1901,16.8,16.6,16.6,13.3,10.7,6.6,5.6,6.8,10.3,11.8,14.1,16.2
1902,17.7,18.2,14.6,11.7,9.5,8.4,7.1,6.4,9.3,12.8,15.1,17.9
1903,17.8,18.6,18.1,14.3,10.3,6.8,7.5,7,9,11.6,12.5,16.7
1904,16.8,16.5,16.2,13.9,10.7,5.5,6.5,6.7,9.3,12,15.5,16
1905,17.3,17.4,16.6,14.4,11.1,7.1,4.8,6.6,8.3,10.6,14.3,16.2
1906,17.4,17.7,16.4,13.4,10.5,8.8,5.7,6.1,10.3,12.1,13.6,15.6
1907,18,17.2,16.4,12.4,10.6,9.6,4.9,5.3,9.5,13.7,15.7,17.4
1908,16.9,18.1,16.3,15,11.1,5.4,6,6.4,9.2,11.2,15.4,17.9
1909,16.3,16.5,15.9,12.3,9.1,8.9,6.1,8.1,10.2,13.4,15.3,16.4
1910,18.1,16.9,16.7,13.5,11.2,9,6.7,7.6,12.1,12.3,14.3,17.1
1911,18.1,17.6,16.1,12.5,8.6,5.7,6,7.3,9.8,12.4,16.8,18.5
1912,17.8,17.7,16.2,13,8.9,9.9,8.2,7.6,8.5,12.7,15.8,17.4
1913,17.4,17.2,15.1,14.4,10.3,8.1,8,5.7,10.2,13.6,15.2,17.1
1914,18.5,17.6,17.3,13.9,10.1,8.8,6.3,8.6,10.6,12.8,17.9,18.2
1915,17,18.3,15.7,13.3,8.8,7.1,8.5,5.9,11.9,13.7,17,16.5
1916,18.1,18.4,17,14.4,10.1,8.2,8.3,7.6,10.5,12,13.8,15.2
1917,17.9,16.6,15.6,11.8,7.3,6.3,5.9,6.3,9.8,11.9,15.1,15.9
1918,16.9,16,14.5,12,8.8,6.4,4.1,7.8,9,12.8,15.5,16.2
1919,16.9,17.2,16.2,14.3,12.2,8.8,6.8,5.9,9.1,12.8,14.8,17.1
1920,16.2,16.4,15.1,13.2,9.3,7.2,7.6,7,10.5,13.3,15.7,17.5
1921,17.2,16.2,15.8,14.2,10.6,9,8.4,6,8.5,10.3,15.9,15
1922,17,16.7,14.4,14.3,9.1,9.3,4.5,5.8,9.6,13.1,15.3,17.4
1923,17.2,16.5,14.9,14.8,11.4,7.6,6.9,5.7,9.6,12.6,14.2,18
1924,16.8,16.8,15,11.4,9.6,5.8,9.5,8.5,10.9,12.7,15.4,14.9
1925,17.5,17.8,15.5,12.5,10.3,8,4.6,7.9,7.4,11.1,13.9,16.6
1926,16.9,18.1,16.4,12.6,9.6,8.5,5.5,6.9,9.3,13.6,13.7,15.6
1927,17.3,17.1,16,12.7,8.3,7.2,5.3,6.1,9,11.8,15.1,15.9
1928,16.1,17.9,15.6,14.2,8.9,6.3,6.9,8.4,10.1,14,14.8,15.7
1929,18.5,18.1,16.3,12.5,8.4,6.8,4.8,7.4,8.7,12.5,14.2,16.4
1930,17.6,16.1,15.2,12.3,10.7,9.7,8.8,7.4,9,13.7,15.4,15.5
1931,18.7,16.6,16.7,12.7,12,9.8,7.5,8.5,10.4,11.2,15.4,16
1932,17.4,17.4,16.2,14.2,11.2,7.7,6.1,6.4,9.4,12.2,14.7,15.5
1933,17.9,16.5,16.4,12.8,9.5,8,8.5,5.9,10.5,13.1,14.4,15.8
1934,15.8,16.2,15,12.8,10.2,5.9,8.5,8.1,9.5,11.7,14.8,15.1
1935,17.2,17.8,15,11.5,7.8,6.5,6.1,6.7,9.2,13.3,14.3,16.5
1936,16.5,16.1,15.4,11.4,10.2,7,7,7.8,8.3,13.2,14.4,15.6
1937,17.4,17,16.1,12.3,9.9,7,7.3,7.8,9,13.2,14.8,16.1
