1978 03 30.88  26.27  28.57 
1980 04 99.99 -99.99  29.80 
1980 05 99.99 -99.99  27.30 
1980 06 99.99 -99.99  26.30 
1980 07 99.99 -99.99  24.70 
1980 08 99.99 -99.99  24.50 
1980 09 99.99 -99.99  25.00 
1980 10 99.99 -99.99  25.40 
1980 11 99.99 -99.99  25.70 
1980 12 99.99 -99.99  25.10 
1981 01 99.99 -99.99  25.90 
1981 02 99.99 -99.99  29.30 
1981 03 99.99 -99.99  30.00 
1981 04 99.99 -99.99  29.30 
1981 05 99.99 -99.99  27.30 
1981 06 99.99 -99.99  26.30 
1981 07 99.99 -99.99  24.50 
1981 08 99.99 -99.99  24.20 
1981 09 99.99 -99.99  25.00 
1981 10 99.99 -99.99  26.00 
1981 11 99.99 -99.99  25.80 
1981 12 99.99 -99.99  26.50 
1982 01 99.99 -99.99  26.40 
1982 02 99.99 -99.99  28.10 
1982 03 99.99 -99.99  29.30 
1982 04 99.99 -99.99  28.50 
1982 05 99.99 -99.99  27.10 
1982 06 99.99 -99.99  25.80 
1982 07 99.99 -99.99  24.80 
1982 08 99.99 -99.99  24.30 
1982 09 99.99 -99.99  25.20 
1982 10 99.99 -99.99  25.10 
1982 11 99.99 -99.99  25.40 
1982 12 99.99 -99.99  25.80 
1983 01 99.99 -99.99  24.20 
1983 02 99.99 -99.99  29.30 
1983 03 99.99 -99.99  30.50 
1983 04 99.99 -99.99  30.00 
1983 05 99.99 -99.99  28.00 
1983 06 99.99 -99.99  25.90 
1983 07 99.99 -99.99  25.00 
1983 08 99.99 -99.99  24.60 
1983 09 99.99 -99.99  25.10 
1983 10 99.99 -99.99  26.60 
1983 11 99.99 -99.99  26.90 
1983 12 99.99 -99.99  27.10 
1984 01 99.99 -99.99  26.50 
1984 02 99.99 -99.99  28.50 
1984 03 99.99 -99.99  29.50 
1984 04 99.99 -99.99  28.50 
1984 05 99.99 -99.99  27.60 
1984 06 99.99 -99.99  26.30 
1984 07 99.99 -99.99  24.90 
1984 08 99.99 -99.99  25.20 
1984 09 99.99 -99.99  24.60 
1984 10 99.99 -99.99  25.70 
1984 11 99.99 -99.99  26.40 
1984 12 99.99 -99.99  25.30 
1985 01 99.99 -99.99  27.50 
1985 02 99.99 -99.99  28.00 
1985 03 99.99 -99.99  30.10 
1985 04 99.99 -99.99  28.80 
1985 05 99.99 -99.99  27.50 
1985 06 99.99 -99.99  26.30 
1985 07 99.99 -99.99  24.30 
1985 08 99.99 -99.99  24.20 
1985 09 99.99 -99.99  24.30 
1985 10 99.99 -99.99  26.30 
1985 11 99.99 -99.99  26.80 
1985 12 99.99 -99.99  25.20 
1986 01 99.99 -99.99  26.40 
1986 02 99.99 -99.99  29.70 
1986 03 99.99 -99.99  28.80 
1986 04 99.99 -99.99  29.50 
1986 05 99.99 -99.99  27.90 
1986 06 99.99 -99.99  26.20 
1986 07 99.99 -99.99  24.30 
1986 08 99.99 -99.99  24.50 
1986 09 99.99 -99.99  24.20 
1986 10 99.99 -99.99  25.70 
1986 11 99.99 -99.99  25.10 
1986 12 99.99 -99.99  24.80 
1987 01 99.99 -99.99  27.30 
1987 02 99.99 -99.99  29.60 
1987 03 99.99 -99.99  29.60 
1987 04 99.99 -99.99  30.80 
1987 05 99.99 -99.99  29.00 
1987 06 99.99 -99.99  26.30 
1987 07 99.99 -99.99  25.80 
1987 08 99.99 -99.99  25.20 
1987 09 99.99 -99.99  25.30 
1987 10 99.99 -99.99  25.70 
1987 11 99.99 -99.99  26.10 
1987 12 99.99 -99.99  26.20 
1988 01 99.99 -99.99  26.60 
1988 02 99.99 -99.99  29.30 
1988 03 99.99 -99.99  30.80 
1988 04 99.99 -99.99  28.60 
1988 05 99.99 -99.99  28.50 
1988 06 99.99 -99.99  25.90 
1988 07 99.99 -99.99  24.60 
1988 08 99.99 -99.99  24.30 
1988 09 99.99 -99.99  24.70 
1988 10 99.99 -99.99  26.40 
1988 11 99.99 -99.99  26.70 
1988 12 99.99 -99.99  25.60 
1989 01 99.99 -99.99  25.00 
1989 02 99.99 -99.99  27.40 
