1970 12   -.58  -8.38  -4.48 
1971 01   -.46  -8.18  -4.32 
1971 02   3.01  -7.34  -2.16 
1971 03   4.37  -6.73  -1.18 
1971 04  12.72  -1.93   5.39 
1971 05  19.58   2.61  11.09 
1971 06  18.29   5.51  11.90 
1971 07  26.84   6.81  16.82 
1971 08  30.81   7.63  19.21 
1971 09  17.76   1.53   9.64 
1971 10  11.94  -3.07   4.43 
1971 11   3.26  -4.26   -.50 
1971 12  -1.78 -11.20  -6.49 
1972 01  -2.84 -14.08  -8.46 
1972 02   2.76  -7.06  -2.15 
1972 03   7.52  -3.99   1.76 
1972 04  10.22  -3.63   3.29 
1972 05  18.91   2.36  10.64 
1972 06  20.61   5.81  13.21 
1972 07  24.48   6.00  15.24 
1972 08  27.94   7.73  17.83 
1972 09  17.57   0.39   8.97 
1972 10  14.84  -2.43   6.20 
1972 11   3.57  -2.54   0.51 
1972 12  -2.01 -10.29  -6.15 
1973 01  -1.02 -11.52  -6.27 
1973 02   4.39  -7.18  -1.39 
1973 03   8.58  -2.90   2.84 
1973 04  14.61   0.82   7.71 
1973 05  20.45   4.13  12.29 
1973 06  22.91   7.43  15.17 
1973 07  29.16   9.34  19.25 
1973 08  29.27   8.96  19.11 
1973 09  21.78   5.24  13.51 
1973 10  11.68   2.16   6.92 
1973 11   2.66  -2.78  -0.05 
1973 12   1.76  -2.47   -.35 
