1970 06 23.21  11.18  17.19 
1970 07 25.74  15.03  20.38 
1970 08 24.77  13.46  19.11 
1970 09 19.42  10.54  14.98 
1970 10 14.14   5.75   9.94 
1970 11  6.26    .54   3.40 
1970 12 -4.06 -13.14  -8.60 
1971 01 -6.45 -17.62 -12.03 
1971 02 -2.22 -11.32  -6.77 
1971 03  -.26 -11.46  -5.86 
1971 04  7.85  -2.09   2.87 
1971 05 17.85   4.85  11.35 
1971 06 24.02  11.99  18.00 
1971 07 23.57  13.51  18.54 
1971 08 23.35  12.36  17.85 
1971 09 21.92  11.62  16.77 
1971 10 17.19   7.24  12.21 
1971 11  4.80  -1.69   1.55 
1971 12   .77  -7.72  -3.47 
1972 01 -2.60 -13.23  -7.91 
1972 02 -4.89 -16.43 -10.66 
1972 03  -.69 -11.15  -5.91 
1972 04  6.57  -3.60   1.48 
1972 05 19.62   7.06  13.34 
1972 06 20.96  10.49  15.72 
1972 07 24.90  13.83  19.36 
1972 08 23.01  13.18  18.09 
1972 09 19.89   9.95  14.92 
1972 10 10.37   1.88   6.12 
1972 11  3.03  -1.94    .54 
1972 12 -1.41  -9.91  -5.66 
1973 01 -2.26 -10.62  -6.44 
1973 02 -4.08 -16.45 -10.26 
1973 03  6.22  -1.45   2.38 
1973 04 10.97   1.13   6.05 
1973 05 15.81   6.25  11.03 
1973 06 23.43  13.43  18.43 
1973 07 26.31  14.80  20.55 
1973 08 25.74  15.94  20.84 
1973 10 14.78   5.53  10.15 
1973 11  4.65   -.46   2.09 
1973 12 -1.75  -9.13  -5.44 
1974 01 -2.94 -11.82  -7.38 
1974 02 -5.02 -16.66 -10.84 
1974 03   .70  -7.48  -3.39 
1974 04 11.42    . 4   5.73 
1974 05 14.80   4.75   9.77 
1974 06 22.26  11.78  17.02 
1974 07 24.87  13.63  19.25 
1974 08 24.85  13.79  19.32 
1974 09 18.03   7.96  12.99 
1974 10 10.62    .68   5.65 
1974 11  4.85  -1.99   1.43 
1974 12  1.00  -5.20  -2.09 
1975 01 -1.03 -10.71  -5.87 
1975 02 -2.38 -11.64  -7.01 
1975 03   .32  -9.07  -4.37 
1975 04  6.02  -4.54    .74 
1975 05 21.66   9.22  15.44 
1975 06 24.15  12.65  18.40 
1975 07 26.92  15.10  21.01 
1975 08 24.63  14.19  19.41 
