1901,12.2,12.1,10.7,8.6,5.3,4.8,2.4,3.6,5.7,7.3,8.7,10.5
1902,12.3,12.8,11.5,8.5,5.2,3.9,2.4,3,4.5,6.3,8.7,10.3
1903,11.7,12.5,10.9,7.7,5.6,3.8,2.9,3.4,5.2,8.4,10.1,12
1904,13.1,12.8,11.3,8.4,5.6,3.7,3.7,3.2,5,6.7,8.5,9.5
1905,11.8,12.8,11.4,8.9,6,4,3.2,3.2,5.2,7,9.7,11.2
1906,11.8,12.1,10.5,7.8,5.8,3.7,3.2,3.5,4.9,7.4,8.8,11.4
1907,12.3,13,12.1,10.1,6.8,4.8,4.2,5,6,7.7,10.3,13.3
1908,13.5,13.2,12.3,8.9,6.7,4.8,3.1,3.9,5.8,7.5,10,10.6
1909,12.6,12.7,11.9,9.3,6.8,4.9,4,4.4,6,7.8,10.4,12.3
1910,14,14.3,12.4,8.5,6.7,4.6,3.4,4.6,6,8.4,10.7,11.6
1911,12.2,12.2,13.2,10.7,7.4,5.1,3.9,5.1,5.9,7.7,10,11.3
1912,13.3,12.4,11.5,9.1,5.4,4.5,3.3,3.5,6.2,7.4,10.1,11.3
1913,14.5,14.3,13,8.8,5.5,4,3.3,4.1,6.7,7.9,9.4,10.4
1914,15.1,14.3,12.4,9.5,5.5,4,3.1,3.9,5.6,8.4,9.7,11.2
1915,14.9,14.8,12,9.3,6.9,5.1,4.6,4.9,7.7,9.5,10.9,13.1
1916,14.7,14,12.7,10.6,7.8,5.2,5,4.9,7.1,8.8,11.3,13.5
1917,14.2,13.9,11.5,10.2,7,4.2,4.3,4.4,7.1,8.7,9.5,11.1
1918,12.5,12.4,11.7,10,6.3,4.4,2.5,4.3,5.3,7.5,9.3,10.3
1919,12.9,13.7,11.5,8.7,5.3,4.1,3.4,4.1,5,7.7,9.1,10.3
1920,12.8,13.8,12.5,9.5,6,5.1,3.8,4,5.6,8.1,10.6,12.8
1921,13,13.3,12.4,8.5,6.6,5.5,4.3,5.1,6.5,8.7,10.2,12.4
1922,13.4,13.6,12,8.7,6.6,3.3,3.2,4.5,5.2,8.9,10.4,11.8
1923,12.5,12.3,10.6,7.8,5.8,3.6,2.6,3.1,5.1,7.3,9.6,11.4
1924,13.5,13.7,12.2,10.4,5.5,4.1,2.6,3.3,5.9,7.6,9.7,10.1
1925,11.8,12.3,9.8,7.8,5.7,4,2.9,3.1,4.6,7.6,8.3,11.1
1926,12.8,10.8,9.6,9,6.8,2.6,3.2,3.1,4.9,8,8.4,9.9
1927,12.7,13.2,11,7.5,5.5,2.8,3.1,2.8,5.1,7.3,8.7,9.8
1928,12.1,13.8,12.4,10.9,7.3,3.6,3.3,3.6,5.4,7.3,8.7,11
1929,12.6,11.9,11.8,8.1,5.2,5,1.7,2.9,4.1,6.9,9.7,10.7
1930,11.2,12.1,10,8.6,4.6,3.1,1.6,3.6,3.9,6,7.7,10.1
1931,13,10,10.2,8,4.1,2.7,2.8,2.9,3.5,6.7,10.7,10.8
1932,11.7,12.2,10.5,8.6,4.6,3.1,0.9,1.8,4.2,8.2,9.2,10.7
1933,13.2,14.4,11.5,8.8,5.6,2.8,2.6,3.2,4.7,6.6,8.5,11.1
1934,11,11.9,10.3,7.9,4.6,3.1,1.6,3.3,4.7,7.1,9.9,13.4
1935,14.9,14.7,11.5,9.5,4.9,3.8,2.4,3.4,3.5,7.5,7.6,12.4
1936,12.6,12.4,10,9,3.9,2.7,2,4.3,4.4,8.4,9.7,10.1
