1901,8.6,8.6,8.5,8.7,9.2,8.4,8.3,8.8,8.6,9.2,8.8,8.7
1902,8.6,8.4,8.5,8.7,9.2,8.3,8.5,8.6,8.6,9.2,9,8.8
1903,8.7,8.9,8.5,8.5,8.9,8.2,8.3,8.5,8.6,9.1,8.6,8.4
1904,8.3,8.3,8.2,8.5,8.8,8.4,8.2,8.6,8.5,9.1,8.9,8.7
1905,8.6,8.6,8.3,8.7,9.1,8.5,8.4,8.6,8.5,9.3,8.9,8.6
1906,8.6,8.6,8.5,8.8,9,8.2,8.3,8.5,8.6,9,8.9,8.4
1907,8.5,8.2,8.5,8.5,9,8.4,8.2,8.6,8.6,9.1,8.9,8.8
1908,8.7,8.4,8.5,8.7,9.1,8.5,8.2,8.4,8.4,8.9,8.7,8.6
1909,8.4,8.3,8.5,8.4,9.1,8.1,8.2,8.4,8.5,9.1,8.7,8.5
1910,8.9,8.8,8.8,7.8,7.9,6.7,7.1,7.3,6.9,8,8,7.8
1911,8.5,8.2,7.6,7.7,8,8.1,8,8.4,7.8,9,9.3,9.5
1912,9.9,9.9,10,10,8.5,7.2,7.5,7.7,8.4,9.3,8.4,8.9
1913,9.5,8.5,9.1,8.9,8.6,7.7,8.4,9,8.9,10.7,10.4,9.4
1914,9.8,9.4,8.9,8.8,8.3,7.4,7.9,8.7,8.4,9.5,9,9.6
1915,9.9,10.5,9.3,9.6,9,7.9,8.5,8.7,7.9,8.7,8.3,9.1
1916,8.9,9.3,9,9.7,8.9,6.7,6.7,7.3,8.4,8.4,7.8,9.3
1917,9.4,9.7,9.6,9.7,9.7,9,8,8,7.9,8.5,9.2,8.1
1918,8.9,8.3,8.8,8.8,6.5,10.3,9.8,10.6,8.7,8.9,8.5,8.6
1919,9.5,9.5,8.7,9.3,9.9,7.2,7.2,7.9,8.2,8.7,8.7,8.4
1920,8.8,8.7,8.8,8.3,7.9,6.8,6.3,7.6,7.7,9,8.4,7.5
1921,7.9,7.9,8.1,7.8,8.6,5.7,5.5,7.4,6.9,8,8.4,8.2
1922,8.8,8.7,8.6,9,9.2,8.4,8.6,8.5,8.7,9.2,9.1,8.7
1923,8.5,8.5,8.5,8.6,9.2,8.5,8.5,8.8,8.8,9.2,9.2,8.8
1924,9.1,8.6,8.6,8.8,9.1,8.4,8.4,8.6,8.5,9.2,8.8,8.7
1925,8.5,8.2,8.3,8.7,9.3,8.5,8.3,9,8.5,9.5,9.1,9
1926,8.8,8.6,8.6,8.8,9.1,8.4,8.4,8.7,8.7,9.5,9.2,9
1927,8.8,8.6,8.6,8.8,9.1,8.4,8.4,8.7,8.7,9.5,9.2,9
1928,8.8,8.6,8.6,8.8,9.1,8.4,8.4,8.7,8.7,9.5,9.2,9
1929,8.8,8.6,8.6,8.8,9.1,8.4,8.4,8.7,8.7,9.5,9.2,9
1930,8.8,8.6,8.6,8.8,9.1,8.4,8.4,8.7,8.7,9.5,9.2,9
1931,8.8,8.5,8.6,8.8,9,8.4,8.4,8.7,8.7,9.6,9.2,9
1932,8.8,8.6,8.6,8.8,9.2,8.5,8.5,8.8,8.7,9.5,9.1,9
1933,8.7,8.7,8.6,8.8,9.1,8.4,8.4,8.6,8.7,9.5,9.1,9
1934,8.8,8.5,8.6,8.8,9.1,8.4,8.4,8.7,8.7,9.5,9.2,9
1935,8.8,8.6,8.6,8.8,9,8.4,8.4,8.7,8.7,9.5,9.2,9
1936,8.8,8.6,8.6,8.8,9.1,8.4,8.4,8.7,8.7,9.5,9.2,9
1937,8.8,8.6,8.9,9.3,9.5,9,9.1,9.4,9.2,9.7,9.7,9.4
