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