1901,16.7,15.4,13.7,12,8.7,5.8,4,5.9,7.3,10.7,14.9,16.2
1902,16.3,15.4,15.9,13.4,8.1,5.3,3.8,6.3,8.4,10.4,12.6,14.3
1903,17.3,15.3,13.4,9.8,7.8,6.5,3.7,5.2,7,9.3,12.3,13.7
1904,15.2,14.8,14.4,12.4,6.4,5.4,4,5.8,7.1,10,13.4,16
1905,15.8,14.6,14,11.6,8.8,4.2,3.8,3.6,5.5,8.5,12.9,16
1906,17.9,17.5,14.6,12.5,8.5,5.6,5,5.1,5.5,10.2,11.2,15.8
1907,14.2,16.9,14.4,10.5,7.2,5.6,4.6,5.3,7.5,9.8,10.7,13.3
1908,16,14.8,13,10.3,6.4,2.8,3.2,3.5,5.6,9.1,12.9,16.2
1909,15.8,14.9,13.7,9.6,6.5,5.3,2.4,5,6.7,10.2,12.3,15.2
1910,16.3,16.7,14,12.1,8.1,5,4.1,5.2,7.6,7.7,11.6,13.5
1911,16.7,14.1,13.3,10.9,5.8,4.8,4.7,4.7,6.1,9.7,14.2,13.9
1912,17,18.5,15.9,11.3,8.2,4.4,4.7,5.1,6.1,10.6,11.6,15.8
1913,14.9,15.8,13.8,11.7,6.4,5,4.9,5.4,7.7,10.6,13.2,14.4
1914,16.5,16.4,14.5,10,7.1,4.5,4.7,7,8.8,13.9,13.5,15.6
1915,16,16.2,13,11.2,8.6,7.6,5.3,5.1,5.7,9.7,13.5,14.6
1916,15.4,15.6,14.6,8.9,7.7,4.6,3,4.4,9.7,9.5,12.1,13.3
1917,15.6,13.7,13.7,10.2,4.6,4.7,5.1,3.8,5.8,8.1,11.4,13.5
1918,16.2,16.1,13.4,11.8,7.4,5.6,4.5,4.8,8.3,9.8,13.9,14.5
1919,16.1,15.9,15.5,11,6.8,6.2,6.4,5.7,5.7,9.2,11.8,14.7
1920,15.3,15.9,14.6,9.6,6.7,4.9,2.3,4.3,8,10.2,12.8,14.4
1921,15.1,17.6,14.9,10.8,9.5,5.7,4.8,5.1,6.5,9.7,12.1,14
1922,15.2,16,14.7,11.6,6.5,5,2.7,5.6,7.2,9.7,13.7,12.5
1923,15.6,17.4,15.1,13,7,5.6,4.2,4.5,6.1,9.6,13.4,14.5
1924,14.4,13.6,12.4,11.6,7.6,5.1,3.9,4.2,7.7,8.7,12,14.7
1925,14.2,14.2,15.5,11.5,8.1,4,2.9,4.5,6.6,8.7,15.4,15.7
1926,16.2,15,13.2,11,6.1,4,5,4.1,6.5,11.1,13,14
1927,13.6,14.4,14.1,10.9,5.3,5.6,4.1,6.1,8.6,11.4,13.8,16
1928,13.9,13.8,13.7,11.2,6.8,5.1,3.3,5.2,7.4,9.7,13.7,15.1
1929,14.1,15.7,12.1,9.7,7.6,4.6,2.6,5,7.2,9.9,12.4,14.1
1930,16.4,16.5,16.4,10.8,8.2,7.5,3.6,6.2,8.3,9.7,13.4,15.3
1931,15.6,13.6,14.3,11.1,6.4,3.3,5.6,5.7,5.8,9,11.9,16.8
1932,18.5,15.2,13.1,10.4,8.6,4.2,5.3,4.8,7.3,9.8,13.1,15
1933,14.7,17.5,14.7,10.5,7,6.1,3.8,5.2,8.4,9.9,12.6,15.4
1934,18.5,17.7,16.2,10.9,9.7,5.5,4.1,5.9,7.4,8.8,11.1,14.6
1935,15.5,14.6,14.3,10.5,7.4,4.2,3.6,5.4,6.3,8.7,13.8,14.8
1936,16.2,15.8,15.9,11.3,6.3,4.2,3.9,6.1,8.2,9.5,14.8,16.3