1938,9.2,8.9,8.9,9.4,9.5,8.8,8.9,9.2,9.3,9.5,9.6,9.3
1939,9,8.9,9,9.7,9.6,9.3,9.1,8.8,9,10,9.4,9.1
1940,9.1,9.4,9.2,9.3,9.8,9.1,9.1,9.1,9.4,10.2,10,9.2
1941,9.6,9.4,9.7,9.5,10.3,8.9,9.1,9.6,9.7,10.6,10.6,10.1
1942,9.9,10.1,9.6,9.9,10.1,9.8,9.7,10.2,9.6,10.7,10.5,9
1943,11.9,9.8,12,11.3,9.7,9.4,9.9,9.6,10.1,11.4,10.5,10.8
1944,10.9,10,9.5,10.5,11.2,10.3,11.2,10.7,11.5,11.1,10.4,10.6
1945,10.7,10.4,9.9,10.1,10.4,8.6,9.4,10.5,11,11.2,11.3,9.9
1946,10,10.3,10.2,9.7,9.7,9.1,8.4,9.3,9.5,10.5,10.4,9
1947,9.8,9.7,9.6,9.8,10.2,8.4,8.4,8.6,8.7,9.1,9,8.1
1948,8.8,9,8.5,8.8,10.3,8.8,8.3,8.3,8.4,9.7,9.2,8.3
1949,9.6,9,9.5,8.2,8,7.2,7.2,7.6,7.3,8,8.6,7.9
1950,7.6,7.4,7,7.2,7.3,6.5,6.9,7.5,7.8,8.6,8.3,7.9
1951,8.3,7.2,7.2,7.7,9.8,9.9,10,9,8.8,9.6,9.2,8.6
1952,9.2,8.6,8.2,8,8.1,6.9,7.4,7.8,7.9,9.1,8.1,8.6
1953,8.5,8.4,8.9,9.9,9.7,8.4,7.9,9.2,9.7,9,8.8,8.6
1954,8.2,8.3,7.8,7.7,7.5,7.1,6.6,7.2,7.5,8.3,9,8.1
1955,8.4,8,7.3,7.4,7.8,7.4,7.3,7.6,7.3,8.5,8,7.8
1956,7.1,7.4,7.9,7.3,7.8,7.5,7.5,7.9,7.4,8.5,8.2,8
1957,7.9,9.4,9.4,9.4,10.7,9.2,9,8.7,8.3,9.5,8.9,9.5
1958,9.6,9.8,8.9,8.8,8.5,8.2,8.2,8,8.4,8.8,7.7,8.4
1959,8.5,8.5,8.6,8.3,8.9,7.9,8,7.9,7.7,8.5,8.6,8.3
1960,8.7,8.2,7.8,7.7,7.8,7.5,7.6,8,7.8,8.7,8.2,8.8
1961,8.8,8.7,8.5,7.9,9.1,8,8.1,8.4,8,9.4,8.5,8.5
1962,8.1,8.2,7.6,9,8.5,7.9,7.9,8.8,8.6,8.9,9.9,8.9
1963,8.1,7.7,8.3,8.2,9.6,8.5,9.4,9.8,9.2,9.3,8.9,8.6
1964,9.4,8.2,8.1,8.6,8,7.6,7.7,8.1,8.1,9,8.7,8.7
1965,8.5,8.4,9.4,10.2,8.4,9.8,9.8,10.1,9.2,10.2,9.7,9.5
1966,9.5,9.1,8.9,9.3,9.1,8.4,8.4,8.2,8.3,9,9.3,8.4
1967,8.2,8.2,8,8.6,8.9,7.2,7.6,7.7,7.6,8.7,8.2,8.3
1968,8.5,8.3,7.4,7.6,7,6.5,8,8.6,8.6,9.5,9.2,8.9
1969,9.5,8.9,9.3,10.1,10.9,9.1,8.4,9.2,9.3,10.4,9.3,9.2
1970,8.9,8.9,8.3,8.3,8.5,7.6,7.1,8.5,8.5,9.2,8.8,8.1
1971,7.9,7.7,7.9,7.8,8.7,8.1,8.5,8.5,7.8,8.9,8.8,8.6
1972,8.5,9.7,9.9,9.8,11,11,10.6,10.6,9.6,10.7,10.1,11.1
1973,10.7,9.8,10,8.8,8.9,7.6,7.3,7.7,7.9,8.6,8.3,7.8
