1901,3.4,4.9,7.9,11.5,15,17.9,18.2,17.5,16.1,13.6,8.7,4.4
1902,3.7,4.6,8.5,10.7,15.5,17,17.7,16.9,15.8,13,8.6,4.2
1903,2.5,4.3,7.8,11.7,14.6,17.4,18,16.5,15.9,14.1,8.5,3.6
1904,2.3,4.9,7.1,10.5,14.4,17.6,17.6,16.9,16.1,13.9,8,3.2
1905,3.4,5.4,5.8,10,15.3,18,17.9,16.4,16.5,13.7,8.8,4.8
1906,3.3,4.7,6.6,10.4,15.1,18,18.3,16.5,16.8,13.6,8.6,4.3
1907,3.6,4.5,6.5,10.3,14.7,17.1,17.4,17.4,15.5,14.1,9.3,3.9
1908,3.4,4.8,7.6,11.9,14.8,17.9,17.6,17.2,15.9,13.6,8.3,3.9
1909,2.9,5,8.4,11.1,14,17.5,17.9,17,16.9,14.6,9.7,4.6
1910,3.5,4.7,7.1,11.2,15.7,17.2,17.1,17.1,16.1,13.3,8.8,3.7
1911,3.5,4.4,7.3,11.2,14.6,17.9,17.4,17,16.2,13.2,8.8,4.2
1912,2.9,4.9,7.3,10.5,15.5,17.8,17.2,16.7,15.5,13.2,8.4,4
1913,3.1,5,6.2,10.4,13.6,17.5,17.6,16.8,15.7,13.5,7.8,3.4
1914,3.4,4.9,7.8,10.9,15,17.8,18.3,16.3,15.8,12.7,8.3,4.8
1915,3.9,5.6,7.7,11.9,14.4,17.2,17.2,16.7,15.7,15.4,9.6,4.6
1916,3.9,5.7,7.9,11.9,15.8,18.7,18.6,18.3,17.3,14.6,10.4,5.5
1917,2.7,4.1,7.1,10.5,14.9,18.5,18.3,18.4,17.2,14.8,10.8,3.4
1918,2.8,4.8,8.6,10.7,15.8,18,18.8,18.2,17.1,15.2,8.2,5.2
1919,4.5,5,9.2,11.7,15.3,19.1,18.8,19,15.6,14,10.5,5.4
1920,5.1,5,9.3,10.6,14.7,18.1,19.5,17.3,17.6,14.1,8.2,5.1
1921,5,4.5,8.9,13,16.4,19.5,19.1,19.5,16.8,13.2,9.7,5.6
1922,5.4,5.2,9.8,12.4,16.6,19.3,19.2,18.9,17.8,14.2,9.9,5.2
1923,4.3,6.6,8.1,12,15.3,17.6,18.3,18,17.3,14.2,11.4,6.9
1924,4.7,6.4,8.6,12.4,16.3,18.8,18.7,18.8,17.5,15.4,10,5.1
1925,3.3,4.8,7.8,11.9,15.5,18.8,18.7,19.3,16.7,13.5,8.8,4.1
1926,5.2,5.5,8.5,11.3,15.7,19.2,19.4,19.2,18.3,14.3,9.9,7.4
1927,5,6.2,7.8,11.3,15.6,19.5,19.3,19.5,16.6,14.5,9.2,5.1
1928,5.5,5.3,8.8,11.9,16.2,18.2,19,19,17.5,12.7,7.6,5.5
1929,5.9,5.8,7.8,11.5,16.8,19.1,19.3,19.8,17.8,15.2,9.8,6
1930,3.9,5.8,7.8,12.3,16.7,18.4,19.6,19.5,17,15.3,11.4,5.3
1931,3.4,7.9,8.7,13.1,17.4,19.2,18.6,20.1,17,15,9.2,6.3
1932,3.5,3.9,6.8,12.6,16.7,19.2,19.3,19.4,18,14.7,10.8,5.5
1933,4.7,6.2,8.3,12.1,16.2,18.5,19,18.8,17.8,16,9.8,5.7
1934,3.4,5.2,7.7,12.4,15.3,17.5,18.9,18.7,17.7,13.8,9.6,3.8
1935,2.6,5.3,8.6,12,15.8,17.5,19.4,16.9,16.3,15,10.2,5.1
1936,2.5,4.3,7.8,12.3,15.1,18,19.5,18.6,16,13,9.2,5.9
