1901,4.7,3.6,4.4,7.1,11,12,14.7,13.7,12.7,8.8,6.3,4.6
1902,5,3.4,6.2,7.3,8.2,12.2,12.9,13.2,12.5,9.6,7.1,5.3
1903,4.1,6.2,5.5,6.5,9.5,12.3,13.6,12.8,12.2,9,6.4,4.1
1904,4.3,3.6,4.5,7.1,9.3,12.3,13.8,13.2,11.7,9.3,6.2,5.4
1905,5.2,4.7,5.7,7,9.9,13.1,14.4,12.9,11.3,7.6,5.2,6.4
1906,5.4,3.6,5.3,6.7,8.6,12.8,13.6,14.4,12.8,9.5,6.8,4.5
1907,4.7,3.7,6.7,6.9,9.1,10.7,13.3,12.8,12.9,8.6,6.3,5
1908,4,5.7,4.8,6.5,10.6,12.2,13.8,13.4,11.7,11.9,8,5.8
1909,5.2,5,4.2,7.9,10.1,11.5,13.1,13.8,11.6,9.4,5,4.3
1910,4.1,4.3,6.2,6.3,9.8,12.5,13.2,13.7,11.7,10.2,4.7,5.9
1911,4.7,4.9,5.3,7,10.9,12.5,14.5,15.2,12,9.4,5.6,5.5
1912,4.5,4.7,6.3,8.4,10.4,11.8,13.2,11.3,11,8.6,6.5,6.1
1913,4.4,5,5.2,7.2,9.4,11.6,13.2,13.9,12.5,9.8,7.1,5.2
1914,4.4,5.3,5.5,8.7,9.2,12.2,13.6,14.2,12.6,9.9,6.4,3.8
1915,4.1,3.6,5.1,7.6,10.1,12.9,13.2,13.9,12.9,9.9,4.6,4.7
1916,6.4,3.8,3.6,7.1,9.3,11,13.5,15.2,12.8,10.1,6.5,3.6
1917,2.7,3.3,4.6,5,10.3,12,14.7,14.1,12.2,7.3,7.3,4
1918,3.6,6.2,5.9,7.1,10.8,12.1,13.5,13.8,10.3,8.4,6.2,6.8
1919,3.9,3.8,3.5,6.7,11.5,11.8,12.8,13.9,11.4,9.1,2.8,5.5
1920,4.6,5.8,5.6,6.6,9.6,12.3,12.4,12.7,11.9,10.7,7.9,4.7
1921,6.4,5.7,6.3,8.1,9.4,12.6,15.5,13.1,12.5,11.7,7.6,7.6
1922,5.2,5.9,5.9,5.5,10,11.7,11.9,12.3,11.4,9,6.8,5.8
1923,6.1,5.8,6.7,7,8.3,11.3,14.4,13.4,11.1,8.9,4.1,5.6
1924,5.5,4.8,5.3,6.4,9.5,12,13.4,13,11.5,9.6,7.2,6.8
1925,5.8,4.5,5.5,6.8,9.1,12.6,13.5,13.6,10.9,10.1,5.3,4.5
1926,5.6,6.8,6.6,9.2,9.4,12.2,15.4,15,13,8.3,5.7,5.1
1927,4.9,5.8,6.8,7.2,10,10.9,14,13.9,11.5,10.3,6.5,4.2
1928,5.4,6.3,5.8,7.4,10.3,11.5,13.4,13.5,11.9,10.1,7.1,5.4
1929,3.8,4.7,7.9,7.5,10.2,11.9,13.9,13.6,13.5,9.1,6.7,5.5
1930,4.3,3,5.2,7.5,9.9,12.8,13.4,13.3,12.4,9.8,6.1,5.7
1931,4.8,4.8,5.9,7.8,10.1,12.4,13.5,13.6,11.7,9.6,7.5,6.9
1932,6.7,5,6.1,6.8,9.9,13.2,14.1,15,12.1,8.7,7,6.1
1933,3.8,4.7,7.2,8.7,10.8,13.2,15.3,15.1,13.6,10,6.3,4.6
1934,5.6,5.2,5.5,6.8,9.5,13.5,15.8,13.6,12.3,9.3,6.3,7.4
1935,5.4,5.5,7,7.5,10.1,12.4,14.4,14.4,12.4,9.1,5.7,4
1936,3.7,4.4,6.7,7,10.4,12.7,13.9,14.8,13.4,10.4,6.3,5.8
1937,5,5.1,3.9,8.7,10.6,12.2,13.8,14.8,12.4,9.3,6.6,4.6
