1901,3.7,3.4,3.8,6.7,8.2,10.5,12,10.5,10.3,8.6,7.5,1.7
1902,3.5,3.4,4,9,10.8,12.5,11.5,11.8,10.2,7.1,6.8,3.4
1903,2.3,3.8,3.6,7,8.5,10.4,11.5,11.2,8.9,5.5,4.1,1.9
1904,1.1,3.7,5.8,8.5,8.7,11.9,10.8,10.7,9.5,6.6,4.5,2.9
1905,2.1,0.8,4.7,7.2,9.9,11.6,11.7,12.6,9.7,6.7,4.6,0.1
1906,1.6,2,3.2,7.3,8.8,12.3,11.3,10.5,10.5,5.9,3.9,3.9
1907,4,4.9,5.7,8.2,7.7,12.8,13.1,13.1,10.5,6.9,3,2.8
1908,3,2.3,4.3,6.3,8.3,11.7,10.8,11.5,9.1,5.1,3.7,1.2
1909,3.2,2.9,6.1,7.8,11,10.5,9.9,10.5,8.2,4.6,4.8,-1.6
1910,2.3,0.6,2.6,5,10.2,12.6,10.5,10,8.4,3.4,2.7,0.3
1911,2.7,2.4,2.8,6.1,7.1,11.2,10.1,10.9,10.6,5,2.5,1.1
1912,2,0.8,1.4,7.1,9.1,9,10.3,11.4,9,5.8,1.9,1.4
1913,2.2,1.9,2.3,4.8,7.5,9.3,10.3,11.3,8.1,5.3,4.4,1.7
1914,3.8,2.8,2.4,5.5,7.8,9.5,9.8,10.2,8.8,6.6,3.7,0.3
1915,1.8,3.3,1,6.4,9.7,12.2,11.7,12,9.7,6,3.2,2.4
1916,5.6,4.6,5.1,7.1,8.4,11.6,9.7,9.8,8.5,5.3,2.4,2.7
1917,3.8,4.7,3.2,6.8,7.7,10.9,10.7,12.1,9.4,4.8,3.6,2.2
1918,1.7,4.1,4.3,7,9.2,11,11.2,11.4,9.2,7.2,3.1,2.1
1919,0.9,3.3,3.3,6,8.6,10.3,9.7,11.7,10,8,4.6,2.2
1920,2.2,4.4,2.7,6.9,8.8,9.9,11.5,11.4,11.1,6.9,3.7,2.2
1921,4.2,2.4,5.5,6.3,8,11.9,11,12.3,11.5,6.6,5.1,3.4
1922,4.2,6.2,3.7,8.7,9.3,10.5,10.4,10.7,9.3,5.8,3.3,2.6
1923,5,2.7,1.8,7.3,9,11.3,11,11.2,11.7,6,4.3,2.7
1924,1.9,2.8,3.2,5.3,7,9.9,10.2,11.9,9.1,5.7,4.3,-0.4
1925,2.4,4.4,4.9,8.8,8.6,10.6,11.1,12,9.3,5.9,3.7,0.6
1926,1.4,4.2,3.5,6.7,8.6,11.7,12,12.4,11.4,8.9,2.3,1.5
1927,3.7,6,4.9,8.5,9.5,10.5,10.2,11.7,10.1,7.7,6.6,2.1
1928,2.2,5.4,5.2,8.5,9.9,13.3,11.4,12.5,9.3,8,4.6,2
1929,3.4,3.7,3.8,8.8,9.5,12.2,12.2,11.6,10.7,6,4.7,2.8
1930,4.4,4.5,3.6,7.6,10.3,11.5,11.4,12,11.9,9.1,5.1,2.2
1931,3.6,3.8,2.8,5.6,8.6,11.4,11.3,11.2,11.1,8.1,7.3,3.5
1932,4,6.6,3.1,6.5,8.6,12.1,12,13,10.4,7.1,2.7,3.5
1933,4.6,4.8,4.5,7.7,9.8,10.9,12,11,9.4,6.6,3.6,1.9
1934,-0.1,2.3,2.4,5.8,7.9,9.9,10.7,11.1,10.2,7,5.3,3.7
1935,2.7,1.5,5.8,8.5,9,10.5,10.5,11.8,10.3,8.2,4.8,2
1936,2.6,4.3,5.1,6.5,8.7,12.9,12.5,12.8,12.1,6.3,3.6,3.3
