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 1902 17.3 19.4 20.8 17.0 14.1 10.5 10.1 12.3 12.9 12.9 16.5 17.3 17.7 17.3 11.0 14.1 15.01 1903 22.3 22.0 16.9 14.4 13.7 12.1 10.5 13.0 13.8 15.1 16.9 19.6 20.5 15.0 11.9 15.3 15.67 1904 22.2 20.8 21.2 17.0 12.9 11.5 10.7 12.2 12.8 13.6 17.3 20.1 20.9 17.0 11.5 14.6 15.98 1905 19.4 20.6 18.8 17.5 14.0 11.5 10.6 10.4 12.4 14.7 17.0 21.3 20.0 16.8 10.8 14.7 15.58 1906 22.0 20.4 19.6 17.9 14.2 12.3 9.9 11.4 11.0 15.2 17.4 21.3 21.2 17.2 11.2 14.5 16.05 1907 22.1 22.4 20.3 17.0 13.7 11.9 11.7 12.5 12.8 13.9 16.0 18.1 21.9 17.0 12.0 14.2 16.30 1908 19.8 20.0 17.7 16.6 13.0 9.1 10.3 10.6 11.5 14.6 17.2 20.2 19.3 15.8 10.0 14.4 14.88 1909 21.4 21.5 19.2 15.2 13.7 11.6 9.9 10.9 13.0 14.0 16.2 22.2 21.0 16.0 10.8 14.4 15.57 1910 21.8 23.5 21.8 18.6 13.3 11.2 9.9 11.9 13.4 13.1 16.3 18.9 22.5 17.9 11.0 14.3 16.42 1911 22.4 21.8 18.9 16.2 12.7 10.0 10.5 10.7 12.3 14.7 17.4 18.3 21.0 15.9 10.4 14.8 15.54 1912 22.3 22.3 20.7 17.6 14.1 11.6 10.9 11.9 12.1 14.6 16.8 20.9 21.0 17.5 11.5 14.5 16.10 1913 21.8 21.8 20.2 16.5 13.8 12.2 10.8 11.2 13.2 13.9 17.2 18.9 21.5 16.8 11.4 14.8 16.12 1914 22.7 20.3 19.2 15.2 13.3 12.5 11.8 13.6 15.3 18.2 18.8 21.3 20.6 15.9 12.6 17.4 16.65 1915 24.2 23.3 19.5 19.1 14.3 12.7 11.6 11.6 12.1 15.1 18.9 22.1 22.9 17.6 12.0 15.4 16.98 1916 20.7 21.2 19.3 16.1 14.0 10.7 9.8 10.7 14.5 14.0 18.3 20.1 21.3 16.5 10.4 15.6 15.95 1917 21.6 21.1 17.8 15.9 13.1 11.7 11.4 10.9 12.4 14.0 16.8 18.4 20.9 15.6 11.3 14.4 15.57 1918 23.6 21.6 18.8 18.6 14.3 12.7 10.5 11.3 13.9 14.4 18.6 19.1 21.2 17.2 11.5 15.6 16.39 1919 20.2 21.1 21.4 17.4 13.4 11.7 12.1 11.3 11.8 13.1 17.4 18.9 20.1 17.4 11.7 14.1 15.83 1920 23.9 21.1 20.3 17.6 14.0 11.8 9.6 10.4 13.7 15.2 18.9 20.1 21.3 17.3 10.6 15.9 16.28 1921 22.3 25.4 21.9 17.1 15.3 13.6 12.5 12.1 12.3 14.2 15.6 21.3 22.6 18.1 12.7 14.0 16.87 1922 20.3 21.4 19.9 16.5 12.8 11.7 9.7 11.7 11.8 14.3 17.0 17.5 21.0 16.4 11.0 14.4 15.70 1923 19.9 22.4 19.9 18.6 14.5 11.1 11.1 11.3 11.9 14.3 16.7 19.6 19.9 17.7 11.2 14.3 15.77 1924 999.9 21.1 18.6 18.1 