1967 12  1.28  -7.89  -3.30 
1968 01 -4.14 -12.92  -8.53 
1968 02 -3.60 -14.11  -8.85 
1968 03  4.38  -5.02   -.31 
1968 04 11.20    .41   5.80 
1968 05 14.96   2.61   8.78 
1968 06 19.45   8.85  14.15 
1968 07 25.54  13.58  19.56 
1968 08 22.62  10.72  16.67 
1968 09 21.33   9.78  15.55 
1968 10 15.54   6.38  10.96 
1968 11  5.22  -2.23   1.49 
1968 12  1.42  -5.85  -2.21 
1969 01  -.24  -8.49  -4.36 
1969 02   .12  -7.01  -3.44 
1969 03  2.51  -6.12  -1.80 
1969 04  9.22  -1.03   4.09 
1969 05 15.11   3.83   9.46 
1969 06 99.99  10.64 -99.99 
1969 07 23.72  11.49  17.60 
1969 08 24.83  12.80  18.81 
1969 09 19.78  10.18  14.98 
1969 10 12.35   2.89   7.62 
1969 11  8.91    .84   4.87 
1969 12  2.88  -3.91   -.51 
1970 01 -5.95 -14.09 -10.02 
1970 02   .37 -10.52  -5.07 
1970 03  2.59  -5.79  -1.60 
1970 04  8.33  -1.71   3.31 
1970 05 17.35   5.69  11.52 
1970 06 22.30  10.41  16.35 
1970 07 25.34  13.71  19.52 
1970 08 24.25  13.87  19.06 
1970 09 17.93   8.47  13.20 
1970 10 14.48   5.01   9.74 
1970 11  7.71   -.65   3.53 
1970 12 -2.55 -10.92  -6.73 
1971 01 -4.03 -12.72  -8.37 
1971 02  -.44 -10.51  -5.47 
1971 03  3.10  -4.58   -.74 
1971 04  8.93   -.35   4.29 
1971 05 17.09   5.79  11.44 
1971 06 21.16   8.50  14.83 
1971 07 25.00  12.80  18.90 
1971 08 23.66  12.80  18.23 
1971 09 20.25   9.28  14.76 
1971 10 15.35   4.37   9.86 
1971 11  6.27  -1.76   2.25 
1971 12   . 6  -8.77  -4.35 
1972 01  -.11 -11.63  -5.87 
1972 02 -1.73 -12.85  -7.29 
1972 03  1.27  -8.80  -3.76 
1972 04  5.67  -3.27   1.20 
1972 05 17.37   4.57  10.97 
1972 06 21.72  10.89  16.30 
1972 07 23.92  14.05  18.98 
1972 08 23.37  13.19  18.28 
1972 09 20.09   8.71  14.40 
1972 10 11.35   2.01   6.68 
1972 11  4.71  -2.81    .95 
1972 12   .25  -9.77  -4.76 
1973 01  -.74  -9.32  -5.02 
1973 02 -2.08 -10.99  -6.53 
1973 03  6.13  -5.42    .35 
1973 04  8.85   -.33   4.26 
1973 05 14.07   4.92   9.49 
1973 06 22.02  12.08  17.04 
1973 07 25.20  15.80  20.50 
1973 08 23.60  14.73  19.16 
1973 09 18.29   7.37  12.83 
1973 10 13.33   2.99   8.16 
1973 11  6.35   -.63   2.86 
1973 12  6.16  -3.72   1.21 
1974 01 -1.43 -10.76  -6.09 
1974 02 -2.06 -13.06  -7.56 
1974 03  2.97  -6.61  -1.82 
1974 04  9.82    .10   4.96 
1974 05 12.14   2.31   7.22 
1974 06 21.85   9.45  15.65 
1974 07 22.83  11.03  16.93 
1974 08 24.87  12.57  18.72 
1974 09 18.82   8.54  13.68 
1974 10 10.59    .87   5.73 
1974 11  6.86   -.28   3.29 
1974 12  1.99  -5.25  -1.63 
1975 01  -.78 -10.57  -5.67 
1975 02 -2.80 -11.57  -7.18 
1975 03  1.63  -6.15  -2.26 
1975 04  6.21  -1.58   2.31 
1975 05 16.58   3.96  10.27 
1975 06 21.70   8.72  15.21 
1975 07 26.83  15.59  21.21 
1975 08 23.23  12.42  17.82 
1975 09 19.20   8.72  13.96 
1975 10 12.93   2.69   7.81 
1975 11  9.89    .39   5.14 
1975 12   .85  -9.87  -4.50 
1976 01  -.95 -11.07  -6.01 
1976 02  2.36  -9.22  -3.42 
1976 03  4.29  -5.95   -.82 
1976 04 10.34   -.18   5.08 
1976 05 16.70   6.13  11.42 
1976 06 23.23  12.03  17.62 
1976 07 23.66  13.43  18.54 
1976 08 24.39  13.42  18.90 
1976 09 18.99   9.26  14.12 
1976 10 12.97   2.41   7.69 
1976 11  5.29  -1.72   1.78 
1976 12   .37 -11.17  -5.40 
1977 01 -2.92 -13.48  -8.20 
1977 02  -.83  -9.52  -5.17 
1977 03  4.78  -3.19    .79 
1977 04  9.18  -1.72   3.73 
1977 05 17.11   3.34  10.22 
1977 06 18.87  10.42  14.64 
1977 07 24.72  13.25  18.98 
1977 08 24.19  12.98  18.58 
1977 09 17.95   7.96  12.95 
1977 10 13.79   4.06   8.92 
1977 11  8.97   -.52   4.22 
1977 12  1.57  -6.69  -2.56 
1978 01 -1.47 -10.83  -6.15 
1978 02 -2.69 -12.88  -7.78 
1978 03  2.25  -8.08  -2.91 
1978 04  7.23  -1.64   2.79 
1978 05 19.23   5.21  12.21 
1978 06 21.79   9.68  15.73 
1978 07 24.89  12.58  18.73 
1978 08 25.50  12.58  19.04 
1978 09 17.86   5.65  11.75 
1978 10 13.33   2.78   8.05 
1978 11  6.01  -4.89    .56 
1978 12  1.14  -7.29  -3.07 
