83 8.33 7.83 8.33
846 NASDAQ NATR Fri, Dec 17, 1993 7.50 7.83 7.33 7.67
845 NASDAQ NATR Thu, Dec 16, 1993 6.83 7.33 6.83 7.33
844 NASDAQ NATR Wed, Dec 15, 1993 6.67 7.00 6.67 7.00
843 NASDAQ NATR Tue, Dec 14, 1993 7.00 7.00 6.67 6.67
842 NASDAQ NATR Mon, Dec 13, 1993 6.67 7.00 6.67 6.67
841 NASDAQ NATR Fri, Dec 10, 1993 7.00 7.00 6.83 7.00
840 NASDAQ NATR Thu, Dec 9, 1993 6.83 7.00 6.42 7.00
839 NASDAQ NATR Wed, Dec 8, 1993 6.67 7.17 6.50 6.83
838 NASDAQ NATR Tue, Dec 7, 1993 6.67 7.17 6.67 7.00
837 NASDAQ NATR Mon, Dec 6, 1993 6.67 7.17 6.67 7.00
836 NASDAQ NATR Fri, Dec 3, 1993 7.33 7.33 6.83 7.00
835 NASDAQ NATR Thu, Dec 2, 1993 7.33 7.33 7.00 7.33
834 NASDAQ NATR Wed, Dec 1, 1993 7.33 7.33 7.00 7.33
833 NASDAQ NATR Tue, Nov 30, 1993 7.33 7.33 7.00 7.33
832 NASDAQ NATR Mon, Nov 29, 1993 7.00 7.33 7.00 7.33
831 NASDAQ NATR Fri, Nov 26, 1993 7.33 7.33 7.00 7.00
830 NASDAQ NATR Wed, Nov 24, 1993 7.08 7.50 7.00 7.33
829 NASDAQ NATR Tue, Nov 23, 1993 7.00 7.50 7.00 7.50
828 NASDAQ NATR Mon, Nov 22, 1993 7.00 7.50 7.00 7.50
827 NASDAQ NATR Fri, Nov 19, 1993 7.50 7.50 7.00 7.50
826 NASDAQ NATR Thu, Nov 18, 1993 7.17 7.50 7.17 7.42
825 NASDAQ NATR Wed, Nov 17, 1993 7.17 7.67 7.17 7.67
824 NASDAQ NATR Tue, Nov 16, 1993 7.33 7.50 7.00 7.50
823 NASDAQ NATR Mon, Nov 15, 1993 7.33 7.67 7.17 7.33
822 NASDAQ NATR Fri, Nov 12, 1993 7.67 7.67 7.17 7.67
821 NASDAQ NATR Thu, Nov 11, 1993 7.67 7.67 7.17 7.33
820 NASDAQ NATR Wed, Nov 10, 1993 7.50 7.83 7.33 7.67
819 NASDAQ NATR Tue, Nov 9, 1993 7.50 7.67 7.50 7.58
818 NASDAQ NATR Mon, Nov 8, 1993 7.83 7.83 7.67 7.67
817 NASDAQ NATR Fri, Nov 5, 1993 7.83 7.83 7.33 7.83
816 NASDAQ NATR Thu, Nov 4, 1993 8.33 8.33 7.50 7.83
815 NASDAQ NATR Wed, Nov 3, 1993 8.50 8.50 8.00 8.17
814 NASDAQ NATR Tue, Nov 2, 1993 7.50 8.33 7.50 8.33
813 NASDAQ NATR Mon, Nov 1, 1993 7.67 7.67 7.50 7.67
812 NASDAQ NATR Fri, Oct 29, 1993 7.50 7.67 7.33 7.33
811 NASDAQ NATR Thu, Oct 28, 1993 7.83 7.83 7.50 7.67
810 NASDAQ NATR Wed, Oct 27, 1993 7.50 7.83 7.50 7.83
809 NASDAQ NATR Tue, Oct 26, 1993 7.33 7.83 7.33 7.83
808 NASDAQ NATR Mon, Oct 25, 1993 7.67 7.67 7.17 7.67
807 NASDAQ NATR Fri, Oct 22, 1993 7.67 7.67 7.17 7.42
806 NASDAQ NATR Thu, Oct 21, 1993 7.67 7.67 7.25 7.33
805 NASDAQ NATR Wed, Oct 20, 1993 7.33 7.50 7.00 7.33
804 NASDAQ NATR Tue, Oct 19, 1993 7.17 7.33 6.92 7.00
803 NASDAQ NATR Mon, Oct 18, 1993 7.50 7.50 7.17 7.33
802 NASDAQ NATR Fri, Oct 15, 1993 7.67 7.67 7.17 7.17
801 NASDAQ NATR Thu, Oct 14, 1993 7.67 7.67 7.17 7.67
800 NASDAQ NATR Wed, Oct 13, 1993 7.67 7.67 7.33 7.67
799 NASDAQ NATR Tue, Oct 12, 1993 7.17 7.67 7.17 7.67
798 NASDAQ NATR Mon, Oct 11, 1993 7.67 7.67 7.17 7.67
797 NASDAQ NATR Fri, Oct 8, 1993 7.50 7.75 7.50 7.50
796 NASDAQ NATR Thu, Oct 7, 1993 7.50 7.83 7.50 7.50
795 NASDAQ NATR Wed, Oct 6, 1993 8.00 8.00 7.50 7.83
794 NASDAQ NATR Tue, Oct 5, 1993 7.83 8.00 7.50 7.50
793 NASDAQ NATR Mon, Oct 4, 1993 7.50 8.00 7.50 7.75
792 NASDAQ NATR Fri, Oct 1, 1993 8.00 8.00 7.50 7.50
791 NASDAQ NATR Thu, Sep 30, 1993 8.00 8.00 8.00 8.00
790 NASDAQ NATR Wed, Sep 29, 1993 7.67 8.00 7.67 8.00
789 NASDAQ NATR Tue, Sep 28, 1993 7.67 8.00 7.67 7.67
788 NASDAQ NATR Mon, Sep 27, 1993 7.83 8.17 7.83 8.00
787 NASDAQ NATR Fri, Sep 24, 1993 8.17 8.17 7.83 7.83
786 NASDAQ NATR Thu, Sep 23, 1993 8.17 8.17 7.83 7.83
785 NASDAQ NATR Wed, Sep 22, 1993 7.50 8.17 7.50 7.83
784 NASDAQ NATR Tue, Sep 21, 1993 8.00 8.00 7.50 7.50
783 NASDAQ NATR Mon, Sep 20, 1993 7.67 8.00 7.67 8.00
782 NASDAQ NATR Fri, Sep 17, 1993 7.83 8.00 7.67 8.00
781 NASDAQ NATR Thu, Sep 16, 1993 8.17 8.17 7.83 7.83
780 NASDAQ NATR Wed, Sep 15, 1993 8.33 8.33 7.83 7.83
779 NASDAQ NATR Tue, Sep 14, 1993 7.33 8.33 7.33 8.25
778 NASDAQ NATR Mon, Sep 13, 1993 7.50 7.67 7.33 7.50
777 NASDAQ NATR Fri, Sep 10, 1993 6.83 7.50 6.83 7.50
776 NASDAQ NATR Thu, Sep 9, 1993 7.17 7.33 6.83 6.83
775 NASDAQ NATR Wed, Sep 8, 1993 6.83 7.17 6.83 7.17
774 NASDAQ NATR Tue, Sep 7, 1993 7.00 7.17 6.83 6.83
773 NASDAQ NATR Fri, Sep 3, 1993 7.00 7.00 6.75 7.00
772 NASDAQ NATR Thu, Sep 2, 1993 7.00 7.00 6.67 7.00
771 NASDAQ NATR Wed, Sep 1, 1993 6.50 7.00 6.50 7.00
770 NASDAQ NATR Tue, Aug 31, 1993 6.50 6.67 6.50 6.50
769 NASDAQ NATR Mon, Aug 30, 1993 6.83 6.83 6.50 6.50
768 NASDAQ NATR Fri, Aug 27, 1993 6.83 6.83 6.67 6.83
767 NASDAQ NATR Thu, Aug 26, 1993 6.67 7.00 6.50 6.50
766 NASDAQ NATR Wed, Aug 25, 1993 6.67 7.00 6.67 6.67
765 NASDAQ NATR Tue, Aug 24, 1993 6.83 7.00 6.58 7.00
764 NASDAQ NATR Mon, Aug 23, 1993 6.50 7.00 6.50 6.67
763 NASDAQ NATR Fri, Aug 20, 1993 6.67 7.00 6.67 6.67
762 NASDAQ NATR Thu, Aug 19, 1993 7.33 7.33 6.83 7.17
761 NASDAQ NATR Wed, Aug 18, 1993 7.33 7.33 7.00 7.17
760 NASDAQ NATR Tue, Aug 17, 1993 7.33 7.33 7.00 7.17
759 NASDAQ NATR Mon, Aug 16, 1993 7.33 7.33 7.00 7.00
758 NASDAQ NATR Fri, Aug 13, 1993 7.17 7.33 7.00 7.08
757 NASDAQ NATR Thu, Aug 12, 1993 7.33 7.33 7.00 7.00
756 NASDAQ NATR Wed, Aug 11, 1993 7.33 7.50 7.17 7.25
755 NASDAQ NATR Tue, Aug 10, 1993 7.33 7.50 7.17 7.17
754 NASDAQ NATR Mon, Aug 9, 1993 7.00 7.33 7.00 7.17
753 NASDAQ NATR Fri, Aug 6, 1993 7.33 7.33 6.83 7.00
752 NASDAQ NATR Thu, Aug 5, 1993 6.83 7.17 6.83 7.00
751 NASDAQ NATR Wed, Aug 4, 1993 6.42 7.00 6.42 6.92
750 NASDAQ NATR Tue, Aug 3, 1993 6.83 6.92 6.17 6.42
749 NASDAQ NATR Mon, Aug 2, 1993 7.17 7.33 6.67 7.00
748 NASDAQ NATR Fri, Jul 30, 1993 7.17 7.50 7.17 7.17
747 NASDAQ NATR Thu, Jul 29, 1993 7.17 7.33 7.00 7.33
746 NASDAQ NATR Wed, Jul 28, 1993 7.33 7.33 7.00 7.08
745 NASDAQ NATR Tue, Jul 27, 1993 7.67 7.67 7.17 7.17
744 NASDAQ NATR Mon, Jul 26, 1993 7.50 7.67 7.17 7.25
743 NASDAQ NATR Fri, Jul 23, 1993 7.50 7.50 7.17 7.25
742 NASDAQ NATR Thu, Jul 22, 1993 7.17 7.50 7.17 7.17
