|
Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1896 | 18.8 ] | 15.4 | 15.4 ] | ||||||||||
1897 | 16.5 | 13.6 | 18.4 | 18.7 | 21.9 | 23.9 | 26.8 | 27.3 | 26.4 | 22.2 | 20.4 | 15.4 | 21.0 |
1898 | 15.6 | 15.5 | 17.7 | 19.5 | 23.2 | 24.6 | 26.9 | 27.4 | 26.2 | 23.3 | 20.9 | 16.0 | 21.4 |
1899 | 13.8 | 14.8 | 15.8 | 19.0 | 21.8 | 24.7 | 26.6 | 27.1 | 25.6 | 20.5 | 18.3 | 17.4 | 20.5 |
1900 | 14.0 | 14.7 | 15.6 | 20.6 | 21.6 | 24.5 | 27.6 | 27.6 | 26.4 | 23.0 | 20.0 | 16.3 | 21.0 |
1901 | 16.2 | 11.0 | 14.4 | 19.1 | 21.3 | 24.7 | 27.5 | 27.2 | 25.4 | 23.4 | 18.2 | 15.1 | 20.3 |
1902 | 14.3 | 12.9 | 16.8 | 19.9 | 22.4 | 23.7 | 27.0 | 27.4 | 24.6 | 22.0 | 20.4 | 16.8 | 20.7 |
1903 | 14.3 | 14.2 | 18.3 | 19.8 | 21.2 | 24.0 | 26.9 | 27.8 | 26.2 | 23.3 | 18.4 | 14.7 | 20.8 |
1904 | 13.4 | 14.0 | 16.6 | 20.1 | 21.5 | 25.3 | 27.4 | 26.8 | 25.1 | 22.6 | 17.7 | 15.3 | 20.5 |
1905 | 15.6 | 13.5 | 16.7 | 19.1 | 22.7 | 26.1 | 28.0 | 27.8 | 25.6 | 22.8 | 19.7 | 17.7 | 21.3 |
1906 | 14.0 | 15.0 | 15.5 | 18.8 | 23.1 | 26.2 | 27.7 | 28.4 | 27.3 | 23.6 | 19.5 | 15.3 | 21.2 |
1907 | 15.1 | 13.2 | 16.1 | 19.0 | 21.0 | 23.7 | 26.8 | 26.7 | 25.7 | 23.3 | 20.4 | 15.8 | 20.6 |
1908 | 15.3 | 13.6 | 16.0 | 19.8 | 20.7 | 24.8 | 27.7 | 27.1 | 25.7 | 22.8 | 17.9 | 16.9 | 20.7 |
1909 | 15.2 | 14.4 | 16.8 | 19.0 | 20.5 | 26.3 | 27.6 | 27.1 | 26.6 | 23.1 | 19.7 | 15.7 | 21.0 |
1910 | 14.9 | 13.1 | 16.0 | 18.6 | 22.3 | 26.7 | 27.8 | 27.0 | 26.5 | 22.8 | 18.7 | 14.8 | 20.8 |
1911 | 14.2 | 15.3 | 17.2 | 18.9 | 22.0 | 26.1 | 27.1 | 27.1 | 26.4 | 21.9 | 19.0 | 16.3 | 21.0 |
1912 | 14.0 | 15.1 | 16.9 | 20.1 | 21.6 | 24.6 | 27.7 | 27.5 | 26.3 | 22.3 | 18.7 | 16.9 | 21.0 |
1913 | 14.1 | 14.2 | 14.9 | 21.2 | 21.9 | 26.3 | 27.0 | 28.0 | 26.3 | 22.7 | 19.4 | 15.7 | 21.0 |
1914 | 13.9 | 14.8 | 18.2 | 19.0 | 22.9 | 26.1 | 28.3 | 27.8 | 25.9 | 22.4 | 19.7 | 16.2 | 21.3 |
1915 | 14.2 | 15.4 | 15.1 | 20.5 | 20.7 | 26.4 | 28.1 | 27.9 | 26.1 | 24.1 | 21.6 | 16.7 | 21.4 |
1916 | 15.7 | 15.2 | 14.4 | 19.9 | 22.6 | 26.6 | 28.2 | 27.3 | 26.7 | 23.7 | 20.7 | 16.8 | 21.5 |
1917 | 12.0 | 12.5 | 15.1 | 18.5 | 19.8 | 25.6 | 27.4 | 27.7 | 26.8 | 23.1 | 17.9 | 13.8 | 20.0 |