13.6 11.8 12.6 11.3 13.8 13.4 16.7 21.2 20.7 16.8 11.9 14.6 15.99 1925 21.0 20.8 19.9 16.7 13.6 11.9 10.0 10.6 13.4 13.1 19.3 19.5 21.0 16.7 10.8 15.3 15.96 1926 23.1 19.6 19.1 16.3 13.6 11.4 10.9 10.8 12.7 14.5 18.0 19.1 20.7 16.3 11.0 15.1 15.79 1927 19.6 20.1 17.4 17.9 12.4 10.6 10.3 12.0 13.2 14.7 17.3 22.1 19.6 15.9 11.0 15.1 15.38 1928 21.3 20.1 19.1 16.8 12.8 11.4 10.4 12.2 12.1 13.1 17.4 20.0 21.2 16.2 11.3 14.2 15.73 1929 20.4 22.0 19.1 15.7 13.4 11.2 9.6 11.1 11.8 14.4 17.3 19.9 20.8 16.1 10.6 14.5 15.50 1930 22.0 21.8 22.3 17.6 14.8 13.9 10.7 11.6 13.0 14.4 17.3 18.7 21.2 18.2 12.1 14.9 16.61 1931 21.9 19.5 20.0 16.7 12.0 8.8 11.0 11.2 12.3 15.0 18.3 23.7 20.0 16.2 10.3 15.2 15.45 1932 23.5 23.2 18.5 16.6 14.1 11.7 10.9 10.2 13.0 14.9 17.5 20.1 23.5 16.4 10.9 15.1 16.48 1933 22.8 24.5 20.3 17.6 13.6 12.9 10.4 10.9 13.6 14.9 18.4 21.0 22.5 17.2 11.4 15.6 16.67 1934 23.5 23.2 21.5 16.9 15.4 11.5 10.8 11.6 12.7 13.4 16.0 19.2 22.6 17.9 11.3 14.0 16.46 1935 22.0 21.2 19.3 16.7 13.8 10.6 10.3 11.1 11.9 13.4 16.1 20.1 20.8 16.6 10.7 13.8 15.47 1936 21.3 21.1 21.4 16.8 12.8 11.1 10.3 12.1 13.7 14.0 17.9 21.2 20.8 17.0 11.2 15.2 16.05 1937 21.5 21.6 19.9 19.1 14.0 11.8 10.6 11.1 12.9 14.8 18.5 19.0 21.4 17.7 11.2 15.4 16.42 1938 21.2 20.6 19.2 16.8 13.4 10.9 10.7 11.7 14.0 14.6 17.3 19.4 20.3 16.5 11.1 15.3 15.78 1939 20.0 21.8 19.7 17.0 14.4 11.1 10.7 11.4 13.0 15.1 17.3 21.1 20.4 17.0 11.1 15.1 15.91 1940 21.8 23.7 19.5 16.0 13.3 12.8 11.1 12.1 13.4 14.9 18.7 19.5 22.2 16.3 12.0 15.7 16.53 1941 23.2 22.7 19.3 16.2 14.4 13.2 11.9 12.8 12.4 14.7 17.1 21.5 21.8 16.6 12.6 14.7 16.45 1942 21.8 22.0 19.1 17.7 14.4 11.7 10.5 11.8 12.3 13.6 18.3 21.4 21.8 17.1 11.3 14.7 16.23 1943 20.3 21.5 20.4 16.5 13.4 12.3 9.3 10.6 12.4 14.1 18.8 20.3 21.1 16.8 10.7 15.1 15.92 1944 22.5 22.4 19.2 16.8 12.9 13.3 11.5 12.2 13.0 16.4 18.9 18.4 21.7 16.3 12.3 16.1 16.62 1945 21.0 22.8 20.6 19.0 15.1 12.5 10.9 11.7 12.4 15.2 17.8 19.6 20.7 18.2 11.7 15.1 16.45 1946 19.7 20.2 18.7 17.8 14.4 11.6 11.2 11.1 13.9 15.8 16.9 20.3 19.8 17.0 11.3 15.5 15.91 1947 21.0 22.8 