1901,7.4,7.6,8.4,9.4,8.8,7.8,7.6,7.6,6.9,7.4,8.2,8.1
1902,7.3,7.5,8.3,9.2,8.5,7.9,8,8,7.1,7.5,8.2,8.1
1903,7.6,7.8,8.5,9.5,8.8,7.8,7.8,7.7,6.9,7.4,8,8
1904,7.2,7.6,8.4,9.5,8.8,8,7.6,7.6,6.9,7.4,8.2,8.1
1905,7.4,7.6,8.4,9.4,8.8,7.8,7.7,7.6,6.9,7.5,8.4,8.2
1906,7.3,7.8,8.4,9.4,9,8.1,7.7,7.8,7,7.4,8,7.7
1907,7.2,7.7,8.5,9.5,8.9,7.9,7.7,7.6,6.9,7.4,8.1,7.6
1908,7.3,7.4,8.6,9.6,9.3,8,7.7,7.6,7.2,8,7.9,7.8
1909,7.1,7.4,8.2,9.1,8.7,7.7,7.7,7.7,6.9,7.4,8.1,8.1
1910,7.3,7.6,8.5,9.6,9,7.9,7.9,7.8,6.9,7.4,8.2,8.3
1911,7.5,7.3,8.4,9.3,8.7,8,7.3,7.5,6.7,7.3,8.1,7.8
1912,7.2,7.5,8.2,9.2,8.5,7.5,7.1,7.2,6.5,7.2,8.2,7.7
1913,7.1,7.3,8.1,9.2,8.7,7.5,7.6,7.6,6.9,7.4,8.2,8.1
1914,7.4,7.6,8.4,9.4,8.8,7.8,7.6,7.6,6.9,7.4,8.2,8.2
1915,7.4,7.6,8.4,9.5,8.8,7.7,7.5,7.5,6.8,7.4,8.3,8
1916,7.3,7.7,8.2,9.2,8.8,7.7,7.5,7.6,6.9,7.4,8.3,8.1
1917,7.4,7.8,8.4,9.3,8.8,7.7,7.5,7.5,6.8,7.4,8.3,8.2
1918,7.3,7.8,8.4,9.3,8.8,7.8,7.6,7.6,6.9,7.4,8.2,8.1
1919,7.4,7.6,8.4,9.4,8.8,7.8,7.6,7.6,6.9,7.4,8.2,8.1
1920,7.4,7.6,8.4,9.4,8.8,7.8,7.6,7.6,6.9,7.4,8.2,8.1
1921,7.4,7.6,8.4,9.4,8.8,7.8,7.6,7.6,7.1,7.5,8.5,8.4
1922,7.7,7.9,8.7,9.5,9,8.1,7.5,7.6,7,7.6,8.6,8.5
1923,7.4,7,8.4,8.9,8.8,7.3,7.6,7,6.2,6.8,7.6,7.5
1924,7.6,7.6,8.5,9.6,9.1,8.4,7.7,8.4,7.1,7.6,8.6,8.4
1925,7.5,7.5,8.4,9.4,9,8.2,8.1,8.1,7.1,7.3,8.2,8
1926,6.8,7.5,8.2,9,8.9,8.1,8.3,7.9,7.2,7.3,8,7.4
1927,7,6.9,8.1,8.4,7.8,7.2,7.1,7.8,6.5,7.7,7.9,7.7
1928,6.6,7.3,8.3,9.5,9,7.7,7.7,7.9,7,7.7,8.5,8
1929,6.8,7.5,8.2,8.8,8.3,7.1,7.4,6.9,6.2,7.4,8.2,7.4
1930,7.5,7.5,8.5,9.4,8.4,7.3,7.3,6.9,6.3,6.7,7.4,8.1
1931,7.4,7.7,8.4,9.4,9.1,8,7.8,7.8,7.1,7.6,8.2,8.2
1932,7.4,8,8.4,9.4,8.8,7.8,7.6,7.6,6.9,7.4,8.2,8.1
1933,7.4,7.7,8.4,9.6,8.9,7.9,7.7,7.8,7.1,7.3,7.6,8
1934,7,7,7.7,9.4,8.8,8.1,8,7.8,6.7,7.6,8.1,8.3
1935,7.3,7.9,8.4,8.9,8.5,8,7,7.3,7.1,7.5,7.9,8
1936,7.6,7.7,8.3,9.2,8.8,8.1,7.3,7.2,6.5,7.3,7.8,7.8