1918 | 11.5 | 13.5 | 15.7 | 19.2 | 21.1 | 26.1 | 27.4 | 27.3 | 25.1 | 23.5 | 19.4 | 17.4 | 20.6 |
1919 | 15.2 | 14.7 | 17.9 | 19.0 | 21.8 | 26.9 | 27.6 | 27.4 | 24.6 | 22.0 | 19.4 | 15.8 | 21.0 |
1920 | 13.6 | 14.8 | 17.1 | 19.9 | 21.3 | 25.7 | 27.3 | 27.7 | 26.4 | 22.4 | 20.0 | 16.5 | 21.1 |
1921 | 14.6 | 13.9 | 15.8 | 20.3 | 21.9 | 25.6 | 27.0 | 27.7 | 25.6 | 21.9 | 18.4 | 15.7 | 20.7 |
1922 | 14.2 | 15.7 | 16.1 | 19.3 | 22.0 | 24.7 | 27.0 | 27.6 | 26.4 | 22.6 | 18.6 | 15.3 | 20.8 |
1923 | 13.5 | 14.1 | 17.2 | 19.8 | 22.8 | 25.4 | 27.6 | 27.6 | 26.5 | 22.4 | 19.4 | 15.8 | 21.0 |
1924 | 14.6 | 14.5 | 14.8 | 20.0 | 23.4 | 24.2 | 27.3 | 27.0 | 25.2 | 23.2 | 17.9 | 15.4 | 20.6 |
1925 | 13.5 | 13.1 | 15.0 | 17.5 | 21.8 | 25.9 | 27.6 | 27.4 | 25.8 | 22.3 | 19.5 | 14.7 | 20.3 |
1926 | 13.2 | 14.6 | 15.8 | 18.1 | 21.9 | 23.7 | 27.7 | 28.3 | 27.2 | 22.1 | 19.2 | 15.7 | 20.6 |
1927 | 13.8 | 14.4 | 15.6 | 18.9 | 20.7 | 23.7 | 28.1 | 28.2 | 25.3 | 22.2 | 19.2 | 16.6 | 20.6 |
1928 | 14.8 | 13.8 | 16.0 | 18.9 | 22.3 | 24.8 | 28.0 | 27.3 | 26.7 | 22.9 | 19.6 | 16.3 | 21.0 |
1929 | 14.1 | 13.9 | 15.6 | 18.8 | 21.6 | 25.5 | 28.1 | 27.9 | 25.8 | 22.5 | 18.2 | 17.5 | 20.8 |
1930 | 14.8 | 15.9 | 17.3 | 21.4 | 23.1 | 25.9 | 28.7 | 28.1 | 25.8 | 22.8 | 18.5 | 16.6 | 21.6 |
1931 | 15.3 | 16.2 | 16.7 | 19.6 | 21.8 | 24.6 | 29.3 | 28.2 | 27.2 | 22.9 | 20.6 | 16.5 | 21.6 |
1932 | 14.5 | 13.6 | 14.2 | 18.3 | 22.6 | 24.7 | 27.9 | 27.6 | 25.5 | 21.7 | 18.6 | 16.3 | 20.5 |
1933 | 13.7 | 14.1 | 15.7 | 20.2 | 22.7 | 25.7 | 27.9 | 28.1 | 26.6 | 22.9 | 19.0 | 16.4 | 21.1 |
1934 | 12.3 | 13.1 | 14.6 | 19.0 | 21.4 | 25.0 | 28.3 | 27.7 | 26.5 | 22.9 | 19.0 | 17.5 | 20.6 |
1935 | 14.2 | 14.8 | 17.0 | 19.1 | 21.9 | 24.8 | 27.7 | 28.1 | 25.6 | 22.5 | 20.3 | 16.2 | 21.0 |
1936 | 12.4 | 13.5 | 13.6 | 19.3 | 21.7 | 25.3 | 29.0 | 28.6 | 26.9 | 22.8 | 19.6 | 16.9 | 20.8 |
1937 | 15.5 | 16.3 | 17.3 | 20.1 | 22.8 | 24.5 | 28.0 | 27.7 | 26.4 | 23.5 | 20.7 | 16.0 | 21.6 |
1938 | 14.3 | 13.6 | 16.9 | 19.3 | 23.5 | 27.3 | 28.2 | 27.1 | 26.2 | 24.0 | 18.4 | 16.5 | 21.3 |
1939 | 14.0 | 14.5 | 16.6 | 18.8 | 21.5 | 24.7 | 26.9 | 26.7 | 25.1 | 22.9 | 20.0 | 16.0 | 20.6 |
