1975 05 99.99 -99.99  15.50 
1975 06 99.99 -99.99  17.00 
1975 08 99.99 -99.99  19.20 
1975 09 99.99 -99.99  17.79 
1975 10 99.99 -99.99  10.10 
1975 11 99.99 -99.99   4.30 
1975 12 99.99 -99.99    .40 
1976 01 99.99 -99.99   1.40 
1976 02 99.99 -99.99    .30 
1976 03 99.99 -99.99   1.90 
1976 04 99.99 -99.99  10.10 
1976 05 99.99 -99.99  14.10 
1976 06 99.99 -99.99  18.10 
1976 07 99.99 -99.99  20.20 
1976 08 99.99 -99.99  16.50 
1976 09 99.99 -99.99  14.80 
1976 10 99.99 -99.99  11.50 
1976 11 99.99 -99.99   6.60 
1976 12 99.99 -99.99    .80 
1977 01 99.99 -99.99   1.40 
1977 02 99.99 -99.99   4.60 
1977 03 99.99 -99.99   8.20 
1977 04 99.99 -99.99   8.39 
1977 05 99.99 -99.99  14.80 
1977 06 99.99 -99.99  18.90 
1977 07 99.99 -99.99  20.00 
1977 09 99.99 -99.99  13.50 
1977 10 99.99 -99.99  11.80 
1977 11 99.99 -99.99   6.90 
1977 12 99.99 -99.99   -.30 
1978 01 99.99 -99.99    .40 
1978 02 99.99 -99.99    .80 
1978 03 99.99 -99.99   7.50 
1978 04 99.99 -99.99   8.70 
1978 05 99.99 -99.99  13.50 
1978 06 99.99 -99.99  17.20 
1978 07 99.99 -99.99  18.00 
1978 08 99.99 -99.99  17.29 
1978 09 99.99 -99.99  14.50 
1978 10 99.99 -99.99   9.89 
1978 11 99.99 -99.99   1.40 
1978 12 99.99 -99.99    .50 
1979 01 99.99 -99.99  -2.20 
1979 02 99.99 -99.99   2.09 
1979 03 99.99 -99.99   8.20 
1979 04 99.99 -99.99   8.89 
1979 05 99.99 -99.99  14.90 
1979 06 99.99 -99.99  20.50 
1979 07 99.99 -99.99  18.50 
1979 08 99.99 -99.99  17.70 
1979 09 99.99 -99.99  15.30 
1979 10 99.99 -99.99   9.00 
1979 11 99.99 -99.99   5.50 
1979 12 99.99 -99.99   4.19 
1980 01 99.99 -99.99  -3.40 
1980 02 99.99 -99.99   3.30 
1980 03 99.99 -99.99   5.70 
1980 04 99.99 -99.99   8.20 
1980 05 99.99 -99.99  12.20 
1980 06 99.99 -99.99  17.70 
1980 07 99.99 -99.99  18.50 
1980 08 99.99 -99.99  19.40 
1980 09 99.99 -99.99  15.50 
1980 10 99.99 -99.99  10.10 
1980 11 99.99 -99.99   3.80 
1980 12 99.99 -99.99   -.50 
1981 01 99.99 -99.99  -2.00 
1981 02 99.99 -99.99   1.30 
1981 03 99.99 -99.99   8.80 
1981 04 99.99 -99.99  10.30 
1981 05 99.99 -99.99  14.60 
1981 06 99.99 -99.99  18.60 
1981 07 99.99 -99.99  19.10 
1981 08 99.99 -99.99  18.60 
1981 09 99.99 -99.99  16.70 
1981 10 99.99 -99.99  13.00 
1981 11 99.99 -99.99   5.30 
1981 12 99.99 -99.99    .60 
1982 01 99.99 -99.99  -2.70 
1982 02 99.99 -99.99  -1.10 
1982 03 99.99 -99.99   5.40 
1982 04 99.99 -99.99   8.20 
1982 05 99.99 -99.99  15.30 
1982 06 99.99 -99.99  19.20 
1982 07 99.99 -99.99  20.60 
1982 08 99.99 -99.99  19.29 
1982 09 99.99 -99.99  18.40 
1982 10 99.99 -99.99  11.50 
1982 11 99.99 -99.99   6.20 
1982 12 99.99 -99.99   3.80 
1986 10 99.99 -99.99  10.60 
1987 05 99.99 -99.99  13.50 
1991 03 99.99 -99.99   8.20 
1991 04 99.99 -99.99   8.60 
1991 05 99.99 -99.99  11.90 
1991 06 99.99 -99.99  18.00 
1991 07 99.99 -99.99  21.40 
1991 08 99.99 -99.99  20.29 
