1901,2.9,4.1,6.7,9.9,13.4,15.9,16.1,15.9,14.6,11.6,7,4.2
1902,3.7,4,7.4,8.6,13.5,14.5,15.6,15.3,14.3,10.7,7,3.8
1903,2.3,3.8,6.4,9.8,12.5,15.2,16.1,15,14.8,12.3,7.4,4.2
1904,2.6,4.4,6.2,8.7,12.5,15.5,15.6,15.3,14.6,11.9,6.6,3.3
1905,2.7,4,4.7,7.7,13.1,16.1,15.9,14.3,15.1,11.6,7.4,4
1906,3,3.3,5.5,8.3,12.8,15.5,16.3,14.3,15.3,11.6,7.3,4.2
1907,3.8,3.6,5.2,8.5,12.8,14.8,14.9,16,13.8,12,7.7,4.4
1908,3.2,4.4,7,10.4,13,15.9,15.4,15.8,14.3,11.4,7,3.9
1909,2.5,4.3,7.7,9.4,12.1,14.9,15.9,15.2,15.7,12.6,8.8,4.8
1910,3.1,4.1,6.2,9.3,13.5,14.7,14.8,15.3,14.8,11.4,7.6,4
1911,3.8,3.6,6,9.6,12.6,15.4,15.2,15.2,14.7,11.2,7.1,3.5
1912,3,4.4,5.9,8.4,13.4,15.6,15.1,15.1,14.2,11,7.2,4.1
1913,3.1,4.3,5.4,8.3,11.4,15.2,15.5,15.5,14.4,11.6,6.4,3.4
1914,3.5,4.1,6.8,8.7,12.9,16,16.4,14.4,14.2,10.4,7,4.8
1915,4,4.8,6.8,10,12.7,14.6,14.9,14.7,14.1,13.7,8.9,5.4
1916,3.2,4.9,7.6,9.7,14,16.7,16.6,16.6,15.7,11.8,8.7,4.8
1917,2.7,3.5,6.4,8.4,13.5,15.9,16.6,16.5,15.1,12.3,9.2,3.9
1918,2.9,4,6.7,8.5,13.1,15.4,16.6,16,15.7,12.3,7.1,5.1
1919,4.2,4.6,8.1,10.1,14,16.8,16.3,17.1,14.3,12,8.5,4.8
1920,4.4,4,7.3,9.1,12.7,16,17.3,16,15.5,12,7.4,5.3
1921,5,4.3,7.3,10.8,13.5,16,16.2,16.4,14.8,11,7.8,5.6
1922,4.9,5.7,8.1,10.2,14.2,15.8,16,15.9,15.3,11.8,7.7,4.6
1923,4.7,4.7,8,10.1,12.5,15.2,16,16.2,15.1,11.6,9,6
1924,4.3,5.2,8.7,10.2,13.4,15.9,15.7,15.6,15.2,12.6,8,5.7
1925,2.7,3.8,7,9.6,12,16.2,16.1,15.5,13.9,11.2,7.8,3.9
1926,4.7,5.2,6.4,9,13.8,15.7,16.2,17.1,15.7,13.4,7.5,5
1927,4.4,3.1,6.1,9.1,13.3,16.7,17.4,16,15.6,13.1,7.7,5.5
1928,3.8,6.6,8.9,11.5,13.4,15.1,17.3,15.8,14.9,11.3,7.2,4.1
1929,2.7,4.2,7.4,9.5,12.9,16.1,16.6,16.9,15.3,11.2,7.3,4.7
1930,2.7,4.6,5.4,9.9,14.1,15.7,17.7,16.6,15.1,10.8,7.7,5.2
1931,4.2,4.4,6.8,10.8,13.8,15.8,16.1,17.3,14.2,12.9,7.4,5.2
1932,3.6,2.6,6.7,9.8,13.6,16.7,16.7,16.5,14.5,12.4,8.2,5.4
1933,4.3,5.9,8.3,9.7,13.7,16.2,16.8,17.1,16.2,13.1,7.7,5
1934,3.2,4.2,7,10,13.7,16.2,17.3,17.2,15.8,12.3,6.8,5
1935,2.5,4,7.8,9.9,14,15.8,17.3,15.8,15.6,13.1,8.5,3.5
1936,2.2,4,6.7,10.3,13.5,16.4,16.6,15.7,15.4,11.3,8.2,4.6