1940 | 13.2 | 14.3 | 16.2 | 17.3 | 20.8 | 24.2 | 28.2 | 27.4 | 26.4 | 23.8 | 20.8 | 16.5 | 20.8 |
1941 | 15.2 | 15.8 | 17.0 | 19.0 | 22.8 | 25.1 | 28.0 | 27.1 | 25.8 | 22.3 | 20.2 | 17.5 | 21.3 |
1942 | 14.1 | 15.2 | 18.8 | 19.5 | 22.2 | 26.3 | 29.3 | 28.3 | 26.4 | 23.1 | 19.1 | 15.5 | 21.5 |
1943 | 13.4 | 13.8 | 16.6 | 18.6 | 23.0 | 25.3 | 26.9 | 27.1 | 25.7 | 22.9 | 19.5 | 16.8 | 20.8 |
1944 | 15.3 | 13.9 | 14.6 | 18.2 | 22.0 | 24.7 | 27.9 | 27.4 | 25.8 | 23.3 | 20.0 | 14.9 | 20.7 |
1945 | 13.3 | 13.1 | 16.2 ) | 18.9 | 21.0 | 25.7 | 27.3 | 26.7 ) | 26.8 | 22.9 | 19.0 | 15.8 | 20.6 |
1946 | 14.6 | 14.7 | 17.2 | 20.6 | 23.0 | 26.0 | 27.4 | 27.2 | 27.3 | 23.0 | 20.0 | 15.8 | 21.4 |
1947 | 15.4 | 12.3 | 15.1 | 18.0 | 21.8 | 24.6 | 27.9 | 28.0 | 27.7 | 22.7 | 19.4 | 15.4 | 20.7 |
1948 | 13.7 | 15.3 | 17.1 | 19.8 | 22.0 | 25.2 | 28.3 | 28.0 | 27.4 | 23.8 | 20.0 | 18.6 | 21.6 |
1949 | 13.8 | 15.7 | 16.7 | 18.4 | 23.0 | 24.4 | 28.0 | 27.4 | 26.8 | 23.9 | 20.2 | 17.4 | 21.3 |
1950 | 15.8 | 15.4 | 16.4 | 19.6 | 21.9 | 24.0 | 27.1 | 27.0 | 25.6 | 23.2 | 20.0 | 15.0 | 20.9 |
1951 | 14.1 | 15.3 | 15.5 | 19.6 | 21.3 | 24.4 | 27.2 | 27.8 | 25.8 | 23.3 | 19.0 | 17.0 | 20.9 |
1952 | 14.8 | 15.3 | 17.4 | 20.0 | 23.1 | 25.7 | 27.5 | 28.0 | 26.5 | 22.9 | 22.1 | 16.2 | 21.6 |
1953 | 13.9 | 15.1 | 17.1 | 18.0 | 21.2 | 27.4 | 29.0 | 28.5 | 26.7 | 23.3 | 20.3 | 18.0 | 21.5 |
1954 | 16.5 | 15.3 | 16.3 | 20.1 | 23.5 | 25.1 | 28.3 | 27.9 | 26.2 | 22.4 | 20.3 | 16.4 | 21.5 |
1955 | 13.1 | 15.1 | 18.7 | 20.6 | 21.9 | 26.1 | 27.8 | 27.2 | 26.9 | 22.9 | 18.8 | 16.5 | 21.3 |
1956 | 14.0 | 13.5 | 17.0 | 19.9 | 23.3 | 27.3 | 29.3 | 27.5 | 26.8 | 23.7 | 19.2 | 14.9 | 21.4 |
1957 | 15.2 | 13.6 | 15.1 | 20.1 | 22.8 | 24.4 | 29.1 | 27.7 | 25.4 | 21.6 | 20.1 | 16.3 | 21.0 |
1958 | 14.4 | 14.6 | 16.6 | 21.0 | 22.6 | 24.5 | 28.0 | 28.6 | 27.5 | 23.2 | 19.6 | 17.4 | 21.5 |
1959 | 13.6 | 17.7 | 17.8 | 19.5 | 22.8 | 24.6 | 28.4 | 28.2 | 27.0 | 22.8 | 20.2 | 17.0 | 21.6 |
1960 | 14.4 | 15.0 | 18.5 | 19.3 | 22.3 | 25.5 | 29.0 | 28.2 | 27.2 | 23.7 | 20.2 | 15.4 | 21.6 |
