1957 08 29.23  24.70  26.96 
1957 09 30.17  24.76  27.46 
1957 10 31.37  25.07  28.22 
1957 11 31.66  25.49  28.57 
1957 12 30.75  25.38  28.06 
1958 01 99.99  25.90 -99.99 
1958 02 99.99  25.97 -99.99 
1958 03 31.12 -99.99 -99.99 
1958 04 31.89  26.22  29.05 
1958 05 32.08  25.72  28.90 
1958 06 31.58  25.48  28.53 
1958 07 30.19  25.22  27.70 
1958 08 30.07 -99.99 -99.99 
1958 09 30.65  24.96  27.80 
1958 10 31.35 -99.99 -99.99 
1958 11 31.52  25.76  28.64 
1958 12 31.10  25.68  28.39 
1961 01 30.80  25.30  28.05 
1961 02 31.30  25.20  28.25 
1961 03 31.50  26.00  28.75 
1961 04 31.20  25.60  28.40 
1961 05 30.90  26.00  28.45 
1961 06 29.30  25.10  27.20 
1961 07 29.10  24.50  26.80 
1961 08 28.20  24.70  26.45 
1961 09 28.60  24.10  26.35 
1961 10 30.00  25.40  27.70 
1961 11 31.10  25.30  28.20 
1961 12 30.00  25.60  27.80 
1962 01 30.50  25.50  28.00 
1962 02 30.30  25.20  27.75 
1962 03 29.40  25.30  27.34 
1962 04 30.20  25.20  27.70 
1962 05 30.50  25.70  28.10 
1962 06 30.60  24.90  27.75 
1962 07 29.20  24.50  26.85 
1962 08 29.20  24.60  26.90 
1962 09 28.50  24.40  26.45 
1962 10 31.10  24.00  27.55 
1962 11 31.40  25.50  28.45 
1962 12 30.70  25.40  28.05 
1963 01 29.90  24.70  27.30 
1963 02 30.80  24.60  27.70 
1963 03 30.80  25.40  28.09 
1963 04 31.20  25.70  28.45 
1963 05 30.30  25.10  27.70 
1963 06 29.70  25.00  27.35 
1963 07 28.40  24.90  26.65 
1963 08 28.20  24.80  26.50 
1963 09 29.10  25.20  27.15 
1963 10 30.20  25.20  27.70 
1963 11 31.70  25.40  28.55 
1963 12 31.00  25.10  28.05 
1964 01 31.70  25.80  28.75 
1964 02 30.70  25.20  27.95 
1964 03 31.00  25.80  28.40 
1964 04 31.70  25.20  28.45 
1964 05 31.20  25.70  28.45 
1964 06 30.30  25.30  27.80 
1964 07 29.90  24.80  27.34 
1964 08 29.50  24.80  27.15 
1964 09 30.20  24.40  27.30 
1964 10 30.80  24.60  27.70 
1964 11 31.50  25.30  28.40 
1964 12 30.90  24.70  27.80 
1965 01 30.20  25.00  27.60 
1965 02 31.40  25.80  28.59 
1965 03 31.30  25.50  28.40 
1965 04 30.60  25.00  27.80 
1965 05 31.50  25.10  28.30 
1965 06 29.80  25.00  27.40 
1965 07 27.70  24.30  26.00 
1965 08 27.90  24.40  26.15 
1965 09 29.30  25.10  27.20 
1965 10 30.70  24.50  27.60 
1965 11 31.00  25.40  28.20 
1965 12 31.00  25.40  28.20 
1966 01 30.50  24.00  27.25 
1966 02 30.30  24.10  27.20 
1966 03 31.00  24.00  27.50 
1966 04 31.00  24.80  27.90 
1966 05 30.30  24.40  27.34 
1966 06 29.10  23.40  26.25 
1966 07 28.40  24.00  26.20 
1966 08 28.90  24.00  26.45 
1966 09 29.80  24.90  27.34 
1966 10 30.00  24.80  27.40 
1966 11 30.70  24.90  27.80 
1966 12 30.30  24.80  27.55 
1967 01 30.30  24.80  27.55 
1967 02 29.40  24.20  26.80 
1967 03 30.00  24.60  27.30 
1967 04 30.40  24.80  27.59 
1967 05 30.10  24.90  27.50 
1967 06 29.40  24.90  27.15 
1967 07 28.30  24.60  26.45 
1967 08 28.50  24.60  26.55 
1967 09 28.50  24.80  26.65 
1967 10 30.00  24.90  27.45 
1967 11 30.90  25.40  28.15 
1967 12 30.50  25.20  27.85 
