1901,2.9,1.4,3.1,6.9,9.7,12.3,15.8,14.5,12.8,8.4,5.1,2.5
1902,3.1,0.8,5.1,6.4,7.2,10.6,12.5,12.2,11.5,8,6.7,3.6
1903,2.9,5.4,5.3,4.6,8.9,11.3,13.3,12.8,11.5,8.8,5.1,2.6
1904,3.5,2.2,3.3,7.4,8.9,11.6,14.1,13.8,11.5,8.6,4.9,3.8
1905,3.6,3.6,5.3,5.3,9.4,12.5,15,13.4,11.4,6.5,4.5,5.1
1906,4.1,2.4,3.7,6.5,8.4,12.7,13.7,14.4,12.7,9.3,7.1,2.7
1907,3.2,2.4,5.7,6.6,8.3,11.1,12.4,12.6,12.2,8.9,5.8,3.8
1908,2.5,4.3,3.3,5,10.3,12.4,14,13.2,11.9,11.2,6.3,3.4
1909,3.2,3,2,7.1,9.2,10.8,13.2,13.9,10.7,8.8,4.1,2.4
1910,2.4,3.5,5.5,5.9,8.9,12.3,12.7,13.9,11.8,9.6,2.7,5.2
1911,3.9,4,3.9,6.5,10.7,12.8,15.2,15.6,12.4,7.7,5,5
1912,2.6,3.7,6.1,7.8,9.8,11.8,13.9,11.7,10.1,8,5.4,5.1
1913,2.8,4,4.6,6.7,9.5,12.4,13.2,14,12.1,9.8,7.3,4.2
1914,3.1,5.6,4.6,9,9.5,12.7,14.4,14.6,12.3,9.5,6,3.6
1915,3.2,3.1,4.3,6.8,8.1,12.3,13.5,13.9,12,8,2.8,3.3
1916,6.1,2.8,2.2,6.9,9.2,10.4,13.5,13.9,11.7,8.7,6.6,3
1917,1.6,1.6,2.4,4.2,9.3,13.1,14.4,14.1,12.7,6.6,7.1,2.6
1918,2.3,5.3,4.8,5.5,10.9,12.1,13.8,14.3,9.9,8.7,5,5.2
1919,2.8,1.2,2.1,6.5,10.5,12.5,12.6,14,11.8,7.6,2.1,3.5
1920,3.5,5.2,5.8,6.3,10,12.4,13.1,12.7,11.9,9,6.7,3.5
1921,5.4,4.7,5.8,7.2,10.4,12.7,15.2,13.1,12.6,11.3,4.2,5.4
1922,2.3,3,3.9,4.7,10.4,12,12.4,12.4,10.8,7.5,5.9,4.9
1923,5.3,3.5,5.3,5.6,7.5,11.1,15,13.4,11.2,8.5,3.2,2.8
1924,3.4,3,2.9,5.8,8.7,12,13.8,13.2,11.5,8.7,6.4,6.3
1925,4.5,3.6,4.2,6,9.8,13,15.1,14.2,10.4,9.1,3.5,1.8
1926,4,4.8,5.4,7.9,8.4,12.1,15.1,14.8,12.7,6.5,5.1,4.4
1927,3.9,4.1,6.1,6.4,8.3,10.4,14.3,14.4,11,9.2,5.1,1.3
1928,4,4.3,4.1,6.8,8.5,10.6,13.9,13.8,11.6,8.8,6.8,3.4
1929,1.6,0.2,5.6,5.1,9.6,11.7,14.3,13.7,13.2,8.4,5.8,4.6
1930,4,1.7,4.2,6.7,8.9,13.6,14,14.3,12.3,8.9,5,3.4
1931,2.3,2.3,2.1,6.1,9.6,11.6,13.8,12.5,10.4,8,7.2,4.9
1932,5.1,3.6,3.8,5.2,8.8,12.1,14.4,14.8,11.4,7.1,5.2,4.9
1933,1.5,2.7,5.8,7.5,9.9,13.5,16.2,15.5,13,9,5.3,2.5
1934,3.9,4.8,3.7,6.1,9.6,12.6,15.7,14.1,12.7,8.8,5.2,6.7
1935,3.9,3.8,5.7,6,8.2,12.4,14.7,14.8,11.6,7.8,5.6,1.9
1936,2.3,1.7,4.9,5.2,9.5,12.9,14.3,14.7,12.8,8.2,4.6,4.1
