1901,17.7,17.6,15.8,13,9.4,8.1,5.8,7.4,9.6,11.8,13.9,15.4
1902,17.9,18.2,16.3,12.8,9.2,7.2,6,6.9,8.6,11.1,14,15.3
1903,17.3,18,16.1,12,9.2,7.2,6.2,7,9,12.9,15.1,17.2
1904,18.9,18.4,16.3,13,9.5,6.9,7.2,6.9,8.7,11.2,13.5,14.7
1905,17.3,18.3,17.4,14.3,10.1,7.6,6.8,7.4,9.7,12.1,14.9,17
1906,17.7,17.3,15.6,12.8,9.9,7.8,6.6,8,9.3,12.4,14.7,17.2
1907,18.4,19,17,14.9,10,8.9,8.2,9.1,10.4,13,16.2,19.9
1908,20.1,19.4,17.1,14.5,10.9,9.2,6.6,7.7,10.4,12.8,15.9,16.6
1909,18.8,18.5,17.5,14.6,11.1,9.3,7.5,9.1,10.1,13.1,15.6,18.2
1910,20.2,20.4,17.9,13.8,11.6,8.7,7.5,9.3,11.1,13.3,16,16.5
1911,18,17.9,18.8,15.1,10.9,8.2,7.4,9,10.3,12.6,15.2,16.5
1912,19,17.7,16.1,13.4,9.1,7.7,6.4,7.5,10.3,12.1,14.7,17.1
1913,20.4,20,18.4,12.9,9,7.6,6.8,7.7,10.9,12.6,14.4,15.7
1914,21.8,19.4,17.4,13.7,8.9,7,6.5,7.8,10.6,14,15.2,16.7
1915,21.4,20.9,16.8,14.3,10.7,8.3,8.3,8.9,11.8,14.5,15.7,18.7
1916,20.2,19.7,17.7,15.3,11.1,9.4,8.4,8.3,11.7,13.4,16.2,18.9
1917,19.8,19.5,17.3,14.5,10.7,7.6,7.4,7.8,11.5,13.8,14.9,16.6
1918,18,17,16.2,14.6,9.9,7.4,5.8,7.8,9.6,12.2,14.2,15.9
1919,18.5,19.3,16.9,13.4,9.7,7.4,6.9,7.6,9.6,13.3,14.6,16.3
1920,18.5,18.8,17.5,13.6,9.3,8.2,7.8,7.8,10.1,13,15.5,18.6
1921,19.4,18.8,17.6,13,10.4,8.9,7.8,8.9,10.9,13.4,14.9,17.4
1922,18.2,18.7,16.3,13,9.5,7,6.6,8.5,10.1,14.1,15.9,16.8
1923,17.7,17.3,15.7,12.6,9.5,6.4,5.6,6.9,9.3,11.7,15.1,17.5
1924,20,19.6,16.9,14.8,8.8,7,6.4,7.3,10.1,12.5,15.5,15.4
1925,18.1,17.6,15.2,12.8,9.5,7.1,6.6,7,8.4,12.5,13.5,16.8
1926,18.6,16.1,15,13.7,10.2,6.4,6.5,6.6,9.3,12.4,13.4,15.2
1927,18.2,18.8,15.8,11.7,9.3,5.9,6.1,6.6,9.4,12.4,13.6,14.9
1928,18.2,19.5,17.5,14.9,10.5,6.6,6.6,7.3,9.4,12.3,13.8,16.3
1929,18,17.7,16.7,12.2,9.4,8.1,5.2,6.7,9,12.5,14.5,15.4
1930,16.9,17.7,16.1,13.3,9,6.3,4.8,7.3,8.4,10.5,12.7,16
1931,18.5,15.5,14.9,12.1,8.3,6,5.8,6.8,7.5,12.4,16,16.6
1932,17.8,16.9,15.7,12.7,8.4,6.5,4.5,6.1,9,13.4,14.9,16.4
1933,19,19.2,16.9,13.4,8.9,6,5.9,7.3,9.3,11.8,13.9,16.9
1934,16.6,17.1,15.3,12.6,8.3,6.5,5.4,7.1,9.1,12.5,15.9,19.3
1935,21.2,20.1,16.7,13.5,8.9,7,5.5,6.9,7.9,12.6,12.5,17.9
1936,18.3,17.1,14.3,13.4,7.7,6.4,5.5,7.8,8.8,13.3,15,15.5
1937,17,16.2,15.3,11.9,9.4,5.8,5.5,7.1,8.5,12,15.9,18.3
