1901,18.7,16.8,15.3,12,8,5.7,3.7,5.7,8.6,11.1,13.8,16.4
1902,17.1,16.1,15.1,12.6,7.5,4.1,1.9,4.5,6.6,10.3,12.6,16
1903,17.3,15.6,14.2,11.3,8.5,4.9,4,5,7.4,10.8,13.4,15.6
1904,18.2,16.3,15.2,12.1,7.5,4.9,4.5,5.3,7,10.1,13.5,15.6
1905,18.3,16.7,16.6,11.5,5.2,5,2.9,4.3,7.6,10.2,13.4,15.5
1906,17.9,17.2,15.9,11.9,8.3,2.8,2.3,5.1,7.6,11.5,13.8,15.7
1907,16.4,16.6,14.3,10.6,6.9,3,3.7,4.7,6.7,10.1,12.9,13.6
1908,16.6,16.4,14.9,9.6,7.1,5,3.5,4.4,6.5,11.1,12.6,14.4
1909,16.6,15.6,14.4,10.7,6.3,3.2,2.8,4.3,6.9,10.4,12,14.8
1910,16,16,14.6,10,6.9,2.9,3.9,5.1,8.2,11.7,13.7,16.7
1911,16.1,15.2,14.4,9.6,6.9,5.1,4.3,4.4,7.2,11,13.4,15.9
1912,18.1,15.7,14.8,11.5,5.6,4.4,4.6,4.7,7.8,11,12.2,15.2
1913,17.9,16,14.9,10.5,6.1,3.9,3,4.5,9.1,10.5,13.2,15.9
1914,16.6,17.3,15.3,10.8,7.7,3.3,4,4.7,6.9,10.7,11.6,15.9
1915,16.6,16.6,15.9,10.3,6,3.9,4.7,5.3,8.5,11.6,13.8,15.7
1916,17.3,17.2,14.6,11.4,8.3,4.3,3.6,5.8,7.8,11.3,13.5,15.5
1917,16.5,17.5,14.7,11.9,7.9,5.3,4.8,5.2,8.1,11.9,14.7,15.6
1918,16.5,17.8,14.7,11.1,6.1,4.8,2.8,4.8,7,11.5,12.3,16.7
1919,16.9,17.2,16.4,10.5,7.9,4.9,4.3,6.4,7.2,10.6,11.8,16.2
1920,17.1,17.2,14.3,12.3,7.3,4.9,3.2,6.6,8.1,9.7,13.3,15.7
1921,16.9,16.2,15.1,11.9,6.5,4.3,4.5,4.8,7.6,11,14,15.7
1922,16.2,16.5,14.3,11.3,8.4,3.9,4.8,5.7,8.3,10.8,13.6,16.5
1923,17,17,14.4,10.1,8.1,3.9,2.1,3.8,7.3,9.7,12.8,14.6
1924,16.9,16.1,14.8,11.8,7.7,5.4,4,6,8,12,13.2,15.8
1925,16.3,16,14.8,10.7,7.4,4.3,4,5.5,8.6,10.6,13.1,16.1
1926,16.6,17.3,13.8,10.3,7.9,4.9,2.6,5.8,7.4,9.6,13,16.1
1927,16.6,16.9,15.5,12,7.5,4.7,4,5.5,6.9,11.1,13.2,15.6
1928,16.1,15.9,14.1,10.9,7.7,3.4,3.4,6.5,9.2,12,13.4,14.8
1929,17.4,17.5,15,12.2,8,5.5,4.7,5.5,7.5,10.9,12.6,14.3
1930,16.7,17.3,14,12,7.4,5.8,2.5,4.6,9,10.2,14.5,15.2
1931,18,18.2,15.5,12,8,6.5,3.6,6.4,8.3,10.9,13.5,16.3
1932,17,17.6,14.6,11.5,8.5,5.6,5,5.7,7.9,11.7,13.3,15.4
1933,17.1,15.5,13.6,11.8,8.6,5.5,4.2,6.9,9,10.7,12.6,14.5
1934,16.6,15.7,14.4,12.6,8.2,4.4,5.1,7.5,9.8,11.7,14.3,16
1935,17.3,16,15.3,12.3,10.2,6.5,5.3,7.8,7.9,10.5,13.1,13.9
1936,16.7,18.7,15.6,12.4,7.7,5.3,6.5,6.7,8.5,11.3,15.5,13.9