1937,16,15.8,15.5,11.7,7.8,4.2,2.4,4.5,7.7,11.7,13.9,14.9
1938,15.3,15,15.2,12.1,7.9,4.8,5.4,5.5,9.1,11,15.1,17
1939,17.6,16.5,14.2,12.2,8.1,4.6,5.4,5.1,8.4,10.9,12.4,16.2
1940,16,15.9,16.1,9.2,6.3,6.2,4.5,6.1,8.2,11.7,12.5,14.9
1941,16,15.4,13.2,12.3,7.8,6.9,5.5,6.6,6.9,9.1,13,15.8
1942,15.6,15.1,14.7,11.5,9.5,5.3,3.9,5.8,6.2,8.8,12.1,15.7
1943,16.4,15.1,16.1,11.6,8.6,6.4,2.2,4.2,7.1,10.1,12.6,15.1
1944,17,15,14.9,11.1,6.7,5.3,5.9,6.7,8.4,11.2,15.2,14.3
1945,16.3,15.7,15.5,15.2,9.9,8.4,4.6,6.9,7.6,10.4,13.1,16
1946,15.8,14,13.6,11.8,8.9,5.8,6.7,5.3,9.1,11.3,12.4,16.5
1947,17.7,18,15.2,12.2,9.8,7.9,5.3,5.4,7.1,10,12.5,15.3
1948,17.4,16.8,15.4,10.6,6.2,5.2,5.1,6.5,7.9,10.6,11.8,14.9
1949,16.8,15.1,13.8,12,7.7,5.9,7.6,7.5,8,10,13,17.1
1950,16.9,15.6,14.6,13.2,11.6,5.5,4.4,6.1,8.3,9.8,13.1,16.5
1951,18,16.7,16.1,11.8,8.2,8.5,5.1,3.4,8.5,10.4,14.2,15.5
1952,16.6,15.5,14.2,11.4,7,7,3.1,5.4,7,9.3,12,13.5
1953,16.1,15.6,17.3,13.8,9.7,6.2,4.2,5,7,9.9,12,15.1
1954,17.9,15,15.6,9.7,7,5.1,6.1,5.3,8.1,11.1,12.8,16.1
1955,17.2,18.6,15.3,11.3,7.1,6.1,4.6,5.8,7.8,8.7,11.6,13.7
1956,16.8,17.8,15,10,8.6,4.6,5.1,2.3,6.4,9,12.6,14.7
1957,17.7,15.2,14.5,11.2,7.4,9.6,2.9,5.6,7,11.3,14.4,16.4
1958,17.7,17,15.2,13,9.7,7,5.7,5.8,6.8,9.2,12.7,16.1
1959,17.7,16.1,15.8,13.5,10.4,7.9,5.4,6.1,8.4,10.9,13.1,13.4
1960,16.1,16.2,14.7,9.5,6.9,4.3,5.2,4.2,6.4,10.4,11.8,15.5
1961,18.3,16.9,16.6,11.8,7.7,6.2,4.5,5.6,9.3,10.6,12.5,15.4
1962,17,16.5,14.7,12.5,8.9,7.7,4.4,5.4,6.6,9.7,13.8,16
1963,16.8,16.6,15.5,11.9,9.9,6.1,6.4,5.1,7.4,11.4,13.3,15.4
1964,17,15.5,14.4,11.1,6.9,9.1,6.2,5.1,6.5,7.8,12.8,13.7
1965,16.6,17.3,15.5,12.9,8.2,7.7,5.9,5.5,7.1,12,13.3,17
1966,17.1,16.8,14.9,12.8,7.3,5.5,5.1,4.7,6.6,10,13.7,14.1
1967,16.4,16.1,13.5,14.1,9.1,6.8,4.6,4.6,7.7,12.4,13.6,15.8
1968,17.8,17.1,14.6,11.6,6.5,8.3,4.7,3.2,5.9,10,12.1,14.8
1969,17.8,16.6,14.2,12.2,9,5.4,3.9,5.7,6.6,11.9,14.1,14.7
1970,16.5,17.5,15.3,10.4,7.9,7.2,4.2,4.9,7.1,10.4,13,16.4
1971,17.9,17.2,16.2,11.5,7,5.4,4.3,5.3,6.8,9.7,11.3,13.4
1972,16.4,16.7,15.4,11.5,9.3,7.2,5.3,5.5,8.1,10.6,14.1,18.7
1973,17.8,17.1,15.7,13.6,10.2,6,6.3,5.7,6.7,10.5,13.2,15.3
