1975 06 99.99 -99.99  14.60 
1976 03 99.99 -99.99    .90 
1976 05 99.99 -99.99  11.50 
1976 06 99.99 -99.99  13.60 
1976 07 99.99 -99.99  16.00 
1976 08 99.99 -99.99  13.50 
1976 09 99.99 -99.99  11.90 
1976 10 99.99 -99.99  10.20 
1977 02 99.99 -99.99   3.80 
1977 03 99.99 -99.99   5.20 
1977 04 99.99 -99.99   7.20 
1977 05 99.99 -99.99  11.60 
1977 06 99.99 -99.99  13.60 
1977 09 99.99 -99.99  11.90 
1977 10 99.99 -99.99   8.89 
1978 03 99.99 -99.99   3.90 
1978 04 99.99 -99.99   6.40 
1978 05 99.99 -99.99  10.30 
1978 06 99.99 -99.99  14.90 
1978 07 99.99 -99.99  15.30 
1978 08 99.99 -99.99  15.80 
1978 09 99.99 -99.99  10.90 
1978 10 99.99 -99.99   7.90 
1978 11 99.99 -99.99   2.20 
1978 12 99.99 -99.99   1.90 
1979 01 99.99 -99.99  -1.70 
1979 02 99.99 -99.99   1.80 
1979 03 99.99 -99.99   5.00 
1979 04 99.99 -99.99   5.30 
1979 05 99.99 -99.99  11.80 
1979 06 99.99 -99.99  15.90 
1979 07 99.99 -99.99  15.00 
1979 08 99.99 -99.99  14.40 
1979 09 99.99 -99.99  13.10 
1979 10 99.99 -99.99   9.30 
1979 11 99.99 -99.99   4.90 
1979 12 99.99 -99.99   2.90 
1980 01 99.99 -99.99  -3.50 
1980 02 99.99 -99.99    .50 
1980 03 99.99 -99.99   2.40 
1980 04 99.99 -99.99   4.69 
1980 05 99.99 -99.99   8.70 
1980 06 99.99 -99.99  13.60 
1980 07 99.99 -99.99  15.40 
1980 08 99.99 -99.99  16.40 
1980 09 99.99 -99.99  13.00 
1980 10 99.99 -99.99   8.89 
1980 11 99.99 -99.99   5.50 
1980 12 99.99 -99.99  -2.40 
1981 01 99.99 -99.99  -6.20 
1981 02 99.99 -99.99  -1.30 
1981 03 99.99 -99.99   5.00 
1981 04 99.99 -99.99   6.80 
1981 05 99.99 -99.99  10.80 
1981 06 99.99 -99.99  15.80 
1981 08 99.99 -99.99  16.29 
1981 09 99.99 -99.99  13.60 
1981 10 99.99 -99.99  10.50 
1981 11 99.99 -99.99   1.30 
1981 12 99.99 -99.99    .30 
1982 01 99.99 -99.99    .10 
1982 02 99.99 -99.99  -1.30 
1982 03 99.99 -99.99   1.80 
1982 04 99.99 -99.99   6.20 
1982 05 99.99 -99.99  12.00 
1982 06 99.99 -99.99  15.60 
1982 07 99.99 -99.99  16.10 
1982 09 99.99 -99.99  16.10 
1982 10 99.99 -99.99  10.30 
1982 11 99.99 -99.99   3.90 
1982 12 99.99 -99.99   2.20 
1987 05 99.99 -99.99   9.20 
1991 04 99.99 -99.99   5.80 
1991 05 99.99 -99.99   8.00 
1991 09 99.99 -99.99  13.90 
1991 11 99.99 -99.99   5.30 
1992 01 99.99 -99.99  -1.00 
1992 03 99.99 -99.99   2.80 
1992 08 99.99 -99.99  19.40 
1992 09 99.99 -99.99  13.50 
1992 10 99.99 -99.99  11.40 