1937,19,15.6,14.3,12.5,7.9,6.1,4.9,4.6,8.9,12.9,12.6,17.5
1938,15.6,17.6,14.3,12.3,8.7,5.4,4.4,6.1,8,11,13,16.1
1939,15.5,16.4,14.9,11.4,7.8,6.2,5.9,6.8,8.8,10.5,12.8,18.1
1940,16.5,18,14.2,10.7,8.6,6.8,6.5,7.1,9.1,11.7,13.9,15.1
1941,18.6,18.1,16.5,9.9,6.8,6.3,5.8,7.8,8.4,12.3,11.8,15.2
1942,16.8,16.1,13.9,12.3,7.9,5.4,4.4,5.6,8.8,11.4,14.5,17.4
1943,18.4,17.5,14.4,14.4,10,5.2,5.4,6,8.6,11.4,14.3,19.2
1944,18.3,18.3,17.7,14,9,5.7,5.2,4.9,8.3,10,14.5,17.4
1945,19.8,19,16.3,12.2,8.9,6.3,3.9,5.9,9.6,11.6,13.1,15.5
1946,16.1,14.8,15.4,13.4,8.4,6.9,6,7,8.3,11.2,12.2,15.4
1947,15,16.6,15.1,12.4,8.7,6.8,5.2,6.6,8.2,12.9,16.5,15.2
1948,16.9,17.2,14.3,12.2,9.4,6.2,4.3,4.5,8.8,12,14.7,14.9
1949,18.6,16.7,13.4,12.6,7.6,5.3,5.5,6.2,9,13.6,14.8,15.6
1950,17.8,17.4,15.1,11.1,6.5,5.7,5.5,5.3,7.2,10.6,13,15
1951,17.4,15.9,15,12.7,9.5,6.6,4.8,6.7,6.6,11,12.5,17.5
1952,18.1,19,14.5,13.7,8.7,4.4,5.9,5.8,10,12.6,15.4,18.6
1953,18.2,19.9,15.3,13.2,10,6.5,5,6.8,7.7,11.2,14.4,18.4
1954,16.9,17.2,17.3,12.7,8.7,6.8,5.1,6.9,8.2,11.3,15,16.7
1955,19.4,16.5,15.6,12,7.8,4.7,3.6,5.8,8.4,12.5,16.6,15
1956,15.3,17.7,14.6,10.4,7,5.6,6,7.1,8,12.8,16.8,18.5
1957,17.6,19.3,16.4,12.5,8.9,5.6,4.4,6,9.1,11.1,15.8,15.3
1958,17.7,16.8,17.7,11.3,7.7,5.6,7.4,5.2,8.3,14.3,13.5,16.5
1959,17.8,18.4,15.1,9.6,8.6,6.5,5,5.7,8,11.4,14.7,18.3
1960,20,19.4,17,11.9,9.4,5.1,3.7,6.9,9,11,14.2,16.2
1961,15.4,16.1,14.4,10.9,8.6,4,5.2,7.1,7.4,11.4,13.4,16.6
1962,17.7,19.6,16.6,11.5,8.4,6.6,5.2,7,9,14.1,15,17.3
1963,17.1,20,13.9,11.2,8.4,5.1,5.3,6.2,6.5,12.1,11.1,16.2
1964,18.2,14.6,14.4,11.6,8.4,3.4,5,5.5,7.6,13.6,14.5,15
1965,16.8,14.4,17,11.1,6.3,8.1,3,5.6,7.1,10.2,13.7,13.9
1966,17.3,15.4,14.6,12,10,5.2,3.5,6.4,7.9,9.9,14.9,14.4
1967,16.1,16.4,15.5,13.1,8.2,3.9,4.6,4.3,8,10.4,13.9,16.9
1968,17.9,14.6,14.2,13.1,10.7,5.5,6.3,7.3,8.6,9.5,13.8,13.7
1969,17.9,15.4,15.7,12.7,8.1,5.8,5.1,5.4,7.1,9.6,13.6,18
1970,16.2,17.7,15.5,12,7.8,4.6,5.7,4.9,9.5,11.9,13.8,13.3
1971,13.4,15.2,14.1,10.9,8.4,3.3,5.3,5.5,8.5,12.6,12.7,12.2
1972,17.1,16.9,12.7,13.9,5.4,4.3,3.2,4.9,7.1,9,14.9,17.6
1973,15.5,17.1,16,11.1,8.3,5.6,2.4,5.8,8.4,10.9,14.2,15.8
