1901,23.7,22.4,20,15.9,10.4,8.7,6.8,9.3,12.7,17,19.2,22.2
1902,23.1,22.1,19.5,17,10.8,6.4,4.6,8,11.1,16.2,18.7,22.1
1903,23.4,21.8,18.9,15.3,11.4,6.8,6.5,8.4,12.3,16.3,19.2,21.8
1904,24.7,22.6,19.8,16.6,10.6,7.9,6.3,9,12.8,16.3,19.3,22
1905,24.1,21.7,21.1,15.9,8.3,6.2,5,7.9,12.2,15.6,19.7,21.3
1906,24,22.9,19.8,15.1,9.8,4.7,5.4,9.2,12.1,17.6,19.7,20.5
1907,23.1,22.8,19.3,15.4,10.1,5,6.6,7.9,10.9,15.9,18.9,19.9
1908,22.7,22.3,19.8,14.1,10,7.5,6.2,7.8,11.9,16.1,17.5,20.9
1909,22.9,21.7,19.3,15.7,9.4,5.9,5.7,8.6,12.1,16.1,17.9,20.1
1910,21.2,21.7,19.1,14,9.9,5.9,5.9,8.6,12.8,17.8,19.7,23.1
1911,22.2,20.8,19.2,13.8,9.5,7.3,6.9,8.2,11.5,16.7,18.8,22.4
1912,24.3,21.4,19.6,16.1,9.1,6.9,8.1,8.5,13.2,16.8,18.4,21.9
1913,24,22,19.8,14.7,8.3,6.2,5.6,7.5,13.6,16.8,18.5,22.2
1914,22.4,22.9,20.1,14.7,10.2,5.7,6.3,8,11.2,16.6,16.6,22.3
1915,22.3,22.2,20.5,13.5,8.6,5.6,7.7,9.1,13,17,18.6,21.5
1916,23.4,22.9,19.1,16,11.2,5.9,6,9,12.6,17.3,19,21.9
1917,22.8,23.6,19.6,16.1,10.5,7.7,7.6,8.5,13.2,18,20.3,22.3
1918,22.7,24,19.7,15.9,8.6,6.8,5.4,8.1,11.5,17.4,18.5,23
1919,23.9,23,20.5,14.4,10.4,6.9,7,9.2,11.9,16.3,18.1,22.3
1920,23,23.2,19.3,16.9,10,7,6.1,10.2,12.9,15.7,19.3,22.1
1921,22.7,22,19.7,16.2,9.6,6.4,6.8,8.4,12.1,16.5,19.7,22.5
1922,22.2,22,18.9,15.6,10.9,5.7,7.7,9.2,13.2,16.3,19.7,22.7
1923,23.1,23,19.3,14.4,10.7,6.6,4.4,7,11.8,14.8,18.2,21
1924,23.3,21.8,19.5,15.6,9.8,7.9,6,9,12.2,17.5,18.5,22.3
1925,22.2,22.1,19.8,15.2,9.9,5.9,6.1,8.8,12.6,16.5,19.3,22.1
1926,22.8,22.8,18.6,14.2,10.3,6.6,5.6,9.3,11.8,15.2,18.6,22.6
1927,22.4,23.4,20.5,16.7,10,6.7,6.4,9.2,11.5,17,19,21.8
1928,22.2,21.3,18.9,15.1,10.3,5.6,6.6,9.9,13.9,17.7,19.3,20.9
1929,23.4,22.6,19.7,16.7,10.5,7.6,7.5,9,12.5,16.9,18.8,21
1930,23,22.7,18.8,16.3,10.3,6.9,4.8,7.5,13.5,15.9,20.1,21.9
1931,23.6,23.5,19.5,14.8,9.9,7.6,6.7,10.1,12.1,17.3,18.6,22
1932,22.1,21.9,19.4,15,11.4,6.8,7.3,8.4,12.7,16.3,18.9,19.9
1933,20.8,20.2,18.1,16.7,11.5,7.4,7.2,9.8,13.4,15.6,17.5,18.9
1934,22.9,19.5,18.2,16.5,10.6,5.8,8.5,10.5,12.9,17.4,17.8,20.8
1935,22.4,20.7,20.7,15.8,12.7,9.2,6.8,9.8,11.1,15.3,18.6,20
1936,21.8,23.2,19.7,15.3,8.5,6.8,8.7,9.2,12.6,16.2,20.3,22.4
1937,24.3,21.4,19,15.9,9.8,7.2,7.1,7.5,13.5,17.1,18,22.3