1938,17.5,17.6,15.9,13.1,13.1,7.7,7.2,6.2,8.9,12.8,16,16.3
1939,17.5,16.5,17,13.6,12,7.5,6.3,5.6,7.5,10.7,13.8,15.6
1940,18.7,17.4,16.4,13,9.4,8.1,5.4,8.4,9.5,12.5,15.2,16.4
1941,17.1,16.4,16.4,12.7,10.8,7.8,5.7,5.2,9.2,12.8,15.4,15.5
1942,18.4,16.8,16.5,13.2,10,9.5,8.1,7.7,9,12.6,14.1,15.5
1943,16.8,16.8,15.1,12.1,10.3,5.2,4.5,6.1,10.2,13.1,14,15.4
1944,17,16.6,14.7,12.4,7.5,8.1,8.4,7.6,9.6,11.1,15.1,16.9
1945,17.4,18,16.2,13.5,10.5,10.8,7.4,8.3,8.7,11.9,14.6,15.7
1946,17.9,18.6,15.8,12,9,5.3,5.6,7.9,8,10.7,15.2,17.3
1947,18.2,18.1,16.9,13,11.6,7.9,4.7,7.3,9.8,11.8,13.7,16.2
1948,15.3,16.9,16.4,11.9,7.9,8.1,5.6,8.1,9.6,11.6,14.5,17.1
1949,16.1,18.3,17.4,12.1,9.5,7.4,5.9,6.6,9.5,14.8,14.7,15.5
1950,17.7,17.9,18,14.9,10.4,9.8,12,8.1,10.1,13.2,14.4,16.3
1951,16.3,16.9,16.4,10.6,7.9,9.8,6.2,5.6,9.3,11.1,14.7,15.9
1952,18.3,16.7,16.1,14.1,10.3,7.9,7.3,7.9,9.7,13.4,15.5,16.2
1953,16.1,17.1,15.2,13.5,8.6,5.8,5.5,6.1,9,12.3,14.2,17.2
1954,16.7,18.1,17.3,14.1,10.3,8.4,8.7,8.2,9.9,12.9,15.1,15.8
1955,16.7,18.3,18.1,15.3,10.6,9.2,6.6,6.3,10,12.3,14.4,15.9
1956,17.3,18,18.7,13.4,9.5,8,5.7,4.9,7.5,11,13.4,16.2
1957,17.1,18.1,15.5,13.7,8.4,9.1,5.7,7.6,8.3,12,15.5,17.4
1958,16.9,17.8,17.4,15.7,11.3,11.8,6.1,8.2,8,12.6,14.9,17.1
1959,17.8,17.2,16.5,13.5,10.8,8.7,8.9,6.1,10.4,11.6,14.9,17
1960,17.1,17.9,14.9,12.6,8.9,6.4,6.9,5.2,8.7,11.7,13.9,14.7
1961,15.5,16.5,15.4,13.5,8.8,7,4.7,6.7,9,13.4,15.3,16.1
1962,17.4,17.1,15.7,13.3,8.2,7.3,7.8,6.1,8.9,11.6,14.8,15.8
1963,17.3,17.6,17.6,13.9,11.8,8.6,5.6,8.4,8.6,11.9,13.6,15
1964,18.3,17.4,16.8,14.3,11.3,7.6,6.7,6.1,10.8,11.2,14.3,15.6
1965,16.8,16.5,15.4,14.1,10.1,9.3,5.8,8.2,10.7,11.7,14.4,16.7
1966,16.2,18.3,15.9,14,9,8.4,5.9,8.2,9.7,12,14.4,16
1967,17.7,17.3,16.4,14,11.1,12.5,7.6,7.2,9.2,14.6,14.2,15.5
1968,18.6,17.6,16.8,14.3,10.8,7.6,6.8,7.2,9.6,12.4,15.6,15.8
1969,18.4,18.1,16.7,12.9,12.9,8.7,9.1,10.1,8.6,13.6,15,17.5
1970,18.4,17.8,16.7,14.3,9.1,7,4.5,7.1,9.9,12.8,15.1,17.8
1971,18.6,19.5,17,13.1,8.8,7.1,5.9,7.8,10.5,13.4,14,16.2
1972,17.7,17.7,16.5,13,12.2,9.9,5.1,8,10.4,13.8,16.3,17.4
1973,19.9,19.4,17.5,14.5,12.2,9.9,11.4,9.9,12.1,15,16.3,17.6