1974,14.6,16.8,13.9,12.7,6.3,4.2,4.8,6.1,8.9,12.4,14.5,15.7
1975,20.8,15.5,15.2,11,9.2,6.8,3.8,5.2,8.4,11.1,11.5,14
1976,14.9,17.1,14.1,12,9.4,3.3,3.1,5.3,8.8,10.7,13.6,14.6
1977,16.2,17.2,15.5,12.2,8.7,5,4.2,5.6,8.9,11.6,12.3,18
1978,16.3,18,15.7,14.5,9,5,5.6,6.1,8.5,9.6,14.2,18
1979,20.8,18.2,16.3,13.7,8.8,7.1,5.7,6.3,7.1,10.3,13.2,17
1980,18.5,16,15.6,8.3,7.6,5.4,4.3,6.4,9.7,12.7,13.2,15.8
1981,16.7,17.2,15.6,12.1,7.3,6.2,5.4,6.5,7.5,12.4,13.8,16.9
1982,19.5,16,15.3,13.9,9.1,2.5,3.1,6.2,8.8,9.1,13.2,18.2
1983,19.5,16.7,15.4,11.3,8,3.9,3.8,6.9,7.3,12.7,15.4,19.8
1984,17.7,15.4,15.3,11.1,5.4,2.2,2,5.3,9.7,9.2,14.3,16.3
1985,18.6,17.2,12.9,9.9,7.8,7.2,6.1,7.1,9.1,11,16.6,16.8
1986,16.4,16,13.9,9.9,7.2,5,5.1,5.4,8.4,13,12.4,17
1987,18.7,18.8,15.5,11.7,7.3,7,5.7,5.1,8.1,11.8,15.4,15.7
1988,16.7,20.4,15.1,11.6,8.1,6.2,3.6,4.7,9,10.4,14.2,14.9
1989,17.7,18.9,15.4,11.4,8.8,6.6,5.7,5.5,9.3,13.7,14.7,15.1
1990,16.7,19.2,15.6,9.7,7.8,6.2,5.9,7.7,8.5,11.9,14.1,16
1991,16.7,18,15.1,11.7,8.1,5.5,4.2,5,8.6,10.9,14.2,14.1
1992,18.5,15.7,16.1,11,5.8,3.6,3.1,6.6,8.4,9.7,15.1,15.4
1993,18,18.3,15.9,11.6,7.1,5.4,3.7,6.6,8.8,11.7,13.3,15.8
1994,18.1,16.5,16.1,11.1,9.3,6.9,4.8,5.7,8.1,11.3,13.8,16.5
1995,16,17.3,14.3,12.5,9.3,4.7,3.3,3.1,8.3,10.8,13.7,19.2
1996,16.6,16.2,15.2,11,9.1,6.1,5.9,7.1,10.2,10.6,13.4,15.2
1997,16.6,14.9,15.6,12.6,9,6.9,5.8,5.4,7.7,10.2,13,15.2
1998,15.4,19,14.5,11.2,11.1,6.4,6.8,6.8,8.2,10.7,13.7,16.5
1999,19.6,16.8,14.3,11.4,8.6,3.6,3.4,6.8,8.8,12.6,14.8,16
2000,17.6,15.9,14.2,11.9,7.8,4.7,3.5,5.5,6.6,11.8,12.6,14.5
2001,16.1,17.1,13.8,11.3,7,5.6,2.9,7.4,8.3,11.1,13.2,18.9
2002,18.7,17.7,12.4,10.3,7.5,3.7,6.3,6.6,7.6,9.8,12.5,16.3
2003,16.4,16.4,16.9,11,9,6.5,5.4,7.1,8.4,11.2,12.8,13.2
2004,17.2,19.7,16.3,9.8,8,6.9,4.3,6.8,8.4,10.4,14.5,15.8
2005,16.6,21.2,13.6,10.8,5.8,3.8,5.7,4.5,8.8,10.5,13,16.8
2006,17.1,18.4,13.9,12,8.5,6.8,4.5,6.4,8.8,10.2,13.5,14.1
2007,18,16,15,11.6,7.2,4.3,3.4,4.5,8.6,10.2,12.6,17
2008,20,20.1,17,11.6,7.3,5.4,5.2,4.5,8,11.9,15.2,19.4
2009,19.8,17.1,15.6,13.6,7,6.3,5.1,6.6,9.2,10.1,9.9,14.9
