1901,16.8,16.4,14,13.1,9.3,6.3,4.3,6.1,7.9,9.8,12.9,15.1
1902,15.5,15.2,16.8,11.6,9.2,6.3,5.1,6.4,7,8.5,11.7,13.9
1903,17.4,17.5,13.5,11.3,9.7,8,6,6,7.1,9.5,13.1,15.1
1904,17.6,16.1,16.8,12.3,8.2,7.4,5.9,6.9,7.8,9.4,12.8,16
1905,16.2,16.4,14.4,12.5,11.3,6.8,5.2,4.8,6.5,8.9,12.7,17
1906,18.3,17.2,15.9,13.4,9.9,9.1,5.7,7,6,10.2,12.6,16.8
1907,17.7,17.7,16.1,12.2,9.4,7.5,7.1,7.9,7.9,9.5,11.3,14.4
1908,16.3,16.1,14.1,12.5,8.8,5.3,5.1,5,6.1,9,12.7,16.6
1909,17.1,17,15.3,11.8,8.7,7.4,3.9,6.2,7.6,8.7,11.7,17
1910,17.5,19,15.8,13.8,10,7.3,6.4,6.8,8.1,7.7,12,14.8
1911,17.1,16.9,14.6,12.1,8.3,5.9,6.5,5.6,6.9,9.6,12.7,14.9
1912,18.6,18.5,15.6,13.6,10.1,7.4,6.7,7,7.3,9.7,12.4,16
1913,17,17.3,15.7,13.4,8.3,8,6.4,6.8,7.1,9.5,12.2,14.9
1914,17.9,17,15.8,11.1,8.5,7.3,5.9,7.4,8.2,12.3,14,16.6
1915,18.9,18.2,14.9,14,10.4,10.2,7.3,7.3,7,10,14.2,17.7
1916,17.2,17.3,15.4,11.8,10.4,7.6,4.9,7,9.1,9.2,13.2,15.3
1917,17.5,15.9,14.9,12.8,7.7,7.1,7.5,5.5,7.8,9.6,13,15.1
1918,19.4,18.4,15.1,14.7,10.2,9.4,5.4,6.2,8.6,10,13.8,15.8
1919,17.2,16,17.3,13.3,9.2,8,8,6.8,6.2,9.2,12.9,15
1920,18.9,16.9,15.1,12.6,9.3,7.6,4.5,6.2,7.4,10.1,14.1,15.9
1921,17.6,20.6,16.8,13.2,11.6,8.2,7.6,6.6,6.4,9.4,12.3,17.2
1922,16.7,17.2,16,12.1,8,6.7,4.4,7,6.9,10.1,12.9,13.9
1923,16.2,17.9,16.8,14.4,10.7,7.6,6.5,6.5,6.8,9.1,12.5,15.2
1924,15.8,16.1,14.1,13.3,9.2,7.4,5.8,4.9,7.3,8.4,12,15.3
1925,16.1,15.7,16.7,11.7,9.4,7.5,4.1,4,6.5,8.1,15.6,16.5
1926,18.3,17.7,15.2,11.9,9,6,7.1,5.1,6.7,9.6,14.7,15.3
1927,16.1,15.2,14.7,13,7.8,6.5,5.5,6.7,8.3,9.4,12.7,16.9
1928,16.8,15.5,15.4,12.4,8,7.4,5.5,6.7,7.7,8.5,13.6,15.6
1929,16.5,17.3,15.9,11.9,10.5,7.1,4.9,6,6.7,8.6,12.8,14.9
1930,17.2,17.9,17.9,13.4,10.3,11.6,6.5,7.3,8.4,9.5,12.6,15
1931,16.5,15.5,15.8,12.4,7.9,4.9,7.8,6.9,7,10.3,12.9,18.1
1932,19.5,17.8,15.1,12.6,11.1,6.4,7.7,6.2,6.7,10.3,12.5,15
1933,17.5,18.7,16.5,12,9.1,9,4.2,5.9,7.4,9,13.8,16.3
1934,18.9,19.6,17.8,11.7,10.6,7.1,4.9,6.3,7.1,8,11.3,14.9
1935,17.2,16,15.4,11.5,9.4,6.6,5,5.3,5.7,7.4,11.6,14.6
1936,17.6,16.8,17.5,12.1,8.3,7,5.4,7.3,8.7,9,15.1,16.8
1937,17.2,17.2,15.6,13,9.5,6.2,3.7,5,6.3,9.8,14,15.2