1961 | 13.6 | 13.4 | 17.3 | 20.0 | 22.9 | 26.8 | 28.4 | 28.4 | 27.7 | 24.7 | 20.6 | 16.2 | 21.7 |
1962 | 12.8 | 14.3 | 15.6 | 18.1 | 22.3 | 25.8 | 28.7 | 28.2 | 27.0 | 23.5 | 19.9 | 15.9 | 21.0 |
1963 | 11.0 | 11.9 | 15.6 | 19.7 | 24.9 | 26.2 | 28.2 | 28.1 | 26.9 | 22.2 | 19.5 | 16.3 | 20.9 |
1964 | 15.5 | 14.0 | 16.5 | 23.6 | 23.0 | 24.7 | 28.6 | 27.5 | 27.0 | 24.3 | 19.9 | 16.1 | 21.7 |
1965 | 13.9 | 14.6 | 14.5 | 18.8 | 21.5 | 24.6 | 28.9 | 27.7 | 25.5 | 21.8 | 21.0 | 15.9 | 20.7 |
1966 | 14.1 | 16.1 | 18.1 | 20.7 | 21.8 | 25.1 | 28.1 | 28.7 | 26.2 | 22.5 | 19.5 | 16.2 | 21.4 |
1967 | 13.2 | 13.7 | 16.4 | 21.0 | 23.1 | 25.3 | 28.6 | 28.0 | 26.1 | 22.6 | 20.4 | 13.6 | 21.0 |
1968 | 13.6 | 11.5 | 15.2 | 18.7 | 21.7 | 24.3 | 27.7 | 27.7 | 26.1 | 22.5 | 18.8 | 17.3 | 20.4 |
1969 | 15.8 | 15.5 | 16.0 | 20.1 | 22.8 | 23.6 | 28.4 | 28.4 | 27.6 | 22.7 | 19.2 | 14.8 | 21.2 |
1970 | 12.5 | 14.7 | 14.3 | 18.4 | 21.9 | 25.7 | 27.9 | 27.9 | 26.9 | 23.9 | 19.2 | 16.1 | 20.8 |
1971 | 12.5 | 14.2 | 15.7 | 19.0 | 21.9 | 27.3 | 28.8 | 27.3 | 26.0 | 22.2 | 19.0 | 16.0 | 20.8 |
1972 | 15.8 | 14.9 | 15.8 | 18.6 | 22.0 | 25.5 | 27.4 | 27.2 | 24.6 | 21.9 | 19.4 | 16.0 | 20.8 |
1973 | 15.4 | 17.0 | 16.7 | 21.3 | 22.1 | 24.6 | 27.2 | 27.6 | 25.7 | 23.2 | 18.6 | 13.9 | 21.1 |
1974 | 13.8 | 14.0 | 15.5 | 19.2 | 22.7 | 24.5 | 27.8 | 27.6 | 25.6 | 23.9 | 19.8 | 17.6 | 21.0 |
1975 | 14.4 | 14.9 | 16.1 | 21.0 | 22.8 | 26.2 | 28.2 | 28.3 | 27.2 | 25.1 | 20.2 | 16.0 | 21.7 |
1976 | 13.6 | 16.7 | 16.9 | 20.9 | 23.3 | 26.5 | 27.0 | 28.4 | 25.7 | 23.1 | 19.4 | 16.7 | 21.5 |
1977 | 14.0 | 13.4 | 18.0 | 21.0 | 23.9 | 26.7 | 29.0 | 28.8 | 27.5 | 24.5 | 21.2 | 17.8 | 22.2 |
1978 | 15.0 | 14.8 | 16.6 | 19.9 | 23.0 | 26.1 | 28.5 | 28.2 | 27.2 | 23.8 | 20.4 | 17.1 | 21.7 |
1979 | 15.8 | 16.2 | 17.4 | 20.5 | 20.9 | 26.2 | 29.5 | 28.8 | 27.2 | 23.6 | 20.3 | 17.4 | 22.0 |
1980 | 15.3 | 13.9 | 18.4 | 20.2 | 22.5 | 27.1 | 28.8 | 27.6 | 26.4 | 23.3 | 19.6 | 14.8 | 21.5 |
1981 | 13.1 | 14.6 | 17.3 | 20.2 | 21.5 | 26.2 | 28.3 | 28.4 | 25.9 | 22.9 | 19.2 | 15.6 | 21.1 |
1982 | 13.6 | 15.0 | 17.8 | 19.1 | 23.1 | 24.2 | 28.0 | 27.5 | 25.7 | 23.3 | 20.6 | 15.8 | 21.1 |
