1901,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1902,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1903,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1904,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1905,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1906,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1907,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1908,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1909,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1910,8.5,9,8.4,8.5,7.6,6.9,6.7,6.5,6.5,6.1,5.5,6.6
1911,8.4,8.8,7.9,8.5,7.6,7.4,7.1,6.9,6.9,6.5,5.9,7.3
1912,8.9,9.4,8.8,9.3,7.8,7.1,6.9,6.6,7.1,6.6,5.6,7.1
1913,8.8,8.9,8.5,8.9,7.8,7.2,7.2,7.1,7.3,7.1,6.3,7.2
1914,8.9,9.2,8.4,8.9,7.7,7.1,7,7,7.1,6.7,5.8,7.3
1915,8.9,9.6,8.6,9.2,8.1,7.4,7.2,7,7,6.5,5.6,7.1
1916,8.5,9.1,8.4,9.2,7.9,7,6.7,6.6,7.1,6.4,5.5,7.2
1917,8.7,9.2,8.5,9.1,8.1,7.6,7.1,6.8,6.9,6.4,5.9,6.8
1918,8.5,8.8,8.4,8.9,7.3,8,7.7,7.5,7.2,6.6,5.7,7
1919,8.8,9.2,8.3,9.1,8.3,7,6.8,6.7,7,6.4,5.7,6.9
1920,8.5,8.9,8.4,8.7,7.5,6.9,6.4,6.6,6.8,6.5,5.6,6.6
1921,8.2,8.7,8.1,8.6,7.8,6.7,6.3,6.6,6.7,6.3,5.6,6.9
1922,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1923,8.4,8.9,8.3,8.8,7.9,7.5,7,7,7.2,6.6,5.9,7
1924,8.7,8.9,8.4,9,8.1,7.4,7.1,7,7,6.6,5.8,7
1925,8.3,8.7,8.1,8.8,8,7.4,7.2,6.9,7.2,6.8,5.8,7.1
1926,8.6,9,8.4,9,8.1,7.6,7.2,7,7.2,6.7,5.9,7
1927,8.4,8.8,8.3,8.9,8,7.5,7.1,7,7.2,6.6,6,7.2
1928,8.5,8.9,8.2,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7
1929,8.6,8.9,8.2,8.9,8,7.5,7.1,7,7.2,6.7,5.9,7.2
1930,8.5,8.9,8.4,8.9,8,7.5,7.2,7,7.2,6.7,6,7.2
1931,8.6,9,8.4,9,8.1,7.5,7.2,7,7.2,6.7,5.9,7.1
1932,8.5,8.9,8.3,9,7.9,7.5,7.1,7,7.2,6.6,5.9,7.1
1933,8.6,8.9,8.3,8.9,8,7.5,7.3,6.9,7.2,6.6,5.8,7
1934,8.4,8.8,8.2,8.9,7.9,7.5,7.1,7,7.3,6.6,5.8,7.1
1935,8.5,8.8,8.3,8.9,7.9,7.5,7.2,7,7.1,6.7,5.9,7.1
1936,8.5,9,8.4,9,8.1,7.5,7.1,7,7.3,6.7,6,7.1
