1974 06 23.69  13.93  18.81 
1974 07 27.66  15.75  21.70 
1974 08 26.18  16.25  21.21 
1974 09 20.39  10.21  15.29 
1974 10 14.70   4.79   9.74 
1974 11  8.57   2.08   5.32 
1974 12  1.56  -2.99   -.71 
1975 01  1.40  -4.27  -1.43 
1975 02   .73  -5.03  -2.15 
1975 03  3.86  -3.67    . 9 
1975 04  8.76   -.24   4.26 
1975 05 22.72  10.86  16.78 
1975 06 24.65  15.04  19.84 
1975 07 27.34  16.35  21.84 
1975 08 25.52  16.60  21.06 
1975 09 18.85  10.22  14.53 
1975 10 16.42   6.89  11.65 
1975 11 11.88   4.16   8.02 
1975 12  1.25  -5.79  -2.27 
1976 01 -2.66 -11.09  -6.87 
1976 02  4.23  -5.01   -.38 
1976 03  7.81   -.52   3.64 
1976 04 13.86   3.45   8.65 
1976 05 17.37   7.03  12.20 
1976 06 26.15  15.07  20.61 
1976 07 26.06  15.07  20.56 
1976 08 24.74  12.87  18.80 
1976 09 21.02  10.17  15.59 
1976 10 12.36   3.43   7.89 
1976 11  4.54  -2.76    .89 
1976 12 -1.81 -10.55  -6.18 
1977 01 -7.48 -15.63 -11.55 
1977 02 -1.35  -8.59  -4.97 
1977 03  8.12   -.90   3.61 
1977 04 14.97   3.38   9.17 
1977 05 23.53   9.81  16.67 
1977 06 23.25  12.50  17.87 
1977 07 28.05  17.90  22.97 
1977 08 24.61  15.18  19.89 
1977 09 21.70  13.33  17.51 
1977 10 13.95   5.61   9.78 
1977 11  8.43   2.42   5.42 
1977 12  -.10  -6.19  -3.14 
1978 01 -4.35 -11.06  -7.70 
1978 02 -5.86 -14.89 -10.37 
1978 03  1.73  -6.80  -2.53 
1978 04 11.09    .65   5.87 
1978 05 19.66   8.89  14.28 
1978 06 24.15  13.40  18.77 
1978 07 25.74  15.98  20.86 
1978 08 26.35  15.23  20.79 
1979 01 -4.56 -99.99 -99.99 
1979 02 -5.86 -99.99 -99.99 
1979 03  6.29 -99.99 -99.99 
1979 04 10.37   1.83   6.10 
1979 05 17.79 -99.99 -99.99 
1979 06 23.80 -99.99 -99.99 
1979 07 25.60  15.71  20.65 
1979 08 24.55 -99.99 -99.99 
1979 09 22.42  11.10  16.76 
1979 10 13.71   6.29  10.00 
1979 11  8.13 -99.99 -99.99 
1979 12  3.16 -99.99 -99.99 
1980 08 27.15 -99.99 -99.99 
1980 09 21.92  11.90  16.91 
1980 10 13.04 -99.99 -99.99 
1980 11  6.88 -99.99 -99.99 
1980 12   .75 -99.99 -99.99 
1981 01 -4.27 -99.99 -99.99 
1981 02  1.04 -99.99 -99.99 
1981 03  5.44 -99.99 -99.99 
1981 06 24.85 -99.99 -99.99 
1981 07 26.80 -99.99 -99.99 
1981 08 25.48 -99.99 -99.99 
1981 09 19.86  11.48  15.67 
1981 10 12.65 -99.99 -99.99 
1981 11  8.89 -99.99 -99.99 
1982 02 -3.27 -99.99 -99.99 
1982 03  3.62 -99.99 -99.99 
1982 05 23.37 -99.99 -99.99 
1982 06 22.19 -99.99 -99.99 
1982 07 26.46 -99.99 -99.99 
1982 08 24.50 -99.99 -99.99 
1982 09 20.55  10.09  15.32 
1982 11  9.47 -99.99 -99.99 
1982 12  6.06 -99.99 -99.99 
1983 02  2.33 -99.99 -99.99 
1983 04 11.38 -99.99 -99.99 