741 NASDAQ NATR Wed, Jul 21, 1993 7.17 7.50 7.17 7.50
740 NASDAQ NATR Tue, Jul 20, 1993 7.17 7.33 7.17 7.25
739 NASDAQ NATR Mon, Jul 19, 1993 7.67 7.67 7.17 7.33
738 NASDAQ NATR Fri, Jul 16, 1993 7.50 7.50 7.25 7.25
737 NASDAQ NATR Thu, Jul 15, 1993 7.17 7.67 7.17 7.33
736 NASDAQ NATR Wed, Jul 14, 1993 7.17 7.67 7.17 7.67
735 NASDAQ NATR Tue, Jul 13, 1993 7.67 8.00 7.00 7.25
734 NASDAQ NATR Mon, Jul 12, 1993 8.00 8.00 7.67 7.67
733 NASDAQ NATR Fri, Jul 9, 1993 7.83 8.00 7.50 8.00
732 NASDAQ NATR Thu, Jul 8, 1993 7.50 7.83 7.50 7.50
731 NASDAQ NATR Wed, Jul 7, 1993 7.50 7.50 7.17 7.50
730 NASDAQ NATR Tue, Jul 6, 1993 7.33 7.50 7.17 7.50
729 NASDAQ NATR Fri, Jul 2, 1993 7.50 7.50 7.33 7.42
728 NASDAQ NATR Thu, Jul 1, 1993 7.50 7.50 7.17 7.17
727 NASDAQ NATR Wed, Jun 30, 1993 7.50 7.50 7.17 7.50
726 NASDAQ NATR Tue, Jun 29, 1993 7.50 7.50 7.17 7.17
725 NASDAQ NATR Mon, Jun 28, 1993 6.67 7.50 6.67 7.17
724 NASDAQ NATR Fri, Jun 25, 1993 6.67 6.83 6.50 6.75
723 NASDAQ NATR Thu, Jun 24, 1993 6.17 6.17 5.83 6.17
722 NASDAQ NATR Wed, Jun 23, 1993 5.67 6.17 5.58 6.17
721 NASDAQ NATR Tue, Jun 22, 1993 6.50 6.50 5.83 6.17
720 NASDAQ NATR Mon, Jun 21, 1993 6.42 6.67 6.17 6.50
719 NASDAQ NATR Fri, Jun 18, 1993 6.67 6.67 6.33 6.58
718 NASDAQ NATR Thu, Jun 17, 1993 6.17 6.67 6.17 6.67
717 NASDAQ NATR Wed, Jun 16, 1993 6.67 6.67 6.17 6.33
716 NASDAQ NATR Tue, Jun 15, 1993 6.33 6.83 6.17 6.67
715 NASDAQ NATR Mon, Jun 14, 1993 6.83 6.83 6.33 6.83
714 NASDAQ NATR Fri, Jun 11, 1993 6.83 6.83 6.83 6.83
713 NASDAQ NATR Thu, Jun 10, 1993 6.67 6.67 6.33 6.67
712 NASDAQ NATR Wed, Jun 9, 1993 6.67 6.67 6.17 6.33
711 NASDAQ NATR Tue, Jun 8, 1993 6.75 6.75 6.17 6.67
710 NASDAQ NATR Mon, Jun 7, 1993 6.83 6.83 6.58 6.83
709 NASDAQ NATR Fri, Jun 4, 1993 6.83 6.83 6.67 6.75
708 NASDAQ NATR Thu, Jun 3, 1993 6.67 6.83 6.67 6.67
707 NASDAQ NATR Wed, Jun 2, 1993 6.67 6.75 6.33 6.75
706 NASDAQ NATR Tue, Jun 1, 1993 6.50 6.67 6.33 6.67
705 NASDAQ NATR Fri, May 28, 1993 6.67 6.67 6.33 6.50
704 NASDAQ NATR Thu, May 27, 1993 6.67 6.67 6.33 6.58
703 NASDAQ NATR Wed, May 26, 1993 6.33 6.67 6.33 6.50
702 NASDAQ NATR Tue, May 25, 1993 6.67 6.67 6.67 6.67
701 NASDAQ NATR Mon, May 24, 1993 6.67 6.67 6.17 6.67
700 NASDAQ NATR Fri, May 21, 1993 6.33 6.67 6.33 6.50
699 NASDAQ NATR Thu, May 20, 1993 6.67 6.67 6.33 6.67
698 NASDAQ NATR Wed, May 19, 1993 6.50 6.67 6.33 6.67
697 NASDAQ NATR Tue, May 18, 1993 6.50 6.67 6.33 6.50
696 NASDAQ NATR Mon, May 17, 1993 6.50 6.67 6.50 6.50
695 NASDAQ NATR Fri, May 14, 1993 6.50 6.67 6.50 6.67
694 NASDAQ NATR Thu, May 13, 1993 6.67 6.67 6.50 6.67
693 NASDAQ NATR Wed, May 12, 1993 6.50 6.67 6.50 6.50
692 NASDAQ NATR Tue, May 11, 1993 6.67 6.67 6.50 6.67
691 NASDAQ NATR Mon, May 10, 1993 6.67 6.67 6.50 6.58
690 NASDAQ NATR Fri, May 7, 1993 6.67 6.67 6.50 6.58
689 NASDAQ NATR Thu, May 6, 1993 6.83 6.83 6.50 6.67
688 NASDAQ NATR Wed, May 5, 1993 6.83 6.83 6.67 6.75
687 NASDAQ NATR Tue, May 4, 1993 6.67 6.83 6.33 6.75
686 NASDAQ NATR Mon, May 3, 1993 6.67 6.67 6.33 6.67
685 NASDAQ NATR Fri, Apr 30, 1993 6.33 6.67 6.33 6.67
684 NASDAQ NATR Thu, Apr 29, 1993 6.67 6.83 6.33 6.42
683 NASDAQ NATR Wed, Apr 28, 1993 6.67 6.67 6.17 6.67
682 NASDAQ NATR Tue, Apr 27, 1993 6.17 6.67 6.17 6.50
681 NASDAQ NATR Mon, Apr 26, 1993 7.00 7.00 6.25 6.33
680 NASDAQ NATR Fri, Apr 23, 1993 6.67 7.00 6.67 6.67
679 NASDAQ NATR Thu, Apr 22, 1993 7.33 7.50 6.83 7.00
678 NASDAQ NATR Wed, Apr 21, 1993 7.67 7.67 7.08 7.17
677 NASDAQ NATR Tue, Apr 20, 1993 7.67 7.67 7.17 7.17
676 NASDAQ NATR Mon, Apr 19, 1993 8.00 8.17 7.17 7.67
675 NASDAQ NATR Fri, Apr 16, 1993 7.33 7.33 6.83 7.33
674 NASDAQ NATR Thu, Apr 15, 1993 6.33 7.33 6.33 7.33
673 NASDAQ NATR Wed, Apr 14, 1993 6.67 6.83 6.67 6.83
672 NASDAQ NATR Tue, Apr 13, 1993 6.67 6.83 6.33 6.83
671 NASDAQ NATR Mon, Apr 12, 1993 6.33 6.67 5.83 6.58
670 NASDAQ NATR Thu, Apr 8, 1993 6.00 6.33 5.83 6.00
669 NASDAQ NATR Wed, Apr 7, 1993 6.33 6.33 6.00 6.00
668 NASDAQ NATR Tue, Apr 6, 1993 6.00 6.33 6.00 6.00
667 NASDAQ NATR Mon, Apr 5, 1993 6.33 6.50 6.00 6.00
666 NASDAQ NATR Fri, Apr 2, 1993 6.50 6.50 6.33 6.33
665 NASDAQ NATR Thu, Apr 1, 1993 6.33 6.67 6.33 6.33
664 NASDAQ NATR Wed, Mar 31, 1993 6.33 6.67 6.33 6.67
663 NASDAQ NATR Tue, Mar 30, 1993 6.33 6.67 6.33 6.50
662 NASDAQ NATR Mon, Mar 29, 1993 6.67 6.67 6.33 6.50
661 NASDAQ NATR Fri, Mar 26, 1993 6.17 6.67 6.17 6.58
660 NASDAQ NATR Thu, Mar 25, 1993 6.67 6.67 6.17 6.42
659 NASDAQ NATR Wed, Mar 24, 1993 7.17 7.17 6.17 6.42
658 NASDAQ NATR Tue, Mar 23, 1993 6.67 7.17 6.67 6.67
657 NASDAQ NATR Mon, Mar 22, 1993 7.00 7.33 6.67 6.83
656 NASDAQ NATR Fri, Mar 19, 1993 7.00 7.33 7.00 7.33
655 NASDAQ NATR Thu, Mar 18, 1993 7.33 7.33 7.00 7.00
654 NASDAQ NATR Wed, Mar 17, 1993 7.83 7.83 7.00 7.00
653 NASDAQ NATR Tue, Mar 16, 1993 7.83 7.83 7.33 7.33
652 NASDAQ NATR Mon, Mar 15, 1993 7.33 7.83 7.33 7.67
651 NASDAQ NATR Fri, Mar 12, 1993 7.33 7.33 7.33 7.33
650 NASDAQ NATR Thu, Mar 11, 1993 7.83 7.83 7.33 7.58
649 NASDAQ NATR Wed, Mar 10, 1993 8.00 8.00 7.58 7.83
648 NASDAQ NATR Tue, Mar 9, 1993 7.67 8.00 7.67 7.67
647 NASDAQ NATR Mon, Mar 8, 1993 7.67 8.17 7.67 8.00
646 NASDAQ NATR Fri, Mar 5, 1993 8.00 8.17 7.67 8.17
645 NASDAQ NATR Thu, Mar 4, 1993 7.83 8.17 7.83 8.00
644 NASDAQ NATR Wed, Mar 3, 1993 7.83 8.17 7.83 8.08
643 NASDAQ NATR Tue, Mar 2, 1993 8.17 8.33 7.83 7.83
642 NASDAQ NATR Mon, Mar 1, 1993 8.00 8.33 7.67 8.33
641 NASDAQ NATR Fri, Feb 26, 1993 7.83 8.00 7.67 8.00
640 NASDAQ NATR Thu, Feb 25, 1993 7.50 7.67 7.33 7.50
639 NASDAQ NATR Wed, Feb 24, 1993 7.50 7.67 7.33 7.67
638 NASDAQ NATR Tue, Feb 23, 1993 7.67 7.67 7.17 7.17
637 NASDAQ NATR Mon, Feb 22, 1993 7.67 7.67 7.17 7.17
636 NASDAQ NATR Fri, Feb 19, 1993 7.67 7.67 7.33 7.33