1937,5.2,3.2,3.9,8,9.7,13.4,12.6,13.9,10.8,7.4,3.8,2.3
1938,4.2,5.4,7.8,7.9,12,12.6,13.2,12.7,10.9,7.2,4.7,1.1
1939,3.1,3.2,5.6,7.9,10.2,13,12.7,10.5,9.4,7,3.3,1.2
1940,-0.7,2.6,4.9,7.5,8.5,10.6,10.8,10.5,8.6,6.1,5.5,4.2
1941,4.2,4.8,3.3,8.4,9.2,12.7,12,12,11.5,8.8,5.8,5
1942,3.4,6.5,4.5,8.1,10.7,12.8,11.3,11.3,10.6,7.3,5.3,1.8
1943,2.6,4,2.5,7.4,10.2,13.5,12.4,12.9,11.4,6.7,3.2,3.6
1944,2.8,7.3,3.6,7.3,8.7,11.6,12.3,11.6,10.4,4.5,5.5,1.4
1945,4.6,4.7,6,6.2,8.6,12,11.5,11.5,10.2,5.6,5.5,1.1
1946,2.1,5.2,4.1,7.8,10.3,12.9,12.2,12.2,11.7,7.7,5.4,2.1
1947,2.4,2.3,3.2,6.5,10,12.5,12.1,11.3,9.9,7.8,6.2,1.7
1948,2.6,6.9,5.4,8.3,10.2,12.5,11.9,11.9,9.7,6.5,5.3,4.2
1949,5.6,6.3,5.7,5.3,10.5,13,12.9,12.8,12.2,8.3,4.4,4.3
1950,7.2,5.9,5.2,8.6,10.6,13.5,13.4,13.1,12.3,5.7,4.3,1.1
1951,2.8,3.3,3.8,7.5,9,12.2,13.1,12.8,10.6,7.4,6.2,4.3
1952,5,3.7,5.7,7.5,9.4,11.7,11.3,13,10.4,4.5,5.1,2.4
1953,3.6,4.7,7.3,7.7,9.8,13.1,12.4,13.2,9.9,7.8,3.8,0.4
1954,4.4,5.8,5.5,9.1,9.1,12.2,11.6,12.1,10.4,7.5,4.1,2.1
1955,3.2,3.3,6,8.4,10,11.7,10.7,11.5,10.3,6,4.8,1.1
1956,2,4.3,4.9,7.4,9.4,10.8,10.9,11,8.3,6.8,3.9,2.6
1957,4.5,5.2,3.2,6.5,7.9,11.7,12.1,12.1,10,6.6,5.2,2.3
1958,1,2.9,3.3,8.1,8.8,12.2,12.3,12,11.1,7.8,6.2,3.8
1959,3.5,5.8,3.6,6.4,8.8,11.8,11.4,11.2,10,7.5,3.5,1.8
1960,3.2,0.3,3.9,6.3,8.4,11.8,11.7,12,8.8,7.7,5.5,1.9
1961,1.4,2.3,4.1,6.5,9.3,10.2,9.8,10.1,9.5,5.4,4.3,3
1962,1.3,5.5,5.9,6,9,9.4,10.7,11.1,9.1,6,4.4,0.8
1963,4.2,1.8,3.7,10,9.5,9.8,10.2,11.7,8,3.4,2.1,0.6
1964,2.7,2.4,3.8,9.5,9.6,8.3,12,11.6,11.5,6.1,6,3.4
1965,3,2.8,5.1,8.8,10.2,12.1,11.7,11,11.7,5.8,6.6,4.4
1966,2.2,3.3,4.1,7.5,8.6,10.7,11.7,12.1,10.8,6.6,4.6,0.3
1967,1.7,3.5,6.4,9,9.1,12.9,12.4,10.8,10.4,5.4,5.7,4.4
1968,3.4,3.3,3.2,8.8,10.1,12.7,12.1,10.7,11,8.5,6,5.3
1969,3.9,5.4,3.5,7.7,8,11.8,11.8,11.3,9.8,7.1,4.6,2.1
1970,1.1,3.4,5.1,8.2,6.6,10.7,11.1,11.1,9.9,5.6,4.7,4.5
1971,4,3.3,5.5,5.9,9.4,10.8,10.5,10.4,9.2,8,3.4,3.3
1972,5.2,4,4.3,8.1,8.5,10.4,9.5,10.2,9.5,7.5,4.6,4