1974,7.7,7.6,7.4,8.3,8.4,7.7,7.5,7.8,7.5,8.8,8.8,7.4
1975,7.1,8,7.4,8.2,8.2,7.6,7.6,8.5,7.2,8.3,7.7,7.8
1976,9,8.7,8.4,9.2,10.9,9.9,9.9,9.2,8.7,9.2,10.1,10.1
1977,9.9,8.7,9.2,9.5,9.9,9,8.7,8.6,9,9.3,9.3,9.2
1978,8.6,9.3,8.9,8.7,8.7,7.6,8.5,8.3,8.6,9.5,9.6,8.7
1979,9.7,8.5,8.9,9.1,9.1,8,8.9,9.8,9,10.3,9.5,9.1
1980,9.4,8.8,9.1,9.7,9.7,8.7,8.9,8.5,8.6,9.2,9.1,9
1981,7.9,9.1,8,8.4,9.2,8.2,7.7,8.5,8.4,9.3,8.7,8
1982,9.3,7.8,8.8,8.3,9,8.6,9.1,9.2,9.2,10.4,9.5,11
1983,10,11.1,11,9.8,9.6,12.1,10.4,10.3,9.7,10.2,9.4,9.5
1984,8.7,8,8.2,8.1,8.7,7.8,8.1,8,9.2,9.7,9.1,9
1985,8.4,8.1,8.3,7.9,7.8,7.5,7.6,7.6,8.1,9.5,9.3,9.3
1986,8.8,8.4,7.5,8.1,8.4,7.6,7.9,8.7,8.9,9.3,9.6,9.6
1987,9.7,10.4,10,10.2,9.7,9.5,9.6,9.3,9.6,10.6,9.7,9.6
1988,9.5,9,9,8.3,9.1,7.7,7.6,8.7,8.1,8.5,9.4,8.8
1989,8.3,8.9,8.2,7.6,7.9,8,8.2,8.8,9,9.4,9.5,9.1
1990,9,9,9.2,8.8,9.8,8.1,8.1,8.8,8.8,9.5,9.7,8.6
1991,8.9,8.5,8.5,8.8,9.5,9.2,8.3,8.9,9.2,9.6,9.5,10.3
1992,10.5,10.2,11.2,11.8,11.9,9.9,8.3,9.1,8.8,9.8,9.4,9.3
1993,8.7,9.5,9.1,9.5,10.7,10.4,9.4,9.1,9,9.6,9,8.8
1994,8.8,8.3,8.7,9.3,8.9,8.2,8,8.3,9.2,10.4,9.7,10.2
1995,10.6,9.5,9.1,8.6,9.4,9.1,8.5,8.7,9.4,9.2,8.7,8.9
1996,8,8,8.2,7.6,7.8,7.2,7.3,7.8,8.2,9,8.4,8.5
1997,8.5,8.2,9.2,9.9,11.6,11.2,9.6,9,9.3,10.9,9.8,10.6
1998,9.7,9.5,11.4,11.4,11.1,9.5,9.3,9.7,8.9,9.9,9.2,9.1
1999,8,9,8.1,8,8.2,8,8.1,8.9,8.7,9.6,9.1,8.5
2000,8.3,8.4,8.1,8.6,8.9,8.7,8.4,9.5,9,9.9,9.4,9
2001,8.5,9.3,9.1,9.1,8.5,7.5,8.2,8.8,8.2,9.3,9.1,8.7
2002,8.7,9.4,10.2,10.1,10.2,8.5,8.3,9.6,9.1,10.4,9.9,9.8
2003,10.2,9.7,9.5,8.4,8.5,8.6,8.8,7.9,8.7,10.3,10.2,9.6
2004,9.6,9.5,9.1,9.4,8.6,8.3,8.9,9.3,9.5,10.3,10.1,9.6
2005,9.9,8.9,9.4,9.3,9.8,8.9,8.6,9.8,9,9.5,8.5,7.5
2006,9.4,8.6,9.8,8.5,8.7,9,10.3,11,8.9,9.5,10.5,9.7
2007,10.7,8.8,9,9.1,8,7.1,7.9,8.4,7.9,8.6,8.6,8
2008,9.1,9.2,9.7,8.3,8.4,8.7,9.9,10.4,9.4,9.5,9.3,8.8
2009,8.9,8.8,8.8,9.3,8.8,9,9.1,9.7,9.4,9.7,9.9,9.8
