1901,3.8,1.6,3.2,6.1,8.8,10.5,13.4,12,11.3,8,4.5,2.6
1902,3.1,2.3,4.3,5.3,6.4,9.6,10,9.9,9.6,8.1,6.7,4.2
1903,3.6,4.5,4.5,4.4,7.5,9.4,10.6,10.9,10.3,7.4,4.8,3.8
1904,4.3,2.1,3.4,5.6,7.7,10.3,11.7,11.7,11.2,7.8,4.8,4.1
1905,3.9,3.4,4.8,3.7,7.5,10.8,12.3,11.9,10.1,5.4,4.7,5.2
1906,3.9,2.3,2.5,5.2,6.7,10.5,10.8,11.7,11.1,8,6.6,2.9
1907,3.8,2.9,4.1,5,7.2,9.3,10.3,9.8,9.3,8,5.4,3.9
1908,3.9,3,3.4,4.4,7.7,9.8,11.8,11.5,10.3,9.8,5.7,4.6
1909,3.5,3.1,2.3,5.5,6.9,9.2,11,11.1,9.6,7.1,3.9,2.2
1910,2.7,3.2,4.7,5.1,8.5,10.9,11.9,13.2,10.4,8.4,3,4.4
1911,4,3.8,3.9,5.3,9.2,10.7,12.4,13.1,10.9,6.8,4.6,5.6
1912,3.2,3.6,4.9,5.6,7.6,9.9,11.9,11,9.7,7.6,4.3,4.3
1913,3.8,3.8,3.7,5.5,8.3,10.4,11.6,11.9,11,8.8,7,3.7
1914,4.2,5.2,3.8,7,7.1,10.6,12.7,12.8,10.5,8.6,5.3,3.3
1915,3.6,3.2,2.7,5.2,6.4,9.5,11.4,12,10.4,8.2,3.5,1.2
1916,4.9,3,1.9,5.6,7.4,8.8,11.3,11.2,10.3,7.9,6.7,3.7
1917,2.7,3.2,2.2,3.3,7.8,11.2,12,13.9,10.8,6.2,5.2,2
1918,1.3,4.2,4.3,4.9,9.4,9.9,11.8,12.9,8.5,7.9,5.5,4.6
1919,4.2,1.5,1.8,4.9,9.2,10.6,11.1,11.4,10.3,6.7,2.6,3.4
1920,2.9,4.1,5,5.2,8.1,10.4,11.7,10.9,9.8,9.4,7.4,5.1
1921,4.3,5,4.3,6.4,7.6,9.5,10.9,10.4,10.1,8.7,5,4.4
1922,2.7,3.4,3.7,3.6,7.6,9.6,10.7,10.9,9.5,6.8,5.1,4.7
1923,4.1,3.3,4.9,4.7,6.1,8.4,12,11.5,9.6,7.5,3.8,2.8
1924,4.3,3.2,2.3,4.5,7.2,9.1,11.7,12.8,10.9,8.4,7.3,6.7
1925,5.5,3.4,3,5.2,8.5,10.4,13.3,11.9,9.5,7,4.1,1.8
1926,4.7,4.4,4.7,7.4,7.2,11.1,13.2,13,10.6,5.1,6,4.1
1927,3.3,4.2,5.6,4,6.1,8.2,12.7,12.7,9.9,7.1,4.4,2.2
1928,3.6,4,4.3,5.4,7.4,8.6,10.9,11,9.9,8,5.7,4
1929,3.7,2.2,6,4.8,8.3,9.4,11.8,11.6,10.8,6.9,5.8,4.8
1930,4.3,3.1,2.6,6.3,7.7,11.3,12.6,13.2,11.1,8.1,4,5.2
1931,2.7,2.1,1.8,5.5,8.4,9.2,12,11.3,9.6,7.3,7.8,5.1
1932,5.3,5.1,3.9,4.5,7.9,10.1,12.8,12.5,9.6,6.5,5.9,5.2
1933,4.1,2.1,5.5,5.6,8.2,12.6,14.2,13.6,11.8,8.4,6.1,5.4
1934,5.1,5.5,4.1,5.4,7.9,10.8,13.6,13.4,11.7,7.8,5.5,6.7
1935,4.5,3.1,5.6,5.4,7.5,10.3,12.2,12.9,11,7.5,6.5,3.2
1936,2.2,2.7,4.4,4.7,8.4,11.1,13.9,13.3,11.4,8.1,6,4.6
1937,3.9,2.5,1.8,6.4,8.9,10.5,12.4,12.6,10.7,9.2,5.3,3.3