21.4 17.1 13.7 13.0 11.4 11.2 12.3 14.4 17.4 18.7 21.4 17.4 11.9 14.7 16.33 1948 22.3 23.4 23.2 16.3 14.6 12.4 11.1 12.3 12.5 15.4 16.9 18.4 21.5 18.0 11.9 14.9 16.59 1949 23.4 23.0 20.4 18.6 14.2 13.1 12.5 13.3 13.1 13.8 18.4 22.0 21.6 17.7 13.0 15.1 16.85 1950 23.0 22.7 21.8 18.1 14.5 12.5 11.5 12.2 12.6 13.4 15.7 18.8 22.6 18.1 12.1 13.9 16.67 1951 20.8 21.7 20.7 16.4 12.8 11.8 10.3 9.8 13.7 14.6 17.2 19.5 20.4 16.6 10.6 15.2 15.72 1952 22.1 22.8 20.1 17.8 13.1 13.0 9.9 11.6 12.2 13.5 16.1 17.6 21.5 17.0 11.5 13.9 15.97 1953 22.0 21.8 21.0 16.9 14.4 11.6 11.9 11.1 14.0 13.9 16.8 18.6 20.5 17.4 11.5 14.9 16.08 1954 23.2 22.9 19.7 15.3 13.5 11.9 12.1 12.0 13.8 16.0 15.2 19.8 21.6 16.2 12.0 15.0 16.18 1955 23.2 24.0 21.0 16.9 13.6 10.7 10.8 11.9 12.6 13.8 16.8 19.7 22.3 17.2 11.1 14.4 16.26 1956 24.0 23.2 21.2 15.4 13.5 10.6 10.7 10.5 13.2 13.5 17.9 18.9 22.3 16.7 10.6 14.9 16.12 1957 22.8 21.9 20.0 17.2 14.8 13.6 10.5 12.8 13.0 15.6 18.4 20.6 21.2 17.3 12.3 15.7 16.62 1958 24.1 22.4 20.9 16.3 14.9 12.5 10.4 11.5 12.5 13.9 18.3 22.6 22.4 17.4 11.5 14.9 16.53 1959 21.9 23.3 21.6 16.8 14.5 13.9 12.8 13.5 13.3 15.0 17.3 18.3 22.6 17.6 13.4 15.2 17.21 1960 19.8 21.9 18.8 15.0 12.4 11.7 10.4 10.8 12.4 15.0 17.2 21.4 20.0 15.4 11.0 14.9 15.31 1961 24.6 23.6 21.3 15.8 14.9 12.7 10.8 11.8 14.1 15.3 17.9 20.8 23.2 17.3 11.8 15.8 17.02 1962 25.1 22.7 19.0 18.8 16.0 13.9 11.3 12.8 12.8 13.3 17.4 21.9 22.9 17.9 12.7 14.5 16.99 1963 22.4 22.7 22.2 17.7 15.4 12.6 11.4 12.2 13.8 16.6 18.6 21.5 22.3 18.4 12.1 16.3 17.29 1964 21.8 22.0 20.8 16.0 13.2 13.8 12.1 11.6 12.3 12.4 16.1 19.6 21.8 16.7 12.5 13.6 16.13 1965 22.9 21.9 20.4 18.0 13.5 12.4 11.0 11.5 13.2 15.9 17.0 21.6 21.5 17.3 11.6 15.4 16.44 1966 22.9 21.9 20.4 17.3 13.6 11.6 11.4 11.0 12.5 14.7 18.2 20.9 22.1 17.1 11.3 15.1 16.43 1967 22.9 24.7 20.0 17.8 14.3 13.6 11.1 10.9 13.8 16.5 18.3 21.6 22.8 17.4 11.9 16.2 17.07 1968 23.0 22.0 18.3 14.9 12.3 11.8 11.1 10.4 11.9 13.5 15.9 19.7 22.2 15.2 11.1 13.8 15.56 1969 20.9 22.7 20.2 17.0 14.0 12.7 10.9 11.2 11.7 17.5 18.9 999.9 21.1 17.1 11.6 16.0 16.45 