1956 05 10.45   6.49   8.46 
1956 06 15.68  11.69  13.68 
1956 07 18.42  14.63  16.52 
1956 08 18.81  15.31  17.06 
1956 09 18.08  14.38  16.23 
1956 10 15.13  11.97  13.55 
1956 11 12.65   7.00   9.82 
1956 12  9.99   4.71   7.35 
1957 02  5.15    .92   3.03 
1957 03  5.59   2.24   3.91 
1957 04  8.71   4.84   6.77 
1957 05 12.22   8.52  10.37 
1957 06 17.25  12.98  15.11 
1957 07 19.75  15.96  17.85 
1957 08 20.25  16.70  18.47 
1957 09 18.78  15.96  17.37 
1957 10 14.96  11.83  13.39 
1957 11 12.55   8.39  10.47 
1957 12  9.99   4.60   7.29 
1958 01  5.65   1.82   3.73 
1958 04  9.52   5.93   7.72 
1958 05 12.77   8.18  10.48 
1958 06 15.81  11.30  13.55 
1958 07 18.60  15.00  16.79 
1958 08 20.99  16.76  18.87 
1958 09 19.26  15.34  17.29 
1958 10 14.84  10.18  12.51 
1958 11 12.98   7.62  10.29 
1958 12  4.80   -.52   2.13 
1959 01  5.68    .48   3.08 
1959 02  4.66  -1.84   1.40 
1959 04  9.43   4.19   6.82 
1959 05 14.06   8.22  11.14 
1959 06 16.09  10.84  13.46 
1959 07 19.94  14.86  17.40 
1959 08 21.02  15.68  18.35 
1959 09 20.80  15.39  18.09 
1959 10 16.94  11.39  14.16 
1959 11 12.52   7.64  10.08 
1959 12  8.37   4.26   6.31 
1960 03  4.71    .15   2.43 
1960 04  8.77   4.69   6.73 
1960 05 13.29   8.01  10.65 
1960 06 16.46  11.95  14.20 
1960 07 20.60  15.18  17.89 
1960 08 20.49  16.35  18.42 
1960 09 19.98  15.27  17.62 
1960 12  6.86    .78   3.82 
1961 02  4.82    . 6   2.44 
1961 03  5.00    .56   2.78 
1961 04  9.10   4.07   6.58 
1961 05 12.64   7.55  10.09 
1961 06 17.04  11.59  14.31 
1961 07 19.74  13.59  16.66 
1961 08 19.92  15.34  17.63 