635 NASDAQ NATR Thu, Feb 18, 1993 8.17 8.17 7.33 7.42
634 NASDAQ NATR Wed, Feb 17, 1993 8.50 8.92 7.50 8.00
633 NASDAQ NATR Tue, Feb 16, 1993 9.17 9.17 8.67 8.67
632 NASDAQ NATR Fri, Feb 12, 1993 9.00 9.00 8.67 8.83
631 NASDAQ NATR Thu, Feb 11, 1993 9.17 9.17 8.67 8.67
630 NASDAQ NATR Wed, Feb 10, 1993 9.00 9.17 8.83 9.00
629 NASDAQ NATR Tue, Feb 9, 1993 9.33 9.33 9.00 9.17
628 NASDAQ NATR Mon, Feb 8, 1993 8.83 9.33 8.83 9.25
627 NASDAQ NATR Fri, Feb 5, 1993 9.33 9.33 8.83 8.83
626 NASDAQ NATR Thu, Feb 4, 1993 9.33 9.50 9.00 9.17
625 NASDAQ NATR Wed, Feb 3, 1993 9.17 9.50 9.00 9.00
624 NASDAQ NATR Tue, Feb 2, 1993 9.67 9.67 9.17 9.17
623 NASDAQ NATR Mon, Feb 1, 1993 9.83 9.83 9.33 9.33
622 NASDAQ NATR Fri, Jan 29, 1993 9.00 9.25 9.00 9.25
621 NASDAQ NATR Thu, Jan 28, 1993 8.88 9.25 8.88 9.13
620 NASDAQ NATR Wed, Jan 27, 1993 9.00 9.25 8.88 8.88
619 NASDAQ NATR Tue, Jan 26, 1993 9.00 9.25 9.00 9.00
618 NASDAQ NATR Mon, Jan 25, 1993 9.00 9.25 9.00 9.00
617 NASDAQ NATR Fri, Jan 22, 1993 9.00 9.25 9.00 9.00
616 NASDAQ NATR Thu, Jan 21, 1993 8.88 9.25 8.88 9.00
615 NASDAQ NATR Wed, Jan 20, 1993 8.88 9.25 8.88 8.88
614 NASDAQ NATR Tue, Jan 19, 1993 9.38 9.38 9.13 9.25
613 NASDAQ NATR Mon, Jan 18, 1993 9.38 9.38 9.00 9.13
612 NASDAQ NATR Fri, Jan 15, 1993 9.13 9.38 8.75 9.38
611 NASDAQ NATR Thu, Jan 14, 1993 9.13 9.13 8.88 9.13
610 NASDAQ NATR Wed, Jan 13, 1993 9.13 9.13 8.88 9.00
609 NASDAQ NATR Tue, Jan 12, 1993 8.50 9.06 8.50 9.06
608 NASDAQ NATR Mon, Jan 11, 1993 8.75 8.75 8.50 8.75
607 NASDAQ NATR Fri, Jan 8, 1993 8.38 8.75 8.38 8.38
606 NASDAQ NATR Thu, Jan 7, 1993 8.75 8.75 8.38 8.38
605 NASDAQ NATR Wed, Jan 6, 1993 9.00 9.00 8.38 8.38
604 NASDAQ NATR Tue, Jan 5, 1993 9.38 9.38 8.63 8.88
603 NASDAQ NATR Mon, Jan 4, 1993 9.63 9.63 9.00 9.00
602 NASDAQ NATR Thu, Dec 31, 1992 8.88 9.63 8.75 9.50
601 NASDAQ NATR Wed, Dec 30, 1992 8.63 8.88 8.63 8.63
600 NASDAQ NATR Tue, Dec 29, 1992 8.88 9.00 8.63 8.63
599 NASDAQ NATR Mon, Dec 28, 1992 8.88 9.13 8.50 8.88
598 NASDAQ NATR Thu, Dec 24, 1992 9.00 9.13 8.88 9.13
597 NASDAQ NATR Wed, Dec 23, 1992 9.13 9.13 8.63 9.00
596 NASDAQ NATR Tue, Dec 22, 1992 8.38 8.75 8.38 8.75
595 NASDAQ NATR Mon, Dec 21, 1992 8.50 8.63 8.13 8.50
594 NASDAQ NATR Fri, Dec 18, 1992 7.88 8.50 7.75 8.38
593 NASDAQ NATR Thu, Dec 17, 1992 7.25 7.88 7.25 7.88
592 NASDAQ NATR Wed, Dec 16, 1992 7.38 7.75 7.25 7.50
591 NASDAQ NATR Tue, Dec 15, 1992 8.00 8.00 7.38 7.50
590 NASDAQ NATR Mon, Dec 14, 1992 7.75 8.00 7.75 8.00
589 NASDAQ NATR Fri, Dec 11, 1992 8.00 8.00 7.50 7.88
588 NASDAQ NATR Thu, Dec 10, 1992 8.38 8.38 8.00 8.25
587 NASDAQ NATR Wed, Dec 9, 1992 8.50 8.50 8.13 8.38
586 NASDAQ NATR Tue, Dec 8, 1992 8.38 8.75 8.38 8.50
585 NASDAQ NATR Mon, Dec 7, 1992 8.38 8.75 8.38 8.63
584 NASDAQ NATR Fri, Dec 4, 1992 8.50 8.88 8.50 8.75
583 NASDAQ NATR Thu, Dec 3, 1992 9.00 9.00 8.50 8.63
582 NASDAQ NATR Wed, Dec 2, 1992 9.25 9.25 8.75 8.75
581 NASDAQ NATR Tue, Dec 1, 1992 8.38 9.25 8.25 9.00
580 NASDAQ NATR Mon, Nov 30, 1992 8.00 8.63 7.63 8.25
579 NASDAQ NATR Fri, Nov 27, 1992 7.25 7.88 7.13 7.81
578 NASDAQ NATR Wed, Nov 25, 1992 6.75 7.25 6.75 6.94
577 NASDAQ NATR Tue, Nov 24, 1992 7.13 7.13 6.75 6.88
576 NASDAQ NATR Mon, Nov 23, 1992 6.88 7.00 6.63 7.00
575 NASDAQ NATR Fri, Nov 20, 1992 6.63 6.94 6.63 6.75
574 NASDAQ NATR Thu, Nov 19, 1992 6.88 6.88 6.88 6.88
573 NASDAQ NATR Wed, Nov 18, 1992 6.63 6.88 6.63 6.88
572 NASDAQ NATR Tue, Nov 17, 1992 7.00 7.00 6.50 6.88
571 NASDAQ NATR Mon, Nov 16, 1992 7.13 7.13 6.88 6.88
570 NASDAQ NATR Fri, Nov 13, 1992 6.88 7.13 6.88 7.00
569 NASDAQ NATR Thu, Nov 12, 1992 7.25 7.25 6.88 7.13
568 NASDAQ NATR Wed, Nov 11, 1992 7.25 7.25 7.00 7.13
567 NASDAQ NATR Tue, Nov 10, 1992 7.00 7.25 6.88 7.00
566 NASDAQ NATR Mon, Nov 9, 1992 7.00 7.00 6.75 7.00
565 NASDAQ NATR Fri, Nov 6, 1992 7.00 7.00 6.75 6.81
564 NASDAQ NATR Thu, Nov 5, 1992 7.00 7.00 6.75 6.75
563 NASDAQ NATR Wed, Nov 4, 1992 6.75 7.00 6.75 6.75
562 NASDAQ NATR Tue, Nov 3, 1992 7.00 7.00 6.75 6.75
561 NASDAQ NATR Mon, Nov 2, 1992 6.75 7.00 6.75 7.00
560 NASDAQ NATR Fri, Oct 30, 1992 7.00 7.00 6.75 7.00
559 NASDAQ NATR Thu, Oct 29, 1992 6.88 7.00 6.75 6.88
558 NASDAQ NATR Wed, Oct 28, 1992 6.63 6.88 6.50 6.88
557 NASDAQ NATR Tue, Oct 27, 1992 6.75 6.75 6.13 6.50
556 NASDAQ NATR Mon, Oct 26, 1992 7.00 7.00 6.75 6.75
555 NASDAQ NATR Fri, Oct 23, 1992 6.75 7.00 6.75 6.75
554 NASDAQ NATR Thu, Oct 22, 1992 7.00 7.13 6.75 6.75
553 NASDAQ NATR Wed, Oct 21, 1992 7.13 7.13 6.88 7.00
552 NASDAQ NATR Tue, Oct 20, 1992 7.00 7.13 6.75 6.88
551 NASDAQ NATR Mon, Oct 19, 1992 6.38 7.25 6.38 6.88
550 NASDAQ NATR Fri, Oct 16, 1992 6.13 6.38 6.13 6.38
549 NASDAQ NATR Thu, Oct 15, 1992 6.38 6.38 6.25 6.38
548 NASDAQ NATR Wed, Oct 14, 1992 6.38 6.38 6.00 6.38
547 NASDAQ NATR Tue, Oct 13, 1992 6.13 6.50 6.00 6.00
546 NASDAQ NATR Mon, Oct 12, 1992 6.00 6.13 6.00 6.00
545 NASDAQ NATR Fri, Oct 9, 1992 6.13 6.13 5.88 6.00
544 NASDAQ NATR Thu, Oct 8, 1992 6.13 6.13 5.88 6.13
543 NASDAQ NATR Wed, Oct 7, 1992 5.88 6.13 5.88 6.13
542 NASDAQ NATR Tue, Oct 6, 1992 5.88 6.13 5.75 6.13
541 NASDAQ NATR Mon, Oct 5, 1992 5.75 5.88 5.63 5.88
540 NASDAQ NATR Fri, Oct 2, 1992 5.88 5.88 5.63 5.63
539 NASDAQ NATR Thu, Oct 1, 1992 5.88 5.88 5.75 5.88
538 NASDAQ NATR Wed, Sep 30, 1992 5.88 5.88 5.50 5.75
537 NASDAQ NATR Tue, Sep 29, 1992 5.88 5.88 5.69 5.88
536 NASDAQ NATR Mon, Sep 28, 1992 5.75 5.75 5.50 5.63
535 NASDAQ NATR Fri, Sep 25, 1992 5.63 5.88 5.63 5.88
534 NASDAQ NATR Thu, Sep 24, 1992 5.63 6.13 5.63 5.75
533 NASDAQ NATR Wed, Sep 23, 1992 5.50 5.75 5.50 5.75
532 NASDAQ NATR Tue, Sep 22, 1992 5.75 5.75 5.50 5.75
531 NASDAQ NATR Mon, Sep 21, 1992 5.75 5.75 5.63 5.75
530 NASDAQ NATR Fri, Sep 18, 1992 5.75 5.75 5.50 5.75