1937,2.7,6,7.3,12.7,15.2,17.8,19.3,18.4,17.6,14.7,9.2,7.7
1938,4.6,5.6,8.6,12.8,15.4,18.6,17.6,18.4,17.7,14.4,6.9,5.1
1939,4.3,5.2,9.1,10.7,14.8,17.1,18.4,17.5,16,13.1,9.3,3.3
1940,1.1,5.5,7.1,11.1,14,17.5,18.3,17.9,16.5,13.6,7.5,6.1
1941,4.4,6.1,9.2,11.8,14.3,16.7,18,17.5,14.9,13.1,8.8,7.5
1942,5.3,7.6,9.2,11.9,14.4,16.9,17.7,16.3,15.4,13.5,10.8,5.9
1943,5.2,3.8,8.7,10.9,14.9,16.9,17.2,15.8,14.9,13.7,9.4,5.4
1944,5.7,6.9,9.1,11.5,13,16.4,17.8,16.8,15.7,14.5,8.2,2.9
1945,4.4,2.8,7.8,12.4,13.5,18.5,18.2,17.7,16.7,12.7,8.4,4.5
1946,4.2,6.3,8.8,13.5,15.9,18.2,17.8,18.8,16.8,14,9.7,7.5
1947,4.4,5.8,8.3,11.6,16.8,18.2,18.8,18.2,17.3,14.2,8,6.1
1948,4.3,5.4,8.2,11.7,14,17.9,17.5,17.2,16,11.3,8.6,3.7
1949,2.2,4.6,8.4,11.6,14.2,18,17.4,17.2,16.2,13.5,9.9,3.6
1950,3.1,2.7,8.5,11.4,15.1,17.1,17.3,16.8,16.1,14,7.9,3.4
1951,2.7,5.5,8.4,11.2,13.9,17,17.8,16.9,15,12.9,7.6,4.4
1952,2.8,5.4,8.1,11.3,15.9,17.1,17.5,17.1,15.9,14.3,7.5,2.1
1953,2.3,4.1,8.5,10.8,14.6,16.8,17.9,17,15.5,13.1,8.5,4.9
1954,1.1,4.7,6.2,11.1,15,17.3,18,17,16.2,12.8,5.7,3.5
1955,2.5,4.5,7.9,9.9,15.2,17.7,18,16.7,15.9,14.2,9,2.1
1956,1,4.4,8,10.5,15.9,17.5,17.3,17.1,15.1,12.7,8.6,3.3
1957,3,3.9,6.6,10.8,14,16.9,18.6,16.7,16,11.8,6.2,3
1958,2.5,4.1,8,11.5,15.4,18.1,18.4,17.3,15.4,13.5,7,3.3
1959,2.4,5.3,7.1,11.6,14.9,17.7,18,17.5,15.6,14,6.2,4.3
1960,3,5.1,7.7,10.7,15.2,18.2,18,17.7,15.5,12.7,7.5,4
1961,3.3,5,7.5,10.8,15.1,17.7,18.2,17.5,15.3,13.9,7.2,3.5
1962,1.4,4.4,6.5,11.4,15,17.6,18.5,17.3,15.6,13.8,6.4,3.2
1963,1.3,3.4,7,11,14.7,17.4,18.3,17.5,16.1,12.9,7.4,3.8
1964,2.1,4.1,7.1,11.3,16,17.5,17.9,17.5,16.4,14.8,9.2,3.3
1965,2.5,4.5,6.3,11.3,15.2,18,17.8,17,16.4,14.3,7.4,6.3
1966,4.2,5.1,8,11.7,15.8,16.9,18.1,17.7,15.8,13.2,9.3,4.8
1967,4.6,4.4,7.7,10.5,15,17.1,18.4,17.4,16.4,12.7,7.2,3.7
1968,2.8,2.5,7.8,10.2,14.6,17.5,17.8,18.1,16.8,13.9,7.9,3.6
1969,2.6,4.2,8.1,11.4,16.1,17.7,18.5,17.3,15.3,13.6,8.2,4.1
1970,2.6,5.1,8.1,11,15.7,17.2,18.1,16.9,15.9,13,9.1,4.9
1971,2.7,3.7,7.7,11,14.8,18.1,17.6,16.8,16.2,12.6,6.1,4.2
1972,3.6,4.9,7.6,10.4,14.9,17.9,18.2,16.7,15.9,12.9,9.1,5