1968 01 30.60  25.80  28.20 
1968 02 30.60  25.30  27.95 
1968 03 30.40  25.00  27.70 
1968 04 30.30  25.10  27.70 
1968 05 30.60  25.40  28.00 
1968 06 30.30  24.70  27.50 
1968 07 29.40  24.70  27.05 
1968 08 29.70  24.70  27.20 
1968 09 30.00  24.60  27.30 
1968 10 29.80  24.70  27.25 
1968 11 30.20  24.60  27.40 
1968 12 30.50  25.00  27.75 
1969 01 29.20  24.10  26.65 
1969 02 30.80  25.60  28.20 
1969 03 30.60  25.00  27.80 
1969 04 30.60  25.40  28.00 
1969 05 30.50  25.10  27.80 
1969 06 30.10  24.90  27.50 
1969 07 28.60  24.30  26.45 
1969 08 29.40  23.80  26.59 
1969 09 29.40  24.50  26.95 
1969 10 30.00  24.60  27.30 
1969 11 30.10  24.80  27.45 
1969 12 30.30  24.50  27.40 
1970 01 30.40  25.10  27.75 
1970 02 30.30  25.00  27.65 
1970 03 30.60  25.40  28.00 
1970 04 30.30  25.20  27.75 
1970 05 30.50  25.10  27.80 
1970 06 29.80  24.60  27.20 
1970 07 29.50  23.70  26.60 
1970 08 29.50 -99.99 -99.99 
1971 01 29.80  24.80  27.30 
1971 02 30.10  24.80  27.45 
1971 03 31.00  25.00  28.00 
1971 04 31.50  25.00  28.25 
1971 05 30.90  24.60  27.75 
1971 06 30.20  24.20  27.20 
1971 07 30.90  23.80  27.34 
1971 08 31.20  24.00  27.60 
1971 09 30.70  24.60  27.65 
1971 10 31.50  24.70  28.10 
1971 11 30.90  24.80  27.84 
1971 12 31.30  24.80  28.05 
1972 01 30.80  24.60  27.70 
1972 02 30.70  24.70  27.70 
1972 03 32.40  24.90  28.65 
1972 04 31.60  24.40  28.00 
1972 05 31.40  24.90  28.15 
1972 06 31.20  24.30  27.75 
1972 07 31.40  24.70  28.05 
1972 08 30.50  23.20  26.85 
1972 09 31.60  24.50  28.05 
1972 10 32.20  24.60  28.40 
1972 11 31.60  24.70  28.15 
1972 12 31.60  25.40  28.50 
1973 01 30.60  24.60  27.60 
1973 02 30.90  25.40  28.15 
1973 03 30.40  25.40  27.90 
1973 04 32.50  25.00  28.75 
1973 05 31.20  24.70  27.95 
1973 06 31.80  25.00  28.40 
1973 07 30.50  24.60  27.55 
1973 08 31.10  24.20  27.65 
1973 09 31.20  24.30  27.75 
1973 10 31.00  24.80  27.90 
1973 11 31.20  25.00  28.10 
1973 12 31.20  24.80  28.00 
1974 01 31.00  25.00  28.00 
1974 02 30.40  24.30  27.34 
1974 03 31.00  25.20  28.10 
1974 04 30.30  24.50  27.40 
1974 05 31.40  24.60  28.00 
1974 06 32.50  24.60  28.55 
1974 07 31.80  24.30  28.05 
1974 08 31.50  24.20  27.85 
1974 09 31.30  23.90  27.59 
1974 12 31.00  24.20  27.60 
1975 01 31.30  24.90  28.09 
1975 02 30.80  24.40  27.59 
1975 03 30.90  25.20  28.05 
1975 04 31.10  24.90  28.00 
1975 05 31.10  24.60  27.85 
1975 06 30.60  24.60  27.60 
1975 07 30.30  24.10  27.20 
1975 08 30.70  24.10  27.40 
1975 09 31.10  24.40  27.75 
1975 10 30.50  24.70  27.60 
1975 11 31.00  24.60  27.80 
1975 12 31.20  24.50  27.85 
1996 11 31.78 -99.99 -99.99 
1997 08 99.99  24.17 -99.99 
1997 10 99.99  24.79 -99.99 
1997 11 99.99  24.33 -99.99 
1998 02 30.37 -99.99 -99.99 
1998 04 30.79 -99.99 -99.99 
1998 05 31.00 -99.99 -99.99 
1998 06 30.62  25.24  27.93 
1998 08 30.64 -99.99 -99.99 
1998 09 30.90 -99.99 -99.99 
