1971 11 -7.74 -15.24 -11.49 
1971 12 99.99 -15.63 -99.99 
1972 02 -5.63 -15.47 -10.55 
1972 03 -5.29 -16.58 -10.93 
1972 04   .32 -11.29  -5.48 
1972 05 11.31    . 7   5.69 
1973 01 13.52 -21.98 -17.75 
1973 02 -5.68 -16.70 -11.19 
1973 03 -1.24  -9.93  -5.58 
1973 12 -5.68 -12.56  -9.12 
1974 01 -9.70 -19.53 -14.61 
1974 02 -8.45 -15.38 -11.91 
1974 03 -1.04 -12.49  -6.76 
1974 06 22.22   6.55  14.38 
1974 08 20.50   7.37  13.93 
1974 09 15.76   4.58  10.17 
1974 11 -2.33 -10.60  -6.46 
1974 12 -6.39 -15.17 -10.78 
1975 01 -9.28 -17.35 -13.31 
1975 02 -5.05 -15.64 -10.34 
1975 03 -1.07 -13.71  -7.39 
1975 04  3.95  -5.74   -.89 
1975 05 12.37    .62   6.49 
1975 07 21.39   8.93  15.16 
1975 08 99.99   7.93 -99.99 
1975 09 12.72   3.90   8.31 
1975 12 -9.00 -17.89 -13.44 
1976 02 -8.06 -17.90 -12.98 
1976 03 -1.50 -11.29  -6.39 
1976 06 22.19   6.52  14.35 
1976 07 22.94   9.57  16.25 
1976 09 14.98   2.28   8.63 
1976 10  3.14  -5.09   -.97 
1976 11  1.80  -5.20  -1.70 
1976 12 -3.00 -11.06  -7.03 
1977 01  -.54  -6.13  -3.33 
1977 03 -1.68 -13.79  -7.73 
1977 04  3.96  -5.48   -.76 
1977 05 12.72    .34   6.53 
1977 06 21.43   7.02  14.22 
1977 07 25.26   9.04  17.15 
1977 08 23.24   9.22  16.23 
1977 09 14.38   3.59   8.98 
1977 10  6.59  -2.34   2.12 
1977 11 -7.30 -16.18 -11.74 
1977 12 -9.57 -16.29 -12.93 
1978 05 16.45   1.68   9.07 
1978 06 16.96   6.20  11.58 
1978 07 20.59   8.57  14.58 
1978 08 22.84   7.81  15.32 
1978 09 15.38   4.88  10.13 
1978 10  4.50  -2.19   1.15 
1978 11 -3.06  -9.55  -6.30 
1978 12 -6.41 -13.16  -9.78 
1979 01 -5.46 -13.55  -9.50 
1979 02 -8.77 -20.43 -14.60 
1979 03  2.41  -8.12  -2.85 
1979 04  6.05  -4.19    .92 
1979 05 15.90   1.30   8.59 
1979 06 19.79   6.15  12.97 
1979 07 22.90   9.46  16.18 
1979 08 20.87   8.14  14.50 
1979 09 15.84   4.02   9.93 
1979 10  6.63   -.12   3.25 
1979 11   .18  -6.06  -2.94 
1979 12 10.33 -19.48 -14.90 
1980 01 -8.49 -16.85 -12.67 
1980 02  1.68  -6.89  -2.60 
1980 03   .74  -8.10  -3.68 
1980 04  9.09  -2.49   3.30 
1980 05 13.72   1.76   7.74 
1980 06 18.09   6.63  12.36 
1980 07 21.35   9.04  15.19 
1980 08 18.36   6.79  12.57 
1980 09 99.99   1.29 -99.99 
1980 11  1.47 -99.99 -99.99 
1980 12 14.72 -23.75 -19.23 
1981 01  2.26  -3.39   -.56 
1981 02 -1.66 -10.63  -6.14 
