1971 01 99.99 -99.99  20.90 
1971 02 99.99 -99.99  20.29 
1971 03 99.99 -99.99  20.80 
1971 04 99.99 -99.99  18.20 
1971 05 99.99 -99.99  11.30 
1971 06 99.99 -99.99   7.00 
1971 07 99.99 -99.99   8.20 
1971 08 99.99 -99.99  11.50 
1971 09 99.99 -99.99  15.50 
1971 10 99.99 -99.99  18.70 
1972 01 99.99 -99.99  20.29 
1972 02 99.99 -99.99  19.50 
1972 03 99.99 -99.99  18.29 
1972 04 99.99 -99.99  15.40 
1972 05 99.99 -99.99  10.30 
1972 06 99.99 -99.99   7.20 
1972 07 99.99 -99.99   9.20 
1972 08 99.99 -99.99  10.70 
1972 09 99.99 -99.99  14.90 
1972 10 99.99 -99.99  17.79 
1973 01 99.99 -99.99  23.60 
1973 03 99.99 -99.99  19.20 
1973 04 99.99 -99.99  14.80 
1973 05 99.99 -99.99  11.10 
1973 06 99.99 -99.99  10.20 
1973 10 99.99 -99.99  16.00 
1973 12 99.99 -99.99  13.20 
1974 03 99.99 -99.99  17.29 
1974 04 99.99 -99.99  14.50 
1974 05 99.99 -99.99  11.60 
1974 06 99.99 -99.99   8.89 
1974 07 99.99 -99.99   9.50 
1974 09 99.99 -99.99  14.30 
1974 10 99.99 -99.99  14.50 
1974 11 99.99 -99.99  12.70 
1975 03 99.99 -99.99  16.90 
1975 07 99.99 -99.99   9.60 
1975 08 99.99 -99.99  11.60 
1975 09 99.99 -99.99  11.80 
1975 10 99.99 -99.99  14.80 
1975 11 99.99 -99.99  17.90 
1975 12 99.99 -99.99  18.20 
1976 01 99.99 -99.99  19.00 
1976 03 99.99 -99.99  17.50 
1976 09 99.99 -99.99  15.80 
1976 10 99.99 -99.99  14.00 
1976 11 99.99 -99.99  16.40 
1976 12 99.99 -99.99  19.90 
1977 01 99.99 -99.99  21.60 
1977 02 99.99 -99.99  21.80 
1977 03 99.99 -99.99  17.29 
1977 04 99.99 -99.99  16.50 
1977 05 99.99 -99.99  10.50 
1977 07 99.99 -99.99   9.39 
1977 08 99.99 -99.99  11.20 
1977 09 99.99 -99.99  15.20 
1977 10 99.99 -99.99  16.60 
1977 11 99.99 -99.99  18.60 
1977 12 99.99 -99.99  23.50 
1978 01 99.99 -99.99  20.60 
1978 02 99.99 -99.99  20.90 
1978 03 99.99 -99.99  19.60 
1978 04 99.99 -99.99  13.00 
1978 05 99.99 -99.99  11.70 
1978 06 99.99 -99.99   7.60 
1978 07 99.99 -99.99  10.20 
1978 08 99.99 -99.99  10.90 
1978 09 99.99 -99.99  13.30 
1978 10 99.99 -99.99  15.50 
1978 11 99.99 -99.99  20.20 
1978 12 99.99 -99.99  19.90 
1979 02 99.99 -99.99  21.00 
1979 03 99.99 -99.99  19.60 
1979 07 99.99 -99.99   7.90 
1979 08 99.99 -99.99  11.20 
1979 09 99.99 -99.99  12.90 
1979 10 99.99 -99.99  16.40 
1979 11 99.99 -99.99  18.40 
1979 12 99.99 -99.99  21.60 
1980 10 99.99 -99.99  18.10 
1980 11 99.99 -99.99  18.60 
1981 01 99.99 -99.99  22.10 
1981 02 99.99 -99.99  19.90 
1981 03 99.99 -99.99  17.29 
1981 04 99.99 -99.99  16.29 
1981 05 99.99 -99.99  12.10 
