1981 01 99.99 -99.99  25.40 
1981 02 99.99 -99.99  26.40 
1981 03 99.99 -99.99  27.20 
1981 04 99.99 -99.99  25.70 
1981 05 99.99 -99.99  25.20 
1981 06 99.99 -99.99  24.70 
1981 07 99.99 -99.99  23.80 
1981 08 99.99 -99.99  24.20 
1981 09 99.99 -99.99  24.20 
1981 10 99.99 -99.99  24.90 
1981 11 99.99 -99.99  26.00 
1981 12 99.99 -99.99  25.00 
1982 01 99.99 -99.99  24.00 
1982 02 99.99 -99.99  26.00 
1982 03 99.99 -99.99  26.50 
1982 04 99.99 -99.99  24.10 
1982 05 99.99 -99.99  24.40 
1982 06 99.99 -99.99  24.30 
1982 07 99.99 -99.99  23.90 
1982 08 99.99 -99.99  24.20 
1982 09 99.99 -99.99  24.40 
1982 10 99.99 -99.99  24.70 
1982 11 99.99 -99.99  25.00 
1982 12 99.99 -99.99  25.00 
1983 01 99.99 -99.99  25.10 
1983 02 99.99 -99.99  26.10 
1983 03 99.99 -99.99  27.60 
1983 04 99.99 -99.99  25.70 
1983 05 99.99 -99.99  24.50 
1983 06 99.99 -99.99  24.20 
1983 07 99.99 -99.99  24.70 
1983 08 99.99 -99.99  25.20 
1983 09 99.99 -99.99  25.60 
1983 10 99.99 -99.99  25.40 
1983 11 99.99 -99.99  25.70 
1983 12 99.99 -99.99  25.50 
1984 01 99.99 -99.99  26.00 
1984 02 99.99 -99.99  26.50 
1984 03 99.99 -99.99  27.80 
1984 04 99.99 -99.99  27.80 
1984 05 99.99 -99.99  27.20 
1984 06 99.99 -99.99  25.50 
1984 07 99.99 -99.99  24.50 
1984 08 99.99 -99.99  24.80 
1984 09 99.99 -99.99  25.10 
1984 10 99.99 -99.99  25.50 
1984 11 99.99 -99.99  24.40 
1984 12 99.99 -99.99  24.60 
1985 01 99.99 -99.99  25.20 
1985 02 99.99 -99.99  25.70 
1985 03 99.99 -99.99  26.40 
1985 04 99.99 -99.99  26.40 
1985 05 99.99 -99.99  25.40 
1985 06 99.99 -99.99  25.00 
1985 07 99.99 -99.99  25.30 
1985 08 99.99 -99.99  25.20 
1985 09 99.99 -99.99  26.00 
1985 10 99.99 -99.99  26.60 
1985 11 99.99 -99.99  26.50 
1985 12 99.99 -99.99  26.20 
1986 01 99.99 -99.99  26.80 
1986 02 99.99 -99.99  27.30 
1986 03 99.99 -99.99  28.20 
1986 04 99.99 -99.99  28.40 
1986 05 99.99 -99.99  26.90 
1986 06 99.99 -99.99  25.90 
1986 07 99.99 -99.99  25.60 
1986 08 99.99 -99.99  26.60 
1986 09 99.99 -99.99  26.40 
1986 10 99.99 -99.99  26.60 
1986 11 99.99 -99.99  26.60 
1986 12 99.99 -99.99  27.30 
1987 01 99.99 -99.99  26.20 
1987 02 99.99 -99.99  27.10 
1987 03 99.99 -99.99  28.00 
1987 04 99.99 -99.99  28.50 
1987 05 99.99 -99.99  26.20 
1987 06 99.99 -99.99  25.60 
1987 07 99.99 -99.99  25.40 
1987 08 99.99 -99.99  25.50 
1987 09 99.99 -99.99  26.00 
1987 10 99.99 -99.99  26.40 
1987 11 99.99 -99.99  27.00 
1987 12 99.99 -99.99  26.80 
1988 01 99.99 -99.99  26.80 
1988 02 99.99 -99.99  27.50 
1988 03 99.99 -99.99  28.20 
1988 04 99.99 -99.99  28.60 
1988 05 99.99 -99.99  28.10 
1988 06 99.99 -99.99  25.80 
1988 07 99.99 -99.99  25.80 
1988 08 99.99 -99.99  25.30 
1988 09 99.99 -99.99  25.30 
1988 10 99.99 -99.99  25.70 
1988 11 99.99 -99.99  25.30 
1988 12 99.99 -99.99  25.50 
1989 01 99.99 -99.99  25.50 
1989 02 99.99 -99.99  26.00 
1989 03 99.99 -99.99  26.60 
1989 04 99.99 -99.99  27.60 
1989 05 99.99 -99.99  25.90 
1989 06 99.99 -99.99  25.40 
1989 07 99.99 -99.99  24.60 
1989 08 99.99 -99.99  24.80 
1989 09 99.99 -99.99  25.50 
1989 10 99.99 -99.99  25.30 
1989 11 99.99 -99.99  26.80 
1989 12 99.99 -99.99  26.10 
1990 01 99.99 -99.99  27.40 
1990 02 99.99 -99.99  28.10 
1990 03 99.99 -99.99  29.50 
1990 04 99.99 -99.99  28.70 
1990 05 99.99 -99.99  27.30 
1990 06 99.99 -99.99  26.50 
1990 07 99.99 -99.99  26.40 
