1901,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1902,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1903,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1904,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1905,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1906,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1907,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1908,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1909,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1910,6.5,6.7,6.5,6.7,6.4,5.6,5.2,5.1,5.3,5.5,5,5.5
1911,6.4,6.6,6.3,6.7,6.4,5.9,5.4,5.3,5.5,5.7,5.2,5.9
1912,6.7,7,6.8,7.1,6.5,5.8,5.3,5.2,5.6,5.8,5,5.8
1913,6.6,6.7,6.6,6.9,6.5,5.9,5.5,5.5,5.7,6,5.4,5.9
1914,6.7,6.9,6.6,6.9,6.4,5.8,5.4,5.4,5.6,5.8,5.2,5.9
1915,6.7,7.1,6.6,7.1,6.8,6,5.5,5.5,5.7,5.9,5.1,5.8
1916,6.5,6.7,6.6,6.9,6.6,5.9,5.5,5.4,5.7,5.7,5.2,5.7
1917,6.5,6.6,6.4,6.8,6.4,5.9,5.5,5.3,5.6,5.7,5.1,5.6
1918,6.3,6.6,6.6,6.9,6.6,6,5.8,5.3,5.7,5.8,5.2,5.8
1919,6.6,6.9,6.5,7,6.8,5.7,5.3,5.2,5.6,5.6,5.1,5.7
1920,6.5,6.7,6.5,6.8,6.3,5.7,5.1,5.2,5.5,5.7,5,5.5
1921,6.4,6.6,6.4,6.8,6.5,5.9,5.3,5.3,5.6,5.8,5.1,5.8
1922,6.5,6.7,6.5,6.9,6.6,6,5.5,5.4,5.7,5.8,5.2,5.8
1923,6.3,6.7,6.5,6.8,6.3,6.1,5.1,5.3,5.8,5.7,5.2,5.6
1924,6.9,6.7,6.7,7,6.7,5.9,5.4,5.4,5.4,5.6,5,5.7
1925,6.2,6.3,6.1,6.8,6.6,5.8,5.4,5.3,5.7,5.9,5.1,5.8
1926,6.6,6.8,6.7,7.2,6.8,6.2,5.5,5.4,5.7,5.8,5.3,5.6
1927,6.3,6.6,6.5,6.9,6.6,6,5.3,5.5,5.7,5.7,5.3,6
1928,6.5,6.8,6.4,7,6.6,6,5.4,5.4,5.7,5.8,5.2,5.7
1929,6.6,6.8,6.4,7,6.5,5.9,5.2,5.4,5.8,5.8,5.3,5.9
1930,6.1,6.7,6.5,7,6.5,5.8,5.4,5.1,5.5,5.8,5.4,5.9
1931,6.6,6.9,6.8,7.2,6.8,6.3,5.6,5.3,5.8,5.8,5.1,6
1932,6.7,6.8,6.5,7.3,6.7,6.1,5.4,5.6,5.6,5.8,5.2,5.9
1933,6.9,6.8,6.6,6.9,6.7,6.1,5.7,5.1,5.5,5.5,5.1,5.5
1934,6.2,6.3,6.1,6.7,6.2,6.1,5.3,5.2,5.9,5.5,5,5.7
1935,6.3,6.4,6.6,6.7,6.4,6,5.3,5.3,5.3,5.8,5.1,5.9
1936,6.5,6.6,6.7,6.9,6.6,5.8,5.3,5,5.5,5.7,5.4,5.6
1937,6.3,6.6,6.5,6.6,6.4,6,5.5,5.4,5.6,5.6,5.1,5.6
1938,6.4,6.6,6.4,6.8,6.4,5.8,5.4,5.2,5.4,5.7,5,5.7
1939,6.1,6.6,6.3,6.6,6.4,6,5.3,5.3,5.6,5.6,5.2,5.8
1940,6.1,6.4,5.9,6.8,6.4,5.8,5.4,5.3,5.3,5.7,5,5.4
1941,6.3,6.8,6.5,6.8,6.7,5.9,5.4,5.4,5.7,6.2,5.7,6.3
