1981 01 99.99 -99.99  26.40 
1981 02 99.99 -99.99  26.80 
1981 03 99.99 -99.99  27.30 
1981 04 99.99 -99.99  26.30 
1981 05 99.99 -99.99  28.20 
1981 06 99.99 -99.99  27.40 
1981 07 99.99 -99.99  27.70 
1981 08 99.99 -99.99  28.20 
1981 09 99.99 -99.99  28.80 
1981 10 99.99 -99.99  28.70 
1981 11 99.99 -99.99  28.80 
1981 12 99.99 -99.99  27.20 
1982 01 99.99 -99.99  26.00 
1982 02 99.99 -99.99  25.60 
1982 03 99.99 -99.99  26.10 
1982 04 99.99 -99.99  27.00 
1982 05 99.99 -99.99  27.60 
1982 06 99.99 -99.99  26.80 
1982 07 99.99 -99.99  27.10 
1982 08 99.99 -99.99  27.70 
1982 09 99.99 -99.99  28.20 
1982 10 99.99 -99.99  28.00 
1982 11 99.99 -99.99  27.50 
1982 12 99.99 -99.99  26.20 
1983 01 99.99 -99.99  26.00 
1983 02 99.99 -99.99  26.60 
1983 03 99.99 -99.99  27.50 
1983 04 32.90 -99.99  28.10 
1983 05 31.80 -99.99  27.80 
1983 06 32.09 -99.99  27.90 
1983 07 32.09 -99.99  28.00 
1983 08 32.59 -99.99  28.00 
1983 09 33.30 -99.99  28.80 
1983 10 32.70 -99.99  28.20 
1983 11 32.20 -99.99  27.80 
1983 12 30.80 -99.99  26.70 
1984 01 99.99 -99.99  26.10 
1984 02 30.90 -99.99  26.30 
1984 03 31.60 -99.99  26.60 
1984 04 32.50 -99.99  27.30 
1984 05 99.99 -99.99  27.40 
1984 06 99.99 -99.99  27.70 
1984 07 99.99 -99.99  27.50 
1984 08 32.09 -99.99  27.90 
1984 09 33.59 -99.99  28.50 
1984 10 32.59 -99.99  28.40 
1984 11 99.99 -99.99  27.40 
1984 12 99.99 -99.99  26.20 
1985 01 99.99 -99.99  25.80 
1985 02 99.99 -99.99  25.60 
1985 03 99.99 -99.99  26.80 
1985 04 99.99 -99.99  27.50 
1985 05 99.99 -99.99  28.50 
1985 06 99.99 -99.99  27.80 
1985 07 99.99 -99.99  27.90 
1985 08 99.99 -99.99  28.30 
1985 09 33.09 -99.99  27.20 
1985 10 99.99 -99.99  27.70 
1985 11 99.99 -99.99  27.00 
1985 12 99.99 -99.99  25.70 
1986 01 29.80 -99.99  25.60 
1986 02 99.99 -99.99  25.80 
1986 03 30.90 -99.99  26.20 
1986 04 32.09 -99.99  27.50 
1986 05 31.70 -99.99  27.40 
1986 06 99.99 -99.99  27.40 
1986 07 99.99 -99.99  27.50 
1986 08 32.20 -99.99  27.80 
1986 09 32.40 -99.99  27.90 
1986 10 99.99 -99.99  27.60 
1986 11 99.99 -99.99  27.50 
1986 12 31.00 -99.99  27.00 
1987 01 30.80 -99.99  27.20 
1987 02 99.99 -99.99  26.90 
1987 03 99.99 -99.99  27.80 
1987 04 99.99 -99.99  29.30 
1987 05 99.99 -99.99  29.00 
1987 06 99.99 -99.99  28.70 
1987 07 99.99 -99.99  28.10 
1987 08 99.99 -99.99  29.30 
1987 09 99.99 -99.99  29.00 
1987 10 99.99 -99.99  29.10 
1987 11 99.99 -99.99  28.50 
1987 12 99.99 -99.99  27.90 
1988 01 99.99 -99.99  26.70 
1988 02 99.99 -99.99  26.40 
1988 03 31.70 -99.99  27.00 
