1956 12  -8.95 -18.03 -13.49 
1957 01 -14.01 -23.78 -18.89 
1957 02  -7.94 -19.29 -13.61 
1957 03  -1.24 -11.80  -6.52 
1957 04   9.28  -3.38   2.94 
1957 05  20.62   5.31  12.96 
1957 06  21.24   7.74  14.49 
1957 07  27.69  11.23  19.45 
1957 08  23.16   9.58  16.36 
1957 09  19.12   5.07  12.09 
1957 10   8.24  -3.46   2.38 
1957 11   0.42  -7.86  -3.72 
1957 12  -3.80 -14.00  -8.89 
1958 01  -4.57 -13.15  -8.85 
1958 02 -10.44 -19.83 -15.13 
1958 03  -1.65 -10.50  -6.07 
1958 04  11.91   -.11   5.90 
1958 05  21.83   5.34  13.58 
1958 06  22.31   6.86  14.58 
1958 07  24.83  10.87  17.85 
1958 08  27.15  11.01  19.08 
1958 09  18.60   5.15  11.87 
1958 10  14.04   -.96   6.54 
1958 11  -1.54 -10.88  -6.21 
1958 12  -7.33 -16.75 -12.04 
1959 01 -16.71 -25.04 -20.88 
1959 02 -10.07 -20.61 -15.34 
1959 03   3.91  -5.99  -1.03 
1959 04  11.67  -1.72   4.97 
1959 05  16.75   2.69   9.72 
1959 06  23.10   9.82  16.45 
1959 07  27.39  11.60  19.49 
1959 08  25.05   8.63  16.84 
1959 09  15.57   3.61   9.59 
1959 10   5.27  -3.27   1.00 
1959 11  -4.21 -12.34  -8.28 
1959 12  -3.26 -10.44  -6.85 
1960 01 -12.80 -23.55 -18.17 
1960 02  -9.42 -18.54 -13.98 
1960 03  -4.05 -14.61  -9.33 
1960 04   9.52  -1.51   4.00 
1960 05  18.62   3.74  11.18 
1960 06  21.32   8.04  14.68 
1960 07  28.24  12.57  20.40 
1960 08  25.40  10.32  17.86 
1960 09  21.84   4.96  13.40 
1960 10  13.29   -.65   6.32 
1960 11  -1.51 -12.34  -6.92 
1960 12  -5.97 -15.01 -10.49 
1961 01  -6.39 -16.87 -11.63 
1961 02  -5.12 -16.69 -10.90 
1961 04   8.33  -5.04   1.64 
1961 05  19.12   4.14  11.63 
1961 06  27.95  11.27  19.61 
1961 07  28.05  10.83  19.43 
1961 08  31.25  11.70  21.47 
1961 09  17.04   1.58   9.31 
1961 10   9.83  -1.67   4.08 
1961 11   -.17 -10.38  -5.27 
1961 12 -13.58 -24.56 -19.07 
1962 01  -9.22 -21.28 -15.25 
1962 02 -12.68 -23.29 -17.98 
1962 03  -4.42 -16.14 -10.28 
1962 04  12.30  -1.11   5.59 
1962 05  17.60   4.19  10.89 
1962 06  24.52   9.51  17.01 
1962 07  25.76   8.93  17.34 
1962 08  25.31   8.89  17.10 
1962 09  19.37   3.86  11.62 
1962 10  15.00   0.05   7.52 
1962 11   5.54  -5.27   0.13 
1962 12  -4.56 -14.88  -9.72 
1963 01 -13.36 -24.69 -19.02 
1963 02  -6.17 -17.23 -11.70 
1963 03   2.69  -9.10  -3.20 
1963 04  11.33  -1.91   4.71 
1963 05  17.23   2.08   9.65 
1963 06  21.80   9.43  15.61 
1963 07  27.31  12.36  19.83 
1963 08  26.05  11.28  18.66 
1963 09  22.46   7.95  15.20 
1963 10  17.95   2.13  10.04 
1963 11   2.16 -10.46  -4.15 
1963 12  -9.01 -18.24 -13.62 
1964 01  -6.77 -16.56 -11.66 
1964 02  -1.43 -13.11  -7.27 
1964 03  -3.26 -16.52  -9.89 
1964 04  12.83  -1.82   5.50 
1964 05  20.12   5.04  12.58 
1964 06  23.66   7.70  15.68 