1973,3.8,6.2,8.2,12.2,16.9,18.4,17.8,17.5,16.9,14.2,10,4.6
1974,1.9,4,6.9,11.1,15.5,17.9,17.8,17.4,16.1,15.1,11.4,4
1975,3.9,4.9,8.2,12.2,15.3,18.3,18,17.1,16.1,14.6,9,1.9
1976,2.7,5.9,7.7,10.8,15.6,17.3,17.7,17,16.4,13,9,3.6
1977,2.7,3.5,7.9,11.7,14.6,17,18.3,17.5,15.6,13.1,9.1,4.9
1978,2.6,4.5,7.7,10.9,15.3,18.1,17.9,17.4,15.8,12.6,7.8,3.9
1979,2.8,5.1,8.5,11.5,15.3,17.9,18.3,17.7,16.4,11.7,8.1,5.5
1980,2.8,4.3,8.2,11.9,15.3,18.5,18.4,17.7,16.4,13.6,7.9,4.9
1981,4.2,5.4,8.2,10.9,15.1,18,17.9,17.8,16.1,13.7,10.5,4.9
1982,3.3,5.2,8.1,10.6,14.5,17.8,18.5,17.4,16.5,13.1,8.5,3.3
1983,2.7,5.3,7.3,11.5,15.2,18.5,18.9,17.5,16.6,14.6,9.3,2.4
1984,3,5.1,7.7,12.7,15,18,18,17.2,15.3,13.2,6.9,5
1985,2.9,4.1,7,11.3,15.3,18.1,17.5,17.3,16.1,13,8.1,4
1986,3.4,4.8,7.6,11.2,14.4,17.4,17.9,17.2,15.6,12.6,8.3,5.2
1987,4.4,6.4,8.5,11.8,15.3,18.4,18.4,17.9,17,13.2,9.8,5.1
1988,4.7,6.2,8.5,11.9,16.6,17.8,17.9,17.5,16.2,14.4,9.9,5.8
1989,2.4,5.8,7.4,11.6,15.3,18.1,17.8,17.1,17,14.9,8.2,4.8
1990,4.1,6.3,8,11.1,14.6,17.8,18.3,17.7,16.3,14.1,10.2,5.6
1991,4.6,5.6,9.4,11.7,15.2,18.4,18.2,17.7,17,15.1,9.1,4.9
1992,3.5,4.3,9.1,12,15.4,18,17.8,17.6,16.2,13.3,8.2,3.4
1993,3.1,6,7.6,11,14.7,18.1,18.6,18.3,16.4,14.7,8.3,5
1994,5,6,8,12.2,16.7,18.3,18,17.5,17,12.5,9.2,5
1995,3.8,5.6,8.3,11.9,16.1,18.4,18.1,17.6,16.4,14.4,10.7,4.2
1996,3.5,5.3,9.1,11.3,15.2,17.8,18.5,17.5,16.3,13.9,10.2,5.3
1997,2.8,4.4,8.6,10,15.4,17.6,18.3,17.6,15.2,13.3,9.4,6.7
1998,5.6,6.6,8.7,12.2,16.3,18.5,18.6,18.5,16.2,14.6,10.1,5.8
1999,4.2,6.1,9.4,13,15.8,18.6,18.5,18,16.8,15.4,9.2,4.6
2000,4,6,8.7,12.4,15.9,18,18.7,18.6,17,15.5,8.2,5.8
2001,3.8,5.9,8.2,11.6,15.1,18.4,18.4,18.2,17.6,15.6,9.2,5.4
2002,5,6.3,9,12,15.8,18.3,19.1,17.5,16.2,13.5,10.3,5.5
2003,3.9,6.2,8.6,12.5,16.4,18.4,19,18.6,17.2,15,8,6.3
2004,4.2,5.5,9.6,12.5,15.7,18.1,17.7,18.1,17.3,13,9,5
2005,5.1,8.5,9.3,12.6,16.5,19.2,18.8,18.8,17.1,15.2,9.8,6.6
2006,4.5,7.9,10.1,13,15.4,18.7,18.9,18,16.9,15.1,10.1,6.1
2007,4.8,6.4,9.3,12.4,15.9,18.3,18.9,18.2,16.2,14.6,9.8,6.3
2008,4.8,4.4,9.6,13.4,16.1,18,18.2,18.3,17.1,15.5,9.2,6.6
2009,5,7.9,10,12.9,16,18.4,19,18.5,17.4,15,9.1,5.2