1937,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1938,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1939,8.5,8.9,8.2,8.8,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1940,8.5,8.9,8.3,8.9,8,7.5,7.2,7,7.2,6.7,5.9,7.1
1941,8.4,9,8.4,9,8.1,7.4,7.4,7.1,7.2,7.2,6.5,7.7
1942,8.6,8.8,8.4,9,8,7.4,7.4,7,7.2,6.9,6.3,7
1943,11.1,9.1,11.4,10.9,8,7.6,8.1,7.1,7.7,8.3,6.3,8.8
1944,10.3,10.6,9.3,10.2,9.3,8.5,10.2,8.9,9.5,7.9,6.9,8.3
1945,10.1,10.5,9.5,8.9,7.9,7.9,7.6,8.2,9.2,8.2,7.7,7.7
1946,8.4,9.8,9.4,10,8.6,8.3,7.5,7.7,8,7.6,7,7.2
1947,8.5,8.9,8.4,8.8,8,7.5,7.1,7,7.3,6.5,5.9,6.9
1948,8.6,9,8.1,9,9.4,8.1,7.2,7.2,7.7,6.8,6.1,6.8
1949,8.6,9.5,9.4,8.7,7.9,7.2,6.4,6.6,6.3,5.8,5.7,6.2
1950,7.6,7.8,7,7.5,7.2,5.8,5.8,5.7,6.6,6,5.4,6.4
1951,7.4,7.8,7.5,8.2,8.2,8.4,8.1,7.5,7.4,7,6,6.9
1952,8.5,8.6,8.1,8.2,7.7,6.4,6.2,6.1,6.5,6.1,4.9,6.5
1953,7.8,8.5,7.8,9,8.3,7.3,6.4,7.5,7.1,6,5.8,6
1954,8.3,8.4,7.7,8.5,6.7,6.3,6.2,6,6.4,5.6,5.2,6.3
1955,7.8,8.6,7.4,7.9,7.2,6.7,6.5,5.9,6.3,5.9,5.6,6.4
1956,7.5,8.4,7.5,8,7.2,6.6,6.5,6.4,6.7,5.9,5.2,6.2
1957,7.8,8,8,8.9,9.2,8.7,8.3,7.9,8,7.2,5.9,7.4
1958,8.3,8.9,8.1,8.8,7.9,7.3,7.2,6.5,6.7,6.4,5,6.6
1959,8.2,8.4,8.4,8.9,7.8,7.1,7.1,7.1,6.5,6.7,5.1,6.5
1960,8.1,8.4,7.6,8.5,7.2,6.3,6.8,6.7,6.8,5.8,5.1,7
1961,8.1,8.4,7.7,8.3,8.7,7,7,6.9,7.1,6.8,5.9,7.1
1962,8.5,9,7.7,8.5,7.9,6.3,7.1,7.2,7.4,6.8,6.3,7.4
1963,8.4,8.5,7.5,8.2,8.2,7.4,7.4,7.3,7.4,6.7,6,7.3
1964,8.8,9.1,7.8,8.6,7.7,7.2,6.9,6.4,6.5,6.2,5.8,6.3
1965,8.5,8.3,7.4,8.5,8.3,7.3,7.3,6.9,6.9,6.7,5.8,7
1966,8.5,8.7,8.2,8.9,8.1,7.4,7.5,7.1,7.2,6.5,5.7,6.7
1967,8.5,8.4,7.8,8.6,7.9,6.1,6.5,6,6.2,5.8,4.5,6.1
1968,7.7,8.2,7.5,8.2,6.2,6.1,6.6,7.1,7.7,6.4,5.4,6.7
1969,8.6,9.2,8.7,9.6,9.2,8.4,7.1,6.6,7.4,6.6,5.6,6.9
1970,8.5,8.8,8.5,8.9,7.4,7.2,6.9,6.3,7.1,6.5,5.1,6.8
1971,8.3,8,7.3,8,6.9,6.8,6.7,6.8,6.8,6,5.2,6.4
1972,8.5,8.9,7.9,8.8,8.6,8.2,8.8,8.8,7.8,7.9,6.6,8.4
