1901,12.4,13,12.3,9.9,8.9,7.3,6.9,8.1,11.5,11.7,11.7,11.9
1902,12.6,12.2,12.1,11.1,9.4,7.6,6.5,5.8,10.7,11,11.7,12.7
1903,13,13.9,11.3,9.6,7.4,6.5,6.4,6.8,10.8,9.9,10.6,11.1
1904,11.6,11.9,11.5,10.2,7.3,6.1,6.3,7,10.1,10.3,11.4,11.6
1905,12.2,12.7,11.7,9.7,8.8,7.5,6.2,7.2,10,12.2,12.2,12.3
1906,12.6,13.6,12.7,11.1,9,4.2,6.1,7.5,9.8,10.9,12.2,12.3
1907,12.7,12.7,13,9.6,7.1,5.5,5.4,6.1,10.1,10.7,12.3,12.9
1908,13.3,12.6,12.5,9.7,7.9,6.5,5.8,5.3,9.8,9.3,11.5,12.3
1909,13.2,12.4,11.5,10.1,6.4,4.7,5.2,7,10.2,10.4,11.6,11.9
1910,12.3,12.4,11,10.5,7,6.9,6.2,7.6,10,10.3,11.8,11.6
1911,12.1,12.1,10.5,9.3,6.3,4.3,4.3,5.6,9.1,10.5,12.1,13.2
1912,13.2,13.2,12.2,10,7.9,4.7,2.6,5.7,8.2,9.5,11,11.3
1913,11,10.9,11.1,9.4,5.4,4.4,3.9,5.4,7.9,10.1,10.6,11.6
1914,11.5,10.9,12.6,9.4,6.2,5.6,5,4.3,6.9,9.7,9.2,11.3
1915,13.6,12.3,11,10.9,8.1,3.9,5.5,5.7,6.9,8.9,10.7,11.4
1916,12.3,11.3,10.8,9.5,6.2,4.1,4.3,4.9,8.4,8.9,10.5,11.2
1917,11.5,10,10.7,9.1,5.8,4.7,2.7,6.1,6.3,9.3,9.7,11
1918,11.6,10.9,11.5,8.8,6.3,5.1,3.7,5.3,9.7,10.5,10.9,11.9
1919,13.2,12.8,11.5,10.4,9.7,4.7,5.4,5.2,8.3,11.3,12.6,12.7
1920,13,13.2,11.8,10.5,7.1,3.8,4.3,4.7,9.8,11,12.7,13.4
1921,13.5,11.4,12.2,9.8,7,4.6,3.7,6.3,8.4,11,11.6,12.3
1922,12.6,12.5,12.2,10.5,6.8,3.7,4.9,5.9,8.5,9,11.6,12.3
1923,12.7,12.8,11.1,9.5,6.4,4.6,4.5,6.2,7.9,11,10.4,11.6
1924,12.9,13.4,10.9,10.3,6.5,5.5,4.9,6.2,9.6,10.2,12,12.3
1925,12.4,11.6,11.2,10.4,7.6,4.8,4.5,6,9.1,9.9,11.9,12.3
1926,13.6,11.9,11.2,10.6,7.3,6.3,4.7,5.4,8.4,10.8,12.1,12
1927,12.3,12,11.6,9.6,6.1,4,4.3,5.5,9,10.8,12.1,12.6
1928,13,12.7,11,10.7,6.8,4.4,4.6,6.5,9.7,11,11.8,11.7
1929,13.4,12.1,11.4,9.9,5.9,4.3,4.6,5.7,9.5,9.6,11.3,12.4
1930,12.3,11.7,11.3,10,6.3,7.2,5.4,6.7,7.8,11.4,11.2,13.3
1931,14.5,13.9,12.2,10.7,7.6,5.4,4.7,7,9.1,11.9,13.1,12.7
1932,12.6,12.8,11.3,9.7,6.7,5.1,6.1,6.6,10.2,11.5,12.6,12.9
1933,12.6,12.6,12,9.6,7.2,4.2,3.5,6.2,9.7,10.4,11.4,13
1934,11.2,11,12,8.4,7.7,6.4,5.5,6.7,9,11,12.4,13.2
1935,13,13.1,12.4,8.7,6.8,5.6,5.3,6.1,9.7,11.3,12.2,13.4
1936,12.8,12.8,11.9,10.4,8.3,5.1,4.8,5.9,10.1,12.4,12.4,13.4