1938,19.9,20.5,18.5,15.6,10.4,7.5,5.4,7.4,9.7,12.8,15.6,15.1
1939,17.3,17.8,16.5,13,9.8,8.2,4.3,7.4,9.7,11.4,14.7,16.8
1940,19.3,17.6,15.2,10.8,7.4,6.4,5.7,8.1,10,11.5,13.6,17.8
1941,19.2,18.9,17.1,11.4,9.6,5.5,5.9,6.2,8.7,10.6,14.4,15.4
1942,16.5,16.7,15.9,13.6,9.8,7.2,6.5,7.7,9.7,13.6,14.8,16.4
1943,17.9,18.5,16.3,13.3,8.2,7.9,6.2,6.9,9.1,11.4,14.9,18
1944,19.3,18.7,16,13.5,8.7,6.6,6.3,7.5,9.4,12.5,14.9,15.5
1945,18.6,18.6,16.1,12.9,8,5.7,5.8,8.1,9,10.6,15.9,14.8
1946,18.3,20,16.3,13,10.4,7.2,7.6,7.3,10,11.5,12.4,15.2
1947,16.8,17.8,15.9,13,9.5,7.2,6.8,7.5,10,12.1,14.8,17.6
1948,20.1,19.2,18.6,13.2,9.5,6.5,7.2,7.7,11,12.4,14.5,17
1949,17.3,19.9,16,11.4,9.4,7.7,7.5,7.8,9.4,13.5,15.3,16.9
1950,19.7,18,16.2,12.6,11.9,7.5,6.7,7.5,10.5,13,15.6,17.8
1951,18.4,18.7,17.1,13.4,9.4,7,6.6,6.8,10.3,12.2,14.6,14.7
1952,18.3,19.1,16.2,13.8,9.9,7.3,6.3,7.9,10.2,13.6,14.1,16.4
1953,17,17.2,16.4,12.2,9.9,7.3,7.1,8.3,10.5,12.1,16.1,17.3
1954,19.6,20.2,16.6,12.2,11.1,7.8,6.2,7.4,10,12.7,15.8,16.4
1955,19.3,20.6,17.5,14.2,11.3,6.7,6.6,8.3,10,13.2,15.3,17.6
1956,20.4,18.6,16.2,16.3,11,8.3,6.3,7.5,10.4,12.9,15.6,16.8
1957,19.8,20.4,18.4,14.5,10,8.4,5.9,8.4,10.5,10.9,15,15.9
1958,18.7,20.2,18.3,12.3,9.9,7.7,6.3,7.6,9.3,13.4,16.5,17.2
1959,19.6,18.6,16.6,12.4,7.5,6.5,6.5,8.2,10.5,11,15,17.5
1960,19.2,18.7,15.2,13.1,10.9,7.8,6.9,7.6,9.7,13.4,14.2,15.2
1961,18.2,18.2,15.4,13.1,10,7.2,6.3,7.1,9.4,14.8,15.8,19
1962,20.5,19.7,16.8,14.2,12,7.9,7.6,8.5,10,13.7,15.2,16.4
1963,19.5,19.9,17.1,12.4,10.2,7.3,6.2,6.9,9.5,13.4,13.7,16
1964,17.4,19.7,16.7,13.6,9.8,7.6,6.9,7.2,8.9,12,14.8,17.4
1965,19.8,17.2,15.5,12.9,9.5,6.9,5.3,6.9,10,11.3,13.6,16.4
1966,18.5,20.5,17.5,13.7,9.1,7.1,6,6.6,9.8,12.1,13.9,15.7
1967,17.8,18.3,17.2,13.6,9.2,7,7,9.5,9,13.6,14.7,16.9
1968,18.6,19.5,20.4,12.9,10.6,7.6,6.2,8,8.7,11.4,14,15.2
1969,19,18.1,16.9,12.5,10.1,5.9,5.6,7.5,11.5,11.9,16.4,19.2
1970,20.9,19.3,18.4,14.2,9.1,8.1,7.6,8.4,10.4,12.9,16.2,18.1
1971,19.5,19.8,17.5,14.7,11.5,9.4,7.7,9.5,10.1,12.3,15.9,17.6
1972,18.5,18.7,17.6,13.7,9.3,5.8,7.3,7.2,10.2,13.2,17,15.3
1973,19.9,21.1,17.5,13.4,10.9,8.4,6.6,8.9,10.7,13.3,17.4,18.6
