1957 11   -.66  -5.37  -3.01 
1957 12  -2.82  -7.24  -5.02 
1958 01  -3.26  -7.87  -5.56 
1958 02  -1.23  -6.60  -3.91 
1958 03   3.36  -6.54  -1.59 
1958 04   7.12  -1.89   2.61 
1958 05  18.73   1.40  10.06 
1958 06  22.03   6.84  14.43 
1958 07  24.14   7.74  15.94 
1958 08  23.19   6.78  14.98 
1958 09  12.86   3.13   7.99 
1958 10   7.30  -1.00   3.15 
1958 11  -3.24  -8.77  -6.00 
1958 12  -4.16  -9.59  -6.87 
1959 01  -6.49 -12.64  -9.56 
1959 02  -4.11 -11.30  -7.70 
1959 03   1.44  -6.11  -2.33 
1959 04   6.83  -4.06   1.38 
1959 05  10.81   -.28   5.26 
1959 06  16.74   3.36  10.05 
1959 07  22.54   6.00  14.27 
1959 08  16.51   4.92  10.72 
1959 09  12.33   3.69   8.01 
1959 10   5.25  -1.16   2.04 
1959 11  -3.82  -9.89  -6.85 
1959 12  -4.86  -9.16  -7.01 
1960 01  -8.18 -13.82 -11.00 
1960 02  -2.19 -10.92  -6.55 
1960 03   2.69  -8.18  -2.74 
1960 04   7.60  -2.30   2.65 
1960 05  10.63   0.12   5.37 
1960 06  15.59   4.51  10.05 
1960 07  26.36   7.56  16.96 
1960 08  18.12   6.95  12.53 
1960 09  15.20   3.35   9.27 
1960 10   7.08   0.91   3.99 
1960 11  -2.29  -7.31  -4.80 
1960 12  -5.40 -10.52  -7.96 
1961 01  -4.32  -9.85  -7.08 
1961 02   -.62  -5.17  -2.89 
1961 03   3.73  -5.62   -.94 
1961 04   5.90  -2.46   1.72 
1961 05  14.52   1.01   7.76 
1961 06  21.65   5.25  13.45 
1961 07  22.80   7.40  15.10 
1961 08  23.27   7.50  15.38 
1961 09  11.65   2.22   6.93 
1961 10   4.25  -1.45   1.40 
1961 11  -4.31  -9.82  -7.06 
1961 12  -7.21 -12.15  -9.68 
1962 01  -8.43 -13.81 -11.12 
1962 02  -2.85 -11.04  -6.94 
1962 03   1.02  -8.97  -3.97 
1962 04   8.20  -1.63   3.28 
1962 05  12.10   0.16   6.13 
1962 06  17.28   3.55  10.41 
1962 07  20.95   6.05  13.50 
1962 08  16.70   6.40  11.55 
1962 09  16.66   2.79   9.72 
1962 10   7.83   0.71   4.27 
1962 11   0.77  -2.55   -.89 
1962 12  -2.79  -6.42  -4.60 
1963 01 -11.00 -17.01 -14.00 
1963 02   1.42  -5.14  -1.85 
1963 03   3.31  -4.92   -.80 
1963 04   8.88  -2.01   3.43 
1963 05  13.89  -0.07   6.91 
1963 06  18.12   4.89  11.50 
1963 07  19.92   6.70  13.31 
1963 08  22.36   7.31  14.83 
1963 09  19.96   6.28  13.12 
1963 10   8.77   1.16   4.96 
1963 11  -1.68  -5.74  -3.70 
1963 12  -5.97 -11.16  -8.56 
1964 01  -4.35  -8.14  -6.25 
1964 02  -1.63  -8.96  -5.29 
1964 03   0.42  -7.58  -3.58 
1964 04   6.21  -2.61   1.80 
1964 05  11.09   0.08   5.58 
1964 06  16.48   3.19   9.83 
1964 07  21.56   7.01  14.28 
1964 08  17.45   5.66  11.56 
1964 09  11.67   2.66   7.16 
1964 11  -1.89  -6.76  -4.32 
1964 12  -8.79 -14.40 -11.59 
1965 01  -4.56  -8.17  -6.36 
1965 02  -3.56  -9.27  -6.41 
1965 03   1.33 -12.25  -5.46 
1965 04   9.41  -1.52   3.94 
1965 05  12.64   0.08   6.36 
