1969 02 14.23   1.71   7.97 
1969 03 15.63   2.44   9.03 
1969 04 23.97  11.51  17.74 
1969 05 28.41  14.49  21.45 
1969 06 31.89  18.77  25.33 
1969 07 36.68  21.87  29.27 
1969 08 34.95  20.65  27.80 
1969 09 30.94  16.94  23.94 
1969 10 26.39  10.95  18.67 
1969 11 19.43   3.92  11.67 
1969 12 14.35    .91   7.63 
1970 01 10.22  -2.69   3.76 
1970 02 14.67    .46   7.56 
1970 03 16.58   5.19  10.88 
1970 04 24.91  12.15  18.52 
1970 05 28.10  14.96  21.53 
1970 06 30.81  19.02  24.91 
1970 07 32.18  19.90  26.04 
1970 08 33.12  20.96  27.04 
1970 09 30.68  19.08  24.88 
1970 10 23.49  10.21  16.85 
1970 11 17.98   3.08  10.53 
1970 12 16.93   4.05  10.49 
1971 01 15.44    .66   8.05 
1971 02 15.58    .78   8.18 
1971 03 18.49   3.14  10.81 
1971 04 23.82   9.05  16.43 
1971 05 26.24  13.55  19.89 
1971 06 33.41  19.90  26.66 
1971 07 32.87  21.47  27.16 
1971 08 30.86  19.94  25.40 
1971 09 29.93  18.37  24.15 
1971 10 26.81  13.00  19.90 
1971 11 19.92   4.58  12.25 
1971 12 16.51   5.52  11.01 
1972 01 13.67    .70   7.18 
1972 02 16.32   1.61   8.96 
1972 03 22.03   6.15  14.09 
1972 04 24.64  11.24  17.93 
1972 05 28.31  14.07  21.18 
1972 06 31.12  19.45  25.28 
1972 07 31.79  20.26  26.02 
1972 08 33.50  20.45  26.98 
1972 09 32.20  19.82  26.01 
1972 10 23.42  11.56  17.49 
1972 11 14.16   3.51   8.83 
1972 12 11.35   -.99   5.18 
1973 01 10.73  -1.20   4.76 
1973 02 14.34   1.34   7.84 
1973 03 20.25   7.55  13.90 
1973 04 20.97   9.46  15.21 
1973 05 27.19  13.67  20.43 
1973 06 30.42  18.96  24.69 
1973 07 32.86  21.15  27.00 
1973 08 32.73  19.28  26.00 
1973 09 29.53  19.17  24.35 
1973 10 26.04  13.72  19.88 
1973 11 20.76   9.14  14.95 
1973 12 15.16    .68   7.92 
1974 01 11.24   2.15   6.69 
1974 02 16.90   2.98   9.93 
1974 03 22.90   9.97  16.43 
1974 04 24.77   9.51  17.14 
1974 05 28.61  17.96  23.29 
1974 06 29.62  16.93  23.27 
1974 07 33.87  20.79  27.33 
1974 08 33.04  20.18  26.61 
1974 09 25.62  15.58  20.60 
1974 10 25.34  11.07  18.20 
1974 11 17.76   5.78  11.77 
1974 12 13.05   1.58   7.31 
1975 01 15.59   3.09   9.34 
1975 02 14.72   2.45   8.58 
1975 03 17.44   4.98  11.21 
1975 04 23.40  10.47  16.93 
1975 05 27.91  16.96  22.43 
1975 06 30.98  18.66  24.82 
1975 07 33.24  21.14  27.19 
1975 08 33.18  20.75  26.96 
1975 09 29.69  15.40  22.54 
1975 10 26.47  10.32  18.39 
1975 11 19.61   5.23  12.42 
1975 12 13.76   1.80   7.78 
1976 01 14.13   -.43   6.85 
1976 02 20.43   6.05  13.24 
1976 03 21.34 -99.99 -99.99 
1976 04 25.37  10.71  18.04 
1976 05 25.66  13.14  19.40 
1976 06 30.14  17.19  23.66 
1976 07 32.41  19.03  25.72 
1976 08 33.90  18.12  26.01 
1976 09 29.85 -99.99 -99.99 
1976 10 20.64   6.70  13.67 
1976 11 14.37   2.04   8.20 
1976 12 14.84   -.57   7.13 
1977 01  7.68  -4.40   1.63 
1977 02 16.61   1.45   9.03 
1977 03 20.89   6.21  13.54 
1977 04 25.21  12.32  18.76 
1977 05 29.34  16.75  23.04 
1977 06 33.23  19.98  26.60 
1977 07 35.36  22.00  28.68 
1977 08 33.57  21.55  27.56 
1977 09 32.93  19.71  26.32 
1977 10 27.30  10.01  18.65 
1977 11 20.34   6.85  13.59 
1977 12 13.75   -.77   6.49 
1978 01  5.01  -4.42    .29 
1978 02  8.71  -2.33   3.18 
1978 03 19.23   3.75  11.49 
1978 04 26.84  11.65  19.24 
1978 05 28.84  16.46  22.65 
1978 06 33.96  20.39  27.17 
1978 07 37.55  21.99  29.77 
1978 08 36.50  21.54  29.02 
1978 09 32.27  18.78  25.52 
1978 10 27.10  10.10  18.60 
1978 11 19.95   7.95  13.95 
1978 12 14.36    .65   7.50 
1979 01  5.71  -4.28    .71 
1979 02 10.72 -99.99 -99.99 
1979 03 20.95   6.71  13.83 
1979 04 24.44  11.15  17.79 
1979 05 27.80 -99.99 -99.99 
1979 06 30.79  18.77  24.78 
1979 07 33.08  21.61  27.34 
1979 08 32.68  20.71  26.69 
1979 09 29.09 -99.99 -99.99 
1979 10 27.02  10.60  18.81 
1979 11 18.70   3.28  10.99 
1979 12 99.99    .32 -99.99 
1980 01 13.50   3.45   8.47 
1980 02 13.07   -.83   6.12 
1980 03 99.99   4.73 -99.99 
