1972 12 -6.19 -15.49 -10.84 
1973 01 -3.14 -13.75  -8.44 
1973 02 -3.59 -16.41 -10.00 
1973 03  4.50  -5.51   -.50 
1973 04  7.85  -2.57   2.64 
1973 06 18.45   5.15  11.80 
1973 07 21.95   8.13  15.04 
1973 08 22.60  10.71  16.65 
1973 09 17.79   3.52  10.66 
1973 10 14.01   -.64   6.68 
1973 11  3.35  -5.58  -1.11 
1973 12 -4.09 -13.20  -8.64 
1974 01 -6.57 -18.35 -12.46 
1974 02 -5.36 -19.29 -12.32 
1974 03  -.12 -12.55  -6.33 
1974 04  8.43  -3.90   2.26 
1974 05 12.11    .47   6.29 
1974 06 19.76   5.65  12.70 
1974 07 24.85  10.64  17.74 
1974 08 21.59   9.97  15.78 
1974 09 15.17   3.21   9.19 
1974 10 11.26    .34   5.80 
1974 11  3.94  -4.69   -.37 
1974 12   .45  -8.46  -4.00 
1975 01 -2.58 -15.84  -9.21 
1975 02 -2.62 -14.34  -8.47 
1975 03   .33 -11.42  -5.54 
1975 04  5.74  -5.67    . 3 
1975 05 17.37   3.44  10.41 
1975 06 20.14   6.34  13.24 