1973,8.9,9.1,8.4,8.6,7.5,7.2,6.3,6,7.1,5.9,5.1,5.6
1974,7.6,8,7.6,8.5,8,7.2,6,6,5.5,6,5.6,6.7
1975,7.6,8.2,8.2,9.1,7.5,6.7,6.1,6.7,6.5,6.6,5.1,6.2
1976,7.7,8.3,8,8.6,8.1,7.9,7.7,7.5,6.9,6.5,5.9,7.2
1977,8.5,8.5,8.4,8.8,8,7.5,7.7,7.2,7.4,7.2,6.5,8
1978,8.9,9.7,8.6,8.6,8,7.6,7.4,6.4,7.3,6.9,6.8,7.5
1979,8.8,8.8,8.6,9,8.1,7.9,7.4,7.2,7.5,6.9,6,6.9
1980,8.6,8.5,8.4,9.5,8.3,7.9,7.4,6.7,6.9,6.5,5.5,6.6
1981,8.5,9,9.1,9.6,8.2,7.6,6.9,6.5,7.4,7,5.4,7.4
1982,9.5,10,9.5,9.5,9,8.3,8.4,7,7.9,8.5,6.5,9
1983,9.7,10.3,9.5,10,9.6,9.3,9,7.7,7.4,6.7,6.3,7.2
1984,7.7,8.6,8.5,8.8,7.2,7.9,6.9,7.6,7.6,7.7,5.4,7.4
1985,8,8,8.6,8.8,6.7,7.4,5.9,6.7,6.8,6.2,5,6.3
1986,8.5,9.2,8.4,9.5,7.6,6.8,6.5,7.5,7.5,6.7,5.8,7.3
1987,9.1,9.7,8.9,9.5,8.2,8.4,8.1,8.1,7.8,7.1,6.6,7.7
1988,9.1,9.3,8.5,8.9,8.4,7.6,6.5,6.4,7.3,6.1,5.7,6.6
1989,8,8.1,8.7,8.9,7.4,7.4,6.4,7.3,7.1,6.7,6.2,6.9
1990,8.9,8.9,8.6,9.3,8,7.5,7.3,6.9,8,7,7,7.5
1991,8,8.9,8.7,9.1,8.6,8.5,7.5,6.1,7.1,6.5,5.9,7.3
1992,9.2,9,8.5,9.7,9.3,8,7.1,7.3,7.3,7.1,6,6.9
1993,8.3,8.5,8,9,8.4,8.1,7.8,7.4,7.3,6.7,5.7,7
1994,8,8.4,7.8,8.7,8,7.2,6.9,6.3,7.3,6.9,5.9,7.2
1995,9.1,9,8.1,8.7,7.9,8.5,7.7,7.4,6.9,6.7,5.4,6
1996,7.3,7.8,8.3,8.4,7.5,6.1,6.4,6.5,7.3,5.9,5.9,6.3
1997,7.9,8.2,8.3,9.5,9.6,9.3,9.3,9,8.6,8,7.4,8.7
1998,9.9,9.9,9.6,10.6,9.4,8.7,7.8,8.1,7.6,6.7,6.4,6.8
1999,7.8,8.4,8.3,8.8,7,7.5,6.5,6.8,6.7,6.6,5.6,6.6
2000,7.8,8,7.5,8,8,7.4,7.4,7.3,7.2,7.2,6.2,7
2001,9.8,10.2,7.5,8.3,6.6,5.5,6.5,6.3,6.1,5.6,5.1,6.4
2002,7.9,8.7,8.5,9.6,8.6,6.7,6.5,6.6,7,6.6,6.7,7.4
2003,8.7,8.9,8.6,8.2,7.4,6.8,6.9,6.7,7.1,7,5.8,6.8
2004,8.2,9,8.4,8.3,6.6,5.6,6.3,6,6.6,7.4,5.7,8.1
2005,8.6,8.5,7.3,8.5,7.1,6.3,6.6,6.2,5.9,5.5,4,5
2006,8.1,7.8,8,7.8,6.9,7.6,7.1,6.8,7.3,6.8,6,6.9
2007,8.9,9.1,7.9,8.8,6.8,5.3,6.2,5.4,5.5,4.7,4.6,5.5
2008,7.9,8.2,8,8.1,6.7,6.5,7.4,7.1,7.3,6.3,5.2,6.3
2009,8,8.7,7.7,9.8,8.2,7.9,8.5,7.7,7.7,7.2,6.2,7.5