1938,20.5,23.7,19.4,16,11.6,7.9,7.5,8.9,11.9,17.2,18.1,22.2
1939,21.8,22.4,18.9,14.2,7.8,7.1,7.6,7.5,12.6,15.5,17.7,21.8
1940,22.5,22.9,18.9,14.5,10.8,8.2,9,9.6,13.1,17.2,19.4,21.3
1941,23.8,22.8,19.2,13.2,9.1,8.9,8.6,9.9,12.3,17,17.4,20.1
1942,22.7,22.9,17.3,15.3,9.2,7.1,6.8,8.5,12.3,17.1,20.3,24.3
1943,23.6,23.1,19,17,12.3,7.1,7.8,7.7,13,17.5,20.2,25
1944,22.7,22.6,22.1,16.3,12.6,5.7,7.3,8.1,12.5,15.7,19.5,22.9
1945,25.4,24.1,20.8,15.7,10.4,7.2,6.4,9.2,13.1,18.2,18.2,21.2
1946,21.8,20.5,18.7,16.2,9.9,7,7.6,8.6,11.5,17.4,18.1,21.4
1947,20.8,21.6,18.7,16,10.6,8.7,8.1,9.9,12.9,18.7,22.1,21.2
1948,21.3,22.3,18.9,16.9,11.9,9.7,6.2,7.5,12.9,17.3,20.3,20.9
1949,24.3,21.5,18.5,16.4,9.8,7.9,8.1,9.8,13.3,17.7,20.9,21.4
1950,22.7,23.3,20.3,15.5,9.5,9.2,9.2,7.5,11.2,15.8,17,20
1951,22.8,21.9,19,16.8,10.7,6.3,6.9,10.9,10.6,15.8,17.5,22.6
1952,23.5,23.4,17.8,16.5,10.6,5.3,8.5,8.8,14.3,17.4,20.4,23.6
1953,23.3,25.4,19.6,15.4,11.4,7.6,6.7,9.5,11.8,15.6,18.9,24.2
1954,22.5,22.9,21,15,9.8,5.6,6.8,9.1,11.5,16.3,19.6,21.7
1955,23.7,21.4,19.9,14.9,10.1,5.7,5.3,9.1,12.2,17.6,21.1,20.4
1956,20.6,22.4,19.4,12.9,9.1,8.4,8.6,10.6,12.3,18.6,22.8,23.3
1957,23.3,23.9,21,15.8,10.1,7.3,6.5,7.6,12.7,15.8,20.9,22.1
1958,24.1,20.9,21.3,15.2,9.4,6.4,9.7,9.2,12.3,19.5,18.6,21.9
1959,23.1,23.6,18.9,13,9.3,6.3,8,10.9,13.7,19,21.6,25.3
1960,25.3,24.3,20.6,15.6,12.1,5.2,7.1,9.8,12.6,16.4,20.2,21.4
1961,22.1,22.1,19.1,14.1,11.1,5.4,4.5,8.4,10.6,17,19.4,21.7
1962,22.9,23.8,20.9,15.1,10.9,8.2,8.3,8.9,12.9,19,19.3,22.6
1963,22.3,24.9,18.6,14.4,10.2,7.2,7.5,7.1,9.3,15.7,16.9,22.7
1964,24.8,20.3,18.3,15.4,10.5,4.7,7.9,8.6,11.3,18,19.2,20.8
1965,23.1,20.9,21,14.1,8.5,9,4.3,9.2,12.5,16.6,19.8,19.5
1966,23.4,20.2,20,16.5,12.3,6.8,5.6,9,12.2,15.2,19.9,21.3
1967,22,21.7,19.8,16.7,11,6.2,7.2,7.3,12.6,14.8,20.2,22.8
1968,23.5,21,19.2,16.9,13.2,8.5,9.2,10.9,12.5,15.7,21,19.3
1969,23.3,21.9,20.6,16.5,10.9,7.7,7,9.7,11.7,15.4,19.1,23.6
1970,21.9,24.2,19.2,15.8,10.7,7.2,8.4,8.6,14.2,17.6,19.4,20
1971,19.6,20.9,18.5,14.9,10.2,5.1,7.1,9.1,13.5,17.8,19.8,19.2
1972,22.5,22.1,18,17.5,7.7,5.7,6.7,7.1,12.8,14.7,20.8,23.7
1973,21.6,23.5,20.1,14.5,9.8,7.3,4.5,9.6,12.7,17.4,20,22.3
