1970 09  6.96   -.70   3.13 
1970 10   .37  -7.82  -3.72 
1970 11 -5.08 -12.76  -8.92 
1970 12 10.43 -18.87 -14.65 
1971 01 17.70 -26.76 -22.23 
1971 02 -5.90 -14.70 -10.30 
1971 03 -6.54 -15.75 -11.14 
1971 04  1.86  -9.76  -3.95 
1971 06 13.42 -99.99 -99.99 
1971 07 16.37   4.46  10.42 
1971 08 12.81   4.60   8.70 
1971 09  7.63    .45   4.04 
1971 10   .36  -6.16  -2.90 
1971 11 -5.09 -13.78  -9.43 
1971 12 10.65 -20.68 -15.66 
1972 01 14.94 -23.35 -19.14 
1972 02 12.96 -20.50 -16.73 
1972 03 -7.06 -15.22 -11.14 
1972 04 -1.86 -12.48  -7.16 
1972 05  6.25  -3.15   1.55 
1972 06 10.93    .82   5.87 
1972 07 17.33   3.96  10.64 
1972 08 12.06   4.79   8.42 
1972 09  6.24  -1.16   2.53 
1972 10   .88  -7.00  -3.06 
1972 11 -3.32 -11.30  -7.31 
1973 01 12.74 -23.17 -17.95 
1973 02 -8.89 -17.54 -13.21 
1973 03 -3.20 -12.03  -7.61 
1973 04   .95 -99.99 -99.99 
1973 05  6.28 -99.99 -99.99 
1973 06 10.68   1.48   6.08 
1973 07 12.19   3.79   7.99 
1973 08 10.81   2.74   6.77 
1973 09  9.30  -1.11   4.09 
1973 10   .85  -3.49  -1.32 
1973 11 12.00 -18.09 -15.04 
1973 12 -7.46 -17.31 -12.38 
1974 01 13.87 -23.50 -18.68 
1974 02 -7.27 -15.37 -11.32 
1974 03 -7.70 -16.69 -12.19 
1974 05  7.91  -2.09   2.90 
1974 06 11.30   1.17   6.24 
1974 07 13.55   3.14   8.34 
1974 08 15.55   2.87   9.21 
1974 09 10.08    .77   5.42 
1974 10  2.03  -3.02   -.49 
1974 11 -1.85  -7.91  -4.88 
1974 12 -4.44 -14.48  -9.46 
1975 01 12.35 -20.24 -16.29 
1975 02 -9.89 -18.35 -14.12 
1975 03 -5.57 -17.28 -11.42 
1975 04   .10 -99.99 -99.99 
1975 06 10.33 -99.99 -99.99 
1975 07 13.81   5.30   9.55 
1975 08 12.41   3.72   8.06 
1975 09  9.27   2.31   5.79 
1975 10   .-6  -5.64  -2.85 
1975 11 -7.37 -17.11 -12.24 
1976 01 -7.19 -16.12 -11.66 
1976 02 -8.80 -18.93 -13.86 
1976 03 -3.96 -14.75  -9.35 
1976 04  1.80  -8.08  -3.14 
1976 05  5.75 -99.99 -99.99 
1976 06 13.54   1.67   7.60 
1976 08 14.30 -99.99 -99.99 
1976 09  9.12    .22   4.67 
1976 10  2.58  -4.14   -.78 
1976 11   .78  -4.85  -2.03 
1976 12 -4.00 -13.99  -8.99 
1977 01 -3.49 -11.31  -7.40 
1977 02  -.41  -7.70  -4.05 
1977 03 -3.57 -12.18  -7.87 
1977 04  1.80  -6.02  -2.11 
1977 05  6.80 -99.99 -99.99 
1977 06 12.56 -99.99 -99.99 
1977 08 18.12 -99.99 -99.99 
1977 09  9.78 -99.99 -99.99 
1977 11 -6.66 -16.29 -11.47 
1977 12 13.01 -22.37 -17.69 
1978 01 -8.08 -17.28 -12.68 
1978 02 -3.74 -13.72  -8.73 
1978 03 -3.29 -11.97  -7.63 
1978 04  1.88  -8.87  -3.49 
1978 05  6.56 -99.99 -99.99 
1978 06 12.83 -99.99 -99.99 
1978 08 15.89 -99.99 -99.99 
1978 11 -4.65 -12.13  -8.39 
1979 01 10.73 -99.99 -99.99 
1979 02 20.00 -25.80 -22.90 
1979 03 -2.34  -9.10  -5.72 
1979 06 10.84 -99.99 -99.99 
1979 10  5.13 -99.99 -99.99 
1979 11  -.91  -8.71  -4.81 
1979 12 -8.27 -16.68 -12.47 
1980 01 11.82 -24.30 -18.06 
1980 02 -3.48 -13.52  -8.50 
1980 03 -3.81 -13.27  -8.54 
1980 04  1.62 -99.99 -99.99 
1980 11 -1.22  -6.33  -3.77 
1980 12 12.28 -22.34 -17.31 
1981 01  -.69  -9.22  -4.95 
1981 02 -4.80 -14.65  -9.72 
1981 03  -.35  -9.30  -4.82 
1981 04  -.58 -10.62  -5.60 
1981 11 -2.27  -9.52  -5.89 
1981 12 -8.63 -16.81 -12.71 
1982 01 16.73 -24.45 -20.59 
1982 02 -9.52 -17.23 -13.37 
1982 03 -4.55 -99.99 -99.99 
1982 04  -.26 -99.99 -99.99 
1982 06 14.30 -99.99 -99.99 
1982 09  9.88 -99.99 -99.99 
1982 10   .48 -99.99 -99.99 
1982 11 -5.45 -13.29  -9.37 
1982 12 -4.98 -14.80  -9.89 
1983 01 -8.89 -18.48 -13.69 
1983 02 -4.11 -12.00  -8.05 
1983 03 -3.00 -13.52  -8.26 
1983 04  2.73  -7.85  -2.56 
1983 11 -4.48 -15.32  -9.89 
1983 12 11.56 -22.41 -16.98 
1984 01 -3.76 -13.90  -8.83 
1984 02 -2.69 -10.13  -6.41 
1984 03  1.21  -5.87  -2.33 
1984 11 -5.14 -14.02  -9.58 
1984 12 -8.93 -19.28 -14.10 
1985 01  -.77  -8.50  -4.63 
1985 02 -9.31 -19.19 -14.25 
1985 03 -3.18 -12.87  -8.02 
1985 11 -8.50 -20.59 -14.54 
1985 12 -2.48 -10.65  -6.56 
1986 01 -3.47 -11.72  -7.59 
1986 02 -5.35 -16.71 -11.03 
1986 03 -2.19 -99.99 -99.99 