1973,3,3.3,6.5,7.2,8.9,10.7,10.5,10.4,11.4,7.7,6,2.9
1974,2.7,3.9,5.3,7.1,9.6,10,10.1,11,10.5,6.1,5.4,3.4
1975,3.7,4,7.2,8.9,8.6,12,10.1,10.5,7.9,5.8,4.2,1
1976,0.8,4.6,5.3,7.1,7,10.6,10.3,9.9,10.2,6.1,4,3.3
1977,3.2,2.2,3.8,5.4,9.4,10.1,10.1,11.6,9.6,6.9,4,1.9
1978,1.7,1.5,3.2,7.6,8.4,10.3,10.5,10.9,8.5,4.7,5.7,2.3
1979,2.5,3.3,3.7,7.8,7.6,9.7,11.9,11.6,9.9,6.7,1.7,0.9
1980,2.7,3.5,5.4,6.6,10.6,12.4,12.8,12.6,11.1,5.9,2.3,2
1981,1.7,3.8,3.3,7.6,8.6,11.1,11.2,11,9,6.7,4.8,1.8
1982,3.3,3.7,5.6,8.9,9,13.1,12.2,11.1,10.1,6.2,4,1.3
1983,3,1.7,2.4,5.4,9,11.6,9.9,11.3,9.4,6.3,4.3,1
1984,1.8,2.2,4.5,7.3,6.8,11.3,10.1,10.4,9.2,7,4,3.2
1985,1.1,3.6,4.9,7.2,9.4,10.9,10.9,11.5,10.3,7.3,5.5,1.8
1986,2.5,4.2,3,9.1,9.9,11.2,11.6,11.6,10.2,6.5,5.4,2.6
1987,2.3,3.1,2.7,5.7,7.8,12,11.9,11.3,11.2,6.3,3.9,4.2
1988,1.8,2.8,3.5,7.6,8.3,11.8,11.8,11.8,10.2,6.5,5.5,2.7
1989,4.4,3.7,3.7,7,8.9,12.1,11.9,12.6,9.4,6.5,6,1.6
1990,5.2,4.5,4.9,8.3,11,12.9,11.3,11.8,9.3,7.5,5,2.1
1991,3.9,4.8,5.9,7.8,9.1,12.2,12.4,11.8,9.9,7.2,3.9,3.5
1992,3.5,2.5,6,7,8.7,11.7,11.9,11.2,10.5,7.6,4.9,3.8
1993,4.1,4.8,4.5,7.7,8,12.2,12,11.1,11.7,6.8,3.6,3.4
1994,3.1,3.6,4.3,6.4,9,12,12.7,11.1,10,8.1,7.3,5
1995,3.3,4.8,4.5,6.7,8.9,12.2,11.1,10.4,9.4,6,6.4,3
1996,0.7,3.3,1.1,4.9,9.2,10.6,9.6,9.9,9.8,5.9,5.1,0.2
1997,0.8,3.1,5.4,5.9,7.1,11.5,11.1,8.7,9.3,6.3,3.9,1.2
1998,2.8,2.4,4.2,6.6,9.4,11.6,11.5,12.2,11.3,6.4,6.4,2.8
1999,2.4,4.5,4.3,9,7.7,11.2,10.8,10.9,9.7,5.5,3.9,0.1
2000,2.5,5.2,5.1,8.1,10.6,10.8,12.1,10.1,10.3,6.4,3.6,0.3
2001,3.6,3.4,2.6,7.7,8.3,9.9,11.3,11.8,9.7,6.1,3.7,2
2002,4,2.2,4.7,8.8,9.4,11.5,10.2,10.5,8.9,7,3.9,2.9
2003,3,3.6,4.3,8.1,10.8,12,9.3,10.9,10,6,6,0.8
2004,1.4,2.7,4.6,6.6,7.6,10.7,10.7,10.9,7.4,7.1,3.5,-0.6
2005,2.8,3.8,2.6,6.7,7.4,11.3,10.5,9.1,8.8,6.3,3.1,1.3
2006,1.3,3.9,4.8,8.8,7,10.3,9.5,11.8,8.1,5.1,2.9,0.2
2007,2.8,3.4,4.3,6.3,7.2,10.2,9.3,10.9,8.8,7.2,2.6,3.1
2008,2.6,3,2.8,7.6,7.7,12.5,9.2,10.5,7.8,4.1,1.4,2.2
2009,2.6,2.8,4.3,6.5,7.1,12.1,11,12.7,10,6,3.7,2.7
