1968 01 -2.18  -8.49  -5.33 
1968 02  3.81  -3.33    .24 
1968 03  5.69  -3.10   1.29 
1968 05 11.37    .88   6.12 
1968 06 16.44   4.33  10.38 
1968 07 23.34   8.95  16.14 
1968 09 16.20   4.44  10.32 
1968 10  8.59    . 5   4.32 
1968 11  1.12  -3.74  -1.31 
1968 12 -3.09  -8.35  -5.72 
1969 01 -3.64 -10.48  -7.06 
1969 02 -2.02  -8.01  -5.01 
1969 04  7.73  -3.78   1.97 
1969 05 13.50    .30   6.90 
1969 06 18.94   5.70  12.32 
1969 07 21.24   6.37  13.80 
1969 08 22.67   5.86  14.26 
1969 09 17.45   4.01  10.73 
1969 10  7.11  -1.37   2.87 
1969 11  4.82  -2.70   1.06 
1969 12  1.17  -5.13  -1.97 
1970 02  3.28  -4.40   -.56 
1970 10  9.89   -.83   4.53 
1970 11  2.91  -4.01   -.55 
1970 12 -2.41  -8.32  -5.36 
1971 01  -.58  -6.92  -3.75 
1971 02  1.55  -7.29  -2.87 
1971 05 10.24   1.11   5.67 
1971 06 15.99   4.73  10.36 
1971 07 23.07   7.11  15.09 
1971 08 26.54   8.14  17.34 
1971 09 14.72   -.97   6.87 
1971 10  8.05  -3.55   2.25 
1971 11  1.40  -5.55  -2.07 
1971 12 -3.27  -9.29  -6.28 
1972 01 -2.81 -11.18  -6.99 
1972 02   .24  -6.83  -3.29 
1972 03  5.32  -5.43    .-5 
1972 04  4.87  -8.12  -1.62 
1972 05 12.76  -1.66   5.55 
1972 07 21.67   4.19  12.93 
1972 08 23.85   4.50  14.17 
1972 09 14.50   2.01   8.25 
1972 10 10.28   -.42   4.92 
1972 11  2.18  -2.65   -.23 
1973 02   .77  -6.00  -2.61 
1973 04  9.24  -3.37   2.93 
1973 05 14.38   1.99   8.18 
1973 06 16.81   4.69  10.75 
1973 07 22.95   7.79  15.37 
1973 08 22.71   7.74  15.22 
1973 09 16.03   4.67  10.35 
1973 10  9.43    .23   4.83 
1973 11   .31  -4.41  -2.05 
1973 12   .20 -99.99 -99.99 
1974 04  6.59  -2.98   1.80 
1974 05  8.31   -.79   3.76 
1974 06 18.93   3.86  11.39 
1974 07 21.73   6.54  14.13 
1974 08 22.72   6.90  14.81 
1974 09 21.44   8.91  15.17 
1974 10 13.95   1.47   7.71 
1974 11  3.09  -2.59    .25 
1974 12  -.66  -6.28  -3.47 
1975 01 -2.20  -7.77  -4.98 
1975 02 -1.01  -8.64  -4.83 
1975 03  1.59  -7.10  -2.75 
1975 04  2.54  -5.53  -1.49 
1975 05  8.47   -.80   3.83 
1975 06 13.66   3.39   8.52 
1975 07 23.26   9.64  16.45 
1975 08 21.31   5.39  13.35 
1975 09 21.24   3.90  12.57 
1975 10  7.56   -.66   3.45 
1975 11  3.42  -5.00   -.79 
1975 12  1.75 -99.99 -99.99 
1976 01 -3.81  -7.64  -5.72 