1938,4.4,4.1,6.4,6.3,7.3,10.4,12.3,13.1,11,8.8,6.5,4.4
1939,2.5,5.2,5,5.6,8.6,10.9,12.1,13.4,11.7,7.1,5.9,3.8
1940,1.7,2.1,3.2,5,9.1,12.2,11.8,11.4,9.6,8.2,5.2,4.1
1941,1.1,2.1,3.1,4.7,7,10.7,13.3,12.2,11.5,8.1,5.8,5.2
1942,1.7,1.7,2.4,6.3,8,10.1,12.1,12.5,10.7,7.6,6,5.4
1943,3.7,5,6,6.8,8.7,11.1,12.4,11.6,11,9.8,5.6,5
1944,4.2,3.5,3.8,6.2,7.8,10.3,12.7,13.1,10.4,8.2,4.3,3.9
1945,0.8,4.7,6.6,6.4,8.5,11.1,13.1,12.9,11.8,9.8,7.4,4.8
1946,4.4,3,4.3,6.7,8.3,10.7,13.1,12.6,11.8,8.4,6.4,4.7
1947,3.3,-0.2,0.5,5.5,9.2,11,13.9,14.8,11.4,8.9,4.9,4.6
1948,2.5,4.1,6.1,6.4,7.7,10.3,11.7,11.3,10.4,7.1,6.4,6.1
1949,3.9,4.8,3.3,6.5,8,10.4,12.6,12.3,12.4,9.3,7,3.8
1950,4.8,2.8,5.6,5.4,8.3,11.2,12.9,13.4,10.7,8.2,4.7,1.4
1951,3.1,3,2.4,4,7.2,9.4,11.5,12.2,11,9.3,6.7,4.4
1952,1.4,2.8,4.5,6.8,8.6,9.5,11.9,11.8,8.6,7.4,3.7,3.7
1953,4.4,3.4,5.8,4.8,8.3,11.2,12.9,12.8,11.6,9.5,7.4,6.1
1954,3.6,2.6,4.3,5.8,8.8,11.1,11.7,12,9.6,7.4,5.8,4.4
1955,2.1,0.3,3.2,6.5,6.7,10.1,13.5,13.4,11.8,7.3,7,2.5
1956,1.8,2.1,3.9,4.6,8.8,9.6,11.8,10.7,11.1,7.8,6.6,4.9
1957,4.9,3,6.1,6.6,7.5,10.1,11.9,11.7,9.8,8.2,6.3,4
1958,2.4,1.4,1.7,5.2,6.8,10.4,12.4,12.2,12.5,9.6,7.2,3.8
1959,0.6,4.5,5.8,7,8.7,11.1,13.2,13.1,11.7,10,6.8,5
1960,2.9,2.7,4.9,6.7,9.5,11.9,12.5,12.5,11.5,8.5,5.9,4
1961,3.4,4.8,6.1,5.8,8,10.6,12,12.3,11.7,9.6,5.6,2.4
1962,4,3.5,1.6,5.1,7.3,10.5,11,11.5,10.2,8.9,4.7,3.6
1963,0.9,1.5,4.6,5.8,7.7,11.4,11.5,12.2,10.5,8.5,5.4,3.5
1964,5.2,4.1,4.4,6.4,9.1,10.6,11.8,10.8,9.6,8,6,2.9
1965,2.7,4,3.2,5.7,7.3,10.7,10.3,11.5,10.8,9.4,3.2,1.8
1966,2.5,2,4.3,4.5,8,11.8,11.8,11.8,10.8,8.2,4.5,3.3
1967,3.6,4.7,4.7,5.3,7.4,10.4,12.1,12.1,11.6,7.7,6.2,3.7
1968,2.4,1.5,4.2,5.4,6.3,10.8,11.7,11.8,11.3,8.7,5.5,3.9
1969,4.35,0,2,5.3,7.5,11.2,12.55,13.85,10.5,9.65,2.85,3.5
1970,2.8,1,2.7,4.4,8.6,11.5,11.1,12.7,10.8,7.7,4.8,4.5
1971,4.2,4.7,4.3,5.8,9.3,9.5,11.8,12.1,11.1,8.7,4.8,6
1972,3.9,4.1,5,6.2,8.6,10.1,12.1,11.6,9.7,9.1,5.3,5.8
1973,5.5,3.1,5.9,4.2,7.6,10.3,12.1,11.9,10.7,7.2,4.1,3.2