1937,11.9,11,10.8,7.4,5.8,2.5,2,2.9,4.3,6.2,10,12.3
1938,13.6,15.9,13,11.9,6.9,4,2.4,3.7,5.2,7.6,10.6,10.2
1939,11.6,12,10.9,8.2,5.7,5,1.2,3.6,5.1,6.5,9.2,11
1940,13.7,12.9,9.9,6.4,4.1,3,2,4.1,5.4,6.6,8,11.9
1941,13.5,12.8,11.8,7.2,5.4,2.4,2,2.5,4,6,9.1,10.5
1942,11.2,11.7,10.9,9.5,6.2,3.1,3.4,4,5.1,8.1,9.4,10.5
1943,12.3,13.4,10.6,8.3,4.5,4.4,2.7,2.6,4.8,6.6,9.6,12.1
1944,12.7,13.1,11.5,9.5,4.7,3.3,2.6,3.6,5.1,7.8,9.3,10.1
1945,13,13.2,11.1,8.5,4.6,2.4,2,4.5,4.8,5.9,10.3,9.3
1946,12.1,12.9,11.4,9,7.1,4.3,4.3,4.2,5.6,6.8,7.2,10
1947,11,11.9,10.6,8.6,5.8,4,3.2,3.6,5,7.5,8.6,11.8
1948,13.5,13.1,12.7,9,6.1,3.3,3.9,3.6,6,7.4,9.2,11.1
1949,11.7,14.4,10.7,6.8,5.6,4.4,4.3,4.1,4.6,8.3,9.4,11.2
1950,13.1,12.1,10.7,8.3,7.7,4.1,3,3.2,5.3,7.6,10.5,11.9
1951,12.4,12.8,11.5,8.9,5.1,2.5,2.6,2.9,5.2,7.8,10.2,9.9
1952,12.4,13.9,10.7,9,6,4.5,2.1,4,5.4,7.8,9.8,11.3
1953,11.5,12.3,11.3,8.6,6.2,4.3,2.9,3.6,6.1,7.1,11.1,12
1954,12.7,14.5,12.4,8.5,6.4,4.5,2.9,3.8,4.9,6.5,11.1,11.7
1955,13,15.8,12.4,9.5,7.1,3.4,2.4,4.7,5.9,8,9.8,11.6
1956,15.2,13.4,10.6,12.2,7.2,4.9,3.2,3.8,5.5,8.4,10.4,11.6
1957,13.3,15,12.7,9.8,7,4.5,2.3,4.6,5.5,6.8,10.2,11.2
1958,12.8,15.1,12.9,8,6.8,3.9,2.8,3.8,4.4,8.7,10.3,12.9
1959,13.9,13.3,11.9,8.2,4.3,3,2.8,3.9,5.9,6.7,9.8,12.1
1960,13.7,13.7,10.6,8.2,6.5,4.1,2.9,3.2,6,8.1,9.4,10.2
1961,12.6,13.2,11,8.1,5.4,3.9,3,3.2,5.2,8.8,10.3,12.5
1962,14.7,13.5,11.8,9.3,7.8,5,3.9,4.7,5.5,9.1,9.9,11
1963,13.2,14.9,11.7,7.7,5.7,4.1,2.8,2.8,5.4,7.6,8.9,10.8
1964,12.1,12.8,11.8,8.3,5.4,3.6,4.1,4.1,5.1,7,9.8,11.9
1965,14.2,12.4,11.2,8.3,5.6,3.4,1.8,3.8,5.6,6.5,9,11
1966,13.1,15.2,12,8.8,4.8,3.1,2.6,2.5,4.9,6.4,8.9,10.9
1967,12.4,12.6,12,8.7,5.6,2.6,2.4,5.7,4.7,8.4,10.4,12
1968,12.8,13.3,14.5,9.7,6.4,4.6,2.9,4.2,4.7,7.4,8.9,10.5
1969,12.9,12.6,11.5,8.3,6,2.3,1.6,3.7,6.9,6.6,10,13.4
1970,14.6,12.9,13.1,9.7,5,4.3,4,4.3,7,8.7,10.7,11.9
1971,13.9,14.9,11.6,9.6,7.2,6.1,3.4,5.3,6.1,8,10.3,12
1972,13,12.5,12.8,9.6,5.5,2.3,3.9,2.8,6.2,8.5,12,10.4
1973,13.6,13.7,12.4,9.4,7.2,4.5,2.7,4.3,6.6,8.3,11.5,12.2