1937,7.4,7.6,8.5,9.7,9.1,7.8,7.4,7.4,7,7.3,8.5,7.4
1938,7.4,7,8.3,9.4,8.8,7.6,7.1,7.1,6.4,7.3,8,7.8
1939,6.7,7.5,8.6,9.5,8.9,7.7,8.2,7.8,7.2,7.3,8.1,7.8
1940,7.9,8.1,8.5,8.4,9.2,8.1,7.9,7.8,6.6,7.2,8.5,7.9
1941,7.8,8.2,8.7,9.7,9.4,8,7.4,7.7,6.6,7.3,7.9,7.9
1942,7.5,8.7,8.4,9.8,8.9,8.3,7.3,7.4,5.8,7.6,8.8,8.6
1943,7.1,7.5,8.6,10.1,9.6,7.9,7.5,7.3,6.5,7.6,8.4,9
1944,6.6,7.6,7.9,9.3,8.9,8.3,7.6,7.8,7.4,7.7,9.1,8.9
1945,7.7,7.4,8.6,10.8,9.6,7.4,7.8,7.5,6.7,7.6,8.6,8.2
1946,7.9,8.1,8.3,9.8,9.6,7.9,7.6,7.1,6.5,7.3,8.5,9
1947,8.3,8,8.6,9.1,8.6,7.9,7.9,7.3,6.1,7.3,8.9,8.1
1948,7.5,7.7,8.4,9.8,9.8,7.2,6.9,6.9,6.1,7.1,6.8,7.5
1949,7.4,7.9,8.2,10.5,9.5,8.2,7.7,8.2,6.4,7.3,8.6,8.6
1950,7.2,6.2,8.4,9.4,8.7,6.8,7.2,7,5.8,6,7.1,7.7
1951,8.4,8.4,8.9,9.1,8.9,8.2,8,7.2,7.8,7.7,8.9,8.5
1952,7.9,8.6,9.4,10.2,9.7,7.9,7.6,7.9,7.6,7.7,8.1,8.1
1953,8,7.5,8.6,9.9,9.1,8.8,7.5,8,6.9,7.5,8.4,8.3
1954,7.8,8.9,9.5,9.9,9.2,7.7,7.7,7.5,7,7.3,7.7,8.3
1955,8.3,7.3,8.2,9,8.5,7.9,7.8,8.2,7,8,7.9,8.3
1956,6.6,7.7,8.8,9.3,8.9,8,7.1,7.8,6.4,7.3,7.5,7.8
1957,8.1,6.9,8.3,9.7,9.5,7.9,8,7.6,7.7,8.4,9.1,9.6
1958,8.7,8.4,9.3,9.5,9.9,8,7.9,8,7.6,7.9,8.7,9.2
1959,8.6,9.1,9.2,9.9,9.5,8.5,7.9,8,7.8,8.8,9.2,9.4
1960,8.4,8.4,9.6,9.7,9,8.2,8.1,8.2,7.3,7.8,9.2,8.8
1961,7.7,8.6,9,9.8,10,8.7,8.8,8.8,7.3,7.7,9.1,9.3
1962,7.8,6.9,8.7,9.6,8.7,7.9,6.9,7.6,7,7.5,7.6,8.3
1963,7.3,7.3,8,9.1,9.1,7.2,6.7,6.6,6.1,7.3,9.2,8.9
1964,7.6,8.2,8.8,9.5,8.7,7.4,6.3,6.7,5.5,6.1,7.5,7.2
1965,6.8,6.9,8.3,9,8.1,6.8,7.1,7.1,7,7,8.3,7.6
1966,8.3,9,8.9,9.2,8.5,7.9,8.1,8.1,7.3,6.9,7.8,7.4
1967,7,7.8,8.7,10.1,9.4,7.6,7.6,7,6.7,7,8.4,8.6
1968,6.4,7.5,7.4,8.6,7.7,6.7,6.1,6.1,6,7.1,7.3,8.3
1969,7.6,7.4,8,9.3,8.2,7.1,6.9,6.3,6.9,7.7,8,7.8
1970,8.6,8.3,9.2,8.9,8.2,7.2,6.3,7.5,6.6,7.7,8.1,8
1971,6.8,6.7,7.1,9.1,8.2,5.8,6.2,7.5,5.4,6.9,7.8,7.5
1972,5.9,6.6,7.5,9.3,9,8,8.5,7.6,6.8,8.2,8.6,8.2
1973,7.5,7.7,8.1,9.6,8.6,7.7,6.7,7.6,7.1,7.3,8.7,7.4
