1971 04 99.99 -99.99  14.40 
1971 05 99.99 -99.99  15.60 
1971 06 99.99 -99.99  15.60 
1971 07 99.99 -99.99  15.50 
1971 08 99.99 -99.99  14.80 
1971 09 99.99 -99.99  14.40 
1971 10 99.99 -99.99  15.60 
1971 11 99.99 -99.99  16.20 
1971 12 99.99 -99.99  15.80 
1972 01 99.99 -99.99  15.30 
1972 02 99.99 -99.99  15.90 
1972 03 99.99 -99.99  15.20 
1972 04 99.99 -99.99  15.90 
1972 05 99.99 -99.99  16.29 
1972 06 99.99 -99.99  16.79 
1972 07 99.99 -99.99  16.79 
1972 08 99.99 -99.99  16.79 
1972 09 99.99 -99.99  17.70 
1972 10 99.99 -99.99  17.79 
1972 11 99.99 -99.99  17.60 
1972 12 99.99 -99.99  17.40 
1973 01 99.99 -99.99  17.60 
1973 02 99.99 -99.99  16.29 
1973 03 99.99 -99.99  16.79 
1973 04 99.99 -99.99  16.29 
1973 05 99.99 -99.99  16.70 
1973 06 99.99 -99.99  16.29 
1973 07 99.99 -99.99  15.90 
1973 08 99.99 -99.99  16.00 
1973 09 99.99 -99.99  16.40 
1973 10 99.99 -99.99  16.20 
1973 11 99.99 -99.99  16.60 
1973 12 99.99 -99.99  14.30 
1974 01 99.99 -99.99  14.60 
1974 02 99.99 -99.99  14.50 
1974 03 99.99 -99.99  14.80 
1974 04 99.99 -99.99  15.60 
1974 05 99.99 -99.99  16.50 
1974 06 99.99 -99.99  15.10 
1974 07 99.99 -99.99  13.30 
1974 08 99.99 -99.99  13.70 
1974 09 99.99 -99.99  15.10 
1974 10 99.99 -99.99  17.29 
1974 11 99.99 -99.99  18.00 
1974 12 99.99 -99.99  17.79 
1975 01 99.99 -99.99  16.79 
1975 02 99.99 -99.99  15.90 
1975 03 99.99 -99.99  16.00 
1975 04 99.99 -99.99  16.60 
1975 05 99.99 -99.99  15.40 
1975 06 99.99 -99.99  16.10 
1975 07 99.99 -99.99  15.30 
1975 08 99.99 -99.99  15.90 
1975 09 99.99 -99.99  16.50 
1975 10 99.99 -99.99  16.40 
1975 11 99.99 -99.99  16.00 
1975 12 99.99 -99.99  16.00 
1976 01 99.99 -99.99  15.40 
1976 02 99.99 -99.99  15.40 
1976 03 99.99 -99.99  15.90 
1976 04 99.99 -99.99  16.20 
1976 05 99.99 -99.99  17.00 
1976 06 99.99 -99.99  16.20 
1976 07 99.99 -99.99  16.60 
1976 08 99.99 -99.99  16.60 
1976 09 99.99 -99.99  17.60 
1976 10 99.99 -99.99  17.60 
1976 11 99.99 -99.99  18.10 
1976 12 99.99 -99.99  17.60 
1977 01 99.99 -99.99  17.20 
1977 02 99.99 -99.99  16.10 
1977 03 99.99 -99.99  16.90 
1977 04 99.99 -99.99  17.20 
1977 05 99.99 -99.99  16.79 
1977 06 99.99 -99.99  16.60 
1977 07 99.99 -99.99  16.60 
1977 08 99.99 -99.99  16.79 
1977 09 99.99 -99.99  17.40 
1977 10 99.99 -99.99  17.79 
1977 11 99.99 -99.99  16.60 
1977 12 99.99 -99.99  17.40 
1978 01 99.99 -99.99  17.00 
1978 02 99.99 -99.99  16.79 
1978 03 99.99 -99.99  16.60 
1978 04 99.99 -99.99  17.20 
1978 05 99.99 -99.99  17.20 
1978 06 99.99 -99.99  16.40 
1978 07 99.99 -99.99  16.00 
1978 08 99.99 -99.99  16.60 
1978 09 99.99 -99.99  16.60 
1978 10 99.99 -99.99  16.70 
1978 11 99.99 -99.99  17.00 
1978 12 99.99 -99.99  17.50 
1979 01 99.99 -99.99  16.70 
1979 02 99.99 -99.99  16.00 
1979 03 99.99 -99.99  16.60 
1979 04 99.99 -99.99  16.79 
1979 05 99.99 -99.99  16.90 
1979 06 99.99 -99.99  16.40 
1979 07 99.99 -99.99  16.10 
1979 08 99.99 -99.99  16.90 
1979 09 99.99 -99.99  16.20 
1979 10 99.99 -99.99  18.10 
1979 11 99.99 -99.99  17.40 
