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