1956 11  6.23 -99.99 -99.99 
1956 12  -.83 -12.08  -6.45 
1957 01 -7.78 -22.75 -15.26 
1957 02  -.47 -17.11  -8.79 
1957 03  3.33 -10.26  -3.46 
1957 04  9.59  -3.72   2.93 
1957 05 16.95   2.24   9.59 
1957 06 23.87  10.03  16.95 
1957 07 22.33   9.31  15.82 
1957 08 22.16   5.95  14.05 
1957 09 20.07   5.54  12.80 
1957 10 12.53    .25   6.39 
1957 11  5.73  -2.78   1.47 
1957 12   .46  -9.72  -4.63 
1958 01 -3.52 -13.02  -8.27 
1958 02 -5.34 -18.37 -11.86 
1958 03  3.60  -5.68  -1.04 
1958 04  9.51  -2.81   3.35 
1958 05 13.77    .86   7.31 
1958 06 17.56   4.55  11.05 
1958 07 22.55  10.00  16.27 
1958 08 23.01   8.17  15.59 
1958 09 18.44   5.49  11.96 
1958 10  9.83  -1.01   4.41 
1958 11  3.58  -4.51   -.46 
1959 01 -6.67 -18.74 -12.70 
1959 02 -7.22 -23.95 -15.58 
1959 03   .42 -14.26  -6.92 
1959 04  8.54  -3.80   2.36 
1959 05 17.12   3.10  10.11 
1959 06 18.11   8.85  13.48 
1959 07 24.78  11.03  17.90 
1959 08 24.19  11.88  18.03 
1959 09 20.29   6.37  13.33 
1959 10 11.62   1.23   6.42 
1959 11  4.02  -4.59   -.28 
1959 12 -2.08 -11.54  -6.81 
1960 01 -4.42 -17.51 -10.97 
1960 02 -1.36 -12.23  -6.79 
1960 03  -.79 -12.67  -6.73 
1960 04  8.13  -2.51   2.81 
1960 05 19.07   4.42  11.75 
1960 06 22.29   9.13  15.71 
1960 07 22.89   9.55  16.21 
1960 08 24.02   7.95  15.98 
1960 09 19.65   6.00  12.82 
1960 10 11.79   -.95   5.42 