1938,5.5,5.4,8.2,8.2,9.8,12.1,12.9,13.8,12.5,10,8,4.7
1939,4,6.2,6.2,8.1,10.6,13.1,13.3,14.4,13,8.6,7.7,4.4
1940,3.2,5.2,6.3,8.3,11.2,15.1,12.9,14.2,11.7,9.3,6.7,5.4
1941,2.3,3.8,5.2,6.5,8.9,12.9,13.8,13.3,13.9,10.5,6.6,6.7
1942,4.7,3.7,6.7,9,10.2,12.4,13.7,14.4,12,9,5.5,7.2
1943,5.6,6.6,7.4,9.3,10.2,12.5,14.3,13.4,11.8,10.1,7.1,5.5
1944,6.6,4.9,6.3,9.3,10.1,12.1,14.4,14.8,11.6,9,6.5,5.4
1945,2.5,6.9,8.5,9.6,10.6,12.5,14.5,14.8,13.6,11.4,8.3,6.8
1946,5.1,5.9,6.3,8.6,10.6,11.7,13.7,13,12.6,10.3,7.5,4.7
1947,4.1,1,4.4,7.7,10.5,12.7,13.8,16.3,13.1,11,7.3,5.7
1948,4.9,5.5,9,8,10.2,11.9,13.5,13.8,12.2,9.9,8.7,6.3
1949,5.9,6.3,6.7,8.6,9.5,13.1,14.8,14.6,14,10.8,7.1,5.9
1950,5.7,4.7,7.6,7.3,10.8,13.4,14.2,13.6,11.5,9.3,5.6,3
1951,4.1,3.4,4.5,6.5,9,12.4,14.3,13.4,12.4,10.2,7.4,5.7
1952,3.5,5.1,6.9,8.4,11,12.1,14.5,14.1,10.8,9.4,5.9,5.1
1953,5.1,5.7,6.4,6.7,11.1,12.3,13.8,14.1,13.1,9.8,7.7,7.5
1954,4.7,4.4,6.3,8.1,10.3,12.1,12.7,13.1,11.3,10.5,6.4,6.6
1955,3.6,2.4,4.3,9.2,9.4,12.6,15.2,16.1,13.5,9.1,7.6,6.4
1956,4.4,3.2,7.5,7.7,10.6,11.8,13.8,12.6,12.8,9.6,7.2,6.4
1957,5.3,4.8,8.8,8.5,10.3,13.3,14,14,11.9,10.1,6.7,5.7
1958,4.6,5.4,5,7.9,9.2,12.2,13.8,14.2,13.7,10.4,7.9,5.1
1959,3.5,6.5,7.2,8.2,11.1,13.3,14.6,14.9,13.8,12.1,6.8,5.9
1960,4.8,4,7.2,8.6,11.7,13.8,13.9,13.7,12.1,9.5,6.7,4.7
1961,4.2,7,8.5,8.7,10.3,12.2,12.8,13.4,12.5,9.5,6.3,3.2
1962,4.7,5.5,4.1,7.6,9.7,11.9,13.7,13.1,11.3,10.5,6.3,5.1
1963,2.1,2,6.4,7.8,9.1,13.3,13.4,12.7,11.6,10.6,6.9,4.1
1964,5.6,5.2,5.9,8.2,11.2,12.2,13.7,13.5,12.9,9.4,7.6,5
1965,3.7,3.9,6,7.9,10.4,12.5,12.9,13.4,10.8,10.5,4.8,5.1
1966,3.8,5.7,7.1,7,10,13.3,13.6,13.5,13.1,8.8,5.7,6.1
1967,5.2,5.3,6.3,8,8.7,12.5,13.7,13.5,12.1,8.9,6.1,5.6
1968,5.6,2.8,6.2,7.4,8.7,12.6,13.2,14.2,12.6,11.7,6.6,4.6
1969,4.7,2.2,4.4,7.5,9.7,12.5,14.1,14.1,12.4,12.2,5.2,5.3
1970,4.6,3.7,5.1,6.8,10.7,14.2,12.9,13.7,12.6,10.5,6.9,5.1
1971,5.6,5.6,6.2,7.7,10.1,11.6,14.3,13.8,13.7,11.4,7.3,7.2
1972,3.7,4.6,5.6,7.8,9.4,10.3,13.4,12.7,11.2,10.6,6.1,6.1
1973,5.6,5.4,6.3,7.1,9.9,12.2,13.5,14.3,12.8,9.4,7.2,5.8