1974,12.7,15.5,10.3,9.7,6.1,4.2,4.4,3.5,6.7,8.1,10.6,12.9
1975,14.7,15.1,13.3,9.5,7.5,3.1,2.7,4.2,5.6,8.5,9.4,11.4
1976,13.5,11.1,11.9,8.9,5,3.3,3,4.7,5.2,7.3,8.8,11.9
1977,12.9,13.1,12.3,8.6,4.5,4.1,3.4,4.3,4,7.1,8.9,10.8
1978,13.8,14.9,12.7,11,6,3.6,3.7,4,5.7,6.4,10,11.8
1979,14.3,13.5,13.2,9,6.1,4.4,3.6,4,6.5,8.1,10.8,12.5
1980,14.1,14.1,11.3,8.3,6.4,3.8,2.9,3.9,6.6,8.6,9.7,11.2
1981,14.7,14.6,13.8,10.4,6,5.3,3.8,3.4,5.8,7.7,9.9,13.5
1982,14.1,14.3,11.5,7.7,6.2,3.1,2.6,3.6,5.2,6.3,11.9,11
1983,12.3,12.5,12.3,9.2,6.2,4.2,2.9,4.1,6.3,8.7,9.6,11.1
1984,11.6,12.9,12.8,9.1,5.7,4.9,4.3,5.5,5.9,7.6,11.4,13.5
1985,14.9,13.5,11.9,8.9,6.3,5.5,4.6,3.8,6.3,6.7,9.4,13.4
1986,15.2,14.3,11.7,9.5,6.3,3.8,2.6,3.8,5.4,8.9,9.8,12
1987,14.3,12.8,11,9.2,6,4.1,3.5,5.3,6.1,8.5,10.5,12.5
1988,13.2,15.2,11.6,8.3,6.8,5.4,4.5,4.7,7.1,9.8,11,13.1
1989,14.8,13.9,12.7,9.2,7.1,5,2.8,5,7,9.6,11.3,11.7
1990,13.7,15.6,13.3,10.1,6.7,4.3,3.7,4.7,4.7,8.7,10.6,12.7
1991,13.8,14.2,11.8,8.4,5.9,3.3,3,5.4,6.1,7.5,8.4,11.1
1992,13.1,13.2,10.3,6.5,4.6,3.7,4.6,3.8,4.5,6.7,10.4,10.7
1993,12.1,11.9,10.4,7.6,6.3,5.1,3,3.2,4.3,8.2,8.5,10.9
1994,14.2,14,10.7,8.7,7.2,4.2,3,4.1,4.9,7,10.2,12.2
1995,13.5,14.6,12.6,11.3,6.8,4.4,3.4,3.7,6,7.7,9.5,13.3
1996,13.9,14.1,11.1,10.7,5.8,3.9,4.2,3.8,7.2,8.2,9.3,11.7
1997,12.2,14.2,11.8,8.1,7.3,3.9,2.8,4.2,5.3,7.8,10.7,12
1998,13.9,15.9,13.9,10.4,6.3,4.7,6,4.3,6.3,10,10,12.4
1999,14.9,13.8,13.6,9.6,7.7,5.1,4.2,4,5.7,8,11.2,10.8
2000,13.1,13.5,11.7,9.9,6.7,4.8,5.4,4,6.1,8.2,8.2,12.9
2001,12.3,14.2,11.6,8.4,7.5,3.7,2.6,4.7,6.2,9.3,10.4,13.5
2002,13.2,12.4,12.7,8.4,6.8,6.4,4.7,4.6,6.9,7.1,9.4,12.6
2003,13.2,14,12.9,10,7.3,6.2,2.2,4,6.3,7.3,9.3,11.7
2004,13.2,13,9.7,7.6,6.6,5.4,2.1,2.8,4.1,7.1,9.1,9
2005,13.8,15.5,13,8.7,7.9,4.5,4.8,4.8,6.8,7.9,9.8,13.7
2006,13.9,13.7,11.1,10.5,6.4,3.1,3.7,4.1,6.9,7.9,10.4,9.7
2007,13.4,13.5,13.1,8.5,7.8,4.4,4.4,4.8,6,7.8,9.3,12.5
2008,14.4,13.9,12.6,10,5.1,4.7,4.1,4.3,6.3,8.1,10.1,12.8
2009,13.9,14.7,11.4,8.9,5,3.2,3.1,5.5,6,6.6,9.9,11.9
