YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC D-J-F M-A-M J-J-A S-O-N metANN 1948 999.9 999.9 999.9 999.9 999.9 999.9 20.0 20.6 23.8 26.5 26.9 29.2 999.9 999.9 20.4 25.7 999.90 1949 30.9 28.9 30.3 25.8 22.5 19.5 18.7 22.0 22.7 24.0 26.8 31.1 29.7 26.2 20.1 24.5 25.11 1950 30.8 30.5 30.4 27.0 23.8 18.7 17.5 20.7 23.8 24.9 27.8 29.8 30.8 27.1 19.0 25.5 25.58 1951 28.8 30.4 30.8 28.5 22.9 20.6 19.1 19.6 23.1 24.9 30.8 29.5 29.7 27.4 19.8 26.3 25.78 1952 30.6 31.5 30.7 28.2 23.5 19.1 19.8 19.1 23.6 24.6 27.6 28.6 30.5 27.5 19.3 25.3 25.65 1953 30.6 29.6 32.0 29.3 22.9 20.4 19.6 18.9 22.9 25.5 28.7 30.3 29.6 28.1 19.6 25.7 25.75 1954 31.2 31.7 31.2 27.3 25.0 19.6 19.6 21.3 24.1 27.5 28.4 30.8 31.1 27.8 20.2 26.7 26.43 1955 30.2 31.0 30.8 27.9 22.8 19.1 19.2 21.7 25.4 24.3 28.4 29.9 30.7 27.2 20.0 26.0 25.97 1956 30.9 30.3 29.1 27.7 21.3 19.7 17.6 21.4 23.3 24.4 28.0 28.6 30.4 26.0 19.6 25.2 25.30 1957 31.0 30.0 30.1 27.8 24.4 20.7 18.0 20.2 24.0 27.2 30.0 30.5 29.9 27.4 19.6 27.1 26.00 1958 30.5 31.7 29.7 29.6 26.4 22.0 18.4 20.6 22.9 24.7 29.3 29.9 30.9 28.6 20.3 25.6 26.36 1959 30.9 30.7 30.9 29.4 23.2 21.0 20.5 22.2 24.7 26.6 29.3 29.2 30.5 27.8 21.2 26.9 26.61 1960 29.9 29.8 30.1 28.4 21.9 20.6 20.1 20.9 22.7 27.2 28.6 29.7 29.6 26.8 20.5 26.2 25.78 1961 31.0 29.8 30.3 28.5 23.7 20.3 17.7 19.6 23.8 28.9 29.6 31.6 30.2 27.5 19.2 27.4 26.08 1962 30.8 30.6 31.0 28.0 23.0 22.8 19.2 20.5 23.7 25.2 28.9 32.0 31.0 27.3 20.8 25.9 26.28 1963 30.3 29.4 30.9 27.6 23.3 19.6 19.6 20.1 24.1 27.4 28.9 29.8 30.6 27.3 19.8 26.8 26.10 1964 31.4 31.3 31.1 28.4 23.8 21.6 19.9 21.4 24.4 24.6 28.1 30.0 30.8 27.8 21.0 25.7 26.32 1965 31.7 32.5 30.0 28.0 25.1 22.6 19.4 21.1 23.8 26.4 28.6 30.9 31.4 27.7 21.0 26.3 26.60 1966 31.3 30.2 30.6 27.9 22.5 20.8 18.8 20.1 21.8 25.2 27.0 29.8 30.8 27.0 19.9 24.7 25.59 1967 29.7 999.9 30.0 28.3 25.3 19.4 18.3 20.3 23.5 27.5 30.3 29.2 29.8 27.9 19.3 27.1 26.03 1968 31.2 31.2 30.2 27.7 22.2 22.0 18.8 19.1 23.6 27.0 29.1 30.0 30.5 26.7 20.0 26.6 25.94 1969 31.6 30.5 30.6 27.2 24.6 19.4 19.6 20.5 22.6 26.7 28.6 29.3 30.7 27.5 19.8 26.0 25.99 1970 31.7 30.9 30.4 27.9 23.1 22.1 19.9 21.2 22.6 27.7 28.0 31.1 30.6 27.1 21.1 26.1 26.23 1971 30.6 30.7 30.5 27.2 23.4 19.2 18.5 20.8 23.9 26.1 27.0 30.4 30.8 27.0 19.5 25.7 25.75 1972 30.4 31.7 30.2 27.7 23.9 21.6 20.3 20.9 24.9 26.7 30.5 32.0 30.8 27.3 20.9 27.4 26.60 1973 31.1 32.3 31.5 28.4 24.9 21.1 22.9 22.4 23.0 27.2 29.3 31.2 31.8 28.3 22.1 26.5 27.18 1974 29.8 30.5 30.5 26.7 23.5 20.6 20.1 22.1 24.1 26.0 27.3 30.5 30.5 26.9 20.9 25.8 26.03 1975 30.8 30.1 31.1 28.4 24.3 20.9 21.2 20.5 24.9 25.2 28.6 30.3 30.5 27.9 20.9 26.2 26.38 1976 30.1 30.9 29.2 27.7 23.1 20.1 19.6 21.3 22.9 24.7 26.6 30.6 30.4 26.7 20.3 24.7 25.54 1977 31.7 31.9 29.8 28.2 23.8 20.3 19.7 21.6 22.5 27.3 29.4 30.4 31.4 27.3 20.5 26.4 26.40 1978 31.8 30.9 31.1 28.2 22.6 19.6 17.9 20.8 21.7 26.3 28.6 29.0 31.0 27.3 19.4 25.5 25.83 