1971 11   6.00  -8.13  -1.06 
1971 12   -.15 -13.10  -6.62 
1972 01   0.95 -11.08  -5.06 
1972 02   5.99  -8.77  -1.39 
1972 03  11.78  -5.14   3.32 
1972 04  12.65 -99.99 -99.99 
1972 05  20.63   -.41  10.10 
1972 06  25.13   4.96  15.04 
1972 07  29.96   6.39  18.17 
1972 08  29.08   7.27  18.17 
1972 09  21.38   2.42  11.90 
1972 10  15.35   -.30   7.52 
1972 11   5.52  -5.83   -.15 
1972 12   0.56 -12.76  -6.10 
1973 01   1.50 -13.38  -5.94 
1973 02   4.90  -8.71  -1.90 
1973 03   5.38  -6.11   -.36 
1973 04  11.46  -3.57   3.94 
1973 06  24.97   5.20  15.08 
1973 07  28.71   8.85  18.78 
1973 08  28.93   8.01  18.47 
1973 09  22.65   0.85  11.75 
1973 10  16.79  -2.00   7.39 
1973 11   6.15  -4.52   0.81 
1973 12   3.84  -7.22  -1.69 
1974 01   1.04 -10.51  -4.73 
1974 02   3.63  -9.41  -2.89 
1974 03   8.85  -2.97   2.94 
1974 04  12.54  -3.91   4.31 
1974 05  19.40  -0.03   9.68 
1974 06  28.80   6.87  17.83 
1974 07  30.13   8.74  19.43 
1974 08  28.95   6.75  17.85 
1974 09  25.62   2.39  14.00 
1974 10  16.79  -2.14   7.32 
1974 11   8.96  -6.23   1.36 
1974 12   2.43 -10.20  -3.88 
1975 01   2.06 -10.77  -4.35 
1975 02   2.95  -8.04  -2.54 
1975 03   5.36  -5.70   -.16 
1975 04   7.42  -5.33   1.04 
1975 05  15.85  -1.16   7.34 
1975 06  21.76   3.60  12.68 
1975 07  30.32  10.66  20.49 
1975 08  27.46   6.85  17.15 
1975 09  24.82   3.08  13.95 
1975 10  14.10   -.25   6.92 
1975 11   7.32  -7.52  -0.09 
1975 12   6.57  -7.20   -.31 
1976 01   5.11  -9.07  -1.97 
1976 02   5.94  -7.77   -.91 
1976 03   7.22  -8.52   -.65 
1976 04  12.54  -3.36   4.59 
1976 05  21.08   2.51  11.79 
1976 06  24.26 -99.99 -99.99 
1976 08  26.18   5.90  16.04 
1976 10  17.10  -3.02   7.04 
1976 11  13.12  -6.47   3.32 
1976 12   7.82 -11.76  -1.97 
1977 01   4.80 -12.47  -3.83 
1977 05  13.34   -.71   6.31 
1977 06  26.55   7.88  17.21 
1977 07  29.73   8.37  19.04 
1977 08  28.67   8.72  18.69 
1977 09  23.24   3.68  13.46 
1977 10  18.90  -2.05   8.42 
1977 11   9.16  -5.70   1.73 
1978 01 -99.99  -7.67 -99.99 
1978 02   5.12  -6.25   -.56 
1978 03  11.46  -2.54   4.46 
1978 04  12.24  -2.07   5.08 
1978 05  16.62   0.58   8.60 
1978 06  25.06   3.26  14.16 
1978 07  30.80   7.87  19.33 
1978 09  20.89   3.24  12.06 
1978 10  20.57   -.71   9.93 
1979 04  13.25 -99.99 -99.99 
1979 09  27.34   4.12  15.73 
1979 10  18.01   0.24   9.12 
