1971 10  7.66  -4.91   1.37 
1971 11  2.20 -11.15  -4.47 
1971 12 -3.43 -15.79  -9.60 
1972 01 -1.27 -17.50  -9.38 
1972 02   .98 -14.92  -6.97 
1972 03  5.41 -10.93  -2.76 
1972 04  6.51  -6.99   -.23 
1972 05 12.55  -2.61   4.97 
1972 06 17.67   3.10  10.38 
1972 07 21.80   5.18  13.49 
1972 08 18.96   4.42  11.70 
1972 09 14.10   1.67   7.88 
1972 10  7.23  -2.42   2.40 
1972 11  -.43 -14.98  -7.70 
1972 12 -2.53 -17.81 -10.17 
1973 01 -2.33 -17.98 -10.15 
1973 02   . 0 -16.26  -8.13 
1973 03   .-6 -12.50  -6.28 
1973 04  3.53 -11.32  -3.89 
1973 05 10.84  -3.23   3.80 
1973 06 16.58   1.59   9.08 
1973 07 19.70   5.84  12.77 
1973 08 19.37   6.49  12.93 
1973 09 14.08   1.40   7.74 
1973 10 10.31  -2.60   3.85 
1973 11  2.78  -6.29  -1.75 
1973 12  -.61 -15.75  -8.18 
1974 01 -3.85 -16.56 -10.20 
1974 02 -1.21 -18.14  -9.67 
1974 03  3.95 -10.49  -3.27 
1974 04  4.52 -10.48  -2.97 
1974 05 14.15  -1.22   6.46 
1974 06 20.40   3.39  11.89 
1974 07 20.16   6.42  13.29 
1974 08 19.87   4.67  12.27 
1974 09 16.57   1.15   8.85 
1974 10  9.78  -1.15   4.31 
1974 11  2.76 -10.72  -3.98 
1974 12 -2.57 -16.53  -9.55 
1975 01 -2.35 -16.51  -9.43 
1975 02 -2.96 -16.98  -9.96 
1975 03  -.90 -11.63  -6.26 
1975 04  2.20  -9.42  -3.61 
1975 05  8.53  -4.23   2.14 
1975 06 15.46   1.11   8.28 
1975 07 20.42   6.89  13.65 
1975 08 19.24   5.07  12.15 
1975 09 15.34   1.43   8.38 
1975 10 10.43  -3.35   3.54 
1975 11  2.51 -11.08  -4.28 
1975 12  1.26 -14.92  -6.83 
1976 01  -.79 -18.20  -9.50 
1976 02  1.17 -12.21  -5.51 
1976 03  1.03 -15.13  -7.05 
1976 04  5.78  -7.17   -.69 
1976 05 12.29  -1.82   5.23 
1976 06 17.66   2.72  10.18 
1976 07 22.19   7.90  15.04 
1976 08 18.04   5.99  12.01 
1976 09 14.87   3.17   9.02 
1976 10  9.95  -5.80   2.07 
1976 11  4.13 -10.02  -2.94 
1976 12  1.43 -13.80  -6.18 
1977 01 -2.43 -17.09  -9.76 
1977 02   .11 -14.54  -7.21 
1977 03  -.93 -14.82  -7.87 
1977 04  7.72  -5.76    .97 
1977 05 11.13   -.78   5.17 
1977 06 20.75   5.15  12.95 
1977 07 20.50   6.25  13.37 
1977 08 20.07   6.53  13.30 
1977 09 16.21   3.49   9.85 
1977 10 10.91  -1.99   4.46 
1977 11  2.60  -8.88  -3.14 
1977 12   .-9 -11.31  -5.70 
1978 01 -1.24 -11.95  -6.59 
1978 02 -1.44 -13.69  -7.56 
1978 03  1.99  -8.50  -3.25 
1978 04  4.88  -4.82    . 2 
1978 05  9.26  -2.01   3.62 
1978 11  -.23  -5.74  -2.98 
1978 12 -4.11 -99.99 -99.99 
1979 01 -6.90 -16.19 -11.54 
1979 02 -2.39  -9.58  -5.98 
1979 03  -.90  -9.06  -4.98 