1937,3.9,3.1,1.8,7.2,10.3,12.6,14.1,14.4,11.8,9.3,5.1,2
1938,4.4,4,7.9,6.9,8.8,12.3,13.4,14.1,12.5,9.1,7.2,3.2
1939,2.6,4.6,4.7,6.8,9.9,13,13.9,14.9,12.5,7.3,6.5,3.1
1940,-1,1.5,4,6.3,10.7,14,13.3,13.7,10.9,8.7,5.8,3.2
1941,-0.4,1.5,2.9,5.1,7.9,12.6,14.7,13.1,13.1,8.7,5.7,4.8
1942,0.4,-0.4,3,7,9.2,11.9,13.7,14.6,11.9,8.9,5,5.2
1943,3.2,5.4,5.9,8.7,9.7,12.5,13.8,13.3,11.6,9.6,5.2,3.5
1944,4.5,2.7,4.1,8.2,9.3,11.7,14,14.8,10.8,8,4.5,3.4
1945,-0.3,5.4,6.8,7.7,9.7,12.6,15,14.1,12.7,10.4,7,4.4
1946,2,3.9,4.2,8.2,9.1,11.7,14.3,13.1,12.3,8.5,6.7,2.6
1947,2,-1.5,1,6.6,10.3,13.1,15.1,16.6,12.7,9.8,5.5,4.5
1948,2.9,3.8,6.7,7.4,9.2,12,13.9,13,12.1,8.6,6.5,4.5
1949,4.2,4.6,4.1,8.3,9.4,12.4,14.4,14.6,14.2,10.1,5.8,4.4
1950,3.5,2.9,6.2,5.6,9.7,13.7,14.1,14,11.2,8.6,4.4,0.7
1951,2,2.4,2.8,5,7.8,11.3,14.5,13.4,12.2,9.3,7.3,4.2
1952,1,2.8,5.1,7.8,11,12.1,14.4,14.3,9.6,7.8,3.2,2.2
1953,3.7,4,5.3,5.7,10.7,12.4,13.8,14.2,12.8,9.2,7.2,5.6
1954,2.7,1.5,4,6.5,9.7,11.8,12.8,13,10.6,9.8,5.7,5.1
1955,1.3,-0.9,2.4,8.1,7.9,11.7,15.3,15.6,13,8.3,7,3.6
1956,1.7,-0.1,4.6,5.1,10.7,11.4,13.7,11.6,12.4,8.6,6,5.1
1957,4.4,3.2,7.3,7.2,9,12.9,13.9,13.5,10.7,9.4,6,3.8
1958,1.7,2.4,1.4,6.3,8.9,11.8,14,14.1,13.5,9.8,5.5,3.5
1959,0.4,3.5,5.7,7.9,10.4,13.2,15.3,15.8,13,11.2,6.3,4.7
1960,2.8,2.2,4.6,7.9,11.1,14.2,13.4,13.2,11.7,9.3,5.9,2.7
1961,2.2,5.3,7.5,7.7,9.1,12.8,13,13.4,13.1,9.5,4.8,1.2
1962,3.1,3.7,1.5,6,8.7,12.4,12.1,12.6,11.2,9.5,4.5,1.8
1963,-1.2,-1.1,4.5,6.9,8.7,12.7,13,12.5,11.5,9.5,6.2,2.8
1964,3.3,3.8,3.3,7.6,11.2,12.1,14.2,13.7,11.9,8.1,6.1,2.3
1965,2,3.4,3.6,6.6,9.4,12.6,11.3,12.9,11.5,9.8,3.4,2.3
1966,2.2,3,5.5,5,9.4,13.6,13,12.7,12.9,8.7,4.6,3.4
1967,3.4,4.6,5.9,6.7,8.5,12.4,14.8,14.1,12.3,9,5.1,3.5
1968,2.7,1,5.4,6.4,7.6,12.8,12.6,13.3,12.1,10.4,5.8,3.2
1969,4.5,-0.5,2,5.8,8.9,12.3,15.3,14.8,12.1,11.6,3.4,2.8
1970,2.6,1.3,2.8,5.2,10.6,13.4,13,14.4,12.6,9.1,5.9,3.7
1971,3.7,4.2,4.4,6.4,9.8,10.4,14.3,13.6,12.9,10.1,5.2,6.1
1972,3.2,3.4,5,7.3,9.3,11,13.5,13.3,10.3,9.7,5.2,4.4
1973,3.8,3.3,5.7,5.6,9.4,13.6,14,14.3,12.2,8.3,4.6,3.6
