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 1899 19.5 21.8 20.5 19.2 14.1 12.6 10.8 13.0 13.8 17.0 16.5 20.4 20.2 17.9 12.1 15.8 16.50 1900 19.7 22.2 19.1 16.4 13.4 13.8 10.6 12.5 13.0 17.2 17.7 19.5 20.8 16.3 12.3 16.0 16.33 1901 20.3 20.6 19.7 17.2 16.2 12.7 10.7 12.2 15.0 16.0 19.4 20.7 20.1 17.7 11.9 16.8 16.62 1902 20.6 20.7 18.8 19.4 15.6 13.0 11.8 11.7 14.6 16.4 18.4 18.8 20.7 17.9 12.2 16.5 16.81 1903 22.0 20.3 19.4 18.0 14.1 13.2 10.8 12.7 14.3 16.0 17.7 17.7 20.4 17.2 12.2 16.0 16.44 1904 19.9 20.3 19.0 19.5 15.2 13.5 11.0 12.6 14.1 16.1 18.0 20.4 19.3 17.9 12.4 16.1 16.41 1905 21.3 20.2 19.2 17.8 16.3 12.2 11.6 12.0 12.0 14.8 17.3 19.7 20.6 17.8 11.9 14.7 16.26 1906 22.3 24.2 19.1 18.2 16.6 14.2 13.0 12.5 13.2 16.2 15.9 20.5 22.1 18.0 13.2 15.1 17.09 1907 19.1 21.8 19.1 17.3 15.4 12.4 12.8 14.2 16.1 16.6 17.7 18.4 20.5 17.3 13.1 16.8 16.92 1908 22.2 21.1 18.8 18.0 14.4 12.6 10.8 10.7 13.7 16.1 17.9 20.5 20.6 17.1 11.4 15.9 16.23 1909 20.0 20.0 19.7 17.1 15.1 12.2 11.5 12.1 14.7 16.9 18.0 19.5 20.2 17.3 11.9 16.5 16.48 1910 21.8 20.9 21.0 18.0 15.7 12.6 12.1 13.8 15.2 15.5 18.0 18.8 20.7 18.2 12.8 16.2 17.01 1911 21.3 20.4 20.4 17.7 14.6 12.5 12.6 12.5 13.6 16.1 20.3 19.1 20.2 17.6 12.5 16.7 16.73 1912 22.1 23.5 21.8 18.0 16.1 12.5 12.3 13.1 15.2 16.3 17.2 20.5 21.6 18.6 12.6 16.2 17.27 1913 20.8 21.2 19.2 17.9 13.6 12.9 11.9 13.8 13.8 16.9 19.6 20.6 20.8 16.9 12.9 16.8 16.84 1914 21.4 21.8 20.7 18.3 15.3 12.6 12.0 13.8 15.2 18.8 999.9 20.5 21.3 18.1 12.8 17.9 17.51 1915 20.8 22.6 19.8 18.6 15.8 13.9 12.6 13.4 14.5 15.9 17.8 19.4 21.3 18.1 13.3 16.1 17.18 1916 21.0 21.5 20.7 16.7 16.2 12.3 11.6 12.4 14.2 14.5 16.5 18.6 20.6 17.9 12.1 15.1 16.42 1917 19.7 20.0 20.0 16.7 14.0 11.9 12.7 12.5 14.3 14.8 17.3 19.9 19.4 16.9 12.4 15.5 16.04 1918 21.3 20.9 19.4 17.9 15.1 13.7 11.5 12.0 16.0 16.7 19.0 20.1 20.7 17.5 12.4 17.2 16.95 1919 20.8 21.0 20.9 18.4 14.6 14.0 13.9 13.2 13.7 16.2 18.4 20.1 20.6 18.0 13.7 16.1 17.10 1920 20.6 21.0 20.7 16.2 15.5 12.7 11.2 12.7 14.4 16.7 17.9 20.1 20.6 17.5 12.2 16.3 16.64 1921 21.8 22.3 21.2 18.7 17.3 14.1 13.2 12.7 14.9 16.8 17.3 18.2 21.4 19.1 13.3 16.3 17.53 1922 19.9 20.2 20.7 18.4 14.3 13.1 11.3 12.9 13.5 17.3 18.9 18.6 19.4 17.8 12.4 16.6 16.56 1923 20.5 21.8 21.0 19.0 16.6 12.6 12.2 12.4 13.9 16.1 17.5 18.3 20.3 18.9 12.4 15.8 16.85 1924 19.7 19.7 18.4 16.4 16.2 12.9 12.1 12.3 14.5 15.8 17.5 19.1 19.2 17.0 12.4 15.9 16.15 1925 20.1 20.6 20.2 18.1 15.3 13.5 11.8 11.4 14.3 16.0 18.7 20.4 19.9 17.9 12.2 16.3 16.59 1926 20.1 21.6 19.6 18.7 14.5 13.0 14.2 11.9 15.4 17.3 19.2 18.8 20.7 17.6 13.0 17.3 17.16 1927 21.0 20.1 19.8 17.4 15.5 999.9 999.9 999.9 999.9 999.9 999.9 999.9 20.0 17.6 999.9 999.9 999.90 1928 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 1929 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 1930 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 1931 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 1932 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 1933 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 1934 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 1935 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 1936 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 1937 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 1938 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 1939 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 1940 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 1941 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 1942 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 1943 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 1944 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 1945 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 1946 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 1947 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 1948 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 1949 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 1950 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 1951 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 1952 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 1953 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 1954 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 1955 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 1956 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 1957 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 1958 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 1959 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 1960 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 1961 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 1962 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 1963 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 1964 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 1965 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 1966 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 1967 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 1968 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 1969 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 1970 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 1971 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 1972 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 1973 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 1974 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 1975 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 1976 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 1977 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 1978 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 1979 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 1980 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 1981 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 1982 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 1983 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 20.1 999.9 999.9 999.9 999.9 999.90 1984 19.8 21.5 19.2 17.7 15.4 12.5 11.4 13.0 12.6 17.8 18.1 20.0 20.5 17.4 12.3 16.2 16.59 1985 21.5 22.6 20.0 18.5 14.8 999.9 12.4 13.1 15.2 15.9 17.6 19.1 21.4 17.8 13.0 16.2 17.09 1986 20.6 999.9 999.9 17.1 14.8 999.9 11.3 11.5 999.9 999.9 999.9 999.9 20.2 17.1 11.6 999.9 16.14 1987 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 16.5 999.9 999.9 999.9 999.9 999.9 999.9 999.90 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 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 999.9 16.6 17.5 19.4 999.9 999.9 999.9 16.1 999.90 1991 21.2 22.7 19.6 18.6 15.9 13.5 12.4 13.1 14.5 18.3 18.3 18.8 21.1 18.0 13.0 17.0 17.29 1992 19.8 21.2 20.8 17.7 15.1 12.9 11.8 12.0 13.1 15.8 999.9 999.9 19.9 17.9 12.2 15.3 16.34