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 1945 999.9 27.9 27.3 24.5 21.5 19.4 17.3 17.5 18.6 21.7 24.4 24.8 999.9 24.4 18.1 21.6 22.80 1946 999.9 26.5 24.9 24.4 999.9 17.1 17.5 17.2 19.8 22.6 999.9 25.4 25.8 23.0 17.3 22.2 22.06 1947 25.6 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 26.2 999.9 999.9 999.9 999.90 1948 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 19.1 21.7 21.7 23.6 999.9 999.9 999.9 20.8 999.90 1949 26.8 27.1 26.8 24.6 18.7 18.5 18.7 18.0 18.1 20.9 22.8 25.7 25.8 23.4 18.4 20.6 22.05 1950 28.4 28.1 27.1 24.5 20.4 16.8 16.4 18.0 19.2 20.3 22.0 23.3 27.4 24.0 17.1 20.5 22.24 1951 24.5 26.7 26.5 24.1 19.6 16.8 15.1 16.2 18.7 20.3 21.7 23.4 24.8 23.4 16.0 20.2 21.12 1952 27.9 26.8 26.3 26.0 19.1 17.5 16.1 16.4 19.2 20.5 21.0 23.9 26.0 23.8 16.7 20.2 21.68 1953 26.4 26.0 26.2 23.4 20.0 17.0 17.0 16.0 18.5 19.6 22.4 23.4 25.4 23.2 16.7 20.2 21.37 1954 26.4 27.2 25.6 22.5 19.1 16.3 17.2 17.4 19.3 21.2 22.2 25.2 25.7 22.4 17.0 20.9 21.48 1955 27.5 29.7 27.6 23.6 21.1 15.1 16.2 17.1 19.0 19.3 23.2 24.2 27.5 24.1 16.1 20.5 22.05 1956 28.0 26.9 26.0 23.2 19.1 16.2 15.6 16.7 20.2 20.2 22.7 25.3 26.4 22.8 16.2 21.0 21.58 1957 26.6 27.8 25.8 23.2 21.6 18.1 14.5 17.0 19.2 22.1 24.8 25.3 26.6 23.5 16.5 22.0 22.17 1958 25.3 28.3 27.3 23.7 20.5 19.4 16.4 16.4 19.5 20.9 23.5 25.3 26.3 23.8 17.4 21.3 22.21 1959 25.8 26.2 27.5 22.6 21.6 19.7 18.5 18.8 20.3 20.5 22.6 23.6 25.8 23.9 19.0 21.1 22.45 1960 25.3 27.1 24.2 22.8 18.3 17.2 16.6 16.2 18.5 21.2 23.3 24.8 25.3 21.8 16.7 21.0 21.19 1961 27.3 28.4 26.7 22.1 21.2 18.0 16.5 16.8 19.5 22.3 23.6 23.6 26.8 23.3 17.1 21.8 22.27 1962 28.7 28.3 25.0 24.3 21.4 18.8 16.4 16.8 18.8 19.5 22.5 24.6 26.9 23.6 17.3 20.3 22.01 1963 27.7 28.2 28.3 24.1 20.8 17.6 16.2 17.6 19.1 21.9 22.9 24.3 26.8 24.4 17.1 21.3 22.42 1964 26.3 25.4 26.2 22.6 20.1 18.5 16.8 17.0 18.3 19.3 22.1 23.9 25.3 23.0 17.4 19.9 21.41 1965 26.4 26.5 27.2 24.2 20.2 18.9 16.7 16.4 18.4 20.8 21.5 25.8 25.6 23.9 17.3 20.2 21.76 1966 26.9 26.3 25.2 23.7 19.3 16.5 16.2 16.2 17.3 21.1 23.1 25.8 26.3 22.7 16.3 20.5 21.47 1967 27.4 28.8 26.4 23.8 20.5 18.9 15.5 15.5 19.4 21.0 22.8 24.6 27.3 23.6 16.6 21.1 22.15 1968 25.9 28.5 24.0 21.3 18.3 17.3 15.9 15.1 18.1 20.3 22.4 24.8 26.3 21.2 16.1 20.3 20.97 1969 25.3 26.6 26.5 24.3 20.6 17.6 16.1 16.7 19.2 22.4 23.4 25.5 25.6 23.8 16.8 21.7 21.96 1970 25.7 27.6 26.5 23.0 19.0 17.8 16.8 18.5 18.2 22.3 22.3 24.2 26.3 22.8 17.7 20.9 21.93 1971 25.4 28.1 26.5 23.3 20.2 17.8 17.5 17.0 18.2 19.8 20.4 23.9 25.9 23.3 17.4 19.5 21.53 1972 27.2 29.2 27.1 23.6 21.4 17.9 16.1 16.2 19.1 21.7 23.1 27.2 26.8 24.0 16.7 21.3 22.21 1973 27.6 26.5 27.5 23.0 21.1 17.2 16.8 17.1 18.5 20.7 22.9 25.5 27.1 23.9 17.0 20.7 22.17 1974 29.9 28.7 28.3 24.2 20.8 17.4 17.1 17.3 20.0 20.3 22.3 25.5 28.0 24.4 17.3 20.9 22.65 1975 25.0 29.1 26.4 23.1 20.1 17.6 16.7 17.0 18.9 20.3 23.2 26.3 26.5 23.2 17.1 20.8 21.91 1976 27.5 28.4 27.9 23.1 21.4 18.7 17.5 18.4 18.7 21.5 22.1 25.9 27.4 24.1 18.2 20.8 22.62 1977 26.9 28.5 