1970 22.6 24.3 21.4 16.1 13.9 12.4 12.3 11.5 12.8 14.4 17.2 22.0 22.8 17.1 12.1 14.8 16.69 1971 22.0 21.9 20.7 16.1 14.0 12.3 11.7 11.3 12.2 13.3 15.5 19.3 22.0 16.9 11.8 13.7 16.08 1972 23.4 25.0 21.3 17.3 16.2 12.2 11.3 11.2 13.5 15.4 19.6 23.5 22.6 18.3 11.6 16.2 17.14 1973 999.9 22.3 20.3 17.3 14.2 10.4 11.9 11.3 12.6 14.8 17.9 20.4 23.2 17.3 11.2 15.1 16.69 1974 24.1 22.3 22.0 16.7 13.8 12.4 11.5 12.3 13.9 13.9 16.2 20.7 22.3 17.5 12.1 14.7 16.62 1975 21.9 25.8 19.8 16.6 14.0 12.8 11.8 11.6 12.2 15.1 17.5 999.9 22.8 16.8 12.1 14.9 16.65 1976 22.3 24.5 22.3 19.3 15.2 12.4 12.7 12.4 13.8 16.9 16.2 20.1 22.7 18.9 12.5 15.6 17.45 1977 22.8 24.4 19.6 18.7 14.0 12.6 12.2 12.9 12.5 15.5 18.0 23.5 22.4 17.4 12.6 15.3 16.94 1978 25.1 24.2 23.8 19.6 14.6 11.9 11.0 12.1 12.3 999.9 999.9 999.9 24.3 19.3 11.7 999.9 17.99 1979 22.3 23.0 21.2 17.1 13.1 12.6 11.2 10.6 12.8 15.5 999.9 999.9 22.0 17.1 11.5 15.4 16.49 1980 999.9 22.7 21.9 15.3 15.2 11.9 11.4 12.5 13.1 13.1 17.7 19.7 999.9 17.5 11.9 14.6 16.42 1981 23.3 20.3 21.4 18.3 14.3 10.3 11.6 11.1 13.9 15.2 16.2 19.7 21.1 18.0 11.0 15.1 16.30 1982 20.7 22.2 19.4 17.1 14.2 11.3 10.4 999.9 13.0 15.6 19.9 20.7 20.9 16.9 10.9 16.2 16.20 1983 24.0 21.5 22.7 17.9 15.9 14.1 11.5 13.5 14.3 16.0 18.2 21.6 22.1 18.8 13.0 16.2 17.52 1984 23.3 23.4 19.6 18.6 14.6 12.3 11.4 11.3 13.2 15.2 17.6 18.1 22.8 17.6 11.7 15.3 16.84 1985 21.8 26.3 22.3 17.2 13.9 13.9 12.2 12.2 13.9 14.7 18.9 18.5 22.1 17.8 12.8 15.8 17.12 1986 23.6 20.7 19.7 999.9 14.5 12.6 10.4 999.9 999.9 999.9 999.9 999.9 20.9 17.1 11.5 999.9 16.08 1987 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 15.0 999.9 999.9 999.9 999.9 999.9 999.9 999.90 1988 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.90 1989 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.90 1990 20.3 23.2 21.2 999.9 999.9 10.1 9.9 10.6 13.4 14.4 17.1 19.5 21.1 999.9 10.2 15.0 15.69 1991 22.9 22.2 20.9 17.9 14.8 12.9 11.5 12.1 12.8 15.9 16.1 21.4 21.5 17.9 12.2 14.9 16.62 1992 24.0 22.5 999.9 18.0 13.8 12.2 12.7 11.1 11.8 999.9 999.9 999.9 22.6 17.5 12.0 999.9 16.94