1974,5.9,5.7,5.7,8.5,9.9,12.3,13.4,13.6,10.6,8.2,5.7,7.3
1975,6,5.9,5.3,7.8,9.2,12.7,14.9,15.2,11.7,10.6,7,6.1
1976,6,5.2,6.1,8.4,10,13.4,15.3,15.6,12.4,8.8,6.6,2.9
1977,3.7,4.7,6.9,7,9.9,11.4,14.4,14.1,11.8,11.1,5.6,6.3
1978,4.2,3.7,6,6.9,10.4,11.8,13.3,13.5,13.1,11.3,8.2,4.8
1979,2.4,3,4.3,6.7,7.9,12.2,13.9,13,12,10.3,7.2,5.4
1980,3.5,5.6,5.1,8.2,10.5,12.3,13.2,14.1,13,8.9,6.8,6.4
1981,6.5,5,7.2,8.5,9.9,11.9,13.2,14.7,13.1,7.6,7.9,2.9
1982,4.5,5.7,6.1,8.7,10.3,13.5,14.7,13.9,12.1,9.6,6.8,5.2
1983,6.4,3.8,7.1,6.2,9.3,12.4,15.9,15.7,12.5,10,8.1,7
1984,3.9,5.7,5.1,9,9.6,12.4,14.8,15.6,12.4,9.9,6.1,5.9
1985,1.8,4.6,5.5,8.4,9.4,11.7,13.8,12.7,13,10.3,4.8,6.4
1986,4.4,1.1,5.5,5.8,9.3,12.7,13.4,11.9,11,10.3,7.3,5.9
1987,3.4,4.7,5.3,8.9,9.7,11.5,14.4,14.2,12.1,8.4,7.2,6.1
1988,4.8,5.2,6.9,8.8,10.4,13,13,13.4,11.9,9.7,6.5,8.3
1989,7.6,6,6.4,6.3,10.9,12.5,15.5,14.5,12.3,10.7,6.7,4.1
1990,6.1,5.8,8,7.7,12,12.1,15.2,14.8,11.7,10.5,6.9,5.1
1991,4.1,3.8,7.5,8,10.4,11.8,15.5,15.2,13.6,9.4,6.9,6.4
1992,5.5,6.5,7.3,8.1,11.9,13.7,14.8,13.2,10.9,8.1,7.2,4.8
1993,5.9,6.9,6.8,8.9,10.2,12.8,13.6,13.2,12,8.3,6.1,5.3
1994,5.1,4.3,6.6,7.3,9.9,12.1,14.7,13.8,11.8,10.5,9.2,6.4
1995,5.2,6,5.5,8.5,10.1,13.3,16.1,16,12.9,11.6,7.9,3.7
1996,5.3,4.1,5.5,8.5,8.9,12.8,14.2,14.4,13.7,11,6.4,4.5
1997,4.1,6.2,7.9,9.5,11.4,12.7,14.8,16.1,13.3,10.5,8.3,6.6
1998,5.5,7.9,8,7.6,11.4,12.7,13.8,14.5,13.8,10.3,7.5,6.6
1999,5.5,6.5,7,9.1,11.4,12,15.4,15.1,13.4,10.5,8,5.4
2000,5.7,6.4,7.6,7.3,10.8,13,15.3,14.9,13,9.6,6.5,5.1
2001,3.8,4.8,5.4,7.7,11.4,12.4,14.1,14.5,13,11.7,8.6,5.1
2002,7,6.4,7.3,8.7,10.5,12.2,13.5,14.4,13.5,9.5,8,5.5
2003,5.2,5.6,7.5,9.8,10.3,13.7,15.1,15.8,13.2,9.8,8.1,5.9
2004,6.1,5.4,6.9,8.9,10.8,13.4,13.8,15.3,13.4,8.9,8.5,6.8
2005,6.6,5.5,8.1,8.6,10,13.7,14.6,14.8,13.4,11.2,7.2,6.4
2006,5.5,5.8,5.9,8,10.6,14,16.1,14.7,14.4,11.7,7.7,6.5
2007,6.6,5.8,7.2,10.4,10.7,13.9,14.2,14.3,13,12,8.9,6.6
2008,5.9,6.1,6.2,7.9,12.1,12.8,14.7,14.6,12.2,9.4,7.4,5.3
2009,4.6,5.7,7.5,9.2,10.5,14,14.8,14.3,12.8,11.3,7.3,3.7