1983 | 14.9 | 14.5 | 17.1 | 21.6 | 23.4 | 25.0 | 28.4 | 28.6 | 27.6 | 25.0 | 19.3 | 15.1 | 21.7 |
1984 | 13.0 | 13.5 | 15.1 | 19.5 | 22.4 | 26.5 | 28.6 | 28.2 | 26.5 | 23.0 | 21.0 | 16.4 | 21.1 |
1985 | 13.8 | 15.9 | 18.0 | 19.4 | 23.3 | 25.3 | 28.3 | 27.9 | 27.3 | 24.3 | 19.0 | 15.8 | 21.5 |
1986 | 13.4 | 12.8 | 16.1 | 19.8 | 22.6 | 25.8 | 28.6 | 28.2 | 27.0 | 21.8 | 20.0 | 17.0 | 21.1 |
1987 | 14.2 | 14.8 | 18.0 | 20.1 | 22.6 | 25.2 | 29.1 | 29.0 | 25.8 | 24.3 | 21.2 | 16.3 | 21.7 |
1988 | 16.2 | 15.5 | 17.4 | 19.5 | 23.0 | 26.2 | 29.3 | 28.0 | 27.2 | 23.6 | 18.3 | 15.7 | 21.7 |
1989 | 16.5 | 16.3 | 16.4 | 19.8 | 22.8 | 25.5 | 28.0 | 27.8 | 27.1 | 23.1 | 19.8 | 15.9 | 21.6 |
1990 | 14.4 | 16.8 | 17.3 | 18.8 | 21.8 | 26.2 | 28.9 | 28.6 | 26.8 | 23.1 | 20.2 ) | 16.6 | 21.6 |
1991 | 15.2 | 14.3 | 18.6 | 20.9 | 22.9 | 28.3 | 29.6 | 28.0 | 27.3 | 22.9 | 19.4 | 17.1 | 22.0 |
1992 | 15.3 | 14.0 | 18.8 | 19.7 | 21.9 | 24.6 | 27.8 | 28.0 | 26.4 | 22.9 | 19.5 | 17.0 | 21.3 |
1993 | 15.3 | 15.0 | 16.3 | 18.6 | 22.2 | 26.4 | 28.6 | 28.0 | 26.1 | 22.7 | 21.0 | 16.6 | 21.4 |
1994 | 14.9 | 15.0 | 15.3 | 20.8 | 22.6 | 26.4 | 29.1 | 28.5 | 25.8 | 23.5 | 21.0 | 17.9 | 21.7 |
1995 | 14.4 | 14.1 | 15.8 | 20.2 | 22.2 | 25.5 | 28.6 | 28.7 | 26.6 | 24.4 | 18.4 | 15.1 | 21.2 |
1996 | 14.7 | 13.8 | 16.9 | 17.4 | 21.6 | 26.8 | 28.8 | 27.7 | 26.6 | 23.0 | 20.8 | 15.8 | 21.2 |
1997 | 14.1 | 15.0 | 17.5 | 20.1 | 23.3 | 25.1 | 28.0 | 28.2 | 25.6 | 22.0 | 20.5 | 17.4 | 21.4 |
1998 | 15.7 | 16.6 | 17.5 | 22.2 | 24.9 | 26.7 | 28.4 | 29.2 | 27.5 | 24.7 | 20.6 | 17.7 | 22.6 |
1999 | 15.4 | 14.9 | 18.7 | 19.9 | 21.8 | 26.8 | 27.8 | 27.9 | 27.4 | 24.5 | 20.4 | 15.8 | 21.8 |
2000 | 15.7 | 14.2 | 16.6 | 19.3 | 22.5 | 26.2 | 27.9 | 27.8 | 26.1 | 24.6 | 21.7 | 17.3 | 21.7 |
2001 | 15.4 | 16.4 | 16.2 | 19.7 | 22.4 | 26.8 | 29.3 | 28.7 | 27.3 | 24.2 | 19.7 | 16.7 | 21.9 |
2002 | 15.5 | 15.1 | 17.8 | 20.6 | 23.6 | 26.2 | 28.5 | 28.5 | 26.2 | 22.7 | 18.9 | 17.3 | 21.7 |
2003 | 13.8 | 16.0 | 16.6 | 20.9 | 23.1 | 26.4 | 29.7 | 28.8 | 27.6 | 23.5 | 22.2 | 16.5 | 22.1 |
2004 | 14.6 | 15.3 | 17.1 | 20.2 | 23.9 | 25.6 | 28.4 | 28.8 | 27.0 | 24.0 | 20.6 | 17.9 | 22.0 |