1974,6.9,6.9,8.4,9.1,8.2,8.1,8,6.5,5.3,6.6,7.3,7.4
1975,7.1,7.2,8.4,9.2,8.4,8.1,8,7.1,6.4,6.8,7.1,6.7
1976,7,8,8.3,8.9,8.9,7.9,7.5,7.3,6.3,7.3,8.3,8.1
1977,8.8,8.2,8.9,9.5,8.7,7,7.2,7.3,7,7.7,8,8.2
1978,6.4,7.2,7.2,8.8,7.5,7.2,7.2,7.7,7.3,7.4,8,8.4
1979,7.8,7.4,6.3,9,9.2,8.2,7.8,8.9,7.4,6.3,8.4,9.7
1980,7.7,7.6,8.5,9.9,9.4,7.4,7.2,7.3,7.6,7.4,7.9,7.8
1981,7.8,8.2,9.4,9.5,9,7.9,7.1,8.3,7.2,7.1,7.9,7.9
1982,7.7,7.7,8.4,9.8,9.1,8.4,8,7.6,7.4,7.3,8.5,8.1
1983,7.6,7.7,8.9,10.4,9.6,9.3,8.5,9.4,7.1,8.8,8.9,6.9
1984,5.7,6.6,8.2,7.9,9.1,8.1,8.2,7.9,7.2,7,8.3,8.6
1985,8,7.9,7.9,9.1,8.6,7.6,7.6,7.4,7.4,8,8.9,8.8
1986,8,7.9,8.1,9.7,9,7.8,7.3,7.8,7.2,8.3,8.6,8.7
1987,7.7,8.2,9.9,11,9.4,8.8,8.3,8.5,8.5,8.3,9,8.6
1988,9.2,9.1,9.6,10,8.9,9.1,8.2,8.2,7.6,7.7,8,7.7
1989,7.5,6.4,8.3,8.7,8.5,7.3,7.7,8,7.6,7.8,8.2,8.7
1990,7.1,8.9,9.1,9.6,9.3,7.6,7.2,8.1,6.4,7.8,8.8,8.6
1991,7.4,7.7,8.6,9,8.8,8.2,7.1,6.8,6.3,7.5,7.2,7.1
1992,6.9,8,9.1,10.6,8.9,9.4,8.7,7.1,7.7,7.8,8.2,8.1
1993,6.5,6.2,7.9,9.9,9.3,8.7,7.7,8.5,7.1,7.6,9.9,8.5
1994,5.8,7.8,6.6,9.2,9.1,8.2,8.4,8.2,7.4,8.7,8.5,8.5
1995,7.2,7.6,7.6,9.6,9.4,9.7,8.6,8.4,8.2,8.6,9.3,8.8
1996,8.5,8.2,8.5,9.8,9.4,7.8,8.1,7.6,6.9,8,8.3,8.5
1997,8.6,8.4,8.3,9.8,9.6,8.9,8.4,8.3,8.7,8.2,8.2,8.4
1998,7.6,8.1,9.3,9.1,8.2,8.5,8.3,8.4,7.3,8.8,9.7,8.7
1999,9,8.3,9.1,10,8,9.2,7.8,9.1,8.3,7.6,8.8,8.1
2000,6.8,7.1,9.7,11,10.8,8.1,9.1,9.9,7.2,7.5,10.2,8.4
2001,8.8,10.4,10.4,9.7,9.3,8.2,7.8,9,8.4,8.6,8.7,8.4
2002,8.3,9.3,10.3,11.2,10.5,9.5,9,9.4,9.3,9.4,9.3,9.8
2003,9.1,8.4,10,11.2,10.9,9.7,8.7,8.4,8.4,8.9,10.4,11
2004,10.5,9.9,9.5,9.8,10.2,8.8,8.8,9,7.5,7.4,8.7,8.2
2005,6.9,9.3,10.2,10.9,9.2,9,8,8.3,8.1,7.3,9.6,10
2006,8.2,8.9,9.7,10.4,10,7.5,9,8.5,6.7,8.4,10.3,9.8
2007,9.2,9.4,9.2,10.4,10.2,7.9,7,7.9,9.2,7.1,8.4,9.5
2008,8.8,9,8.9,9.8,9,8.4,7.4,9,8.2,7.7,7.6,7.7
2009,8,9.1,9.9,10.9,9.6,8.6,8.3,9.6,8.9,9.3,9.6,11
