1957 01 -12.67 -25.58 -19.12 
1957 02  -9.43 -23.80 -16.61 
1957 03   0.54 -15.32  -7.39 
1957 04  10.14  -4.19   2.97 
1957 05  17.21   3.13  10.17 
1957 06  20.29   3.15  11.72 
1957 07  23.10   8.92  16.01 
1957 08  20.49   6.71  13.60 
1957 09  17.02   4.46  10.74 
1957 10   7.91  -3.82   2.04 
1957 11   -.30  -8.84  -4.57 
1957 12  -8.17 -17.69 -12.93 
1958 01  -6.71 -14.81 -10.76 
1958 02 -10.47 -21.49 -15.98 
1958 03   -.46 -12.72  -6.59 
1958 04   9.55   -.93   4.31 
1958 05  19.12   3.57  11.35 
1958 06  19.04   4.06  11.55 
1958 07  23.44   7.98  15.71 
1958 08  23.25   7.80  15.52 
1958 09  15.30   2.16   8.73 
1958 10  11.11  -2.53   4.29 
1958 11  -2.17 -12.56  -7.36 
1958 12  -9.34 -18.95 -14.14 
1959 01 -19.12 -30.25 -24.68 
1959 02  -7.21 -23.00 -15.10 
1959 03   3.09  -9.85  -3.38 
1959 04  10.92  -1.91   4.50 
1959 05  14.13   -.58   6.77 
1959 06  20.20   6.92  13.56 
1959 07  23.65   9.74  16.69 
1959 08  18.08   6.65  12.36 
1959 09  14.17   2.56   8.36 
1959 10   5.13  -3.18   0.97 
1959 11  -4.62 -14.19  -9.40 
1959 12  -3.05 -13.29  -8.17 
1960 01 -12.93 -25.31 -19.11 
1960 02 -99.99 -21.18 -99.99 
1960 03  -3.79 -17.56 -10.67 
1960 04   9.71  -2.21   3.75 
1960 05  15.29   3.43   9.35 
1960 06  18.17   7.08  12.62 
1960 07  25.10   9.97  17.53 
1960 08  21.50   8.57  15.03 
1960 09  17.04   3.72  10.38 
1960 10  10.34  -2.13   4.10 
1960 11  -2.77 -13.53  -8.14 
