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