1967 06 17.02   5.88  11.45 
1967 07 20.79  11.92  16.35 
1967 08 19.32   9.89  14.60 
1967 09 14.61   7.08  10.84 
1967 10  8.95   1.81   5.38 
1967 11  3.38  -3.14    .12 
1967 12 -2.94 -10.86  -6.89 
1968 01 -8.25 -19.11 -13.68 
1968 02 -6.65 -15.58 -11.11 
1968 03 -2.92 -12.75  -7.83 
1968 04  3.60  -1.86    .86 
1968 05 11.48   1.58   6.53 
1968 06 14.96   6.14  10.55 
1968 07 18.70   9.57  14.13 
1968 08 15.77   7.43  11.60 
1968 09 16.64   8.43  12.53 
1968 10 10.38   4.64   7.51 
1968 11   .93  -6.48  -2.77 
1968 12 -3.13  -9.93  -6.53 
1969 01 -3.53 -10.72  -7.12 
1969 02 -2.45 -10.81  -6.63 
1969 03  -.46  -8.35  -4.41 
1969 04   .92  -7.67  -3.37 
1969 05  8.72    .91   4.81 
1969 06 15.52   6.07  10.79 
1969 07 17.61   8.37  12.99 
1969 08 18.39   9.14  13.76 
1969 09 11.92   4.59   8.25 
1969 10  6.80   -.12   3.34 
1969 11  4.57   -.96   1.80 
1969 12  -.79  -7.53  -4.16 
1970 01 -9.25 -18.44 -13.84 
1970 02 -6.15 -17.01 -11.58 
1970 03  -.90  -9.12  -5.00 
1970 04  3.53  -5.07   -.77 
1970 05  9.58   1.14   5.36 
1970 06 14.30   6.23  10.26 
1970 07 20.12   9.79  14.95 
1970 08 19.59  10.46  15.02 
1970 09 13.32   5.59   9.45 
1970 10 10.70   2.87   6.78 
1970 11  4.25  -3.43    .40 
1970 12 -6.58 -16.74 -11.66 
1971 01 -6.66 -17.75 -12.20 
1971 02 -6.71 -18.34 -12.52 
1971 03  -.39  -8.51  -4.45 
1971 04  4.79  -1.78   1.50 
1971 05 11.33   2.14   6.73 
1971 06 15.33   5.71  10.52 
1971 07 18.44  10.05  14.24 
1971 08 17.37   8.67  13.02 
1971 09 13.52   5.32   9.42 
1971 10  7.65    .63   4.14 
1971 11  1.39  -5.48  -2.04 
1971 12 -9.07 -18.45 -13.76 
1972 01 -9.60 -21.45 -15.53 
1972 02 -9.58 -21.79 -15.68 
1972 04  1.70  -6.75  -2.52 
1972 05  7.34  -1.00   3.17 
1972 06 13.95   6.03   9.99 
1972 07 18.32   8.74  13.53 
1972 08 16.84   7.74  12.29 
1972 09 13.35   5.56   9.45 
1972 10  5.96   -.95   2.50 
1972 11   . 9  -6.85  -3.38 
1972 12 11.13 -20.88 -16.00 
1973 01 -9.62 -19.29 -14.45 
1973 02 -6.15 -17.06 -11.60 
1973 03  -.99 -11.37  -6.18 
1973 05  8.01   1.78   4.89 
1973 06 15.74   7.41  11.57 
1973 07 19.98  11.54  15.76 
1973 08 18.70  10.95  14.83 
1973 09 13.39   4.38   8.88 
1973 10  8.26    .12   4.19 
1973 11   .96  -5.33  -2.18 
1973 12 -1.04  -9.17  -5.11 
1974 01 13.21 -23.33 -18.27 
1974 02 -8.74 -18.40 -13.57 
1974 03 -4.05 -15.02  -9.53 
1974 04  1.02  -5.74  -2.35 
1974 05  7.54    .31   3.92 
1974 06 16.20   6.68  11.44 
1974 07 18.04  10.25  14.15 
1974 08 17.43   8.64  13.03 
1974 09 11.76   4.28   8.02 
1975 04  3.57  -3.27    .14 
1975 12 -7.19 -17.51 -12.35 
1976 01 -8.60 -19.25 -13.93 
1976 02 -8.05 -20.25 -14.15 
1976 03 -4.15 -14.10  -9.12 
1976 04  2.67  -3.59   -.45 
1976 05  8.53   1.19   4.85 
1976 06 16.50   6.93  11.71 
1976 07 19.06  11.34  15.20 
1976 08 17.90   8.93  13.42 
1976 09 13.20   6.08   9.63 
1976 10  6.28    .14   3.21 
1976 11   .42  -4.98  -2.28 
1976 12 -6.97 -17.76 -12.36 
1977 01 -7.41 -16.32 -11.86 
1977 02 -6.64 -16.54 -11.59 
1977 03   .39  -8.24  -3.92 
1977 04  2.80  -4.92  -1.06 
1977 05 11.08   1.68   6.38 
1977 06 14.85   7.43  11.14 
1977 07 17.95   8.84  13.39 
1977 08 16.49   8.17  12.33 
1977 09 12.17   4.27   8.22 
1977 10  8.30   1.88   5.09 
1977 11  4.37  -3.33    .52 
1977 12 -4.14 -12.55  -8.34 
1978 01 -8.71 -17.58 -13.14 
1978 02 -3.79 -11.78  -7.78 
1978 03 -3.62 -15.79  -9.70 
1978 04  2.41  -5.08  -1.33 
1978 05  9.50    .91   5.20 
1978 06 14.24   7.21  10.72 
1978 07 19.50  10.56  15.03 
1978 08 17.14   7.69  12.41 