1989 03 99.99 -99.99  28.90 
1989 04 99.99 -99.99  29.60 
1989 05 99.99 -99.99  28.60 
1989 07 99.99 -99.99  24.80 
1989 08 99.99 -99.99  24.60 
1989 09 99.99 -99.99  25.00 
1989 10 99.99 -99.99  25.60 
1989 11 99.99 -99.99  26.90 
1989 12 99.99 -99.99  26.30 
1990 01 99.99 -99.99  27.40 
1990 02 99.99 -99.99  28.00 
1990 03 99.99 -99.99  30.00 
1990 04 99.99 -99.99  29.20 
1990 05 99.99 -99.99  28.00 
1990 06 99.99 -99.99  26.10 
1990 07 99.99 -99.99  24.40 
1990 08 99.99 -99.99  24.70 
1990 09 99.99 -99.99  25.20 
1990 10 99.99 -99.99  26.10 
1990 11 99.99 -99.99  26.70 
1990 12 99.99 -99.99  26.20 
1991 08 99.99 -99.99  24.40 
1992 05 99.99 -99.99  27.50 
1992 08 99.99 -99.99  24.30 
1992 09 99.99 -99.99  24.80 
1993 02 99.99 -99.99  28.80 
1993 05 99.99 -99.99  27.90 
1993 06 99.99 -99.99  26.10 
1993 07 99.99 -99.99  24.80 
1993 08 99.99 -99.99  24.80 
1993 09 99.99 -99.99  25.00 
1993 10 99.99 -99.99  20.70 
1993 11 99.99 -99.99  26.90 
1993 12 99.99 -99.99  25.90 
1994 01 99.99 -99.99  26.50 
1994 03 99.99 -99.99  30.40 
1994 04 99.99 -99.99  29.40 
1994 05 99.99 -99.99  22.70 
1994 06 99.99 -99.99  25.90 
1994 07 99.99 -99.99  24.80 
1994 08 99.99 -99.99  24.70 
1994 09 99.99 -99.99  25.00 
1994 10 99.99 -99.99  25.50 
1994 11 99.99 -99.99  26.10 
1994 12 99.99 -99.99  25.70 
1995 01 99.99 -99.99  25.90 
1995 02 99.99 -99.99  28.20 
1995 03 99.99 -99.99  30.30 
1995 04 99.99 -99.99  29.60 
1995 05 99.99 -99.99  27.70 
1995 06 99.99 -99.99  26.70 
1995 07 99.99 -99.99  25.30 
1995 08 99.99 -99.99  24.70 
1995 09 99.99 -99.99  21.80 
1995 10 99.99 -99.99  25.90 
1995 11 99.99 -99.99  25.40 
1995 12 99.99 -99.99  26.80 
1996 01 99.99 -99.99  27.30 
1996 02 99.99 -99.99  29.50 
1996 03 99.99 -99.99  30.70 
1996 04 99.99 -99.99  28.80 
1996 05 99.99 -99.99  28.10 
1996 06 99.99 -99.99  26.20 
1996 07 99.99 -99.99  25.30 
1996 08 99.99 -99.99  24.90 
1996 09 99.99 -99.99  25.10 
1996 10 99.99 -99.99  25.80 
1996 11 99.99 -99.99  25.90 
1996 12 99.99 -99.99  26.70 
1997 01 99.99 -99.99  27.60 
1997 02 99.99 -99.99  27.90 
1997 03 99.99 -99.99  29.80 
1997 04 99.99 -99.99  28.50 
1997 05 99.99 -99.99  27.00 
1997 06 99.99 -99.99  25.70 
1997 07 99.99 -99.99  25.00 
1997 08 99.99 -99.99  25.20 
1997 09 99.99 -99.99  25.80 
1997 10 99.99 -99.99  26.20 
1997 11 99.99 -99.99  26.20 
1997 12 99.99 -99.99  26.10 
1998 01 99.99 -99.99  26.80 
1998 02 99.99 -99.99  29.90 
1998 03 99.99 -99.99  30.90 
1998 04 99.99 -99.99  30.60 
1998 05 99.99 -99.99  28.60 
1998 06 99.99 -99.99  26.60 
1998 07 99.99 -99.99  25.50 
1998 08 99.99 -99.99  25.00 
1998 09 99.99 -99.99  25.20 
1998 10 99.99 -99.99  26.10 
1998 11 99.99 -99.99  27.00 
1998 12 99.99 -99.99  26.90 
1999 01 99.99 -99.99  27.50 
1999 02 99.99 -99.99  28.00 
1999 03 99.99 -99.99  30.50 
1999 04 99.99 -99.99  28.70 
1999 06 99.99 -99.99  27.30 
1999 08 99.99 -99.99  24.60 
1999 09 99.99 -99.99  24.60 
1999 11 99.99 -99.99  26.70 
2000 02 99.99 -99.99  27.40 
2002 02 34.33  22.17  28.25 
2002 03 34.93  25.34  30.13 
2003 01 33.15  20.51  26.83 
2003 08 26.84  21.81  24.32 
2004 01 31.68  20.76  26.22 
2004 10 30.40  21.78  26.09 
2011 10 30.95  21.96  26.45 