529 NASDAQ NATR Thu, Sep 17, 1992 5.63 5.75 5.38 5.63
528 NASDAQ NATR Wed, Sep 16, 1992 5.25 5.63 5.25 5.50
527 NASDAQ NATR Tue, Sep 15, 1992 5.63 5.63 5.25 5.44
526 NASDAQ NATR Mon, Sep 14, 1992 5.88 5.88 5.63 5.63
525 NASDAQ NATR Fri, Sep 11, 1992 5.88 5.88 5.63 5.88
524 NASDAQ NATR Thu, Sep 10, 1992 5.63 5.88 5.63 5.63
523 NASDAQ NATR Wed, Sep 9, 1992 5.75 5.88 5.75 5.88
522 NASDAQ NATR Tue, Sep 8, 1992 5.63 5.88 5.63 5.88
521 NASDAQ NATR Fri, Sep 4, 1992 5.63 5.63 5.63 5.63
520 NASDAQ NATR Thu, Sep 3, 1992 5.88 5.88 5.75 5.75
519 NASDAQ NATR Wed, Sep 2, 1992 5.50 5.75 5.50 5.75
518 NASDAQ NATR Tue, Sep 1, 1992 5.63 5.63 5.63 5.63
517 NASDAQ NATR Mon, Aug 31, 1992 5.25 5.63 5.25 5.63
516 NASDAQ NATR Fri, Aug 28, 1992 5.38 5.38 5.38 5.38
515 NASDAQ NATR Thu, Aug 27, 1992 5.88 5.88 5.50 5.75
514 NASDAQ NATR Wed, Aug 26, 1992 5.63 6.00 5.63 5.88
513 NASDAQ NATR Tue, Aug 25, 1992 5.75 5.94 5.63 5.63
512 NASDAQ NATR Mon, Aug 24, 1992 5.88 6.00 5.75 5.75
511 NASDAQ NATR Fri, Aug 21, 1992 5.88 6.13 5.88 5.88
510 NASDAQ NATR Wed, Aug 19, 1992 6.13 6.13 5.88 5.88
509 NASDAQ NATR Tue, Aug 18, 1992 6.00 6.25 6.00 6.00
508 NASDAQ NATR Fri, Aug 14, 1992 6.38 6.38 6.13 6.38
507 NASDAQ NATR Thu, Aug 13, 1992 6.38 6.38 6.00 6.25
506 NASDAQ NATR Wed, Aug 12, 1992 6.38 6.38 6.00 6.38
505 NASDAQ NATR Tue, Aug 11, 1992 6.00 6.25 6.00 6.13
504 NASDAQ NATR Mon, Aug 10, 1992 6.25 6.25 6.00 6.00
503 NASDAQ NATR Fri, Aug 7, 1992 6.19 6.38 6.19 6.38
502 NASDAQ NATR Thu, Aug 6, 1992 6.00 6.00 6.00 6.00
501 NASDAQ NATR Wed, Aug 5, 1992 5.88 6.25 5.88 6.00
500 NASDAQ NATR Tue, Aug 4, 1992 5.75 6.13 5.75 5.88
499 NASDAQ NATR Mon, Aug 3, 1992 5.63 5.88 5.63 5.81
498 NASDAQ NATR Fri, Jul 31, 1992 6.00 6.00 5.63 5.88
497 NASDAQ NATR Thu, Jul 30, 1992 6.00 6.00 5.63 6.00
496 NASDAQ NATR Wed, Jul 29, 1992 6.00 6.00 5.63 5.63
495 NASDAQ NATR Tue, Jul 28, 1992 5.63 5.88 5.63 5.88
494 NASDAQ NATR Mon, Jul 27, 1992 5.88 6.00 5.63 5.63
493 NASDAQ NATR Fri, Jul 24, 1992 6.00 6.00 5.75 5.88
492 NASDAQ NATR Thu, Jul 23, 1992 5.75 6.00 5.63 5.81
491 NASDAQ NATR Wed, Jul 22, 1992 6.00 6.00 5.75 5.75
490 NASDAQ NATR Tue, Jul 21, 1992 5.75 6.00 5.50 5.88
489 NASDAQ NATR Mon, Jul 20, 1992 5.25 5.63 5.13 5.63
488 NASDAQ NATR Fri, Jul 17, 1992 5.63 5.63 5.38 5.63
487 NASDAQ NATR Thu, Jul 16, 1992 5.00 5.75 4.88 5.38
486 NASDAQ NATR Wed, Jul 15, 1992 4.56 5.00 4.50 5.00
485 NASDAQ NATR Tue, Jul 14, 1992 4.50 4.56 4.38 4.44
484 NASDAQ NATR Mon, Jul 13, 1992 4.63 4.63 4.38 4.44
483 NASDAQ NATR Fri, Jul 10, 1992 4.38 4.63 4.38 4.63
482 NASDAQ NATR Thu, Jul 9, 1992 4.63 4.63 4.25 4.63
481 NASDAQ NATR Wed, Jul 8, 1992 4.38 4.38 4.00 4.38
480 NASDAQ NATR Tue, Jul 7, 1992 4.69 4.75 4.25 4.38
479 NASDAQ NATR Mon, Jul 6, 1992 4.75 4.75 4.63 4.63
478 NASDAQ NATR Thu, Jul 2, 1992 5.00 5.00 4.50 4.75
477 NASDAQ NATR Wed, Jul 1, 1992 5.00 5.00 4.75 5.00
476 NASDAQ NATR Tue, Jun 30, 1992 4.81 5.00 4.75 5.00
475 NASDAQ NATR Mon, Jun 29, 1992 4.75 4.75 4.75 4.75
474 NASDAQ NATR Fri, Jun 26, 1992 5.00 5.00 4.75 4.75
473 NASDAQ NATR Thu, Jun 25, 1992 4.88 5.00 4.88 5.00
472 NASDAQ NATR Wed, Jun 24, 1992 5.00 5.00 4.94 5.00
471 NASDAQ NATR Tue, Jun 23, 1992 5.19 5.19 4.88 4.94
470 NASDAQ NATR Mon, Jun 22, 1992 5.13 5.25 5.13 5.19
469 NASDAQ NATR Fri, Jun 19, 1992 5.38 5.38 5.25 5.25
468 NASDAQ NATR Thu, Jun 18, 1992 5.25 5.25 5.25 5.25
467 NASDAQ NATR Wed, Jun 17, 1992 5.13 5.25 5.13 5.25
466 NASDAQ NATR Tue, Jun 16, 1992 5.50 5.50 5.13 5.25
465 NASDAQ NATR Mon, Jun 15, 1992 5.50 5.50 5.50 5.50
464 NASDAQ NATR Fri, Jun 12, 1992 5.13 5.50 5.00 5.50
463 NASDAQ NATR Thu, Jun 11, 1992 5.13 5.13 4.88 5.00
462 NASDAQ NATR Wed, Jun 10, 1992 4.75 5.13 4.63 5.00
461 NASDAQ NATR Tue, Jun 9, 1992 4.88 5.00 4.38 4.63
460 NASDAQ NATR Mon, Jun 8, 1992 5.38 5.38 4.88 5.00
459 NASDAQ NATR Fri, Jun 5, 1992 5.38 5.50 5.25 5.25
458 NASDAQ NATR Thu, Jun 4, 1992 5.50 5.50 5.38 5.38
457 NASDAQ NATR Wed, Jun 3, 1992 5.38 5.50 5.38 5.38
456 NASDAQ NATR Tue, Jun 2, 1992 5.50 5.50 5.38 5.50
455 NASDAQ NATR Mon, Jun 1, 1992 5.50 5.50 5.38 5.50
454 NASDAQ NATR Fri, May 29, 1992 5.50 5.50 5.38 5.38
453 NASDAQ NATR Thu, May 28, 1992 5.50 5.50 5.38 5.50
452 NASDAQ NATR Wed, May 27, 1992 5.50 5.50 5.38 5.50
451 NASDAQ NATR Tue, May 26, 1992 5.38 5.63 5.38 5.38
450 NASDAQ NATR Fri, May 22, 1992 5.63 5.63 5.50 5.50
449 NASDAQ NATR Thu, May 21, 1992 5.63 5.63 5.25 5.50
448 NASDAQ NATR Wed, May 20, 1992 5.63 5.63 5.38 5.38
447 NASDAQ NATR Tue, May 19, 1992 5.63 5.63 5.25 5.63
446 NASDAQ NATR Mon, May 18, 1992 5.25 5.63 5.13 5.50
445 NASDAQ NATR Fri, May 15, 1992 5.25 5.25 4.88 5.25
444 NASDAQ NATR Thu, May 14, 1992 5.50 5.50 5.00 5.38
443 NASDAQ NATR Wed, May 13, 1992 5.50 5.63 5.50 5.50
442 NASDAQ NATR Tue, May 12, 1992 5.88 5.88 5.50 5.50
441 NASDAQ NATR Mon, May 11, 1992 5.50 5.75 5.50 5.50
440 NASDAQ NATR Fri, May 8, 1992 5.75 5.88 5.50 5.75
439 NASDAQ NATR Thu, May 7, 1992 5.75 5.88 5.50 5.88
438 NASDAQ NATR Wed, May 6, 1992 5.75 6.00 5.75 6.00
437 NASDAQ NATR Tue, May 5, 1992 6.25 6.25 5.75 5.75
436 NASDAQ NATR Mon, May 4, 1992 5.75 6.13 5.75 5.94
435 NASDAQ NATR Fri, May 1, 1992 6.25 6.25 5.94 6.00
434 NASDAQ NATR Thu, Apr 30, 1992 5.75 6.25 5.75 6.25
433 NASDAQ NATR Wed, Apr 29, 1992 6.13 6.25 5.88 6.25
432 NASDAQ NATR Tue, Apr 28, 1992 6.25 6.25 6.00 6.00
431 NASDAQ NATR Mon, Apr 27, 1992 6.25 6.50 6.13 6.13
430 NASDAQ NATR Fri, Apr 24, 1992 5.63 6.50 5.38 6.25
429 NASDAQ NATR Thu, Apr 23, 1992 5.75 5.75 5.38 5.75
428 NASDAQ NATR Wed, Apr 22, 1992 5.38 5.75 5.38 5.75
427 NASDAQ NATR Tue, Apr 21, 1992 6.00 6.00 5.25 5.63
426 NASDAQ NATR Mon, Apr 20, 1992 6.38 6.38 5.63 5.88
425 NASDAQ NATR Thu, Apr 16, 1992 7.13 7.13 6.38 6.38
424 NASDAQ NATR Wed, Apr 15, 1992 7.00 7.13 6.75 7.13
