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