1974,5.1,4.6,4.8,6.7,8.6,10.7,11.8,12.7,10.5,7,6,4.8
1975,4.1,4.5,3.7,4.9,7,9.8,12,13.7,10.1,9.2,6.2,4.7
1976,2.9,4.2,3.4,5.7,8.5,11.5,13.3,13.3,10,9.1,6.3,2.1
1977,2.6,2.6,5.1,4.6,7.8,9.6,11.9,12.1,9.7,9.4,5,5.4
1978,2.8,1.4,4.6,4.6,8.6,10.7,10.9,11.8,10.3,8.7,6.1,3.4
1979,0.8,1.1,2.8,5.4,6.4,10.5,11.2,11.5,10,8.8,5,3.9
1980,2.7,3.5,3.2,6.2,8.1,11.6,12.3,12.4,11.5,6.8,4.9,4.2
1981,2.4,3.2,4.3,5.4,8.2,10.2,12,12.4,12,6,5.1,0.8
1982,2.6,4.6,4.9,6.2,8.3,10.6,12.6,12.6,10.4,8.9,6.1,3.7
1983,4.3,2.5,4.7,4.6,7.8,10.2,12.7,12.5,10.2,8.1,6.2,4.9
1984,1.5,4.1,3.4,5.9,7.9,10.8,12.6,13.2,10.5,8.7,6.7,5.8
1985,2,3.2,3.6,5.2,7.8,10,12.6,12.7,9.9,9.4,3.2,3.4
1986,2.2,1.6,4.6,4.5,8.8,10.8,12,11.4,9.4,8.3,6.2,4.1
1987,2.4,2.8,3,7.2,7.5,9.3,12.5,12.1,10.7,8.4,6.1,5.6
1988,4,3.8,3.5,5,8.5,11.1,12.8,12.3,11.3,8.6,5.9,6.1
1989,6.5,4.3,5,5.7,8.7,10.5,12.5,12.2,10.8,8.6,6.5,4.2
1990,5.1,4.9,5.6,5.9,8.7,10.9,12.4,13.2,10.3,9,6.1,4.3
1991,4,2.9,5.8,6.2,8.3,9.3,13.7,13.7,10.7,8.5,6.2,5.2
1992,5.4,5,4.6,6,9.4,12.4,12.4,12,10.7,6.6,5.5,4.2
1993,3.7,4.6,5,6.2,8.2,9.6,11,11.2,10.1,7.1,5.7,2.8
1994,3.2,2.7,3.6,5.6,7.3,10,13.2,12.5,10.2,7.6,7.5,4.7
1995,3.2,3,3.4,5.2,7.3,10.6,12.3,13.5,11.4,9.6,6.6,2.6
1996,5,2.7,3.8,6.4,6.7,10.8,11.8,13.4,11.4,9.3,3.8,3.2
1997,4.7,4.4,5.5,5.6,7.7,10.4,13.4,14.7,11.2,8.1,7.5,5.8
1998,4.7,5.7,4.8,5.6,9,10,11.8,11.8,11.9,7.5,5.5,4.9
1999,4.3,2.8,5.3,6.6,8.1,10.4,12.2,12.6,12.6,9.1,7,3
2000,4.6,4.1,5,5.3,8.9,9.7,11.5,12.5,11.7,9.4,6.8,4.9
2001,4.6,2.1,3.3,5.5,9,9.9,12.3,12.7,10.7,10.8,6,4
2002,5.3,3.8,4.9,7,9.2,12.6,12.8,14.2,12.3,7.6,6.9,5.2
2003,4.3,4.6,6.7,7.2,8.9,12.5,14.9,14.4,11.8,7.7,7.7,4.9
2004,4.2,4.1,5.9,7.6,9.3,11.2,12.3,14.1,11.7,9.1,6.2,5.6
2005,4.9,4,5.1,6.8,7.8,10.8,12.7,12.6,11.3,9.8,6.5,5.3
2006,5.5,4.5,2.5,5.4,8.2,11.3,14.4,13.7,13.1,10.1,7.4,6.4
2007,4.9,4.6,6.1,7.8,8.3,10.8,12.4,12.2,10.2,9.4,5.8,5.4
2008,4.4,5.4,4,6.2,9.5,11,13.6,13.7,12.3,8,5.9,4.8
2009,4.7,3.5,5.7,7.9,9.3,11.3,14,13.7,12.1,8.7,7.4,3.8