1974,4.7,4.6,4.3,6.4,9.6,11.9,13.2,13.9,10.5,7.1,5.6,6.2
1975,4.8,3.4,3.6,6.8,8.3,12.6,15.1,16.8,11.6,9.3,5.6,5.1
1976,4.2,4.4,3.9,7.3,10.1,14.8,16.2,15.3,11.9,9.5,4.9,1.2
1977,1.9,2.7,5.3,6,8.8,11,14,13.6,11.5,10.6,5,5.2
1978,2,0.5,5.5,5.2,9.9,12.3,12.7,13.6,12.3,10.6,7.2,3.3
1979,-0.4,0.6,3.1,6.3,8.6,12.7,14.2,13.1,11.9,10.1,5.5,4.2
1980,2,4,3.3,7.5,9.1,12.7,12.9,14.2,13.1,7.8,5.8,4.7
1981,3,2.6,5.7,6.2,10.1,12,14,14.7,13.1,6.5,6.3,-0.1
1982,1,4,5.2,7.5,9.7,12.7,14.8,14.4,12.3,9.1,6.2,3.1
1983,5.1,1.2,5.8,5.2,8.4,11.9,16.4,15.8,11.9,9.2,6.5,5.2
1984,1.1,2.8,3.7,6.9,8.6,12.9,15.1,15.3,11.4,9.3,7,4.8
1985,0.9,2.3,3.7,6.9,9.3,11,14.2,13.3,12.2,9.8,2.8,4.5
1986,2.2,-1.1,4,4.8,10.2,12.7,14.3,12,10.9,9.4,6.5,4.3
1987,0.9,2.7,3.2,8.7,8.7,10.7,14.1,13.9,11.8,8,5.5,4.9
1988,3.6,3.8,4.5,6.9,10,13,13.7,14.1,12.1,9.1,5.3,6.7
1989,6.1,4.7,5.8,5.4,10.9,12.7,15.7,14.7,12.6,10.1,6,3.4
1990,5.1,5.6,7.5,7.2,10.6,12.1,14.5,16.1,11.7,10.1,6,4.1
1991,2.3,1.8,6.3,6.8,9.9,10.8,15.6,15.8,12.6,9.2,5.9,4
1992,3.5,4.8,6,7.4,11.4,14,14.3,13.5,11.7,6.6,6,2.9
1993,4.3,5.1,5.6,7.7,9.4,12.5,13.5,13,11,7.5,4.3,3.2
1994,3.8,2.1,5.8,6.9,8.8,13.4,15.8,14.3,11.6,8.7,8.7,5.2
1995,3.2,4.7,4.2,7.2,9.8,12.3,16.1,16.6,12.4,11.6,7.1,1.6
1996,4,2.5,3.4,7.3,7.9,13,14.5,15.2,12.6,10.3,4.7,2.7
1997,2.7,5.4,7.4,7.9,9.5,12,15,16.8,12.5,9.3,7.8,5.3
1998,4.3,6.9,6.6,6.4,11,12.3,13.8,14.3,13,8.8,5.1,4.5
1999,4.4,3.7,6.2,8.3,10.8,12.3,15.3,14.2,14.2,9.9,7.1,3.3
2000,4.7,4.8,6.4,6.4,10.1,12.3,13.1,14.8,12.9,9.3,6,4.6
2001,2.9,3,3.4,6.5,11,12.2,15,15.1,11.9,12.3,6.9,3.5
2002,4.7,5.1,6,7.9,10.8,13.2,14.2,15.5,13,8.4,7.5,5.3
2003,4.1,3.3,6.4,8.4,10.9,14.7,16.1,16.3,13.1,8.4,7.5,4.2
2004,4.3,4.4,5.6,8.6,11.1,13.9,14.1,15.8,13.3,9.6,7.2,5.2
2005,5.5,3.9,6.1,7.6,9.7,13.6,14.8,14.7,13.6,11.2,5.7,4.8
2006,4.3,3.7,3.3,7.2,10,14.1,17.2,14.9,15,11.7,7.6,4.9
2007,5.8,5,6.4,9.7,10.1,12.6,14.1,14.3,12.6,10.4,7,4.2
2008,4.9,5.3,4.7,6.7,11.2,12.8,15.1,15.1,12.6,8.8,6.2,3.8
2009,3.2,3.8,6.4,8.6,10.6,12.9,15.2,15.5,13.3,10.3,7.3,2.3