1981 06 99.99 -99.99   8.20 
1981 07 99.99 -99.99   9.20 
1981 08 99.99 -99.99   9.00 
1981 09 99.99 -99.99  12.10 
1981 10 99.99 -99.99  14.60 
1981 11 99.99 -99.99  19.10 
1981 12 99.99 -99.99  19.29 
1982 01 99.99 -99.99  21.80 
1982 02 99.99 -99.99  21.30 
1982 03 99.99 -99.99  18.60 
1982 05 99.99 -99.99  12.40 
1982 06 99.99 -99.99   9.00 
1982 07 99.99 -99.99   8.89 
1982 08 99.99 -99.99  10.70 
1982 09 99.99 -99.99  15.00 
1982 10 99.99 -99.99  16.79 
1982 11 99.99 -99.99  17.20 
1982 12 99.99 -99.99  21.10 
1983 01 99.99 -99.99  23.50 
1983 02 99.99 -99.99  20.29 
1983 03 99.99 -99.99  18.10 
1983 04 99.99 -99.99  14.20 
1983 05 99.99 -99.99  12.10 
1983 06 99.99 -99.99   7.80 
1983 07 99.99 -99.99   6.90 
1983 08 99.99 -99.99  10.50 
1983 09 99.99 -99.99  14.20 
1983 10 99.99 -99.99  15.60 
1983 11 99.99 -99.99  18.10 
1983 12 99.99 -99.99  20.50 
1984 01 99.99 -99.99  20.50 
1984 02 99.99 -99.99  22.40 
1984 03 99.99 -99.99  19.29 
1984 04 99.99 -99.99  13.90 
1984 05 99.99 -99.99  10.30 
1984 06 99.99 -99.99   8.30 
1984 07 99.99 -99.99   9.30 
1984 08 99.99 -99.99  11.10 
1984 09 99.99 -99.99  14.70 
1984 11 99.99 -99.99  18.10 
1984 12 99.99 -99.99  19.29 
1985 01 99.99 -99.99  21.70 
1985 02 99.99 -99.99  20.20 
1985 03 99.99 -99.99  16.20 
1987 01 99.99 -99.99  22.80 
1987 02 99.99 -99.99  22.10 
1987 05 99.99 -99.99  13.50 
1987 06 99.99 -99.99   7.60 
1987 07 99.99 -99.99   7.10 
1987 08 99.99 -99.99  10.10 
1987 09 99.99 -99.99  12.70 
1987 10 99.99 -99.99  16.29 
1987 11 99.99 -99.99  19.50 
1987 12 99.99 -99.99  21.10 
1988 01 99.99 -99.99  21.80 
1988 02 99.99 -99.99  20.70 
1988 03 99.99 -99.99  18.79 
1988 04 99.99 -99.99  13.30 
1988 05 99.99 -99.99  11.40 
1988 06 99.99 -99.99   7.40 
1988 07 99.99 -99.99   8.30 
1988 08 99.99 -99.99  12.00 
1988 09 99.99 -99.99  13.40 
1988 10 99.99 -99.99  14.20 
1988 11 99.99 -99.99  17.29 
1988 12 99.99 -99.99  18.10 
1989 01 99.99 -99.99  20.50 
1989 02 99.99 -99.99  18.79 
1989 03 99.99 -99.99  17.20 
1989 04 99.99 -99.99  14.20 
1989 05 99.99 -99.99  11.40 
1989 06 99.99 -99.99   7.40 
1989 07 99.99 -99.99   7.40 
1989 12 99.99 -99.99  20.20 
1990 01 99.99 -99.99  20.70 
1990 02 99.99 -99.99  18.40 
1990 03 99.99 -99.99  17.90 
1990 04 99.99 -99.99  15.10 
1990 05 99.99 -99.99  10.90 
1990 06 99.99 -99.99   7.70 
1990 07 99.99 -99.99   7.70 
1990 08 99.99 -99.99  10.60 
1990 09 99.99 -99.99  14.60 
1990 10 99.99 -99.99  16.90 
1990 11 99.99 -99.99  19.50 
1990 12 99.99 -99.99  20.90 