26.7 25.1 19.9 19.3 17.7 18.2 18.6 21.2 23.6 24.9 27.1 23.9 18.4 21.1 22.63 1978 27.6 29.1 28.7 25.9 20.0 16.5 16.7 17.1 18.5 21.6 24.7 24.7 27.2 24.9 16.8 21.6 22.61 1979 25.3 28.4 26.5 23.1 19.2 17.7 16.5 16.8 18.5 21.9 23.2 26.0 26.1 22.9 17.0 21.2 21.82 1980 28.3 28.9 28.8 22.9 21.8 16.8 16.4 18.4 19.7 19.7 21.9 24.9 27.7 24.5 17.2 20.4 22.47 1981 28.3 27.9 25.7 24.3 21.8 16.5 16.1 17.5 20.5 21.9 22.9 24.9 27.0 23.9 16.7 21.8 22.36 1982 26.7 27.0 26.3 24.3 20.5 16.3 15.5 18.5 19.7 23.3 25.1 24.8 26.2 23.7 16.8 22.7 22.34 1983 27.5 26.0 27.3 24.5 21.2 19.3 15.8 18.8 20.9 22.4 22.9 24.9 26.1 24.3 18.0 22.1 22.62 1984 27.5 30.6 25.7 24.0 19.5 18.4 16.3 16.9 18.0 21.3 23.1 23.6 27.7 23.1 17.2 20.8 22.18 1985 25.8 31.3 27.6 24.3 20.2 18.7 17.0 16.3 19.2 21.2 22.9 23.7 26.9 24.0 17.3 21.1 22.34 1986 27.2 26.9 27.3 24.7 19.8 18.0 15.1 15.8 18.2 19.9 22.9 24.4 25.9 23.9 16.3 20.3 21.62 1987 25.6 29.3 27.1 25.0 19.5 18.1 18.4 18.9 20.9 21.5 22.9 24.0 26.4 23.9 18.5 21.8 22.63 1988 26.2 29.8 28.7 26.1 20.1 19.2 17.8 19.3 19.9 21.9 24.5 26.2 26.7 25.0 18.8 22.1 23.12 1989 27.5 29.1 27.9 24.7 21.9 17.8 15.3 16.8 19.4 20.1 24.0 24.1 27.6 24.8 16.6 21.2 22.56 1990 25.9 26.9 27.3 24.3 20.3 16.9 15.9 16.5 19.9 20.2 23.4 24.5 25.6 24.0 16.4 21.2 21.80 1991 25.7 28.5 25.3 25.8 21.9 18.7 17.7 18.1 18.6 21.0 21.8 24.2 26.2 24.3 18.2 20.5 22.30 1992 26.9 26.4 25.2 23.7 19.3 18.2 17.5 16.8 18.1 20.9 22.6 24.7 25.8 22.7 17.5 20.5 21.65 1993 26.4 26.7 25.1 23.9 20.7 17.0 16.1 17.3 18.5 20.5 22.9 25.0 25.9 23.2 16.8 20.6 21.65 1994 26.7 26.7 27.9 25.7 22.1 999.9 16.9 18.9 20.1 21.9 23.0 25.2 26.1 25.2 18.2 21.7 22.80 1995 26.0 28.1 27.3 24.4 19.8 17.0 16.6 17.9 19.7 21.6 23.1 24.9 26.4 23.8 17.2 21.5 22.22 1996 26.2 29.1 26.4 25.1 20.7 18.8 18.1 16.6 19.5 21.7 24.0 24.8 26.7 24.1 17.8 21.7 22.59 1997 28.3 27.1 25.5 23.8 19.8 17.1 15.0 16.4 18.7 22.1 23.0 25.2 26.7 23.0 16.2 21.3 21.80 1998 26.3 27.4 27.3 24.9 23.0 17.7 16.1 18.1 18.6 21.0 23.8 26.3 26.3 25.1 17.3 21.1 22.45 1999 26.0 28.3 27.3 999.9 22.4 999.9 999.9 18.4 999.9 999.9 999.9 26.1 26.9 25.0 999.9 999.9 999.90 2000 28.1 30.6 999.9 24.0 18.8 17.7 16.9 999.9 19.6 21.9 23.5 25.9 28.3 22.9 17.3 21.7 22.54 2001 26.4 28.2 26.3 24.8 20.4 17.4 17.5 999.9 999.9 20.8 23.4 24.7 26.8 23.8 17.5 21.1 22.31 2002 25.7 28.2 27.2 24.2 22.1 18.6 17.5 16.9 19.2 20.3 23.6 25.4 26.2 24.5 17.7 21.0 22.35 2003 27.3 27.5 26.6 23.8 21.9 18.0 16.3 17.5 19.2 21.1 23.3 25.0 26.7 24.1 17.3 21.2 22.32 2004 26.0 27.8 26.2 25.1 19.2 19.1 17.0 16.0 18.3 21.0 22.7 24.5 26.3 23.5 17.4 20.7 21.95 2005 27.4 26.4 28.1 23.9 22.7 17.1 16.1 16.3 18.0 19.5 22.0 22.7 26.1 24.9 16.5 19.8 21.83 2006 25.1 26.8 28.0 22.6 20.6 16.8 15.2 18.5 19.9 21.5 22.7 25.3 24.9 23.7 16.8 21.4 21.70 2007 24.5 26.0 26.9 22.6 20.4 17.6 17.5 17.1 19.4 21.0 24.5 24.0 25.3 23.3 17.4 21.6 21.90 2008 26.9 27.8 27.1 23.5 20.6 17.3 16.5 17.2 19.1 22.1 21.7 24.8 26.2 23.7 17.0 21.0 21.98 2009 27.4 28.1 26.2 24.4 20.1 17.3 16.7 17.7 18.3 20.8 999.9 999.9 26.8 23.6 17.2 20.5 22.02