423 NASDAQ NATR Tue, Apr 14, 1992 7.13 7.13 6.75 7.00
422 NASDAQ NATR Mon, Apr 13, 1992 7.00 7.13 6.75 6.75
421 NASDAQ NATR Fri, Apr 10, 1992 6.13 6.88 6.13 6.63
420 NASDAQ NATR Thu, Apr 9, 1992 6.13 6.25 6.00 6.25
419 NASDAQ NATR Wed, Apr 8, 1992 6.00 6.19 5.88 6.13
418 NASDAQ NATR Tue, Apr 7, 1992 6.25 6.63 6.25 6.31
417 NASDAQ NATR Mon, Apr 6, 1992 6.25 6.63 6.25 6.63
416 NASDAQ NATR Fri, Apr 3, 1992 6.25 6.63 6.25 6.44
415 NASDAQ NATR Thu, Apr 2, 1992 6.50 6.63 6.13 6.25
414 NASDAQ NATR Wed, Apr 1, 1992 5.63 6.50 5.63 6.50
413 NASDAQ NATR Tue, Mar 31, 1992 6.25 6.25 5.75 5.88
412 NASDAQ NATR Mon, Mar 30, 1992 6.13 6.50 6.13 6.38
411 NASDAQ NATR Fri, Mar 27, 1992 6.25 6.50 6.25 6.38
410 NASDAQ NATR Thu, Mar 26, 1992 6.63 6.63 6.25 6.25
409 NASDAQ NATR Wed, Mar 25, 1992 6.25 6.63 6.25 6.63
408 NASDAQ NATR Tue, Mar 24, 1992 6.25 6.63 6.25 6.50
407 NASDAQ NATR Mon, Mar 23, 1992 6.63 6.63 6.25 6.63
406 NASDAQ NATR Fri, Mar 20, 1992 6.25 6.44 6.25 6.25
405 NASDAQ NATR Thu, Mar 19, 1992 6.50 6.63 6.25 6.25
404 NASDAQ NATR Wed, Mar 18, 1992 6.50 6.63 6.25 6.56
403 NASDAQ NATR Tue, Mar 17, 1992 6.63 6.63 6.50 6.63
402 NASDAQ NATR Mon, Mar 16, 1992 6.25 6.63 6.25 6.63
401 NASDAQ NATR Fri, Mar 13, 1992 6.63 6.63 6.38 6.63
400 NASDAQ NATR Thu, Mar 12, 1992 6.63 6.63 6.38 6.38
399 NASDAQ NATR Wed, Mar 11, 1992 6.38 6.63 6.38 6.63
398 NASDAQ NATR Tue, Mar 10, 1992 6.50 6.75 6.38 6.38
397 NASDAQ NATR Mon, Mar 9, 1992 6.75 6.75 6.38 6.50
396 NASDAQ NATR Fri, Mar 6, 1992 6.63 7.00 6.38 6.75
395 NASDAQ NATR Thu, Mar 5, 1992 6.75 7.00 6.75 6.75
394 NASDAQ NATR Wed, Mar 4, 1992 7.13 7.13 6.75 7.00
393 NASDAQ NATR Tue, Mar 3, 1992 7.25 7.25 6.75 7.00
392 NASDAQ NATR Mon, Mar 2, 1992 7.00 7.25 6.63 7.25
391 NASDAQ NATR Fri, Feb 28, 1992 6.75 6.75 6.63 6.75
390 NASDAQ NATR Thu, Feb 27, 1992 6.42 6.75 6.42 6.75
389 NASDAQ NATR Wed, Feb 26, 1992 6.33 6.67 6.33 6.42
388 NASDAQ NATR Tue, Feb 25, 1992 6.67 6.67 6.33 6.67
387 NASDAQ NATR Mon, Feb 24, 1992 6.33 6.67 6.33 6.33
386 NASDAQ NATR Fri, Feb 21, 1992 6.58 6.67 6.33 6.58
385 NASDAQ NATR Thu, Feb 20, 1992 6.58 6.67 6.25 6.33
384 NASDAQ NATR Wed, Feb 19, 1992 6.67 6.67 6.25 6.58
383 NASDAQ NATR Tue, Feb 18, 1992 6.67 6.67 6.42 6.67
382 NASDAQ NATR Fri, Feb 14, 1992 6.67 6.67 6.42 6.67
381 NASDAQ NATR Thu, Feb 13, 1992 6.42 6.67 6.42 6.67
380 NASDAQ NATR Wed, Feb 12, 1992 6.67 6.67 6.42 6.58
379 NASDAQ NATR Tue, Feb 11, 1992 6.75 6.75 6.50 6.50
378 NASDAQ NATR Mon, Feb 10, 1992 6.42 6.75 6.42 6.75
377 NASDAQ NATR Fri, Feb 7, 1992 6.33 6.75 6.33 6.71
376 NASDAQ NATR Thu, Feb 6, 1992 6.92 6.92 6.42 6.67
375 NASDAQ NATR Wed, Feb 5, 1992 6.83 7.25 6.75 6.75
374 NASDAQ NATR Tue, Feb 4, 1992 7.58 7.58 6.92 6.92
373 NASDAQ NATR Mon, Feb 3, 1992 7.67 7.67 7.00 7.58
372 NASDAQ NATR Fri, Jan 31, 1992 7.75 7.92 7.42 7.58
371 NASDAQ NATR Thu, Jan 30, 1992 7.00 7.58 7.00 7.58
370 NASDAQ NATR Wed, Jan 29, 1992 7.00 7.08 6.67 7.08
369 NASDAQ NATR Tue, Jan 28, 1992 6.67 7.00 6.67 7.00
368 NASDAQ NATR Mon, Jan 27, 1992 7.00 7.00 6.67 7.00
367 NASDAQ NATR Fri, Jan 24, 1992 6.83 6.92 6.50 6.67
366 NASDAQ NATR Thu, Jan 23, 1992 6.83 6.83 6.50 6.63
365 NASDAQ NATR Wed, Jan 22, 1992 6.58 6.83 6.50 6.83
364 NASDAQ NATR Tue, Jan 21, 1992 6.92 7.33 6.50 6.50
363 NASDAQ NATR Mon, Jan 20, 1992 6.92 7.33 6.92 7.00
362 NASDAQ NATR Fri, Jan 17, 1992 7.08 7.17 6.75 7.00
361 NASDAQ NATR Thu, Jan 16, 1992 6.67 7.00 6.67 6.71
360 NASDAQ NATR Wed, Jan 15, 1992 6.67 7.00 6.58 7.00
359 NASDAQ NATR Tue, Jan 14, 1992 6.75 6.92 6.33 6.92
358 NASDAQ NATR Mon, Jan 13, 1992 6.33 6.75 6.33 6.75
357 NASDAQ NATR Fri, Jan 10, 1992 6.25 6.67 6.25 6.58
356 NASDAQ NATR Thu, Jan 9, 1992 6.33 6.67 6.25 6.33
355 NASDAQ NATR Wed, Jan 8, 1992 6.17 6.33 6.17 6.33
354 NASDAQ NATR Tue, Jan 7, 1992 6.58 6.58 6.17 6.17
353 NASDAQ NATR Mon, Jan 6, 1992 6.58 6.58 6.17 6.58
352 NASDAQ NATR Fri, Jan 3, 1992 5.92 6.50 5.92 6.50
351 NASDAQ NATR Thu, Jan 2, 1992 6.00 6.25 5.92 5.92
350 NASDAQ NATR Tue, Dec 31, 1991 6.17 6.17 5.83 6.08
349 NASDAQ NATR Mon, Dec 30, 1991 6.00 6.25 5.92 6.08
348 NASDAQ NATR Fri, Dec 27, 1991 6.17 6.25 5.83 6.13
347 NASDAQ NATR Thu, Dec 26, 1991 6.08 6.17 5.96 6.17
346 NASDAQ NATR Tue, Dec 24, 1991 5.92 5.92 5.88 5.92
345 NASDAQ NATR Mon, Dec 23, 1991 6.08 6.08 5.75 5.92
344 NASDAQ NATR Fri, Dec 20, 1991 6.17 6.17 5.75 6.00
343 NASDAQ NATR Thu, Dec 19, 1991 6.17 6.17 5.83 6.17
342 NASDAQ NATR Wed, Dec 18, 1991 6.25 6.42 6.25 6.42
341 NASDAQ NATR Tue, Dec 17, 1991 6.17 6.67 6.17 6.17
340 NASDAQ NATR Mon, Dec 16, 1991 6.17 6.33 6.00 6.33
339 NASDAQ NATR Fri, Dec 13, 1991 5.83 6.17 5.83 6.00
338 NASDAQ NATR Thu, Dec 12, 1991 5.83 6.17 5.67 5.83
337 NASDAQ NATR Wed, Dec 11, 1991 5.67 5.83 5.67 5.83
336 NASDAQ NATR Tue, Dec 10, 1991 5.42 5.58 5.42 5.58
335 NASDAQ NATR Mon, Dec 9, 1991 5.75 5.75 5.42 5.42
334 NASDAQ NATR Fri, Dec 6, 1991 5.42 5.67 5.42 5.67
333 NASDAQ NATR Thu, Dec 5, 1991 5.42 5.67 5.42 5.50
332 NASDAQ NATR Wed, Dec 4, 1991 5.50 5.67 5.50 5.67
331 NASDAQ NATR Tue, Dec 3, 1991 5.50 5.58 5.33 5.50
330 NASDAQ NATR Mon, Dec 2, 1991 5.25 5.50 5.25 5.33
329 NASDAQ NATR Fri, Nov 29, 1991 5.25 5.50 5.25 5.50
328 NASDAQ NATR Wed, Nov 27, 1991 5.25 5.58 5.25 5.33
327 NASDAQ NATR Tue, Nov 26, 1991 5.67 5.83 5.25 5.25
326 NASDAQ NATR Mon, Nov 25, 1991 5.92 5.92 5.67 5.67
325 NASDAQ NATR Fri, Nov 22, 1991 5.67 5.67 5.67 5.67
324 NASDAQ NATR Thu, Nov 21, 1991 5.92 5.92 5.67 5.75
323 NASDAQ NATR Wed, Nov 20, 1991 5.67 5.75 5.67 5.75
322 NASDAQ NATR Tue, Nov 19, 1991 5.96 5.96 5.50 5.75
321 NASDAQ NATR Mon, Nov 18, 1991 6.17 6.17 5.83 6.08
320 NASDAQ NATR Fri, Nov 15, 1991 6.00 6.29 6.00 6.17
319 NASDAQ NATR Thu, Nov 14, 1991 6.17 6.33 6.00 6.08
318 NASDAQ NATR Wed, Nov 13, 1991 6.17 6.17 5.92 6.17