1937,12.9,13.4,11.1,8.6,7.4,5.7,5.4,7.8,10.1,10.5,13.5,13.1
1938,13,13.2,12.2,8.4,7.4,5.8,4.4,6.6,9.8,10.6,12.6,12.9
1939,12.6,12.8,11.8,9.4,7.7,5.8,4.4,6.3,9.8,11.5,12.8,12.9
1940,12.2,12.1,11.6,10.1,7.5,5.9,6,6.4,10.5,11.3,12.5,13.2
1941,11.4,11.5,12,11.4,7.1,4.5,4.5,5.6,7.9,10.2,12,13.1
1942,12.4,11.5,11.1,8.5,6.1,4.2,3.8,5.7,10,10.4,10,10.5
1943,12.1,11.7,11.9,10.2,9,6.2,7.2,7.8,7.2,10.3,11.4,10.7
1944,10.8,11.6,11.1,7.8,6.8,4,3.9,6.2,10.8,10.5,10.4,10.8
1945,11.8,11.6,12.4,9.9,6.6,7.4,6.5,9.3,10.5,10.6,12.2,11.9
1946,13,13.2,12.3,10.3,8.4,7,5,7,9.5,10.7,12.7,12.4
1947,12.5,11.2,11.6,11,7.8,6.1,5.5,7,9.9,10.9,11.9,12.2
1948,12.5,13,9.9,10.2,7,6.5,6.6,7.7,9.4,10.4,12.1,11
1949,10.3,12.3,11.5,9,7,6.6,6.1,6.4,10,10.1,11.3,11.6
1950,9.5,11.9,10.3,9.3,6.3,6.6,6.2,7.1,8.3,9.7,11.8,12.7
1951,11.8,12.1,12,9.8,7.3,5.5,6.2,6,9.4,11.7,12.3,10.6
1952,13.3,12.8,12.3,9.3,7.6,5.9,5.7,7.4,9.1,11,12.2,12.2
1953,12.3,12.4,11.8,9.6,7.6,4.6,4.3,7.1,10.6,12,12.9,12.7
1954,13,12.2,10.6,10.4,6.7,4.4,4.6,6.9,9.8,9.5,12.4,12.5
1955,12.2,12.7,12,9.6,6.8,6.1,4.9,5.6,9.6,10.5,11.7,12.4
1956,12.8,11.6,12,10.2,5.6,3.8,3.2,5.4,9.5,10.4,10.7,11.7
1957,11.9,12.4,11.8,10.2,8.4,5.1,3.3,7,9.3,11.1,11.6,13.5
1958,13.3,13.2,12.3,10.9,7.2,4.6,6,6.6,9.6,11.9,12,13.1
1959,13.5,13.2,11.7,10.9,7.4,4.7,5.2,6,9.1,10.5,11.8,11.8
1960,12.8,11.3,11,9.2,5.7,4.4,4.3,6.1,9,10.6,11.7,12.2
1961,13.5,12.5,11.9,10.4,8.3,5,4.4,6.2,10.4,11.4,12.5,12.6
1962,12,12.8,11,9.5,6.4,2.7,4,5.3,10.1,9.9,11.8,12.1
1963,12.4,11.9,11.4,9.8,7.9,4.9,4,7.6,10,12.4,12.9,12.9
1964,13.4,13.1,12.1,10.5,8.2,5.2,4.2,6.9,9.9,10.9,11.9,12.3
1965,12.3,13.1,11.4,10.7,6.7,4.1,4,5.9,9.4,11.1,11.8,13.2
1966,13.6,13.8,11.9,10,7.1,5.4,5.1,5.8,9.7,12.2,12.5,13
1967,13.4,13.4,12.5,10.4,8.6,5.2,4.5,6.5,10.6,11.7,12.2,12.2
1968,12.8,12.7,12,9.2,6.5,5.4,5.3,7.1,8.1,12,12,13.6
1969,12.9,12.9,13.2,11.5,8.2,5.3,5.1,6.4,10.1,10.8,13.1,11.9
1970,12.6,11.9,11.4,10.3,7.3,6.4,5.4,7,9.3,11.5,12.6,12.1
1971,12.1,11.4,12.4,9.4,7.3,5.5,4.9,6.9,10.3,9.9,11.5,11.8
1972,11.2,10.9,11.4,9.2,7.1,4.7,6.5,7.3,9.6,11.7,13.3,12.9
1973,13.5,14,13.1,11.9,9.5,7.3,7.7,8.1,11.2,11.8,12.7,12.9
