1970 08  24.11  11.64  17.87 
1970 09  13.85   3.16   8.50 
1970 10   7.14   0.52   3.83 
1970 11   -.23  -5.05  -2.64 
1970 12  -4.02  -9.81  -6.91 
1971 01  -1.38  -7.56  -4.46 
1971 02   -.99  -6.84  -3.91 
1971 03   0.15  -8.12  -3.98 
1971 04   6.93  -2.52   2.20 
1971 05  14.10   4.46   9.28 
1971 06  14.20   5.14   9.67 
1971 07  22.56   9.97  16.27 
1971 08  25.37  13.66  19.51 
1971 09  12.24   3.98   8.10 
1971 10   6.52  -1.46   2.53 
1971 11   -.12  -7.28  -3.70 
1971 12  -4.52 -15.65 -10.08 
1972 01  -5.97 -99.99 -99.99 
1972 03   5.91  -3.51   1.19 
1972 04   4.39  -5.14   -.37 
1972 05  14.48   3.75   9.11 
1972 06  15.41   5.37  10.39 
1972 07  20.20   7.90  14.05 
1972 08  22.88   9.42  16.15 
1972 09  11.85   2.20   7.02 
1972 10   9.41  -1.37   4.02 
1972 11  -0.09  -5.64  -2.86 
1972 12  -7.15 -14.01 -10.58 
1973 01 -99.99 -12.92 -99.99 
1973 02 -99.99  -6.89 -99.99 
1973 03   2.71  -5.70  -1.49 
1973 04   7.50  -2.50   2.50 
1973 05  13.51   2.62   8.06 
1973 06  16.08   5.32  10.70 
1973 07  23.21   9.30  16.25 
1973 08  22.22   9.14  15.68 
1973 09  16.45   4.59  10.52 
1973 10   6.68  -2.99   1.84 
1973 11  -1.64 -10.58  -6.11 
1973 12  -2.08 -11.86  -6.97 
1974 01  -4.53 -16.56 -10.54 
1974 02   -.91 -11.54  -6.22 
1974 03   1.38 -10.36  -4.48 
1974 04   7.09  -4.14   1.47 
1974 05   9.89  -4.00   2.94 
1974 06  20.36   4.61  12.48 
1974 07  20.34   5.34  12.84 
1974 08  21.77   6.05  13.91 
1974 09  18.87   4.84  11.85 
1974 10  11.87   0.34   6.10 
1974 11   0.74  -5.14  -2.19 
1974 12  -2.34  -8.25  -5.30 
1975 01  -5.31 -11.75  -8.53 
1975 02  -3.31 -10.93  -7.12 
1975 03  -0.02  -8.39  -4.20 
1975 04   6.16  -4.25   0.95 
1975 05  13.75   2.03   7.89 
1975 06 -99.99   4.09 -99.99 
1975 07  24.31  10.21  17.26 
1975 08  18.52   6.07  12.29 
1975 09  19.50   5.55  12.52 
1975 10   6.37  -1.87   2.25 
1975 11  -1.05  -6.61  -3.83 
1975 12  -2.36  -7.84  -5.10 
1976 01  -1.77  -9.14  -5.46 
1976 02  -1.65  -8.17  -4.91 
1976 03   0.22  -8.50  -4.14 
1976 04   6.59  -2.33   2.13 
1976 05  12.26   2.33   7.29 
1976 06  14.13   4.44   9.28 
1976 07  19.58   8.95  14.26 
1976 08  17.19   7.91  12.55 
1976 09  18.04   7.11  12.58 
1976 10   8.50 -99.99 -99.99 
1976 11   2.78  -3.89   -.55 
1976 12  -1.71  -7.22  -4.46 
1977 01  -4.41 -11.20  -7.80 
1977 02   2.07  -5.94  -1.93 
1977 03   0.56  -6.37  -2.90 
1977 04  10.61   0.36   5.48 