2005 | 14.3 | 15.4 | 15.4 | 19.3 | 22.6 | 25.6 | 29.3 | 28.4 | 27.3 | 24.7 | 20.4 | 14.7 | 21.5 |
2006 | 15.6 | 15.9 | 16.6 | 19.7 | 23.5 | 26.1 | 29.8 | 29.1 | 26.8 | 24.4 | 21.1 | 17.4 | 22.2 |
2007 | 15.2 | 16.0 | 17.5 | 18.8 | 22.1 | 26.1 | 29.6 | 28.6 | 27.6 | 25.2 | 20.3 | 17.4 | 22.0 |
2008 | 16.1 | 13.6 | 16.7 | 19.6 | 22.8 | 26.5 | 28.9 | 28.2 | 27.4 | 24.5 | 20.4 | 16.3 | 21.8 |
2009 | 14.4 | 17.8 | 17.3 | 19.1 | 22.4 | 24.7 | 28.9 | 29.1 | 27.4 | 23.6 | 20.1 | 16.3 | 21.8 |
2010 | 14.8 | 16.6 | 18.0 | 19.5 | 22.6 | 25.7 | 28.4 | 28.6 | 27.4 | 24.1 | 19.3 | 15.9 | 21.7 |
2011 | 12.4 | 15.4 | 15.2 | 18.5 | 22.4 | 27.3 | 28.6 | 28.5 | 27.0 | 23.7 | 21.9 | 16.0 | 21.4 |
2012 | 14.5 | 15.1 | 17.4 | 19.7 | 22.3 | 25.9 | 28.9 | 28.4 | 26.1 | 23.0 | 19.3 | 16.2 | 21.4 |
2013 | 14.2 ) | 16.1 | 18.6 | 19.0 | 22.2 | 26.8 | 29.2 | 29.4 | 27.6 | 24.4 | 19.3 | 15.2 | 21.8 |
2014 | 14.5 | 15.8 | 16.7 | 19.1 | 22.1 | 24.8 | 28.9 | 28.4 | 27.4 | 23.9 | 20.8 | 15.7 | 21.5 |
2015 | 15.2 | 14.6 | 17.0 | 21.0 | 23.5 | 27.4 | 28.4 | 28.3 | 26.5 | 23.5 | 21.5 | 17.8 | 22.1 |
2016 | 15.4 | 14.6 | 16.9 | 21.4 | 24.0 | 27.3 | 29.5 | 29.0 | 27.8 | 26.1 | 20.9 | 17.7 | 22.6 |
2017 | 15.4 | 14.7 | 16.4 | 20.3 | 22.2 | 25.4 | 29.2 | 29.6 | 27.5 | 25.4 | 20.3 | 15.6 | 21.8 |
2018 | 14.6 | 14.1 | 17.9 | 20.1 | 23.9 | 26.1 | 28.1 | 28.3 | 27.4 | 22.8 ) | 20.0 ) | 18.0 | 21.8 |
2019 | 15.8 | 17.2 | 17.9 | 20.1 | 22.5 | 25.3 | 28.4 | 28.7 | 27.7 | 24.5 | 20.6 | 17.6 | 22.2 |
2020 | 16.5 | 16.3 | 17.8 | 17.8 | 23.2 | 27.1 | 28.4 | 28.9 | 26.5 | 23.6 | 21.4 | 16.6 | 22.0 |
2021 | 14.4 | 16.1 | 18.8 | 20.0 | 23.5 | 25.6 | 28.1 | 28.2 | 27.5 | 24.3 | 19.3 | 16.2 | 21.8 |
2022 | 15.3 | 14.2 | 18.1 | 20.6 | 22.0 | 26.3 | 28.9 | 29.3 | 27.7 | 24.3 | 21.9 | 16.1 | 22.1 |
2023 | 15.1 | 16.4 | 18.0 | 20.8 | 22.8 | 26.0 | 29.2 | 27.8 | 27.6 | 23.8 | 20.3 | 17.3 | 22.1 |
2024 | 15.6 | 18.2 | 17.6 | 22.3 | 23.5 | 26.4 | 29.9 | 29.5 | 28.1 | 26.0 | 22.4 ) | 16.1 | 23.0 |
2025 | 14.5 ] | × |
Remarks
The red lines, if any, indicate data inhomogeneity caused by changes in instrumentation, observation methods and/or site location.