1974,19.4,23,15.8,14.2,10.2,7.4,7.2,7.2,10.4,12.4,16.2,18.5
1975,20.4,20.2,18.1,14.1,10.4,6.7,6.2,7.7,9.3,12.8,14,16.6
1976,18.2,16.2,17.1,13.1,8.9,6.2,5.9,8.1,8.9,11,14,16.6
1977,17.6,19.2,17.6,13,7.9,7,7,7.7,7.4,11.6,13.9,16
1978,19.9,20.8,18.7,15.5,10,6.9,6.9,8,10.1,11.8,15.1,16.9
1979,20.2,18.4,17.1,13.4,9.7,8,7.3,7.9,10.3,12,16.3,17.8
1980,19.7,19.2,15.7,12.8,10.3,7.8,6.1,7.2,10.8,13.4,14,15.8
1981,20.1,19.4,18.7,14.8,10.7,8.3,6.8,6.5,8.8,12.2,15.1,18.2
1982,19.6,20.5,16.7,12.4,10.5,7.3,6.4,7.8,9.6,10.7,16.2,15.9
1983,17.5,17.9,17,13.2,9.3,7.5,7.1,7.9,9.9,12.4,14.5,15.4
1984,17.3,18.3,17.5,14.1,9.4,8.5,8.5,9.3,10.2,12.2,16.2,18.9
1985,20.5,19.5,17.5,13.8,10.9,9.1,7.8,7.9,10.5,12,14.8,18.7
1986,20.6,19.6,17.5,14.5,11.1,7.4,6.2,7.7,9.3,12.8,14.8,17.2
1987,20.3,18.3,15.5,13.6,10.1,7.6,7.1,9.9,9.9,13.2,15.3,16.9
1988,19.9,19.2,16.2,13.4,10.9,8.6,7.2,8.3,10.5,13.7,16,18.5
1989,19.4,19.3,17.7,14.4,10.4,8.4,7.1,8.8,12,13.6,16.1,16.6
1990,19.1,21.5,18.3,14.1,9.8,7.3,6.8,8.3,8.9,12.9,15.6,17.9
1991,19.4,19.5,17.3,12,9.3,5.7,6.8,8.4,9.9,11.8,12.6,15.7
1992,18.3,18.1,15.5,10.6,7.9,6.9,7.2,6.4,7.8,11,15.1,15
1993,17.6,17,15.1,11.8,9.9,8,6.7,7.1,7.6,12.6,13.3,15.6
1994,19.8,19.6,16.3,13.5,10,7.5,6.1,7.9,8.3,11.4,14.4,17.6
1995,19.2,19.4,17.6,14.8,10.4,7.5,6.4,7.3,9.7,12.1,14.3,18.3
1996,19.1,18.8,15.9,14.3,9.1,7,7.1,7.4,10.6,12.4,14.1,16.6
1997,17.3,19.2,16,12.4,11,7.2,6.2,7.8,8.8,12.2,15.6,17.2
1998,19.8,21.6,19.1,14.7,10.1,7.9,8.7,8,10.5,14.5,14.9,17.3
1999,20.3,19.6,18.4,14.1,11.4,8.3,7.6,7.8,10,12.1,16.1,15.6
2000,18.2,19.1,16.1,14.2,10.2,8.1,8.3,7.7,9.9,12.7,13.6,17.7
2001,17.9,19,16.3,12.8,10.9,7.6,5.6,8.4,9.9,13.3,14.7,17.7
2002,18.5,17.6,17.9,12.8,10.5,9.3,7.4,8.3,11.3,12.4,14.7,17.9
2003,19.2,20.1,17.9,14.6,11.6,9.5,6.3,8.2,10.6,12.3,15,16.7
2004,19,18.3,14.8,12.9,10.2,8.8,5.5,6.5,8.5,11.5,14.2,14.2
2005,19.5,21.1,18.1,13.3,11.9,8,8.3,8.6,10.8,12.5,14.9,18.9
2006,19.6,19.3,16.2,15.1,10.4,6.6,7.2,7.9,10.9,12.5,15.5,14.9
2007,19.1,19.1,18.2,13.1,11.8,7.9,7.9,8.6,10,12.4,14.4,17.7
2008,20.1,19.5,17.7,14.6,9.1,8.2,7.6,8.1,10.3,12.7,15.2,18
2009,19.6,20.3,16.5,13.5,9,6.7,6.6,9.3,10,11.2,15,17.1