1937,2.7,5.3,7.5,11.1,13.9,16.1,16.8,16.3,15.4,12.4,6.9,5.5
1938,3.6,4.4,7,10.9,14.2,15.5,15.8,16.2,15,12.4,6.8,5.1
1939,4.1,4.7,8.1,8.7,13,15,15.9,16.2,14.4,12,8.6,4.9
1940,3.4,5.4,5.1,9,12.7,15.5,16.5,16.3,15.2,12.4,7.2,6
1941,3.8,4.8,7.1,9.8,12.7,15.6,17,16.1,14.3,11.7,7.1,5.9
1942,4.3,6.4,7.2,10.4,13,15.5,17.4,16.2,15.1,13.2,8.3,4.7
1943,3.7,3.5,6.9,10,13.6,15.8,16.5,15.7,15,11.6,8.5,5.1
1944,4.3,4.9,7.5,10,12,15.5,16.6,16,14.1,12.4,7.9,4.7
1945,5.2,2,7.6,11.7,11.7,16.8,16.4,15.6,15.7,10.8,8,4.3
1946,4.8,6,7.9,10.7,14,16.8,16.2,17.2,15.9,12,8.9,6.4
1947,5,5.3,7.2,8.4,13.9,15.2,16.4,16.6,16.2,10.8,7.6,5.6
1948,4.1,4,7,10.5,11.6,15.6,15.5,16,15.9,11.1,7.2,4.8
1949,3.4,4.8,7.2,8.6,12.7,15.6,15.7,15.5,15.9,12.2,7.8,4.5
1950,4,3.5,7.3,9.9,13.7,15.2,16,15.4,14.4,12.1,8.2,4.4
1951,3.7,5.6,7.2,8.7,13.2,15.5,15.5,16.5,14.2,11.9,7.3,4.9
1952,3,5.2,6.5,9.9,13.6,16.1,16.4,15.9,15,12.5,8.5,4.4
1953,3.7,4.5,8.1,10.4,13.5,16.2,16.3,17.5,14.7,12,7.8,5.9
1954,2.6,5.3,6.8,10.7,13.7,15.6,15.6,15.4,15.1,11.6,7.2,4.6
1955,2.8,4.5,7.2,9.1,13.7,15.3,15.3,15.1,15.5,12.3,7.2,2.8
1956,1.7,3.8,7,10.1,12.9,15.7,15.6,15.6,14,11,6.6,4.4
1957,3.6,2.6,6.1,9.5,12.4,15.2,16.1,15.5,14.7,10,6.6,4.1
1958,3.1,2.6,7.4,10.8,13.8,17.1,16.5,15.3,15.2,12.2,7.6,4.4
1959,2.9,2.7,6.2,10.1,12.6,15.5,16.7,16.3,13.8,11.3,6.8,4.7
1960,2.8,4.5,7.2,10.9,13.8,15.7,15.9,16.5,14.9,11.3,7.2,4.5
1961,4.2,4,6.3,9.8,12.7,16.7,16.6,16.3,15,13.1,6.2,3.1
1962,2.1,4.1,5.9,10.2,12.9,15.3,16.9,15,14.9,11.7,6.9,4
1963,1.5,3.6,6.4,9.8,13.8,15.6,16.3,15.9,16.2,10.6,6,3.6
1964,2.7,4.4,6.8,10.2,13.7,15.5,16,15.8,15.3,13.2,8,3.9
1965,2.8,3.7,5.6,9.6,13.4,15.3,15.9,14.9,14,11,6.1,5.2
1966,3.7,5,7.7,10.2,14.2,14.1,16.3,15.7,14,10.3,8.3,5.1
1967,4,3.7,5.7,8.7,13.2,15,16.4,16.7,14.6,10.5,5.8,3.4
1968,2.5,1.9,6.5,8.3,12.5,14.7,15.4,15.7,15.3,11.5,7.1,4.8
1969,2.8,4.5,7.8,10.1,14.9,15.4,16.2,15.4,14.5,10.8,6.9,4.4
1970,2.6,4.2,7,9.5,13,15.8,15.8,16.1,15,11.1,6.9,4.5
1971,2.5,3.1,7.5,10,12.5,15.9,16.3,15.4,15.6,11.8,6.3,3.3
1972,3.6,4.2,7.4,8.6,13.4,16.4,16.6,16.5,14.4,11.2,6.9,4.6
1973,3.7,5.4,7.8,10.8,13.6,15.4,16.2,16.2,15.2,12.2,7.2,4
