1971 10 99.99 -99.99    .80 
1971 11 99.99 -99.99  -2.20 
1971 12 99.99 -99.99 -12.80 
1972 02 99.99 -99.99  -8.70 
1972 03 99.99 -99.99  -1.10 
1972 04 99.99 -99.99   -.10 
1972 05 99.99 -99.99   6.20 
1972 06 99.99 -99.99  10.10 
1972 07 99.99 -99.99  11.70 
1972 08 99.99 -99.99  13.20 
1972 09 99.99 -99.99   4.60 
1972 10 99.99 -99.99    .90 
1972 11 99.99 -99.99  -3.30 
1972 12 99.99 -99.99 -11.40 
1973 01 99.99 -99.99 -10.40 
1973 02 99.99 -99.99  -5.60 
1973 03 99.99 -99.99  -1.20 
1973 04 99.99 -99.99   1.80 
1973 05 99.99 -99.99   5.40 
1973 06 99.99 -99.99   8.80 
1973 07 99.99 -99.99  12.50 
1973 08 99.99 -99.99  12.80 
1973 09 99.99 -99.99   9.50 
1973 10 99.99 -99.99   1.60 
1973 11 99.99 -99.99  -8.30 
1973 12 99.99 -99.99  -6.30 
1974 01 99.99 -99.99 -12.20 
1974 02 99.99 -99.99  -4.80 
1974 03 99.99 -99.99  -3.60 
1974 04 99.99 -99.99   2.70 
1974 05 99.99 -99.99   4.10 
1974 06 99.99 -99.99  10.20 
1974 07 99.99 -99.99  11.20 
1974 08 99.99 -99.99  13.40 
1974 09 99.99 -99.99   9.60 
1974 10 99.99 -99.99   2.70 
1974 11 99.99 -99.99  -4.00 
1974 12 99.99 -99.99  -5.40 
1975 02 99.99 -99.99 -14.00 
1975 03 99.99 -99.99  -6.20 
1975 04 99.99 -99.99   1.10 
1975 05 99.99 -99.99   5.10 
1975 06 99.99 -99.99   8.20 
1975 07 99.99 -99.99  14.90 
1975 08 99.99 -99.99   9.60 
1975 09 99.99 -99.99   9.39 
1975 10 99.99 -99.99   2.20 