1979 30.3 30.8 30.9 28.5 22.3 21.4 19.4 22.2 23.5 26.8 30.0 31.8 30.0 27.2 21.0 26.8 26.26 1980 31.2 29.9 31.7 27.9 24.9 22.2 19.5 22.6 26.5 25.8 28.7 31.3 31.0 28.2 21.4 27.0 26.89 1981 31.4 29.8 29.4 29.7 24.2 20.3 19.7 21.8 25.9 27.5 27.0 29.7 30.8 27.8 20.6 26.8 26.50 1982 31.2 29.7 29.8 27.9 23.4 20.0 20.2 22.1 24.3 27.0 29.9 31.2 30.2 27.0 20.8 27.1 26.27 1983 30.3 31.4 30.5 26.4 23.7 20.9 19.2 21.6 25.6 27.1 28.9 30.6 31.0 26.9 20.6 27.2 26.40 1984 31.6 31.9 29.7 28.1 25.7 21.0 19.4 20.7 22.6 28.1 29.0 29.4 31.4 27.8 20.4 26.6 26.53 1985 31.2 31.4 31.0 28.9 24.1 20.4 20.0 21.5 23.6 24.9 29.5 29.9 30.7 28.0 20.6 26.0 26.33 1986 31.5 30.8 31.9 29.5 24.1 22.0 18.5 19.6 23.2 24.0 29.5 30.2 30.7 28.5 20.0 25.6 26.21 1987 30.6 30.8 31.3 29.4 24.5 21.8 20.8 21.2 24.0 25.5 27.3 30.0 30.5 28.4 21.3 25.6 26.45 1988 31.0 32.4 31.5 28.7 24.0 21.8 20.8 21.5 24.0 29.0 28.8 29.2 31.1 28.1 21.4 27.3 26.96 1989 31.2 30.9 29.6 27.7 23.8 19.7 19.5 20.2 24.6 26.2 28.5 29.9 30.4 27.0 19.8 26.4 25.93 1990 30.7 30.8 31.1 28.8 23.9 21.2 19.7 21.3 24.3 26.7 31.5 30.8 30.5 27.9 20.7 27.5 26.66 1991 31.5 31.0 31.4 28.9 24.4 22.3 20.5 22.1 23.5 29.4 27.0 30.2 31.1 28.2 21.6 26.6 26.90 1992 30.2 30.8 30.9 29.4 25.1 23.2 21.6 20.9 22.7 26.1 27.3 29.5 30.4 28.5 21.9 25.4 26.53 1993 31.4 31.0 31.1 30.2 25.0 21.1 19.0 20.9 22.9 24.9 27.9 31.3 30.6 28.8 20.3 25.2 26.24 1994 32.1 31.2 30.7 27.5 24.1 999.9 19.8 21.3 24.6 28.2 29.7 30.7 31.5 27.4 20.7 27.5 26.79 1995 30.3 28.7 29.4 28.1 22.8 20.6 19.3 22.5 23.8 25.4 28.4 28.7 29.9 26.8 20.8 25.9 25.83 1996 31.0 30.0 30.5 28.1 23.2 23.2 20.7 21.9 23.5 27.7 28.2 30.1 29.9 27.3 21.9 26.5 26.39 1997 29.2 29.2 30.1 27.4 23.1 20.1 18.5 20.5 22.7 26.6 27.8 30.0 29.5 26.9 19.7 25.7 25.44 1998 29.9 31.4 30.9 28.6 25.8 20.7 19.5 22.1 24.4 28.0 28.8 29.7 30.4 28.4 20.8 27.1 26.68 1999 30.8 28.4 29.9 25.4 23.4 21.0 18.8 21.5 23.7 25.5 27.3 29.2 29.6 26.2 20.4 25.5 25.45 2000 28.5 29.9 28.4 27.3 20.8 18.7 20.0 19.6 24.1 26.0 26.8 30.2 29.2 25.5 19.4 25.6 24.94 2001 30.2 29.4 28.9 27.7 24.3 20.1 19.4 21.1 23.1 24.0 27.2 27.7 29.9 27.0 20.2 24.8 25.47 2002 30.5 29.5 31.2 28.9 25.5 20.0 19.9 20.9 22.0 27.5 29.0 30.2 29.2 28.5 20.3 26.2 26.05 2003 30.9 30.9 29.5 27.5 24.6 21.7 20.2 20.5 23.0 25.1 28.3 29.0 30.7 27.2 20.8 25.5 26.03 2004 30.7 29.7 30.0 28.4 23.0 21.4 20.9 19.9 22.5 28.4 29.6 31.2 29.8 27.1 20.7 26.8 26.13 2005 31.9 31.8 31.5 30.0 25.1 19.8 20.2 20.5 22.8 25.1 28.3 29.9 31.6 28.9 20.2 25.4 26.52 2006 29.7 30.5 30.2 27.0 23.2 19.1 17.7 21.3 24.0 28.6 30.4 30.5 30.0 26.8 19.4 27.7 25.97 2007 30.9 31.4 28.9 28.1 24.3 19.0 19.8 20.5 24.0 26.4 29.2 29.6 30.9 27.1 19.8 26.5 26.08 2008 32.2 31.2 30.8 29.3 24.8 21.3 19.3 21.6 25.5 28.7 27.7 30.2 31.0 28.3 20.7 27.3 26.83 2009 31.7 31.1 30.7 29.3 23.8 21.2 21.1 21.7 23.9 28.3 30.2 32.2 31.0 27.9 21.3 27.5 26.93 2010 31.8 31.4 32.4 29.4 999.9 23.3 21.8 22.3 24.1 999.9 999.9 999.9 31.8 29.1 22.5 999.9 27.79