1988 04 32.59 -99.99  27.70 
1988 05 33.30 -99.99  28.30 
1988 06 99.99 -99.99  27.90 
1988 07 99.99 -99.99  27.90 
1988 08 99.99 -99.99  28.10 
1988 09 99.99 -99.99  28.50 
1988 10 99.99 -99.99  28.00 
1988 11 99.99 -99.99  28.00 
1988 12 99.99 -99.99  26.50 
1989 01 99.99 -99.99  26.40 
1989 02 99.99 -99.99  26.40 
1989 03 99.99 -99.99  26.60 
1989 04 99.99 -99.99  27.30 
1989 05 99.99 -99.99  27.70 
1989 06 99.99 -99.99  28.00 
1989 07 99.99 -99.99  28.40 
1989 08 99.99 -99.99  29.60 
1989 09 99.99 -99.99  29.50 
1989 10 99.99 -99.99  29.50 
1989 11 99.99 -99.99  27.90 
1989 12 99.99 -99.99  26.70 
1990 01 99.99 -99.99  26.00 
1990 02 99.99 -99.99  25.70 
1990 03 31.10 -99.99  26.70 
1990 04 99.99 -99.99  28.10 
1990 05 32.50 -99.99  28.20 
1990 06 31.60 -99.99  27.80 
1990 07 32.09 -99.99  28.00 
1990 08 99.99 -99.99  28.00 
1990 09 33.30 -99.99  29.10 
1990 10 99.99 -99.99  29.00 
1990 11 32.80 -99.99  28.60 
1990 12 30.70 -99.99  26.70 
1991 02 31.00 -99.99 -99.99 
1991 04 32.00 -99.99 -99.99 
1991 06 32.30 -99.99 -99.99 
1991 07 31.90 -99.99 -99.99 
1991 08 31.90 -99.99 -99.99 
1991 09 31.90 -99.99 -99.99 
1991 10 31.40 -99.99 -99.99 
1991 11 30.40 -99.99 -99.99 
1991 12 29.00 -99.99 -99.99 
1992 01 29.30 -99.99 -99.99 
1992 03 30.50 -99.99 -99.99 
1992 06 30.80 -99.99 -99.99 
1992 07 30.70 -99.99 -99.99 
1992 08 30.60 -99.99 -99.99 
1992 09 30.70 -99.99 -99.99 
1992 10 31.30 -99.99 -99.99 
1992 11 29.80 -99.99 -99.99 
1992 12 29.80 -99.99 -99.99 
1993 03 30.70 -99.99 -99.99 
1993 04 32.09 -99.99 -99.99 
1993 05 32.59 -99.99 -99.99 
1993 06 31.40 -99.99 -99.99 
1993 07 31.40 -99.99 -99.99 
1993 08 31.50 -99.99 -99.99 
1993 10 31.90 -99.99 -99.99 
1993 11 30.50 -99.99 -99.99 
1994 01 29.70 -99.99 -99.99 
1994 02 29.60 -99.99 -99.99 
1994 03 31.00 -99.99 -99.99 
1994 04 31.60 -99.99 -99.99 
1994 05 32.09 -99.99 -99.99 
1994 06 31.60 -99.99 -99.99 
1994 09 32.50 -99.99 -99.99 
1994 11 31.30 -99.99 -99.99 
1994 12 30.70 -99.99 -99.99 
1995 01 30.60  23.40  27.00 
1995 02 31.30  23.60  27.45 
1995 04 32.59  24.80  28.70 
1995 05 32.80  25.30  29.05 
1995 06 31.60  24.80  28.20 
1995 07 31.60  24.60  28.10 
1995 08 32.00  24.30  28.15 
1995 09 32.59  25.30  28.95 
1995 10 31.80  24.40  28.09 
1995 11 31.00  23.80  27.40 
1995 12 30.60  23.30  26.95 
1996 01 29.50  21.10  25.30 
1996 02 30.40  23.30  26.84 
1996 03 30.60  23.10  26.85 
1996 04 31.50  23.90  27.70 
1996 05 31.80  24.40  28.09 
1996 06 30.80  24.00  27.40 
1996 07 31.20  24.30  27.75 