1938,16.5,16.1,15.7,13.8,10.4,6.6,7,7,9.3,9.8,14.5,16.2
1939,15.6,17.8,16.7,12,10,7.2,6.1,7,7.4,10.9,13.3,15.9
1940,16.2,17.8,15.6,11.1,8.5,9.2,6,6.6,8.5,10.7,13.5,15.5
1941,18.2,18.1,14,12.1,9.9,9.6,7.4,6.7,7.5,9.5,13.3,17.1
1942,17.6,17.4,15.5,13.1,9.6,7.8,4.8,7.7,6.6,8.8,12.7,16.4
1943,16.6,17.1,17.7,12.8,9.4,8.8,4.9,5.3,7.4,9.5,13.8,15.8
1944,18.7,16.6,15.3,12.6,7.8,6.6,7.4,6.8,7.6,10.7,13.5,13.2
1945,16.8,18.6,16.1,15.3,11.2,10.5,6.6,8.3,6.8,9.1,12.6,15.4
1946,16.2,16.1,14.8,12.6,10.8,7.8,8.3,5.4,7.9,10.1,11.7,15
1947,16.6,18.8,16.3,13.1,9,9.8,5.9,5.3,6.5,9.2,12.4,14.5
1948,17.8,19.4,18.3,12.2,8.2,7.2,6.6,7.5,7.5,9.9,11.9,14.1
1949,19,18,15.6,13.2,8.7,9.5,9.5,8.8,7.1,8.9,13.5,16.8
1950,18.8,16.8,16.7,13.9,11.5,7,6.3,6.6,6.9,8.7,10.8,14.8
1951,16.2,18,16.4,12.9,8.8,8.2,6.3,5.2,8,10.2,12.2,14.7
1952,17.9,18,15.6,13.4,9.1,8.5,4.8,6.1,7.4,9.6,11.6,13.4
1953,17.7,16.5,17.5,13.5,10.6,7.8,6.8,5.6,7.2,9.3,11.6,14.5
1954,18.6,17.1,15,10.2,8.7,6.2,6.7,5.8,8.3,10.9,10.5,15.3
1955,18.3,21,17.1,12.6,9.2,6.1,4.1,6.8,7.3,8.1,11.7,14.2
1956,18.4,17.7,15.8,9.9,9,5.2,5.3,3.9,7.4,8.7,13.8,16.4
1957,20.2,17,16,12.9,10.1,9.8,3.6,6,6.4,10.7,13.3,16.5
1958,19.6,17.6,16.1,11.7,10.7,7.6,6.1,5.2,6.6,9.3,13.3,18
1959,18,17.8,17.4,13.9,11.3,9.3,7.4,6.9,7.3,9.6,13.3,13.9
1960,15.4,17.9,14.3,10.5,7.7,6.9,6.4,5,6.7,10.2,13,17
1961,20.6,18.4,16.7,11.1,9.5,7.8,5.9,5.6,8.1,10.6,13,16.9
1962,20.5,19.1,14.7,13.7,11.8,9.8,5.8,6.8,6.8,9,13.8,17.5
1963,18.7,18.7,18,13.1,11.6,8.2,7.4,7.3,8.6,11.5,13.9,16.5
1964,18,17.2,17.7,12,8.8,10,8.1,7.3,6.9,8.4,12.2,14.8
1965,18.9,18,17.2,14.6,9.9,8.9,6.6,7,7.6,11.3,13.2,16.7
1966,18.5,17.1,15.9,13.4,9.2,7.4,6.3,5.4,6.2,9.7,14,15.5
1967,18.2,19.7,15.1,14.5,10.7,9.5,6.1,6,7.8,12.7,13.3,16.2
1968,19.5,17.7,13.8,11.2,7,8.5,6.2,5,6.6,9.3,11.9,15.3
1969,16.5,17.1,14.9,12.8,9.6,7.9,4.7,5.4,7.3,13,14.9,16.2
1970,17,18.7,17.3,11.8,9.1,8.9,6.3,6.6,7.5,11.1,12.6,17.2
1971,17.8,17.2,16.8,11.9,8.9,7,6.5,6.3,7.3,8.8,10.5,14.9
1972,18.2,20.1,16.8,12.3,11.2,8.7,6.9,6.9,7.7,10.3,15.7,19.1
1973,18.7,17,15.9,12.9,10.6,7.2,7.6,6.7,6.8,10.3,14.2,15.9