1979 12 99.99 -99.99  17.29 
1980 01 99.99 -99.99  16.50 
1980 02 99.99 -99.99  16.40 
1980 03 99.99 -99.99  17.10 
1980 04 99.99 -99.99  16.79 
1980 05 99.99 -99.99  17.60 
1980 06 99.99 -99.99  17.40 
1980 07 99.99 -99.99  16.60 
1980 08 99.99 -99.99  16.20 
1980 09 99.99 -99.99  17.50 
1980 10 99.99 -99.99  15.80 
1980 11 99.99 -99.99  16.29 
1980 12 99.99 -99.99  16.29 
1987 01 99.99 -99.99  18.79 
1987 02 99.99 -99.99  19.70 
1987 03 99.99 -99.99  19.10 
1987 04 99.99 -99.99  19.70 
1987 05 99.99 -99.99  19.29 
1987 06 99.99 -99.99  20.10 
1987 07 99.99 -99.99  19.50 
1987 09 99.99 -99.99  20.60 
1987 11 99.99 -99.99  20.80 
1987 12 99.99 -99.99  11.90 
1988 01 99.99 -99.99  16.90 
1988 02 99.99 -99.99  16.60 
1988 03 99.99 -99.99  16.70 
1988 04 99.99 -99.99  16.60 
1988 05 99.99 -99.99  17.29 
1988 06 99.99 -99.99  16.00 
1988 07 99.99 -99.99  16.00 
1988 08 99.99 -99.99  16.60 
1988 09 99.99 -99.99  17.40 
1988 10 99.99 -99.99  17.29 
1988 11 99.99 -99.99  17.10 
1989 01 99.99 -99.99  15.90 
1989 02 99.99 -99.99  15.70 
1989 03 99.99 -99.99  15.00 
1989 04 99.99 -99.99  17.79 
1989 08 99.99 -99.99  20.70 
1989 09 99.99 -99.99  20.70 
1989 10 99.99 -99.99  19.79 
1989 11 99.99 -99.99  20.20 
1990 01 99.99 -99.99  19.60 
1990 02 99.99 -99.99  19.20 
1990 03 99.99 -99.99  18.50 
1990 04 99.99 -99.99  20.00 
1990 05 99.99 -99.99  20.00 
1990 06 99.99 -99.99  19.70 
1990 09 99.99 -99.99  21.20 
1991 01 99.99 -99.99  19.60 
1991 02 99.99 -99.99  19.79 
1991 03 99.99 -99.99  17.90 
1991 04 99.99 -99.99  19.20 
1991 07 99.99 -99.99  18.29 
1991 09 99.99 -99.99  20.10 
1991 10 99.99 -99.99  18.70 
1992 01 99.99 -99.99  19.10 
1992 12 99.99 -99.99  17.79 
1993 01 99.99 -99.99  16.40 
1993 09 99.99 -99.99  17.10 
1993 10 99.99 -99.99  17.10 
1993 12 99.99 -99.99  16.10 
1994 01 99.99 -99.99  16.70 
1994 02 99.99 -99.99  15.90 
1994 05 99.99 -99.99  16.79 
1994 06 99.99 -99.99  16.60 
1994 07 99.99 -99.99  16.29 
1994 08 99.99 -99.99  17.00 
1994 09 99.99 -99.99  17.00 
1994 11 99.99 -99.99  17.20 
1994 12 99.99 -99.99  17.60 
1995 03 99.99 -99.99  17.10 
1995 04 99.99 -99.99  17.90 
1995 05 99.99 -99.99  17.60 
1995 07 99.99 -99.99  17.00 
1995 08 99.99 -99.99  17.10 
1995 09 99.99 -99.99  18.00 
1995 10 99.99 -99.99  18.29 
1995 12 99.99 -99.99  17.60 
1996 01 99.99 -99.99  15.80 
1996 02 99.99 -99.99  16.50 
1996 04 99.99 -99.99  17.00 
1996 05 99.99 -99.99  17.29 
1996 06 99.99 -99.99  16.70 
1996 07 99.99 -99.99  16.60 
1996 08 99.99 -99.99  17.50 
1996 10 99.99 -99.99  17.60 
1996 12 99.99 -99.99  17.50 
1997 02 99.99 -99.99  16.50 
1997 03 99.99 -99.99  17.60 
1997 10 99.99 -99.99  18.00 
1998 07 99.99 -99.99  16.90 
1998 10 99.99 -99.99  17.79 
1998 12 99.99 -99.99  17.29 
1999 03 99.99 -99.99  16.29 
1999 05 99.99 -99.99  16.20 
1999 07 99.99 -99.99  17.29 
1999 09 99.99 -99.99  17.10 
2000 08 99.99 -99.99  20.60 
2000 10 99.99 -99.99  21.40 
2000 11 26.40   5.00  15.70 
2000 12 24.10   8.50  16.29 
2001 01 21.10   9.70  15.40 
2001 02 23.50   9.89  16.70 
