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