1996 08 32.30  25.00  28.65 
1996 09 33.20  25.50  29.35 
1996 10 32.80  25.40  29.09 
1996 11 31.50  24.40  27.95 
1996 12 30.70  23.50  27.10 
1997 01 29.40  22.40  25.90 
1997 03 29.50  22.20  25.85 
1997 04 31.60  23.90  27.75 
1997 05 32.50  24.80  28.65 
1997 06 31.90  24.60  28.25 
1997 07 32.09  25.00  28.55 
1997 08 33.20  25.40  29.30 
1997 09 33.20  26.00  29.60 
1997 10 33.70  25.80  29.75 
1997 11 32.70  25.50  29.10 
1997 12 31.50  24.00  27.75 
1998 01 32.00  24.10  28.05 
1998 02 32.00  24.60  28.30 
1998 03 32.20  24.50  28.35 
1998 04 33.30  25.30  29.30 
1998 05 33.20  25.70  29.45 
1998 06 32.09  24.90  28.50 
1998 07 31.70  24.50  28.10 
1998 08 33.80  25.50  29.65 
1998 09 33.50  25.90  29.70 
1998 10 32.70  25.30  29.00 
1998 11 32.40  24.90  28.65 
1998 12 31.50  24.10  27.80 
1999 01 30.60  23.60  27.10 
1999 02 30.00  23.00  26.50 
1999 03 31.70  23.80  27.75 
1999 04 30.20  22.20  26.20 
1999 05 33.30  25.00  29.15 
1999 06 32.70  25.30  29.00 
1999 07 33.20  25.40  29.30 
1999 08 33.20  25.10  29.15 
1999 09 33.20  25.40  29.30 
1999 10 32.70  24.60  28.65 
1999 11 32.30  24.80  28.55 
1999 12 30.20  23.50  26.85 
2000 01 29.70  22.70  26.20 
2000 02 30.50  23.30  26.90 
2000 03 30.20  22.70  26.45 
2000 04 30.10  23.20  26.65 
2000 05 31.80  24.60  28.20 
2000 06 31.30  24.70  28.00 
2000 07 31.70  24.90  28.30 
2000 08 32.30  25.10  28.70 
2000 09 32.90  25.30  29.10 
2000 10 32.59  24.80  28.70 
2000 11 31.70  24.30  28.00 
2000 12 30.60  23.60  27.10 
2001 01 30.50  23.00  26.75 
2001 02 30.00  22.60  26.30 
2001 03 31.50  23.30  27.40 
2001 04 31.80  23.40  27.59 
2001 05 33.20  25.00  29.10 
2001 08 33.30  25.60  29.45 
2001 09 33.70  25.50  29.60 
2001 12 31.50  24.70  28.10 
2002 01 30.30  23.60  26.95 
2002 02 31.20  23.30  27.25 
2002 03 31.80  24.20  28.00 
2002 04 32.09  24.50  28.30 
2002 05 31.60  24.30  27.95 
2002 06 32.00  24.70  28.35 
2002 07 31.40  24.40  27.90 
2002 08 34.09  25.20  29.65 
2002 09 34.40  26.40  30.40 
2002 10 33.59  25.80  29.70 
2002 11 32.09  24.80  28.45 
2002 12 31.30  23.90  27.59 
2003 01 31.50  23.50  27.50 
2003 02 31.80  23.60  27.70 
2003 03 31.80  23.60  27.70 
2003 04 33.59  25.20  29.40 
2003 05 33.00  25.50  29.25 
2003 07 32.00  25.00  28.50 
2003 08 33.80  25.60  29.70 
2003 09 34.09  26.10  30.09 
2003 10 33.90  26.00  29.95 
2003 11 32.40  25.20  28.80 
2003 12 31.10  24.60  27.85 
2004 01 28.20  21.40  24.80 
2004 02 30.40  23.40  26.90 
2004 04 32.59  24.80  28.70 
2004 05 32.20  25.00  28.60 