1974,21.7,21.6,20,16.5,9.1,6.8,7.9,9.1,13.4,16.5,18.6,22.1
1975,24.8,22.6,20,15.8,10.9,8.4,6.6,8.7,13.2,17.9,17.6,20.9
1976,21.8,22,17.1,15.5,11.9,5.3,7,9.5,13,15.7,19.1,18.2
1977,22.3,21.4,19.5,16.9,11.4,8,4.8,8.2,12.8,16.6,18.7,24.1
1978,23.4,23.8,20.4,16.9,10,7.1,6.8,9.6,13,15.9,18.8,23.1
1979,25.4,23.9,20.6,17,10.1,8.8,8.6,8.8,11.2,16,17.7,23.5
1980,24.1,21.8,20.4,11.8,10.6,7.3,6.1,9.1,13.8,17.7,18.9,21.6
1981,22.6,23.3,19,15.3,10.1,6.9,8.2,10.1,11.9,17.9,18.9,21.9
1982,25.2,22.4,19.6,17.7,11.6,4.6,4,8.5,12,14.9,18.5,24.4
1983,25.3,22.5,19.4,15.4,10.4,6.6,8,9.8,12.5,17.4,21.6,24.4
1984,24.4,21.5,19.1,15.7,7,3.2,3.6,8.2,13.3,16.4,20,20.6
1985,24.5,23.3,18.4,14.3,10.1,7.2,8.3,10.6,13.9,15.3,21.8,22.7
1986,22.6,21.7,18.2,14.3,9.8,7.2,8.6,9.5,12.9,16.6,17.9,22.8
1987,24.5,23.5,21,16.4,10.1,9.4,6.8,7.5,11.9,16.9,20.6,22.3
1988,22.2,24.4,20.5,14.6,10.9,8.3,7.4,7.2,13.6,15.7,20.4,21.5
1989,23.5,24.6,19.5,15.7,11.7,8.4,8.8,8.5,13.1,19,20.6,22.3
1990,23,24.9,20.6,13.9,10.8,9.5,10,10.8,12.4,18.4,20.1,22.6
1991,23.8,24,20,16.1,11.5,6.6,6.1,8.6,12.5,16.8,19.7,19.4
1992,25.2,21.6,20.1,15.5,10.7,5.6,5.6,10,12.8,15.8,19.7,21.8
1993,23.7,24.2,20.9,15.2,9.7,6.2,7.2,11.5,14.1,18,19.7,22.5
1994,24.6,22.1,20.3,15.3,11.1,7.8,6.8,9.6,12.6,15.9,18.9,22.9
1995,21.7,21.9,19,16.2,11.4,5.7,5.8,5.7,13.2,16.2,20.2,25.6
1996,21.9,21.4,20.4,15.5,13.1,6,8.8,10,15.5,16.9,20,21.1
1997,23.6,21,19.8,16,10.2,7,7.2,9.2,10.4,15.5,18.2,20.6
1998,22.9,22.4,19.9,15.3,11.1,8.3,11.2,11.3,12.7,17.9,20.3,22.8
1999,25,23.3,18.6,16.5,11.1,6.7,7.5,10.3,12.4,18.6,20.8,23.1
2000,24.5,21.1,18.8,16.8,10.4,6.1,5.9,8.3,9.3,16.9,17.7,20.7
2001,22.7,23.4,18.7,15.6,9.6,7.7,3.8,9.6,12.2,17.2,19.8,24.7
2002,24.1,23.8,16.3,14.8,8.7,4.4,8.1,8.3,11.3,15.6,18.3,23
2003,22.4,22.4,20.4,15.1,12,7.7,9.4,10.2,13,16.6,18.4,19.5
2004,23.7,25.1,21.4,14.9,10.6,9.7,7.1,10.1,13.6,16.6,19.6,22.5
2005,23.1,25.3,19.1,16.2,9,5.8,7.7,7.3,14,15.8,18.3,21.5
2006,23.3,23,19.6,16.3,12.3,7.9,7.1,8.8,12.9,16.4,19.3,21.4
2007,23.5,21.8,19.4,16.6,10.1,6.7,6.4,9,13.1,16.7,18.7,23.1
2008,25.4,26,22.1,15.5,10,7.9,8,7.5,13.6,17.7,21.2,24.5
2009,24.9,23,20.5,16.9,11.5,9.1,8.1,10,13.5,16.3,16.8,21.2