1998 10 31.00 -99.99 -99.99 
1999 04 30.55 -99.99 -99.99 
1999 05 99.99 -99.99  27.20 
1999 10 99.99 -99.99  27.20 
2000 02 99.99 -99.99  27.40 
2000 07 99.99 -99.99  27.00 
2000 09 99.99 -99.99  27.40 
2000 10 99.99 -99.99  27.30 
2001 02 99.99 -99.99  27.60 
2001 03 99.99 -99.99  27.40 
2002 05 99.99 -99.99  28.10 
2003 12 99.99 -99.99  27.80 
2004 04 99.99 -99.99  28.10 
2004 06 99.99 -99.99  27.30 
2004 09 99.99 -99.99  26.80 
2004 10 99.99 -99.99  28.00 
2004 11 99.99 -99.99  28.00 
2004 12 99.99 -99.99  27.10 
2005 02 99.99 -99.99  28.10 
2005 05 99.99 -99.99  27.80 
2006 08 99.99 -99.99  25.30 
2006 09 99.99 -99.99  26.30 
2006 10 99.99 -99.99  27.20 
2006 11 99.99 -99.99  28.90 
2006 12 99.99 -99.99  28.30 
2007 02 99.99 -99.99  28.30 
2007 03 99.99 -99.99  27.20 
2007 04 99.99 -99.99  26.50 
2007 05 99.99 -99.99  27.10 
2007 06 99.99 -99.99  26.90 
2007 07 30.05 -99.99  25.80 
2007 08 30.26 -99.99  25.70 
2007 09 31.27 -99.99 -99.99 
2007 10 32.33 -99.99  26.90 
2007 11 99.99 -99.99  27.00 
2007 12 32.62 -99.99  27.10 
2008 01 31.49 -99.99  26.90 
2008 02 31.14 -99.99  26.80 
2008 04 30.68 -99.99  26.30 
2008 05 30.75 -99.99  26.40 
2008 06 30.14 -99.99  25.90 
2008 07 29.88 -99.99  25.60 
2008 08 30.07 -99.99  25.50 
2008 09 30.53 -99.99  26.30 
2008 10 30.58 -99.99  26.50 
2008 11 99.99 -99.99  26.70 
2008 12 31.28 -99.99  26.80 
2009 01 99.99 -99.99  27.10 
2009 02 31.25 -99.99  27.00 
2009 03 31.16 -99.99 -99.99 
2009 04 31.49 -99.99  26.90 
2009 05 31.68 -99.99 -99.99 
2009 06 30.77 -99.99 -99.99 
2009 07 30.14 -99.99  25.80 
2009 08 30.55 -99.99  26.20 
2009 09 31.14 -99.99  26.00 
2009 10 99.99 -99.99  27.60 
2009 11 31.99 -99.99  27.10 
2009 12 31.33 -99.99  27.20 
2010 01 31.46 -99.99  27.30 
2010 02 99.99 -99.99  27.90 
2010 03 32.18 -99.99  27.90 
2010 04 32.04 -99.99  27.80 
2010 05 31.70 -99.99  27.80 
2010 06 31.01 -99.99  26.70 
2010 07 30.69 -99.99  26.60 
2010 08 30.74 -99.99 -99.99 
2010 09 99.99 -99.99  26.60 
2010 10 31.72 -99.99 -99.99 
2010 11 31.64 -99.99  27.00 
2010 12 31.46 -99.99  26.90 
2011 01 31.27 -99.99  27.10 
2011 02 30.97 -99.99  26.80 
2011 03 31.11 -99.99  26.80 
2011 04 31.32 -99.99  27.10 
2011 05 30.90 -99.99 -99.99 
2011 06 29.62 -99.99  25.90 
2011 07 30.54 -99.99  26.10 
2011 08 29.95 -99.99  25.80 
2011 09 30.22 -99.99  26.10 
2011 11 32.04 -99.99  27.40 
2011 12 99.99 -99.99  27.20 
2012 01 31.20 -99.99 -99.99 
2012 02 31.36 -99.99 -99.99 
2012 03 30.89 -99.99 -99.99 
2012 04 31.42 -99.99 -99.99 
2012 05 31.80 -99.99 -99.99 
2012 06 30.37 -99.99 -99.99 
2012 07 30.52 -99.99 -99.99 
2012 08 30.43 -99.99 -99.99 
2012 09 31.40 -99.99 -99.99 
2012 10 32.09 -99.99 -99.99 
2012 11 31.63 -99.99 -99.99 
2012 12 31.74 -99.99 -99.99 
2013 01 31.77 -99.99 -99.99 
2013 02 31.41 -99.99 -99.99 
2013 03 31.99 -99.99 -99.99 
2013 04 31.25 -99.99 -99.99 
2013 05 31.56 -99.99 -99.99 
2013 06 31.61 -99.99 -99.99 
2013 07 29.91 -99.99 -99.99 
