1956 12  -6.20 -13.10  -9.64 
1957 01 -14.63 -24.13 -19.37 
1957 02  -6.09 -18.00 -12.04 
1957 03   3.87  -8.92  -2.52 
1957 04   9.66  -2.94   3.36 
1957 05  19.82   1.47  10.64 
1957 06  18.83   4.67  11.75 
1957 07  18.54   5.72  12.13 
1957 08  18.96   5.45  12.20 
1957 09  17.52   2.40   9.96 
1957 10   7.11  -4.03   1.54 
1957 11   0.80  -6.07  -2.63 
1957 12  -3.42 -10.09  -6.75 
1958 01  -2.15  -9.13  -5.64 
1958 02  -2.33 -10.64  -6.48 
1958 03   4.05  -9.35  -2.65 
1958 04   8.89  -2.24   3.33 
1958 05  20.15   0.90  10.52 
1958 06  23.13   5.32  14.22 
1958 07  25.14   6.56  15.85 
1958 08  22.81   5.87  14.34 
1958 09  13.63   2.94   8.28 
1958 10  10.16  -1.58   4.29 
1958 11  -2.49  -9.85  -6.17 
1958 12  -4.78 -11.43  -8.10 
1959 01  -8.38 -16.62 -12.50 
1959 02  -3.15 -14.70  -8.92 
1959 03   3.54  -6.95  -1.70 
1959 04   8.89  -4.10   2.39 
1959 05  14.76   -.62   7.07 
1959 06  18.24   4.07  11.15 
1959 07  22.69   4.96  13.82 
1959 08  15.52   4.12   9.82 
1959 09  13.52   2.54   8.03 
1959 10   6.99  -1.42   2.78 
1959 11  -2.99 -10.77  -6.88 
1959 12  -3.76 -10.43  -7.09 
1960 01  -9.16 -18.46 -13.81 
1960 02  -1.46 -12.58  -7.02 
1960 03   3.90  -9.47  -2.78 
1960 04 -99.99  -2.81 -99.99 
1960 05  12.68   0.15   6.41 
1960 06  16.36   4.15  10.25 
1960 07  25.57   4.94  15.26 
1960 08  19.84   6.12  12.98 
1960 09  16.49   0.35   8.42 
1960 10   9.80   0.67   5.23 
1960 11  -1.25  -8.66  -4.95 
1960 12  -5.07 -11.16  -8.11 
1961 01  -4.37 -12.73  -8.54 
1961 02   0.12  -8.66  -4.27 
1961 03   5.97  -7.09   -.56 
1961 04   8.74  -3.77   2.48 
1961 05  17.85   0.41   9.13 
1961 06  23.04   4.42  13.73 
1961 07  23.36   7.03  15.19 
1961 08  24.53   5.79  15.16 
1961 09  12.59  -0.09   6.25 
1961 10   5.53  -1.88   1.82 
1961 11  -3.06 -10.40  -6.72 
1961 12  -8.34 -15.82 -12.08 
1962 01  -8.59 -17.74 -13.16 
1962 02  -3.49 -15.10  -9.29 
1962 03   2.08 -11.53  -4.72 
1962 04  10.07  -2.07   4.00 
1962 05  14.09   -.16   6.96 
1962 06  17.98   2.81  10.39 
1962 07  20.99   4.32  12.65 
1962 08  18.42   5.61  12.01 
1962 09  16.39   1.11   8.75 
1962 10   9.64   0.15   4.89 
1962 11   2.41  -3.35   -.46 
1962 12  -2.66  -9.18  -5.92 
1963 01 -11.09 -20.06 -15.57 
1963 02   2.23  -6.21  -1.99 
1963 03   4.46  -6.04   -.78 
1963 04   9.37  -3.12   3.12 
1963 05  15.41   -.98   7.21 
1963 06  18.48   2.81  10.64 
1963 07  20.15   5.94  13.04 
1963 08  21.57   5.60  13.58 
1963 09  19.39   5.25  12.32 
1963 10   9.34   0.31   4.82 
1963 11  -1.36  -7.75  -4.55 
1963 12  -6.02 -13.44  -9.72 
1964 01  -5.65 -12.50  -9.07 
1964 02   0.48  -9.97  -4.75 
1964 03   1.81 -10.48  -4.33 
1964 04   7.11  -3.84   1.63 
1964 05  14.23  -0.05   7.08 
1964 06  18.73   3.17  10.95 
1964 07  21.23   6.28  13.75 
1964 08  17.99   4.38  11.18 
1964 09  12.62   0.11   6.36 
1964 10  10.24  -1.82   4.21 
1964 11  -2.20  -8.09  -5.14 
1964 12 -12.56 -20.32 -16.44 
1965 01  -8.96 -16.27 -12.61 
1965 02  -3.31 -13.80  -8.55 
1965 03   1.80 -16.18  -7.19 
1965 04   9.47  -3.51   2.98 
1965 05  14.09   -.91   6.59 
1965 06  19.20   1.66  10.43 
1965 07  22.54   5.59  14.06 
1965 08  22.68   7.05  14.86 
1965 09  12.80   -.31   6.24 
1965 10   9.47  -1.70   3.88 
1965 11  -1.09  -8.32  -4.70 
1965 12  -8.18 -13.86 -11.02 
1966 01 -10.52 -18.42 -14.47 
1966 02   -.38 -10.27  -5.32 
1966 03   4.32  -8.06  -1.87 
1966 04   6.88  -5.63   0.62 
1966 05  15.05   0.14   7.59 
1966 06  17.39   3.31  10.35 
1966 07  19.94   5.93  12.93 
1966 08  19.24   5.26  12.25 
1966 09  17.14   3.91  10.52 
1966 10   7.88  -1.53   3.17 
1966 11  -2.46  -8.64  -5.55 
1966 12  -5.32 -10.59  -7.95 
1967 01  -6.28 -13.51  -9.89 
1967 02   -.51 -10.54  -5.52 
1967 03   0.55 -11.24  -5.34 
1967 04   7.87  -4.67   1.59 
1967 05  13.53  -0.06   6.73 
1967 06  21.33   3.49  12.41 
1967 07  21.89   4.94  13.42 
1967 08  24.84   5.11  14.97 
1967 09  19.62   3.58  11.60 
1967 10   7.28   -.47   3.40 
1967 11   0.19  -7.03  -3.42 
1967 12  -5.22 -12.97  -9.09 
1968 01  -7.79 -15.03 -11.41 
1968 02   0.17 -14.77  -7.30 
1968 03   5.19  -5.00   0.09 
1968 04   5.44  -4.63   0.40 
1968 05  14.45   -.19   7.13 
1968 06  16.35   4.46  10.40 
1968 07 -99.99   5.91 -99.99 
1968 08 -99.99   5.87 -99.99 
1968 09  14.48   3.22   8.84 
1968 10   6.76   -.98   2.89 
1968 11   0.09  -6.87  -3.39 
1968 12 -11.42 -17.59 -14.50 
1969 01 -19.29 -28.11 -23.70 
1969 02  -2.15 -15.08  -8.61 
1969 03   5.02  -7.63  -1.30 
1969 04  10.48  -1.39   4.54 
1969 05  16.79   1.00   8.89 
1969 06  22.42   6.11  14.26 
