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    .39   8.97 
1972 10 14.84  -2.43   6.20 
1972 11  3.57  -2.54    .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    .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    .-5 
1973 12  1.76  -2.47   -.35 
