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