1974,12.3,11.8,11.1,9.4,7.9,6.7,5,7.3,10.3,10.2,11.5,11.6
1975,11.5,11.6,11.3,9.8,7.6,6,4.8,6.5,9.2,10.3,11.5,11.4
1976,11.4,11.5,10.3,7.9,6.8,5.1,5.5,6.4,8.4,10.3,10.6,12.6
1977,13.2,12.7,11.2,9.6,6.8,4.8,6.8,6.8,9.6,10.7,11.8,11.6
1978,11.6,11.4,10.4,9.1,7.3,5.9,5.5,5.9,9,11,11.3,11.6
1979,11.2,11.8,11.1,9,7.2,5.2,4.8,7.7,8.6,9.3,11.8,12.3
1980,12,12.1,11.1,10.1,7.4,6.2,6.7,6.5,8.6,11.4,11.8,11.9
1981,12.9,11.6,11.3,9.4,7.4,3.8,3.8,5.7,7.5,10.1,12.4,12.3
1982,12.3,12.1,11.7,9.7,6.1,4.7,5.8,6.8,9.3,11.3,12.1,12.1
1983,13.3,12.8,12.3,11.3,7.7,5.2,6,6.7,9.3,10.1,10.7,12.4
1984,11.7,12,12.1,9.8,8.6,6.1,5.6,5.2,8.4,11.7,12,12.1
1985,12,12.2,11.7,9.9,7.9,5.7,4.3,6.1,9.3,10.3,10.7,12.2
1986,13,12,11.5,10.7,7.3,5.9,3.1,7.4,8.6,9.3,11.1,12
1987,12.9,11.4,11,10.1,7.2,5.8,7,7.3,9.2,10.8,12.6,12.4
1988,13.3,12.1,11.9,10.7,8.1,5.6,4.6,7.6,8.9,10.6,10.9,12.4
1989,12.7,11.6,11.1,10.2,6.6,6.4,4.9,7.1,8.4,10.3,11.3,12.3
1990,12.2,11.8,13,10.7,8,5.7,3.6,6.8,7.9,11.1,12.6,12.7
1991,14.1,12.7,12.5,9.6,6.9,4.9,3.6,5.8,7.9,8.3,10.2,10.8
1992,12.3,12.4,11.2,9.8,8.8,6.5,4.9,5.8,8.4,10.8,11.2,12.4
1993,12.8,9.1,9.5,8,5,2.9,4.9,6,11.7,10.9,12.2,12.8
1994,12.5,12.6,10.6,10.2,8.8,6.8,5.1,6.7,8.8,11.5,12.4,11.9
1995,13.1,12.4,11.6,10.1,6.4,6,5.5,7.7,8.8,11.7,10.9,11.3
1996,11.5,11.5,11.7,11,6.8,5.1,4.9,5.7,7.8,10.2,10.7,10.4
1997,12,11.3,9.7,8,8.4,7,7.1,5.6,9.7,9.6,11.1,12
1998,14.5,13.3,11.6,11,7.8,5.5,5.5,4.4,8,9.3,10.7,11.5
1999,11.5,12.5,11.6,8.8,7,4.8,4.5,5.2,9.7,8.5,9.7,11.8
2000,13,11.7,11.3,10.7,5.7,4.8,3,6.5,7.9,9.6,11.2,11
2001,12.6,10,8.7,8,6.1,2.8,1.1,4.5,6.5,7.5,11.8,11.5
2002,12.1,11.2,10.4,9.3,8.2,5.3,3.9,7,8.6,11.2,11.7,12.9
2003,12.8,12.7,12,9.2,7.3,5.8,5.4,4.8,8.1,10.5,11.1,13
2004,12.5,12,12.1,11.7,6.5,4.9,6.1,7.2,9.1,11.9,13.7,12.5
2005,12.1,12.7,11.9,11.7,8.1,5.1,5.5,6.4,7.8,9,12.6,10.9
2006,13.5,12.1,12,11.4,7.6,5.5,5.6,5.1,6.2,8.5,11.8,12.9
2007,12.1,12.5,11.7,10,6.7,6.8,4.8,6.3,9.3,10.7,12.5,11.8
2008,10.9,12.2,11.2,8.8,5.6,4.6,4.4,6.1,7.9,12.6,11.6,12.7
2009,11.8,12.9,12.1,9.4,7.6,4.3,5.3,6.1,9.1,10.7,13.6,13.1
