1961 04  6.81    .97   3.89 
1961 05 15.12   6.36  10.74 
1961 06 20.68  11.81  16.24 
1961 07 24.10  16.87  20.49 
1961 08 23.14  16.58  19.86 
1961 09 22.27  15.72  18.99 
1961 10 15.78   8.39  12.09 
1961 11  6.38    .83   3.60 
1961 12   .18  -4.35  -2.08 
1962 01 -3.30  -9.80  -6.55 
1962 02 -3.02 -10.43  -6.72 
1962 03  3.14  -2.90    .12 
1962 04 10.89   2.21   6.55 
1962 05 18.79   9.87  14.33 
1962 06 22.07  14.48  18.27 
1962 07 22.71  15.41  19.06 
1962 08 23.46  16.24  19.84 
1962 09 18.27  11.17  14.72 
1962 10 13.76   7.46  10.61 
1962 12  -.83 -99.99 -99.99 
1963 01 -4.92  -9.82  -7.37 
1963 02 -4.98 -11.00  -7.99 
1963 03  4.55  -3.46    .54 
1963 04 99.99   1.79 -99.99 
1963 05 14.67   6.48  10.57 
1963 06 22.30  14.19  18.24 
1963 07 24.24  17.15  20.69 
1963 08 21.54  14.32  17.93 
1963 09 17.87   9.53  13.70 
1963 10 18.08   9.34  13.71 
1963 11  8.85   3.64   6.24 
1963 12 -3.30  -9.47  -6.38 
1964 01   .11  -5.79  -2.84 
1964 02 -1.13  -7.66  -4.39 
1964 03  3.20  -3.30    .-4 
1964 04  8.47   1.71   5.09 
1964 05 18.20   9.45  13.83 
1964 06 21.33  12.60  16.96 
1964 07 24.69  17.75  21.22 
1964 08 20.64  13.91  17.27 
1964 09 18.79  11.54  15.16 
1964 10 13.01   5.18   9.09 
1964 11  7.74   2.13   4.93 
1964 12   .90  -4.42  -1.76 
1965 01 -2.86  -9.32  -6.08 
1965 02 -1.43  -8.46  -4.94 
1965 03   .36  -4.65  -2.14 
1965 04  7.69    . 2   3.85 
1965 05 17.14   8.27  12.70 
1965 06 21.11  12.11  16.61 
1965 07 22.03  13.95  17.99 
1965 08 21.94  14.83  18.38 
1965 09 18.77  12.32  15.54 
1965 10 11.35   5.13   8.24 
1965 11  6.45    .58   3.52 
1965 12  3.08  -2.01    .53 
1966 01 -2.85  -9.75  -6.30 
1966 02 -1.60  -5.93  -3.76 
1966 03  3.75  -2.09    .82 
1966 04  7.64   1.50   4.56 
1966 05 13.80   5.63   9.71 
1966 06 22.98  14.08  18.52 
1966 07 26.48  17.98  22.23 
1966 08 23.44  16.35  19.89 
1966 09 19.27  11.78  15.52 
1966 10 12.64   5.85   9.24 
1966 11  7.92   2.06   4.98 
1966 12  1.07  -5.17  -2.05 
1967 01  1.75  -4.53  -1.39 
1967 02 -3.16 -11.14  -7.15 
1967 03  2.25  -4.44  -1.09 
1967 04  9.66   1.70   5.68 
1967 05 12.02   5.05   8.53 
1967 06 22.59  15.64  19.11 
1967 07 22.58  16.65  19.61 
1967 08 22.19  16.42  19.30 
1967 09 19.02  11.50  15.26 
1967 10 12.78   6.92   9.85 
1967 11  4.36   -.32   2.02 
1967 12  1.95  -2.65   -.35 
1968 01 -3.90  -9.95  -6.92 
1968 02 -3.76 -10.00  -6.88 
1968 03  5.24  -1.86   1.68 
1968 04 12.12   3.60   7.85 
1968 05 13.16   6.54   9.85 
1968 06 20.50  11.95  16.22 
1968 07 24.19  16.08  20.13 
1968 08 23.61  15.49  19.54 
1968 09 20.00  14.65  17.32 
1968 10 14.18   7.97  11.07 
1968 11  6.01   1.14   3.57 
1968 12  -.85  -5.84  -3.34 
1969 01 -1.37  -7.15  -4.26 
1969 02  -.37  -5.78  -3.07 
1969 03  1.76  -4.37  -1.30 
1969 04 10.87   2.87   6.87 
1969 05 15.81   7.59  11.70 
1969 06 19.77  12.59  16.18 
1969 07 24.34  17.79  21.07 
1969 08 25.37  17.75  21.56 
1969 09 20.59  13.48  17.03 
1969 10 12.82   6.63   9.72 
1969 11  6.11   1.50   3.80 
1969 12 -2.84  -7.18  -5.00 
1970 01 99.99 -11.35 -99.99 
1970 04 11.41   2.83   7.12 
1970 05 15.41   7.05  11.23 
1970 06 22.72  13.68  18.20 
1970 07 24.38  16.68  20.53 
1970 08 24.79  16.66  20.72 
1970 09 19.54  12.67  16.11 
1970 10 13.38   8.31  10.84 
1970 11  7.63   3.02   5.32 
1970 12  -.50  -6.38  -3.44 
1971 01 -4.48 -11.26  -7.87 
1971 02  -.73  -6.75  -3.74 
1971 03  1.00  -4.78  -1.89 
1971 04  8.50    .73   4.61 
1971 05 16.62   7.14  11.88 
1971 06 22.20  13.53  17.86 
