1972 12  -3.37 -13.95  -8.66 
1973 01   2.56  -9.25  -3.34 
1973 02   3.11  -9.78  -3.33 
1973 03   9.68  -4.00   2.84 
1973 04  10.34  -1.68   4.33 
1973 05  19.79   5.07  12.43 
1973 06  22.82   9.60  16.21 
1973 07  28.05  11.18  19.61 
1973 08  27.13  12.01  19.57 
1973 09  19.52   5.53  12.52 
1973 10  14.46   2.33   8.39 
1973 11   0.46 -10.01  -4.77 
1973 12   1.99  -9.21  -3.61 
1974 01  -1.34 -16.11  -8.72 
1974 02   4.48  -7.36  -1.43 
1974 03   5.05  -7.77  -1.35 
1974 04  14.35   1.16   7.76 
1974 05  14.69   3.58   9.13 
1974 06  24.79  10.21  17.50 
1974 07  27.04  12.84  19.94 
1974 08  22.29   9.54  15.91 
1974 09  20.12   4.39  12.25 
1974 10  17.40   2.49   9.94 
1974 11   8.16  -3.82   2.17 
1974 12   5.70  -5.01   0.34 
1975 01   0.55 -11.08  -5.26 
1975 02  -4.82 -16.26 -10.54 
1975 03   0.48  -9.78  -4.65 
1975 04   4.32  -5.90   -.79 
1975 05  15.65   3.62   9.63 
1975 06  20.11   8.28  14.19 
1975 07  27.55  14.03  20.79 
1975 08  22.57   9.25  15.91 
1975 09  20.16   5.32  12.74 
1975 10  12.25   0.97   6.61 
1975 11   4.37  -4.88   -.25 
1975 12   4.13  -8.96  -2.41 
1976 01   2.49  -9.39  -3.45 
1976 02   5.22  -5.70   -.24 
1976 03   5.00  -6.95   -.97 
1976 04  14.44   0.19   7.31 
1976 05  21.19   6.46  13.82 
1976 06  19.61   7.86  13.73 
1976 07  27.23  12.36  19.79 
1976 08  25.83  11.63  18.73 
1976 09  24.01   7.66  15.83 
1976 10  13.84   -.30   6.77 
1976 11   7.52  -5.61   0.95 
1976 12   4.61  -6.98  -1.18 
1977 01  -2.18 -14.49  -8.33 
1977 02   8.46  -2.36   3.04 
1977 03   7.07  -5.56   0.75 
1977 04  16.79   2.14   9.46 
1977 05  17.95   5.23  11.59 
1977 06  24.71  10.61  17.66 
1977 07  25.71  11.42  18.56 
1977 08  22.53   9.02  15.77 
1977 09  18.18   6.41  12.29 
1977 10  15.20 -99.99 -99.99 
1977 11   3.47  -8.30  -2.41 
1977 12  -4.21 -14.86  -9.53 
1978 01  -9.39 -19.87 -14.63 
1978 02  -6.19 -14.84 -10.51 
1978 03   5.39  -6.59   -.60 
1978 04  11.37 -99.99 -99.99 
1978 05  16.91   5.88  11.39 
1978 06  23.72   9.85  16.78 
1978 07  25.49  11.99  18.74 
1978 08  23.68 -99.99 -99.99 
1978 09  21.96   7.80  14.87 
1978 10  16.12   1.56   8.84 
1981 05  18.59   5.78  12.18 
1981 06  20.29   7.96  14.12 
1981 07 -99.99  11.14 -99.99 
1981 08  29.11  12.20  20.65 
1981 09  21.83 -99.99 -99.99 
1981 10  13.77 -99.99 -99.99 
1981 11  11.39  -2.44   4.47 
1981 12   0.85 -11.03  -5.08 
1982 03   2.02  -7.62  -2.80 
1982 04   9.29  -2.63   3.33 
1982 05  15.89   2.63   9.26 
1982 06  22.57   8.84  15.70 
1982 07  25.35  10.78  18.06 
1982 08 -99.99   9.18 -99.99 
1982 09 -99.99   3.19 -99.99 
1982 10  13.45   -.20   6.62 
1982 11   5.53  -9.85  -2.16 
1982 12   6.77  -9.78  -1.50 
1983 01   6.33  -7.35   -.51 
1983 02   7.34  -5.39   0.97 
1983 03   7.09  -4.44   1.32 
1983 04  13.54  -1.28   6.13 
1983 05  17.28   3.12  10.20 
1983 06  23.41   8.28  15.84 
1985 03   6.70  -5.93   0.38 
1985 07  30.10   9.38  19.74 
1985 08  23.32   6.84  15.08 
1985 09  13.80   2.42   8.11 
1985 10  14.10  -2.53   5.78 
1985 11 -99.99 -17.94 -99.99 
1985 12   2.48 -10.37  -3.94 
1986 01 -99.99  -5.60 -99.99 
1986 02  -1.80 -16.90  -9.34 
1986 03  10.36  -1.84   4.25 
1986 04  11.97  -2.49   4.74 
1986 05  17.94   3.30  10.62 
1986 06  26.01   6.79  16.40 
1986 07  25.09   8.66  16.87 
1986 08  27.21   8.30  17.75 
1986 09  14.35   3.31   8.83 
1986 10  16.86   -.21   8.32 
1986 11 -99.99 -10.36 -99.99 
1986 12   5.76  -8.39  -1.31 
1987 01   5.31 -99.99 -99.99 
1987 02   7.04  -8.74   -.84 
1987 03   6.27  -5.13   0.56 
1987 04  18.01   0.15   9.08 
1987 05  21.20 -99.99 -99.99 
1987 06  25.83   8.68  17.25 
1987 07  25.52   9.82  17.67 
1987 08  22.67   7.14  14.90 