317 NASDAQ NATR Tue, Nov 12, 1991 6.17 6.17 5.92 6.17
316 NASDAQ NATR Mon, Nov 11, 1991 6.25 6.25 5.92 6.17
315 NASDAQ NATR Fri, Nov 8, 1991 6.67 6.67 6.04 6.25
314 NASDAQ NATR Thu, Nov 7, 1991 6.67 6.67 6.42 6.42
313 NASDAQ NATR Wed, Nov 6, 1991 6.42 6.58 6.17 6.46
312 NASDAQ NATR Tue, Nov 5, 1991 6.33 6.58 6.25 6.33
311 NASDAQ NATR Mon, Nov 4, 1991 5.50 6.33 5.50 6.33
310 NASDAQ NATR Fri, Nov 1, 1991 5.54 5.58 5.42 5.50
309 NASDAQ NATR Thu, Oct 31, 1991 5.42 5.58 5.42 5.58
308 NASDAQ NATR Wed, Oct 30, 1991 5.42 5.58 5.42 5.50
307 NASDAQ NATR Tue, Oct 29, 1991 5.42 5.58 5.42 5.58
306 NASDAQ NATR Mon, Oct 28, 1991 5.58 5.58 5.42 5.42
305 NASDAQ NATR Fri, Oct 25, 1991 5.42 5.58 5.42 5.46
304 NASDAQ NATR Thu, Oct 24, 1991 5.58 5.58 5.42 5.58
303 NASDAQ NATR Wed, Oct 23, 1991 5.50 5.67 5.33 5.54
302 NASDAQ NATR Tue, Oct 22, 1991 5.50 5.50 5.17 5.50
301 NASDAQ NATR Mon, Oct 21, 1991 5.17 5.29 5.17 5.29
300 NASDAQ NATR Fri, Oct 18, 1991 5.17 5.42 5.17 5.25
299 NASDAQ NATR Thu, Oct 17, 1991 5.42 5.42 5.17 5.21
298 NASDAQ NATR Wed, Oct 16, 1991 5.42 5.42 5.42 5.42
297 NASDAQ NATR Tue, Oct 15, 1991 5.17 5.17 5.17 5.17
296 NASDAQ NATR Mon, Oct 14, 1991 5.29 5.29 5.25 5.25
295 NASDAQ NATR Fri, Oct 11, 1991 5.17 5.42 5.17 5.17
294 NASDAQ NATR Thu, Oct 10, 1991 5.58 5.58 5.33 5.42
293 NASDAQ NATR Wed, Oct 9, 1991 5.33 5.58 5.33 5.46
292 NASDAQ NATR Tue, Oct 8, 1991 5.25 5.29 5.25 5.29
291 NASDAQ NATR Mon, Oct 7, 1991 5.17 5.33 5.17 5.25
290 NASDAQ NATR Fri, Oct 4, 1991 5.25 5.29 5.17 5.29
289 NASDAQ NATR Thu, Oct 3, 1991 5.08 5.08 5.08 5.08
288 NASDAQ NATR Wed, Oct 2, 1991 5.08 5.17 5.08 5.08
287 NASDAQ NATR Tue, Oct 1, 1991 5.25 5.25 5.25 5.25
286 NASDAQ NATR Mon, Sep 30, 1991 5.25 5.25 5.08 5.25
285 NASDAQ NATR Fri, Sep 27, 1991 5.25 5.25 5.08 5.17
284 NASDAQ NATR Thu, Sep 26, 1991 5.08 5.25 5.08 5.25
283 NASDAQ NATR Wed, Sep 25, 1991 5.08 5.25 5.08 5.25
282 NASDAQ NATR Tue, Sep 24, 1991 5.08 5.08 5.08 5.08
281 NASDAQ NATR Mon, Sep 23, 1991 5.13 5.13 5.08 5.08
280 NASDAQ NATR Fri, Sep 20, 1991 5.17 5.25 5.17 5.17
279 NASDAQ NATR Thu, Sep 19, 1991 5.17 5.25 5.17 5.17
278 NASDAQ NATR Wed, Sep 18, 1991 5.17 5.21 5.17 5.21
277 NASDAQ NATR Tue, Sep 17, 1991 5.17 5.29 5.17 5.29
276 NASDAQ NATR Mon, Sep 16, 1991 5.17 5.33 5.17 5.33
275 NASDAQ NATR Fri, Sep 13, 1991 5.17 5.33 5.17 5.33
274 NASDAQ NATR Thu, Sep 12, 1991 5.17 5.42 5.17 5.25
273 NASDAQ NATR Wed, Sep 11, 1991 5.17 5.25 5.08 5.25
272 NASDAQ NATR Tue, Sep 10, 1991 5.08 5.21 5.08 5.08
271 NASDAQ NATR Mon, Sep 9, 1991 5.08 5.08 5.08 5.08
270 NASDAQ NATR Fri, Sep 6, 1991 5.08 5.17 5.08 5.08
269 NASDAQ NATR Thu, Sep 5, 1991 5.17 5.17 5.17 5.17
268 NASDAQ NATR Wed, Sep 4, 1991 5.00 5.13 5.00 5.00
267 NASDAQ NATR Tue, Sep 3, 1991 5.00 5.00 5.00 5.00
266 NASDAQ NATR Thu, Aug 29, 1991 5.08 5.25 5.08 5.17
265 NASDAQ NATR Wed, Aug 28, 1991 5.33 5.33 5.08 5.08
264 NASDAQ NATR Tue, Aug 27, 1991 5.00 5.25 5.00 5.17
263 NASDAQ NATR Mon, Aug 26, 1991 4.83 5.08 4.83 5.00
262 NASDAQ NATR Fri, Aug 23, 1991 5.00 5.00 4.83 4.92
261 NASDAQ NATR Thu, Aug 22, 1991 4.92 5.08 4.75 4.75
260 NASDAQ NATR Wed, Aug 21, 1991 4.67 4.83 4.67 4.75
259 NASDAQ NATR Tue, Aug 20, 1991 4.75 4.75 4.67 4.75
258 NASDAQ NATR Mon, Aug 19, 1991 4.67 4.67 4.42 4.58
257 NASDAQ NATR Fri, Aug 16, 1991 5.17 5.17 4.75 4.88
256 NASDAQ NATR Thu, Aug 15, 1991 5.00 5.17 5.00 5.00
255 NASDAQ NATR Wed, Aug 14, 1991 5.00 5.25 5.00 5.00
254 NASDAQ NATR Tue, Aug 13, 1991 4.88 5.25 4.88 5.08
253 NASDAQ NATR Mon, Aug 12, 1991 4.75 4.75 4.75 4.75
252 NASDAQ NATR Fri, Aug 9, 1991 4.88 5.00 4.75 4.75
251 NASDAQ NATR Thu, Aug 8, 1991 5.08 5.08 4.75 4.75
250 NASDAQ NATR Wed, Aug 7, 1991 5.08 5.08 4.75 5.08
249 NASDAQ NATR Tue, Aug 6, 1991 4.75 4.92 4.75 4.92
248 NASDAQ NATR Mon, Aug 5, 1991 5.08 5.08 4.75 4.75
247 NASDAQ NATR Fri, Aug 2, 1991 5.00 5.08 4.75 5.08
246 NASDAQ NATR Thu, Aug 1, 1991 5.25 5.25 5.25 5.25
245 NASDAQ NATR Wed, Jul 31, 1991 5.00 5.17 5.00 5.17
244 NASDAQ NATR Tue, Jul 30, 1991 5.08 5.08 5.00 5.00
243 NASDAQ NATR Mon, Jul 29, 1991 4.92 5.08 4.92 4.92
242 NASDAQ NATR Fri, Jul 26, 1991 5.08 5.08 5.08 5.08
241 NASDAQ NATR Thu, Jul 25, 1991 4.92 5.08 4.92 5.00
240 NASDAQ NATR Wed, Jul 24, 1991 5.08 5.08 5.00 5.00
239 NASDAQ NATR Tue, Jul 23, 1991 5.08 5.08 5.08 5.08
238 NASDAQ NATR Mon, Jul 22, 1991 5.17 5.17 5.17 5.17
237 NASDAQ NATR Fri, Jul 19, 1991 5.42 5.42 5.17 5.17
236 NASDAQ NATR Thu, Jul 18, 1991 5.67 5.67 5.42 5.42
235 NASDAQ NATR Wed, Jul 17, 1991 5.42 5.67 5.42 5.46
234 NASDAQ NATR Tue, Jul 16, 1991 5.58 5.67 5.42 5.42
233 NASDAQ NATR Mon, Jul 15, 1991 5.67 5.67 5.42 5.67
232 NASDAQ NATR Fri, Jul 12, 1991 5.67 5.67 5.42 5.67
231 NASDAQ NATR Thu, Jul 11, 1991 5.67 5.67 5.42 5.58
230 NASDAQ NATR Wed, Jul 10, 1991 5.42 5.67 5.42 5.50
229 NASDAQ NATR Tue, Jul 9, 1991 5.17 5.67 5.17 5.42
228 NASDAQ NATR Mon, Jul 8, 1991 5.00 5.33 5.00 5.17
227 NASDAQ NATR Fri, Jul 5, 1991 5.13 5.25 5.08 5.25
226 NASDAQ NATR Wed, Jul 3, 1991 4.92 5.25 4.92 5.13
225 NASDAQ NATR Tue, Jul 2, 1991 4.92 5.17 4.92 5.17
224 NASDAQ NATR Mon, Jul 1, 1991 4.92 5.17 4.67 4.92
223 NASDAQ NATR Fri, Jun 28, 1991 4.58 4.75 4.58 4.75
222 NASDAQ NATR Thu, Jun 27, 1991 4.33 4.58 4.25 4.58
221 NASDAQ NATR Wed, Jun 26, 1991 4.17 4.33 4.17 4.29
220 NASDAQ NATR Tue, Jun 25, 1991 4.25 4.42 4.17 4.25
219 NASDAQ NATR Mon, Jun 24, 1991 4.33 4.33 4.17 4.33
218 NASDAQ NATR Fri, Jun 21, 1991 4.25 4.33 4.17 4.33
217 NASDAQ NATR Thu, Jun 20, 1991 4.25 4.25 3.92 4.25
216 NASDAQ NATR Wed, Jun 19, 1991 4.50 4.50 4.25 4.25
215 NASDAQ NATR Tue, Jun 18, 1991 4.50 4.67 4.50 4.54
214 NASDAQ NATR Mon, Jun 17, 1991 4.75 4.75 4.50 4.67
213 NASDAQ NATR Fri, Jun 14, 1991 4.58 4.75 4.50 4.75
