1973 11 99.99  -8.84 -99.99 
1973 12 -8.67 -18.31 -13.49 
1974 01 13.39 -29.45 -21.42 
1974 02 12.51 -26.68 -19.59 
1974 03 -5.79 -20.80 -13.29 
1974 04  3.24  -8.39  -2.58 
1974 05  7.40  -2.00   2.70 
1974 06 21.34   8.64  14.99 
1974 07 22.62  10.17  16.39 
1974 08 21.46   8.84  15.15 
1974 09 12.36   2.33   7.34 
1974 10  3.24  -4.50   -.63 
1974 11  -.66  -7.15  -3.90 
1974 12 -6.13 -16.70 -11.42 
1975 01 14.80 -99.99 -99.99 
1975 02 10.63 -23.14 -16.88 
1975 03 -5.14 -99.99 -99.99 
1975 04  2.28  -9.41  -3.56 
1975 05 17.62   1.55   9.58 
1975 06 22.15   8.41  15.28 
1975 07 24.09  11.06  17.57 
1975 08 21.27   8.20  14.73 
1975 09 14.06   4.52   9.29 
1975 10  7.16   -.35   3.40 
1975 11  -.22  -6.88  -3.55 
1975 12 10.28 -25.44 -17.86 
1976 01 13.36 -29.15 -21.25 
1976 02 -8.14 -23.44 -15.79 
1976 03 -2.81 -20.40 -11.60 
1976 04  5.33  -5.18    . 7 
1976 05 13.82    .98   7.39 
1976 06 24.00   7.94  15.97 
1976 07 22.36   9.46  15.91 
1976 08 21.70   9.25  15.47 
1976 09 14.03   1.85   7.94 
1976 10  4.92  -3.05    .93 
1976 11 -3.18 -10.88  -7.03 
1976 12 14.09 -27.12 -20.60 
1977 01 13.32 -24.14 -18.73 
1977 02 -8.68 -21.09 -14.89 
1977 03  2.36  -9.08  -3.35 
1977 04  6.15  -9.63  -1.74 
1977 06 18.60   6.65  12.62 
1977 07 22.57   7.90  15.23 
1977 08 21.14   8.29  14.71 
1977 09 16.24   3.98  10.10 
1977 10  9.63   -.20   4.71 
1978 08 20.69   8.33  14.51 
1978 09 11.61   1.78   6.69 
1978 10  5.54  -1.36   2.08 
1978 11 -1.80 -12.35  -7.07 
1978 12 -9.97 -22.93 -16.45 
1979 01 12.77 -24.35 -18.56 
1979 02 13.79 -27.62 -20.70 
1979 03  1.08 -10.91  -4.91 
1979 04  6.53  -4.81    .86 
1979 05 14.01    .82   7.41 
1979 06 21.66   7.25  14.45 
1979 11 99.99  -8.12 -99.99 
1980 03 -1.00 -16.65  -8.82 
1980 06 99.99   3.12 -99.99 
1980 08 23.35 -99.99 -99.99 
1980 09 12.29   -.22   6.03 
1980 10  4.29  -4.90   -.30 
1980 11 -2.67 -13.38  -8.02 
1980 12 99.99 -30.67 -99.99 
1981 01 99.99 -26.86 -99.99 
1981 02 99.99 -15.39 -99.99 
1981 03  -.42 -12.31  -6.36 