1974,2.4,4.3,5.9,8.9,13.4,15.5,15.1,15.1,14.2,13.6,9.3,4.6
1975,3.3,4.3,7.1,10.1,13.4,16.6,15.8,16.3,15.1,13,7.3,2.9
1976,2.7,4.7,7.3,10.1,12.6,15.1,15.5,16.1,14.5,11.1,6.6,4.2
1977,3,3.2,7.4,9,12.4,14.9,16.4,15.5,14.7,10.2,7.2,4.4
1978,2,4.1,6.9,9.7,12.5,15.6,16,16.5,14,11.9,7,4.4
1979,3.5,4.3,6.8,10.9,15,16.1,16.3,16.4,14,10.2,7.8,4.7
1980,2.5,4.3,7.3,10.4,13.6,16.1,16.4,15.5,15,10.5,7.8,4
1981,3.9,5.1,6.4,9.3,12.8,16.2,16.5,16.7,15.2,12.6,8,4.5
1982,3.4,3.4,7.3,8.2,13.6,15.3,16.2,16.2,15,11.3,6.6,3
1983,1.7,2.1,5,8.7,13.7,16.2,16.9,15.7,15.3,13.4,7.1,3.4
1984,2.8,5.6,7.5,10.6,12.4,16.2,15.8,16.1,14.1,11.9,6.7,5.4
1985,3.3,3.6,7,9.2,13.3,15.3,15.3,16.3,14.3,11.6,6.4,4.5
1986,3.6,4.3,6.4,9.3,13.7,17.1,15.9,15.8,14,9.9,7.1,5.4
1987,4,5.4,6.8,9.6,14.1,16.9,15.5,15.3,14.1,11.6,8.6,4.7
1988,4.3,5.9,7.4,9.9,13.4,16.2,16.4,15.6,14,12.9,8.1,5.9
1989,2.8,4.7,7.4,9.5,13.9,16.4,15.9,15.9,15.3,11.7,6.9,3.6
1990,4.3,4.6,5.5,8.8,12.3,14.9,16,16.1,14.2,11.3,8.7,5.3
1991,3.5,5.5,8.3,10.1,12.9,16,16,15.4,14.2,12.1,7.2,4.5
1992,2.5,1.9,7.1,10,13,16.4,15.6,16.3,15.3,10.8,6.6,3.5
1993,3.2,4.5,6.7,9.7,13.1,15.8,16.1,15.3,14.2,11.7,7.8,5.5
1994,5.5,4.7,6.5,10.3,15,16,16.4,16.9,15.9,11.1,7.6,4.6
1995,3.7,3.8,7.3,10.5,14.4,16.2,16,16.1,14.5,12.5,8.7,4.8
1996,3.3,4.9,7.3,9.8,13.1,15.7,15.8,16.2,14.8,12,8.6,5.1
1997,2.6,3,7.2,8.1,13.3,15,16,16.4,13.4,10.9,7.8,5.6
1998,3.9,4.7,7,9.9,14.6,16.1,16.1,15.6,15,13.1,9,5.7
1999,4.4,6.6,8.7,12.2,13,16.6,15.9,15.4,15.4,12.9,8.1,5.1
2000,3.7,4,6.2,9.5,13.2,16.1,16.3,15.6,14.5,12.4,7.8,5.1
2001,3.9,4.8,6.9,9.9,12.1,15.2,16.7,16.2,15.4,12.4,8.1,5.9
2002,3.8,6.2,7.6,10.5,12.9,16.6,16.4,15.9,15,11.9,8.6,5.6
2003,3.6,5.5,7.6,11.2,13.4,15.5,16.4,17.1,15.4,12.8,8,5.9
2004,4.5,4.6,8.1,9.8,13.4,15.6,15.4,16.6,14.7,11.2,7.2,5.2
2005,4.7,6.3,7.1,10.3,13.9,16.9,17.3,16.5,16.1,12.7,7.3,5.7
2006,3.8,6.4,8.1,10.2,13.2,16.4,17.6,17.6,15.4,12.1,8.1,5.3
2007,4.1,5,8.2,9.7,14.3,16.3,16.7,17,14.9,12.8,8.4,5.7
2008,5.2,3.1,6.7,10,13.6,15.9,16.5,15.9,15.9,12.3,8.1,5.7
2009,4.7,6.8,7.9,10.7,14.6,16.8,17.4,16.5,16.5,13.2,8.2,5
