1968 09 17.28   7.70  12.49 
1968 10  5.81   1.16   3.49 
1968 11 -3.76 -10.35  -7.05 
1968 12 12.93 -20.59 -16.76 
1969 01 17.06 -24.08 -20.57 
1969 02 14.72 -24.55 -19.63 
1969 04 -3.69 -13.52  -8.60 
1969 05  1.59  -4.85  -1.62 
1969 06  7.83   -.57   3.63 
1969 07 17.28   5.62  11.45 
1969 08 17.01   6.65  11.83 
1969 09  7.29    .95   4.12 
1969 10  1.83  -3.93  -1.04 
1969 11 -3.39 -10.30  -6.84 
1969 12 10.95 -18.61 -14.78 
1970 01 20.65 -30.22 -25.43 
1970 02 22.70 -32.91 -27.80 
1970 03 -9.16 -21.86 -15.51 
1970 04 -5.16 -13.70  -9.43 
1970 05  1.21  -7.08  -2.93 
1970 06 12.09   1.98   7.03 
1970 07 19.39   7.62  13.50 
1970 08 17.07   7.77  12.42 
1970 09 11.37   3.78   7.57 
1970 10  7.09    .89   3.99 
1970 11 -4.29 -10.76  -7.52 
1970 12 18.64 -29.06 -23.84 
1971 01 20.55 -28.34 -24.44 
1971 02 14.35 -23.83 -19.09 
1971 03 10.73 -22.82 -16.77 
1971 04 -1.43 -11.87  -6.65 
1971 05  4.10  -4.78   -.34 
1971 06 12.11   1.44   6.77 
1971 07 15.68   3.73   9.70 
1971 08 13.89   4.96   9.43 
1971 10  6.72    . 4   3.38 
1971 11 -3.65 -10.79  -7.22 
1971 12 13.36 -24.44 -18.90 
1972 01 24.12 -32.84 -28.48 
1972 02 22.41 -31.88 -27.14 
1972 03 13.94 -26.01 -19.97 
1972 04 -2.36 -14.35  -8.36 
1972 05  6.82  -3.35   1.73 
1972 06 13.51   2.92   8.21 
1972 07 16.77   5.13  10.95 
1972 08 15.62   5.36  10.49 
1972 10  1.38  -5.75  -2.18 
1972 11 -6.22 -14.43 -10.32 
1972 12 22.18 -30.95 -26.56 
1973 01 17.26 -27.67 -22.46 
1973 02 17.84 -29.22 -23.53 
1973 03 -6.19 -19.00 -12.59 
1973 04 -5.09 -14.78  -9.93 
1973 05  3.94  -3.74    .10 
1973 06 10.49   1.85   6.17 
1973 07 16.90   6.13  11.51 
1973 09 11.53   3.06   7.29 
1973 10  6.02    .12   3.07 
1973 11 -2.78  -9.00  -5.89 
1973 12 16.77 -24.99 -20.88 
1974 01 26.15 -36.34 -31.25 
1974 02 20.62 -30.75 -25.68 
1974 03 16.85 -28.75 -22.80 
1974 04 -3.94 -17.16 -10.55 
1974 05  2.42  -3.95   -.76 
1974 06  9.96   2.96   6.46 
1974 07 17.48   7.26  12.37 
1974 08 15.01   6.09  10.55 
1974 09  6.81   -.39   3.21 
1974 10  1.44  -4.35  -1.45 
1974 11 -2.13  -8.43  -5.28 
1974 12 11.98 -18.54 -15.26 
1975 01 22.92 -32.09 -27.50 
1975 03 12.58 -23.13 -17.85 
1975 04 -2.98 -14.08  -8.53 
1975 05  7.38  -1.17   3.10 
1975 08 16.21   6.04  11.12 
1975 10  4.61  -1.42   1.59 
1975 11 -3.80  -9.74  -6.77 
1975 12 19.62 -27.32 -23.47 
1976 01 21.32 -29.88 -25.59 
1976 02 19.42 -30.17 -24.79 
1976 03 17.12 -30.92 -24.02 
1976 04 -2.46 -11.83  -7.14 
1976 05  2.92  -4.69   -.88 
1976 06 12.14   1.23   6.68 
1976 07 19.14   4.01  11.57 
1976 08 19.50   5.70  12.60 
1976 09 11.30   2.65   6.97 
1976 10  3.83  -2.82    .50 
1976 11 -4.77 -10.58  -7.67 
1976 12 23.85 -30.67 -27.26 
1977 01 19.94 -27.27 -23.60 
1977 02 16.71 -24.13 -20.42 
1977 03 -9.96 -20.71 -15.33 
1977 04  -.52 -11.54  -6.03 
1977 05  6.80  -1.04   2.87 
1977 09 11.33   3.69   7.51 
1977 10  6.40  -1.23   2.58 
1977 11 -4.34  -9.75  -7.04 
1977 12 16.90 -22.43 -19.66 
1978 05  5.44  -3.71    .86 
1978 06 10.98    .76   5.87 
1978 07 16.91   6.83  11.87 
1978 09  9.16   2.19   5.67 
1978 11 -8.01 -15.67 -11.84 
1979 01 10.29 -23.81 -17.04 
1979 02 25.03 -38.16 -31.59 
1979 04 -1.94 -11.60  -6.77 
1979 05  4.98  -4.28    .34 
