1970 04  6.27  -5.58    .34 
1970 05 15.09  -2.06   6.51 
1970 06 17.71   4.07  10.89 
1970 07 19.54   5.74  12.64 
1970 08 17.52   4.86  11.19 
1970 09 11.11   -.81   5.14 
1970 10  -.34  -9.39  -4.86 
1970 11 -7.21 -16.90 -12.05 
1970 12 16.74 -29.17 -22.95 
1971 01 21.25 -34.80 -28.02 
1971 02 -5.64 -18.24 -11.94 
1971 03 -3.51 -99.99 -99.99 
1971 04  5.38 -99.99 -99.99 
1971 05 11.16   -.67   5.24 
1971 06 20.86   4.33  12.59 
1971 07 21.76   6.20  13.98 
1971 08 19.08   5.83  12.45 
1971 09 12.14   -.98   5.58 
1971 10  1.65  -9.03  -3.68 
1971 11 11.47 -99.99 -99.99 
1971 12 12.99 -99.99 -99.99 
1972 01 18.61 -33.34 -25.98 
1972 02 11.00 -99.99 -99.99 
1972 03 -6.53 -23.57 -15.05 
1972 04  1.79 -99.99 -99.99 
1972 05 12.52 -99.99 -99.99 
1972 06 18.25 -99.99 -99.99 
1972 07 24.16   5.99  15.07 
1972 08 19.89   5.18  12.53 
1972 09 11.42 -99.99 -99.99 
1972 10  2.82  -6.55  -1.86 
1972 11 -7.49 -18.62 -13.05 
1972 12 16.70 -26.89 -21.79 
1973 01 16.58 -29.07 -22.82 
1973 02 11.08 -25.37 -18.22 
1973 03   .55 -13.50  -6.47 
1973 04  7.43  -3.72   1.85 
1973 05 13.80   -.99   6.40 
1973 06 18.20   4.23  11.21 
1973 07 20.75   5.75  13.25 
1973 08 17.68   4.00  10.84 
1973 09 13.06    .31   6.68 
1973 10   .88  -8.14  -3.63 
1973 11 99.99 -26.35 -99.99 
1973 12 12.84 -24.66 -18.75 
1974 01 21.82 -32.23 -27.02 
1974 02 11.63 -25.00 -18.31 
1974 03 -2.20 -18.29 -10.24 
1974 04  7.44  -4.67   1.38 
1974 05 16.02  -1.35   7.33 
1974 06 19.87   4.96  12.42 
1974 07 21.30   6.80  14.04 
1974 08 21.05   5.48  13.26 
1974 09 15.78   1.60   8.68 
1974 10  3.64  -4.65   -.50 
1974 11 -4.11 -15.84  -9.97 
1974 12 10.80 -19.69 -15.24 
1975 01 99.99 -27.61 -99.99 
1975 02 10.25 -24.15 -17.20 
1975 03 -2.19 -18.16 -10.17 
1975 05 13.41   -.32   6.54 
1975 06 17.04   3.70  10.37 
1975 07 20.34   7.42  13.88 
1975 09 12.58   2.22   7.40 
1975 10  2.80  -6.68  -1.94 
1975 11 14.13 -23.91 -19.02 
1975 12 15.78 -26.99 -21.38 
1976 01 13.98 -23.64 -18.81 
1976 02 13.03 -27.25 -20.14 
1976 03 -1.11 -15.22  -8.16 
1976 04  7.37  -5.55    .90 
1976 05 12.91    .-6   6.42 
1976 06 21.47   5.56  13.51 
1976 07 22.27   7.47  14.87 
1976 08 20.95   6.87  13.91 
1976 09 12.64   1.57   7.10 
1976 10  3.49  -4.48   -.49 
1976 11  -.62  -8.53  -4.57 
1976 12 -8.62 -17.28 -12.95 
1977 01 -2.17 -10.17  -6.17 
1977 02 -1.03  -9.27  -5.15 
1977 03 -1.39 -14.14  -7.76 
1977 05 12.84    .28   6.56 
1977 06 19.36   5.46  12.41 
1977 07 22.92   7.30  15.11 
1977 08 22.39   7.37  14.87 
1977 09 14.03   2.27   8.14 
1977 10  3.85  -4.60   -.37 
1977 11 14.82 -22.71 -18.76 
1977 12 18.79 -28.56 -23.67 
1978 01 14.26 -22.56 -18.41 
1978 02 -6.89 -17.62 -12.25 
1978 03  1.05 -12.39  -5.66 
1978 04  7.86  -5.57   1.14 