1974,17.5,15.3,16.5,11.7,9.2,6.3,6.3,5.4,8.4,9.9,12.4,15.4
1975,15.1,19,13.9,12.5,7.5,5,5.7,4.5,7.5,9.3,13.6,15.2
1976,16.1,17.1,15.1,11.6,8.4,4.4,4.4,5.6,7.7,11,11.1,16.5
1977,16.8,17.2,14,11.8,7.5,6.6,4.9,6.8,7.3,11.1,13.5,18
1978,17.6,17.8,16,13.8,8,5.2,6,6.1,7,10.7,13.4,15.4
1979,17.4,17.5,16.5,12.2,7.2,5.4,5,5.7,7.1,10.4,14.4,16.4
1980,17.8,16.7,17.1,12.3,10.1,6.7,5.6,5.1,8.7,8.2,15.8,16.1
1981,16.8,15,14.5,14.9,9.1,4.5,4,5.5,9.3,11,12.2,14.6
1982,17.1,16.9,13.7,12.1,8.6,4.4,2.7,8.7,8.2,10.8,15.5,16.9
1983,17.7,18.4,15.4,11.8,8.3,7.4,3.7,7.2,9.4,11.9,13.4,16.5
1984,16.5,15.8,14,12.9,9.1,4.7,5.6,5.7,6.7,11.6,13,15.1
1985,16.9,19.1,16.5,11.5,7.4,6,6.1,6.3,8.4,10.1,14.2,14
1986,17.3,16.4,15.8,11.3,8.5,6.7,3.6,3.9,7.8,8.6,12.9,14.1
1987,16.4,15.1,14,13,6.2,6.4,4.7,4.9,8,10.8,12.3,16.2
1988,16.1,15.4,15.5,12.7,9.9,7.2,4.4,5.8,8.5,11.4,12.2,14.8
1989,16.2,17,15.1,12.7,8.6,5.8,4.1,3.9,7.8,9.7,14.2,15.9
1990,16.8,15.9,16.7,12.1,10.5,4.3,4,5.6,8.4,11.4,13.6,15.1
1991,17.7,17.6,14.7,13.1,9.7,7.7,5.9,5.7,8.2,12.7,12.8,16
1992,17,17,17.4,13.4,8.8,7,5.2,5.2,6.3,9.8,11.5,13.9
1993,17.8,15.9,14.5,13,8.3,5.6,4.4,4.7,7.6,8.6,14.3,14.4
1994,16.1,15.5,15.3,11.9,8.9,4.6,5,6.2,8.1,10.8,13.5,16.3
1995,17.6,16.9,13.8,10.4,7.1,5.8,5.2,5.7,8.2,10.8,12.1,14.8
1996,15.5,16.8,14.6,11.8,8.5,5.8,5.8,4.4,8,10.3,13.7,14.7
1997,16.9,18.4,15,13.8,9.5,6,3,4.9,8.3,10.8,12.9,16.4
1998,17.6,16.8,15.7,12.1,11,6,5,7.2,7.8,9.6,13.6,15.9
1999,18.5,16.9,15.7,12.2,10.2,5.6,5.9,5.3,8.9,9.2,12.2,14.6
2000,16.2,16.7,14,11.1,6.2,5,6,4.7,8.3,10.5,13.7,16.4
2001,19.1,15.7,13.5,12,8.9,4.8,4.6,5.2,8,9,12.3,13.1
2002,15.6,14.2,15.1,13.4,10,5.5,5.5,5.3,6.9,10.6,13.6,15.5
2003,16.5,18.3,16.4,13.4,8.9,5.2,4.8,5.7,7.8,10.2,14,15.6
2004,16.7,17.9,14,11.9,7.2,6.3,4.9,4.8,7.3,12.2,13.3,16
2005,15.9,17.5,17.2,13.5,11.1,6.9,4,5.9,8,9.9,12.4,14.7
2006,16.8,15.7,14.8,10.3,7.8,3.5,3.9,6.2,9.3,11.7,15.5,15.3
2007,16.5,17.9,14.1,12.9,7.2,4.7,6.9,6.3,8.3,10.9,14.2,14.2
2008,17.2,16,15.5,11.7,9.6,6.5,4.9,4.8,8.6,11.7,11.7,15.6
2009,18.4,16.9,14.5,11.8,7.5,5.7,5,6.6,6.3,11.8,14.2,16.5