212 NASDAQ NATR Thu, Jun 13, 1991 4.67 4.83 4.67 4.83
211 NASDAQ NATR Wed, Jun 12, 1991 4.67 4.92 4.67 4.92
210 NASDAQ NATR Tue, Jun 11, 1991 4.75 4.92 4.67 4.92
209 NASDAQ NATR Mon, Jun 10, 1991 4.75 4.83 4.75 4.75
208 NASDAQ NATR Fri, Jun 7, 1991 4.75 4.75 4.75 4.75
207 NASDAQ NATR Thu, Jun 6, 1991 4.58 4.92 4.58 4.83
206 NASDAQ NATR Wed, Jun 5, 1991 4.67 4.88 4.67 4.88
205 NASDAQ NATR Tue, Jun 4, 1991 4.75 4.83 4.67 4.67
204 NASDAQ NATR Mon, Jun 3, 1991 4.92 4.92 4.75 4.75
203 NASDAQ NATR Fri, May 31, 1991 4.75 4.92 4.75 4.92
202 NASDAQ NATR Thu, May 30, 1991 4.83 5.08 4.75 4.75
201 NASDAQ NATR Wed, May 29, 1991 4.75 4.92 4.75 4.75
200 NASDAQ NATR Tue, May 28, 1991 4.75 4.92 4.75 4.75
199 NASDAQ NATR Fri, May 24, 1991 4.75 4.75 4.75 4.75
198 NASDAQ NATR Thu, May 23, 1991 4.75 5.00 4.75 4.83
197 NASDAQ NATR Wed, May 22, 1991 4.92 5.00 4.58 5.00
196 NASDAQ NATR Tue, May 21, 1991 4.58 4.83 4.58 4.58
195 NASDAQ NATR Mon, May 20, 1991 4.83 5.00 4.58 4.67
194 NASDAQ NATR Fri, May 17, 1991 4.83 5.08 4.83 4.83
193 NASDAQ NATR Thu, May 16, 1991 4.83 5.08 4.83 5.00
192 NASDAQ NATR Wed, May 15, 1991 5.08 5.08 4.92 4.96
191 NASDAQ NATR Tue, May 14, 1991 5.25 5.25 5.00 5.00
190 NASDAQ NATR Mon, May 13, 1991 5.08 5.25 4.92 5.08
189 NASDAQ NATR Fri, May 10, 1991 5.00 5.25 4.92 4.92
188 NASDAQ NATR Thu, May 9, 1991 5.00 5.08 4.92 5.08
187 NASDAQ NATR Wed, May 8, 1991 5.08 5.08 4.92 4.96
186 NASDAQ NATR Tue, May 7, 1991 5.00 5.25 4.92 5.04
185 NASDAQ NATR Mon, May 6, 1991 5.17 5.42 4.83 4.92
184 NASDAQ NATR Fri, May 3, 1991 5.42 5.58 5.17 5.25
183 NASDAQ NATR Thu, May 2, 1991 4.67 5.50 4.58 5.17
182 NASDAQ NATR Wed, May 1, 1991 4.50 4.58 4.42 4.58
181 NASDAQ NATR Tue, Apr 30, 1991 4.33 4.58 4.33 4.33
180 NASDAQ NATR Mon, Apr 29, 1991 4.25 4.50 4.25 4.33
179 NASDAQ NATR Fri, Apr 26, 1991 4.42 4.42 4.08 4.33
178 NASDAQ NATR Thu, Apr 25, 1991 4.00 4.25 3.92 4.25
177 NASDAQ NATR Wed, Apr 24, 1991 3.79 4.04 3.75 3.96
176 NASDAQ NATR Tue, Apr 23, 1991 3.92 3.92 3.67 3.67
175 NASDAQ NATR Mon, Apr 22, 1991 3.92 4.17 3.75 3.92
174 NASDAQ NATR Fri, Apr 19, 1991 4.17 4.33 4.08 4.08
173 NASDAQ NATR Thu, Apr 18, 1991 4.33 4.58 4.33 4.33
172 NASDAQ NATR Wed, Apr 17, 1991 4.25 4.58 4.25 4.50
171 NASDAQ NATR Tue, Apr 16, 1991 4.25 4.42 4.25 4.25
170 NASDAQ NATR Mon, Apr 15, 1991 4.42 4.50 4.25 4.50
169 NASDAQ NATR Fri, Apr 12, 1991 4.33 4.42 4.25 4.25
168 NASDAQ NATR Thu, Apr 11, 1991 4.08 4.33 4.08 4.29
167 NASDAQ NATR Wed, Apr 10, 1991 3.92 4.17 3.92 4.17
166 NASDAQ NATR Tue, Apr 9, 1991 3.92 4.17 3.92 4.17
165 NASDAQ NATR Mon, Apr 8, 1991 3.92 4.13 3.92 3.92
164 NASDAQ NATR Fri, Apr 5, 1991 4.08 4.17 3.92 4.08
163 NASDAQ NATR Thu, Apr 4, 1991 4.17 4.17 4.17 4.17
162 NASDAQ NATR Wed, Apr 3, 1991 4.17 4.17 3.92 4.17
161 NASDAQ NATR Tue, Apr 2, 1991 4.00 4.17 4.00 4.17
160 NASDAQ NATR Mon, Apr 1, 1991 4.08 4.17 4.08 4.08
159 NASDAQ NATR Thu, Mar 28, 1991 4.17 4.17 4.00 4.08
158 NASDAQ NATR Wed, Mar 27, 1991 4.17 4.17 4.08 4.08
157 NASDAQ NATR Tue, Mar 26, 1991 4.04 4.17 4.00 4.17
156 NASDAQ NATR Mon, Mar 25, 1991 4.17 4.17 3.92 3.92
155 NASDAQ NATR Fri, Mar 22, 1991 4.17 4.17 3.92 4.17
154 NASDAQ NATR Thu, Mar 21, 1991 3.92 4.08 3.92 3.92
153 NASDAQ NATR Wed, Mar 20, 1991 3.83 3.83 3.83 3.83
152 NASDAQ NATR Tue, Mar 19, 1991 3.92 4.08 3.92 3.96
151 NASDAQ NATR Mon, Mar 18, 1991 4.00 4.17 3.92 3.92
150 NASDAQ NATR Fri, Mar 15, 1991 4.00 4.04 4.00 4.04
149 NASDAQ NATR Thu, Mar 14, 1991 4.17 4.17 4.00 4.00
148 NASDAQ NATR Wed, Mar 13, 1991 4.00 4.08 4.00 4.08
147 NASDAQ NATR Tue, Mar 12, 1991 4.08 4.25 4.00 4.08
146 NASDAQ NATR Mon, Mar 11, 1991 4.25 4.25 4.08 4.08
145 NASDAQ NATR Fri, Mar 8, 1991 4.17 4.25 4.08 4.08
144 NASDAQ NATR Thu, Mar 7, 1991 4.33 4.33 4.17 4.17
143 NASDAQ NATR Wed, Mar 6, 1991 4.25 4.33 4.17 4.33
142 NASDAQ NATR Tue, Mar 5, 1991 4.00 4.33 4.00 4.08
141 NASDAQ NATR Mon, Mar 4, 1991 4.08 4.17 3.83 4.08
140 NASDAQ NATR Fri, Mar 1, 1991 3.83 4.00 3.83 3.92
139 NASDAQ NATR Thu, Feb 28, 1991 3.83 3.92 3.75 3.92
138 NASDAQ NATR Wed, Feb 27, 1991 3.67 3.83 3.67 3.71
137 NASDAQ NATR Tue, Feb 26, 1991 3.67 3.75 3.67 3.67
136 NASDAQ NATR Mon, Feb 25, 1991 3.67 3.83 3.67 3.79
135 NASDAQ NATR Fri, Feb 22, 1991 3.83 3.83 3.67 3.67
134 NASDAQ NATR Thu, Feb 21, 1991 3.67 3.79 3.67 3.79
133 NASDAQ NATR Wed, Feb 20, 1991 3.67 3.83 3.67 3.79
132 NASDAQ NATR Tue, Feb 19, 1991 3.92 3.92 3.75 3.75
131 NASDAQ NATR Fri, Feb 15, 1991 3.92 4.00 3.67 3.71
130 NASDAQ NATR Thu, Feb 14, 1991 3.83 3.96 3.75 3.92
129 NASDAQ NATR Wed, Feb 13, 1991 3.83 3.83 3.67 3.67
128 NASDAQ NATR Tue, Feb 12, 1991 3.83 3.83 3.67 3.83
127 NASDAQ NATR Mon, Feb 11, 1991 3.75 3.83 3.58 3.83
126 NASDAQ NATR Fri, Feb 8, 1991 3.50 3.67 3.50 3.67
125 NASDAQ NATR Thu, Feb 7, 1991 3.50 3.75 3.50 3.67
124 NASDAQ NATR Wed, Feb 6, 1991 3.75 3.92 3.54 3.54
123 NASDAQ NATR Tue, Feb 5, 1991 3.92 4.08 3.75 3.75
122 NASDAQ NATR Mon, Feb 4, 1991 4.00 4.08 3.92 4.00
121 NASDAQ NATR Fri, Feb 1, 1991 4.13 4.17 4.04 4.04
120 NASDAQ NATR Thu, Jan 31, 1991 3.75 4.17 3.75 4.08
119 NASDAQ NATR Wed, Jan 30, 1991 3.67 3.92 3.67 3.92
118 NASDAQ NATR Tue, Jan 29, 1991 3.75 3.75 3.58 3.75
117 NASDAQ NATR Mon, Jan 28, 1991 3.50 3.71 3.50 3.71
116 NASDAQ NATR Fri, Jan 25, 1991 3.50 3.67 3.42 3.58
115 NASDAQ NATR Thu, Jan 24, 1991 3.42 3.42 3.25 3.25
114 NASDAQ NATR Wed, Jan 23, 1991 3.25 3.42 3.25 3.42
113 NASDAQ NATR Tue, Jan 22, 1991 3.08 3.38 3.08 3.33
112 NASDAQ NATR Mon, Jan 21, 1991 3.08 3.17 3.08 3.17
111 NASDAQ NATR Fri, Jan 18, 1991 3.17 3.25 3.08 3.08
110 NASDAQ NATR Thu, Jan 17, 1991 3.17 3.25 3.04 3.08
109 NASDAQ NATR Wed, Jan 16, 1991 3.04 3.08 3.04 3.04
108 NASDAQ NATR Tue, Jan 15, 1991 3.00 3.17 3.00 3.00
107 NASDAQ NATR Mon, Jan 14, 1991 3.08 3.08 3.00 3.00