1974,19.6,17.1,18.3,12.5,9.8,7.5,7.3,7,8.8,9.3,11.8,17
1975,17,20.9,15.8,12.9,9.6,7.7,6.9,6.1,7.3,10.2,12.4,16.6
1976,18.2,19.9,17.7,14.1,10.9,7.5,7.5,7.3,8.5,11.7,11.6,15.8
1977,18,19.7,15.7,13.3,9.3,9.2,7.4,8.6,7.3,11,14,18.7
1978,20,20,18.2,16.1,9.6,7.7,7.2,6.7,6.7,10.5,14.1,16.6
1979,18.1,18.8,17.8,13,8.9,8.1,6.7,5.9,7.3,11.3,13.9,17.7
1980,20.3,19.1,18.5,11.6,11.2,7.9,6.9,7.1,8.9,8.4,13.5,16
1981,19.1,16.1,16.4,15.4,10.9,6.3,6.8,7.1,8.9,10.6,11.8,15.7
1982,17.7,18.7,15.3,13.7,10.7,7.2,5.7,8.5,8.2,11.9,16,16.6
1983,19.5,17.3,18.3,12.7,11.2,10,6.1,9.1,9.7,11.3,13.5,17.1
1984,17.8,18.8,15.3,14,11.2,7.4,6.5,6.1,7.5,10.7,12.8,14
1985,17.2,22.3,18.3,12.7,9.9,8.7,7.9,7.7,8.4,10.4,14.8,13.8
1986,19.7,17.5,17,12,10.2,9.1,5.6,5.4,7.9,7.9,14.3,15.6
1987,16.8,18.8,17.1,14.2,8.4,9.6,7.4,7.2,8.3,11.5,13,17.2
1988,16.8,19.3,18.6,14.4,10.7,9.7,7,7.7,8.7,10.3,12.9,15.8
1989,18.8,19,16.6,14.3,10.9,6.9,5.6,5.7,8.1,8.9,14.3,15.6
1990,17.9,18,18.1,13.2,10.3,5.9,5.9,6.9,8,10.1,13.2,15.7
1991,18.7,19.5,17.2,14.4,11.5,9.7,7.4,7.6,7.9,11.3,11.5,16.9
1992,19.5,18.3,17.4,14.5,9.2,9.2,8.1,7.1,6.9,10.2,12.5,15.6
1993,18.6,17.8,15.8,13.8,9.8,7.5,6.7,6.4,7.5,8.5,14.4,16.6
1994,17.6,16.6,17.8,14,11.6,7.7,7.8,7.7,9,10.6,14.1,16.9
1995,19.1,19,17.8,13,9.5,7.4,7.4,6.8,8.5,10.7,12.8,15.7
1996,17.7,19.6,16.1,13.8,10.8,9.4,8.2,6.6,7.9,10.4,13.9,15.2
1997,19.5,19.8,16.3,15.3,10.8,8.5,4.9,6.6,8.1,11.1,12.8,17.4
1998,18.7,18.5,18.4,14.1,13.4,8,6.1,9.1,7.6,10.4,14.2,16.6
1999,19,19.5,16.8,14.7,12.6,8.2,7.2,6.9,8.2,10,14,18
2000,18.4,18.7,16.6,13.5,8.2,8.3,8,6.4,8.5,11,13.5,17.9
2001,19,17.4,15.2,14.1,10.9,6.9,6.6,6.8,7.3,9.4,14,14.8
2002,18,16.3,17.1,13.8,12.2,8.6,8.1,6.2,6.7,10.2,14.4,17.5
2003,18.2,18.6,18.7,14.9,12.3,7.4,6.2,6.5,7.3,9.9,14.3,15.5
2004,18.7,19.9,16.2,13.9,10,9.8,6.2,5.6,7.1,11.6,13.3,17.1
2005,17.3,17.1,18.5,13.9,13.3,8,6.5,6.5,8.5,10.1,12.3,13.3
2006,18.5,18.8,17.4,11.3,10.5,6.4,5.1,8.1,9,11.5,15,17.5
2007,17.2,17.8,16.6,12.6,9.7,7.5,8.3,7.1,7.8,10.6,13.5,16.3
2008,20.3,20.2,17.4,12.7,10.2,7.6,6.2,5.8,8.5,11.6,11.9,15.8
2009,19.7,19.1,16,13.8,10,7.7,6.4,7.4,7,10.7,13.6,17.6