1974,19.8,18.3,17.7,15.1,11.8,8.3,6.1,7.1,9.5,12.7,14.2,17.1
1975,18.2,17.9,18.2,14,10.1,8.7,8.4,8.6,12.2,13.1,15.8,17.5
1976,18.5,18.4,18.7,14.6,12.6,10,9.4,6.4,9.6,11.8,16.1,18.2
1977,17.6,18.8,17.8,14.9,11.6,8.2,6.6,7,10.1,13.5,16.7,17
1978,19.4,18.8,18.1,14.3,11.4,8.5,7.4,8.5,10.8,12.1,15.3,17.1
1979,18.5,18,16.9,15.1,10.3,10.6,6.9,7.7,10.4,12.7,16.8,18.6
1980,19.3,19.3,16.2,14.5,13.5,9.1,7.2,9.3,10.4,15.2,15.8,16.6
1981,17.8,20.4,17,14.6,11.7,8.1,7.6,7.3,11.5,12.1,15.9,18.3
1982,19.6,18.8,18.3,14.3,10.6,6.7,5.8,9.1,10.9,11.7,14.8,17.4
1983,17.6,18,17.8,14.6,13.7,9.6,9.6,9.3,12.9,14.7,15.9,15.9
1984,18.2,17.9,17,13.9,10.1,10.8,9.3,7.2,9.1,13,15.4,17.1
1985,18,18.2,17.7,14.4,12.8,7.5,7.4,7.6,10.4,12.8,16.2,17.7
1986,17.6,18,16.3,14.7,12.9,8.2,9.1,7.5,10.8,13.8,14.5,16.6
1987,20.4,18.6,16.5,15,12.6,10.7,6.6,10.3,10.1,13.2,14.4,17.8
1988,18.9,17.3,15.4,16.1,12.2,9.5,9.6,9.6,12.5,15.3,15.7,18.5
1989,17.7,17.5,18,16.5,14.6,9.8,8.2,6.4,9.8,13.9,15.6,16.7
1990,18,19.2,17,15.6,12.5,9.1,7.4,7.1,10.4,13.9,16.5,19.1
1991,19.3,18.9,16.2,13.2,13.2,9.7,6.4,7.1,9.7,13.7,16.2,16.6
1992,18.8,19.1,16.7,14.8,12.1,7.6,6.7,7.7,9.7,12.2,15.3,16.5
1993,18.6,18.5,16.3,13.5,11.7,7.8,11.7,8.2,10.7,13.4,15.2,15.9
1994,18.9,17.7,16.2,13.6,8.8,7.1,6.5,6.6,8.1,12.1,15.9,16.5
1995,17.9,18.3,16.9,12.9,12.2,9.1,6.1,8.1,10.6,13.3,17,16.5
1996,18.9,17.6,16.4,12,12.5,10.1,6.4,7.5,9.7,13,14.9,16.8
1997,16.8,18.7,17,13.1,11.7,8.4,8.4,6.5,11,13,16.7,18.9
1998,18.6,19.2,17.1,14.9,10.8,9.2,9.4,10.5,12.7,13.3,14.8,16.9
1999,18.3,18.6,17.5,13.1,12.5,9,10.3,9.1,11.7,14.7,14.4,14.9
2000,17.6,16.2,17.5,14.5,11.3,7.8,7,7.4,11.7,13.5,15.2,17.2
2001,17.9,17.5,18.2,14,10.1,8.9,7.5,6.9,9.9,13,15,18.1
2002,18.6,18.8,16.6,14,10,8.1,4.1,7.7,11,13.1,15.4,16.7
2003,17.2,19,16.7,14.2,11.1,9.5,7.8,8.1,10.9,12.8,14.1,17.9
2004,19.3,19.1,17.7,15,9.6,7.9,7.3,7.4,10.2,14.1,15.3,17
2005,18.4,18.8,15.9,15,10.7,10,8.6,7.6,11.1,15.1,16.8,18.4
2006,19.6,19.3,17.3,13.8,9.4,8.1,7.5,7.8,11.2,13.1,14.6,15.3
2007,17.9,17.7,17.2,13.8,12.4,8.3,5.1,8.3,10.6,14.1,15.6,17.2
2008,18.4,17.2,15.6,12,9.4,9.7,7.7,5.8,11.9,12.9,15.6,16.9
2009,18.2,18.4,17.1,14.4,10.9,8.5,7,8.9,10.4,12.7,16.7,17.9