106 NASDAQ NATR Fri, Jan 11, 1991 3.08 3.25 3.08 3.08
105 NASDAQ NATR Thu, Jan 10, 1991 3.08 3.21 3.00 3.08
104 NASDAQ NATR Wed, Jan 9, 1991 3.17 3.33 3.08 3.08
103 NASDAQ NATR Tue, Jan 8, 1991 2.79 3.17 2.79 3.17
102 NASDAQ NATR Mon, Jan 7, 1991 2.83 2.83 2.67 2.79
101 NASDAQ NATR Fri, Jan 4, 1991 2.75 2.83 2.75 2.79
100 NASDAQ NATR Thu, Jan 3, 1991 2.67 2.92 2.67 2.75
99 NASDAQ NATR Wed, Jan 2, 1991 2.50 2.58 2.50 2.50
98 NASDAQ NATR Mon, Dec 31, 1990 2.42 2.42 2.33 2.33
97 NASDAQ NATR Fri, Dec 28, 1990 2.38 2.42 2.33 2.33
96 NASDAQ NATR Thu, Dec 27, 1990 2.33 2.42 2.33 2.33
95 NASDAQ NATR Wed, Dec 26, 1990 2.42 2.42 2.25 2.38
94 NASDAQ NATR Mon, Dec 24, 1990 2.33 2.33 2.33 2.33
93 NASDAQ NATR Fri, Dec 21, 1990 2.33 2.33 2.33 2.33
92 NASDAQ NATR Thu, Dec 20, 1990 2.25 2.42 2.25 2.33
91 NASDAQ NATR Wed, Dec 19, 1990 2.25 2.25 2.25 2.25
90 NASDAQ NATR Tue, Dec 18, 1990 2.33 2.42 2.25 2.42
89 NASDAQ NATR Mon, Dec 17, 1990 2.42 2.42 2.21 2.25
88 NASDAQ NATR Fri, Dec 14, 1990 2.29 2.33 2.21 2.21
87 NASDAQ NATR Thu, Dec 13, 1990 2.33 2.42 2.29 2.42
86 NASDAQ NATR Wed, Dec 12, 1990 2.33 2.42 2.33 2.33
85 NASDAQ NATR Tue, Dec 11, 1990 2.50 2.50 2.33 2.33
84 NASDAQ NATR Mon, Dec 10, 1990 2.33 2.50 2.33 2.33
83 NASDAQ NATR Fri, Dec 7, 1990 2.33 2.46 2.33 2.33
82 NASDAQ NATR Thu, Dec 6, 1990 2.67 2.67 2.42 2.42
81 NASDAQ NATR Wed, Dec 5, 1990 2.54 2.54 2.42 2.42
80 NASDAQ NATR Tue, Dec 4, 1990 2.54 2.54 2.42 2.42
79 NASDAQ NATR Mon, Dec 3, 1990 2.21 2.50 2.21 2.42
78 NASDAQ NATR Fri, Nov 30, 1990 2.21 2.21 2.08 2.21
77 NASDAQ NATR Wed, Nov 28, 1990 2.08 2.17 2.08 2.13
76 NASDAQ NATR Tue, Nov 27, 1990 2.08 2.08 2.08 2.08
75 NASDAQ NATR Mon, Nov 26, 1990 2.08 2.17 2.08 2.08
74 NASDAQ NATR Fri, Nov 23, 1990 2.13 2.21 2.04 2.13
73 NASDAQ NATR Wed, Nov 21, 1990 2.00 2.13 2.00 2.13
72 NASDAQ NATR Tue, Nov 20, 1990 2.00 2.13 2.00 2.13
71 NASDAQ NATR Mon, Nov 19, 1990 2.17 2.17 2.13 2.13
70 NASDAQ NATR Fri, Nov 16, 1990 2.21 2.21 2.17 2.17
69 NASDAQ NATR Thu, Nov 15, 1990 2.21 2.21 2.21 2.21
68 NASDAQ NATR Wed, Nov 14, 1990 2.13 2.21 2.08 2.21
67 NASDAQ NATR Tue, Nov 13, 1990 2.29 2.29 2.13 2.13
66 NASDAQ NATR Mon, Nov 12, 1990 2.17 2.17 2.17 2.17
65 NASDAQ NATR Fri, Nov 9, 1990 2.25 2.25 2.13 2.13
64 NASDAQ NATR Thu, Nov 8, 1990 2.21 2.21 2.21 2.21
63 NASDAQ NATR Wed, Nov 7, 1990 2.21 2.21 2.21 2.21
62 NASDAQ NATR Tue, Nov 6, 1990 2.13 2.25 2.13 2.25
61 NASDAQ NATR Mon, Nov 5, 1990 2.08 2.25 2.08 2.25
60 NASDAQ NATR Fri, Nov 2, 1990 2.17 2.17 2.04 2.17
59 NASDAQ NATR Thu, Nov 1, 1990 2.08 2.17 2.08 2.17
58 NASDAQ NATR Wed, Oct 31, 1990 2.25 2.25 2.17 2.17
57 NASDAQ NATR Tue, Oct 30, 1990 2.13 2.25 2.13 2.13
56 NASDAQ NATR Mon, Oct 29, 1990 2.13 2.21 2.13 2.17
55 NASDAQ NATR Fri, Oct 26, 1990 2.21 2.38 2.17 2.17
54 NASDAQ NATR Thu, Oct 25, 1990 2.33 2.33 2.17 2.21
53 NASDAQ NATR Wed, Oct 24, 1990 2.17 2.17 2.17 2.17
52 NASDAQ NATR Tue, Oct 23, 1990 2.33 2.33 2.21 2.33
51 NASDAQ NATR Mon, Oct 22, 1990 2.25 2.33 2.08 2.21
50 NASDAQ NATR Fri, Oct 19, 1990 2.38 2.42 2.08 2.25
49 NASDAQ NATR Thu, Oct 18, 1990 2.33 2.33 2.17 2.33
48 NASDAQ NATR Wed, Oct 17, 1990 2.17 2.17 2.17 2.17
47 NASDAQ NATR Tue, Oct 16, 1990 2.25 2.33 2.17 2.17
46 NASDAQ NATR Mon, Oct 15, 1990 2.33 2.46 2.25 2.25
45 NASDAQ NATR Fri, Oct 12, 1990 2.33 2.50 2.25 2.33
44 NASDAQ NATR Thu, Oct 11, 1990 2.63 2.71 2.33 2.33
43 NASDAQ NATR Wed, Oct 10, 1990 2.75 2.83 2.67 2.67
42 NASDAQ NATR Tue, Oct 9, 1990 2.88 2.92 2.83 2.92
41 NASDAQ NATR Mon, Oct 8, 1990 3.04 3.04 3.00 3.00
40 NASDAQ NATR Fri, Oct 5, 1990 3.13 3.13 3.00 3.00
39 NASDAQ NATR Thu, Oct 4, 1990 3.08 3.17 3.08 3.08
38 NASDAQ NATR Wed, Oct 3, 1990 3.25 3.25 3.08 3.08
37 NASDAQ NATR Tue, Oct 2, 1990 3.17 3.29 3.17 3.21
36 NASDAQ NATR Mon, Oct 1, 1990 3.00 3.17 3.00 3.13
35 NASDAQ NATR Fri, Sep 28, 1990 2.83 2.96 2.79 2.92
34 NASDAQ NATR Thu, Sep 27, 1990 2.92 3.04 2.83 3.00
33 NASDAQ NATR Wed, Sep 26, 1990 2.96 3.08 2.96 3.08
32 NASDAQ NATR Tue, Sep 25, 1990 2.96 3.04 2.96 2.96
31 NASDAQ NATR Mon, Sep 24, 1990 3.00 3.08 3.00 3.00
30 NASDAQ NATR Fri, Sep 21, 1990 3.00 3.17 3.00 3.00
29 NASDAQ NATR Thu, Sep 20, 1990 3.08 3.17 3.00 3.00
28 NASDAQ NATR Wed, Sep 19, 1990 3.17 3.17 3.04 3.04
27 NASDAQ NATR Tue, Sep 18, 1990 3.00 3.17 3.00 3.17
26 NASDAQ NATR Mon, Sep 17, 1990 3.17 3.17 3.00 3.08
25 NASDAQ NATR Fri, Sep 14, 1990 3.17 3.17 3.00 3.13
24 NASDAQ NATR Thu, Sep 13, 1990 3.21 3.21 3.04 3.04
23 NASDAQ NATR Wed, Sep 12, 1990 3.08 3.08 3.08 3.08
22 NASDAQ NATR Tue, Sep 11, 1990 3.08 3.17 3.08 3.08
21 NASDAQ NATR Mon, Sep 10, 1990 3.08 3.08 3.08 3.08
20 NASDAQ NATR Fri, Sep 7, 1990 3.25 3.25 3.08 3.17
19 NASDAQ NATR Thu, Sep 6, 1990 3.21 3.21 3.21 3.21
18 NASDAQ NATR Wed, Sep 5, 1990 3.38 3.38 3.25 3.25
17 NASDAQ NATR Tue, Sep 4, 1990 3.33 3.38 3.25 3.25
16 NASDAQ NATR Fri, Aug 31, 1990 3.29 3.38 3.29 3.29
15 NASDAQ NATR Thu, Aug 30, 1990 3.29 3.38 3.29 3.29
14 NASDAQ NATR Wed, Aug 29, 1990 3.21 3.38 3.21 3.29
13 NASDAQ NATR Tue, Aug 28, 1990 3.17 3.33 3.17 3.33
12 NASDAQ NATR Mon, Aug 27, 1990 3.38 3.42 3.29 3.42
11 NASDAQ NATR Fri, Aug 24, 1990 3.25 3.25 3.13 3.25
10 NASDAQ NATR Thu, Aug 23, 1990 3.21 3.25 3.00 3.08
9 NASDAQ NATR Wed, Aug 22, 1990 3.46 3.50 3.29 3.33
8 NASDAQ NATR Tue, Aug 21, 1990 3.50 3.50 3.42 3.50
7 NASDAQ NATR Mon, Aug 20, 1990 3.50 3.54 3.50 3.54
6 NASDAQ NATR Fri, Aug 17, 1990 3.67 3.67 3.50 3.63
5 NASDAQ NATR Thu, Aug 16, 1990 3.79 3.79 3.67 3.75
4 NASDAQ NATR Wed, Aug 15, 1990 3.75 3.79 3.67 3.79
3 NASDAQ NATR Tue, Aug 14, 1990 3.58 3.75 3.58 3.67
2 NASDAQ NATR Mon, Aug 13, 1990 3.58 3.58 3.46 3.58
1 NASDAQ NATR Fri, Aug 10, 1990 3.54 3.54 3.54 3.54
# Exchange Symbol Date Open High Low Close

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