1990 08 99.99 -99.99  26.50 
1990 09 99.99 -99.99  25.50 
1990 10 99.99 -99.99  25.60 
1990 11 99.99 -99.99  25.50 
1990 12 99.99 -99.99  25.70 
1995 01 33.40  22.40  27.90 
1995 02 34.20  23.10  28.65 
1995 04 32.09  23.90  28.00 
1995 05 31.40  23.00  27.20 
1995 06 30.00  21.90  25.95 
1995 07 30.30  21.80  26.05 
1995 08 31.20  22.10  26.65 
1995 09 32.40  22.30  27.35 
1995 10 32.30  22.60  27.45 
1995 11 32.80  21.80  27.30 
1995 12 32.59  22.10  27.34 
1996 01 33.09  21.70  27.40 
1996 02 33.80  23.00  28.40 
1996 03 34.70  23.50  29.10 
1996 04 34.59 -99.99 -99.99 
1996 05 31.30  22.90  27.09 
1996 06 29.90  22.10  26.00 
1996 07 29.70  21.50  25.60 
1996 08 31.10  21.70  26.40 
1996 09 31.50  21.70  26.60 
1996 10 32.20  21.90  27.05 
1996 11 32.00  22.00  27.00 
1996 12 32.09  22.10  27.09 
1997 01 33.50  21.70  27.60 
1997 02 32.40  21.70  27.05 
1997 03 33.90  22.90  28.40 
1997 04 33.59  23.70  28.65 
1997 05 30.90  23.00  26.95 
1997 06 32.09  22.70  27.40 
1997 07 29.60  21.90  25.75 
1997 08 31.00  22.20  26.60 
1997 09 32.50  22.80  27.65 
1997 10 33.40  22.70  28.05 
1997 11 33.00  22.90  27.95 
1997 12 33.50  22.00  27.75 
1998 01 35.00  23.20  29.10 
1998 02 35.00  24.30  29.65 
1998 03 36.09  24.90  30.50 
1998 04 33.00  24.80  28.90 
1998 05 31.60  24.20  27.90 
1998 06 30.50  23.70  27.10 
1998 07 31.80  22.70  27.25 
1998 08 32.40  23.10  27.75 
1998 09 32.80  23.70  28.25 
1998 10 33.00  23.50  28.25 
1998 11 31.00  23.20  27.10 
1998 12 33.20  23.30  28.25 
1999 01 33.70  23.20  28.45 
1999 02 33.90  23.90  28.90 
1999 03 33.90  23.60  28.75 
1999 04 30.20  22.20  26.20 
1999 05 30.50  21.80  26.15 
1999 06 29.80  20.90  25.34 
1999 07 28.20  19.40  23.80 
1999 08 29.90  21.30  25.59 
1999 09 31.60  21.90  26.75 
1999 10 31.70  22.10  26.90 
1999 11 32.80  22.60  27.70 
1999 12 32.40  23.10  27.75 
2000 01 32.59  22.80  27.70 
2000 02 33.30  23.20  28.25 
2000 03 33.30  23.50  28.40 
2000 04 34.90  24.00  29.45 
2000 05 32.30  23.30  27.80 
2000 06 31.60  22.20  26.90 
2000 07 31.10  21.50  26.30 
2000 08 31.90  22.10  27.00 
2000 09 31.90  21.90  26.90 
2000 10 33.20  22.10  27.65 
2000 11 34.00  22.90  28.45 
2000 12 32.80  21.90  27.34 
2001 01 34.00  21.70  27.85 
2001 02 35.00  22.60  28.80 
2001 03 36.30  22.90  29.59 
2001 04 34.80  23.90  29.34 
2001 05 33.40  23.20  28.30 
2001 06 31.70  21.80  26.75 
2001 07 32.40  21.80  27.10 
2001 08 31.50  21.90  26.70 
2001 09 32.59  22.20  27.40 
2001 10 33.80  22.30  28.05 
2001 11 33.40  23.30  28.35 
2001 12 33.50  23.20  28.35 
2002 01 34.09  22.40  28.25 
2002 02 35.00  23.00  29.00 
2002 03 35.09  23.30  29.20 
2002 04 33.80  23.80  28.80 
2002 05 32.90  22.80  27.85 
2002 06 30.90  22.20  26.55 
2002 07 32.40  22.10  27.25 
2002 08 30.50  21.20  25.85 
2002 09 32.70  22.00  27.35 
2002 10 33.30  22.10  27.70 
2002 11 33.70  21.90  27.80 
2002 12 33.59  21.50  27.55 
2003 01 34.80  21.80  28.30 
2003 02 29.10  22.30  25.70 
2003 03 36.50  23.20  29.85 
2003 04 34.20  23.70  28.95 
2003 05 32.30  23.10  27.70 
2003 06 31.40  22.40  26.90 
2003 07 31.20  22.00  26.60 
2003 09 32.09  21.80  26.95 
2003 10 33.20  22.00  27.60 
2003 12 33.70  22.30  28.00 
2004 01 35.00  22.90  28.95 
2004 02 35.90  23.40  29.65 
2004 04 39.00  24.10  31.55 
2004 05 31.00  22.60  26.80 
2004 09 32.40  22.20  27.30 
2004 10 33.59  22.30  27.95 