1942,6.4,6.4,6.5,6.7,6.2,5.5,5.2,5,5.5,5.8,5.2,5.6
1943,8.4,6.5,8.6,8.4,6.3,5.7,6.4,5,5.8,7,5.2,7.1
1944,7.9,7.9,7.4,8.2,7.3,6.7,7.8,6.8,7.4,6.7,5.9,6.6
1945,7.7,8.2,7.7,6.6,6.1,6.6,5.8,6.3,7.1,6.9,6.4,6.2
1946,6.1,7.3,7.3,7.9,7.1,6.6,5.9,5.9,6.2,6.4,6,5.9
1947,6.4,6.6,6.5,6.8,6.4,5.9,5.4,5.4,5.8,5.7,5.2,5.7
1948,6.5,6.6,6.3,7,7.6,6.3,5.7,5.9,6.3,5.6,5.5,5.6
1949,6.3,7.3,7.4,6.7,6.3,5.6,4.8,5.1,4.9,4.9,5,5.1
1950,5.3,5.4,5,5.4,5.8,4.2,3.9,4.1,5.5,5.2,4.9,5.3
1951,5.2,6,5.9,6.1,6.4,6.6,6.1,5.4,5.6,5.7,5,5.5
1952,5.8,6.4,6.4,6.4,6.7,5.3,4.9,4.6,4.8,5.1,4.3,5.2
1953,5.5,5.9,5.5,6,6.2,5.3,4.1,5.9,4.5,4.8,5.1,4.6
1954,6.3,6.4,6,6.9,5.9,5.3,4.9,4.9,5.1,5.1,5,5.4
1955,5.5,6.4,5.8,6,5.9,5.2,4.7,4.3,4.8,5.2,4.4,4.8
1956,5.4,6.1,6,6.3,5.7,5.1,4.9,4.7,5,5,4.2,5.2
1957,5.6,5.9,5.8,6.2,7.3,6.6,6.4,6,6,6.2,5.1,6.3
1958,5.5,6.3,6,6.5,6.4,5.9,5.2,5,5.1,5.3,4.3,5.4
1959,6.6,5.6,6,6.6,5.9,5.1,4.8,5.1,4.8,5.1,4.5,5.3
1960,6,6,5.4,6,5.6,4.5,4.7,4.4,4.8,4.7,4.5,5.7
1961,5.4,5.7,5.5,6.2,7.2,5.6,5.7,5.2,5.6,5.6,5.6,5.8
1962,6.7,7,6.2,6.5,6.3,4.9,5.9,5.7,5.7,5.9,5.5,5.8
1963,6,5.9,5.6,6.2,6.2,6.1,5.7,5.5,5.4,5.4,5.2,6.1
1964,6.8,7.5,5.8,6.6,6.6,5.9,5.5,5,4.8,5.4,5.1,5.2
1965,6.4,5.8,5.6,6.4,5.8,4.5,5,4.2,4.8,5.5,4.3,5.3
1966,6.2,6,6,6.7,6.4,5.6,5.6,5.2,5.1,5.1,4.4,4.9
1967,6.2,5.7,6,6.5,5.9,4.5,4.6,4.1,4.3,4.7,4.2,4.9
1968,5.4,5.7,6,6.6,4.9,5,4.7,5.2,5.7,4.9,3.7,4.8
1969,5.8,6.5,6.5,7.4,6.7,5.9,4.4,4.5,4.8,4.8,4.4,4.8
1970,5.9,6,6.9,6.8,5.8,5.5,5.5,4.6,4.8,5.1,4,5.3
1971,6.1,5.9,5.6,5.9,5.4,5.4,4.9,5.1,5.4,4.9,4.3,5.4
1972,6.2,6.3,5.8,7.1,7.6,6.8,6.6,7,6,6.6,5.4,6.8
1973,6.2,6.5,6.5,6.7,6.1,6.4,4.5,4.4,5.8,5.1,4.2,4.1
1974,5.7,5.7,5.6,6.3,6.1,6,4.5,5,4.9,4.8,4.6,5.1
1975,5.4,6.1,6.2,6.6,5.9,5.3,4.4,4.7,5,5.2,4.2,4.8
1976,5.2,6.1,5.9,6.4,6.5,6.3,5.9,5,4.5,5.4,4.8,5.4
1977,5.9,5.9,6.1,6.3,6.1,5.8,6.1,5.7,5.7,6.4,6.2,6.6
1978,6.6,7.4,6.2,5.9,6.2,5.7,5.2,3.9,5.1,5.7,5.7,5.5
1979,6.3,6.1,6.7,6.5,6.3,5.5,5.3,5.2,5.3,5.5,4.8,4.9
1980,5.9,5.6,6.4,7,6.2,6,5.2,5,5,5.5,4.3,5
1981,6.7,7.6,7.6,7.7,7.5,6.9,5.7,5.8,6,6.7,5.7,7
1982,6.7,7.6,7.5,7.6,7.3,6.8,6.2,5.6,6.5,6.4,5.9,6.7
1983,8,8.5,8,8.2,7.3,6.8,6.6,5.9,5.7,5.8,5.9,6.3
1984,5.1,6.6,7,7.3,6.1,6.6,5.4,5.9,5.9,6.6,4.9,6.2
1985,6,6.4,6.8,7.1,6.3,6.1,5,5.5,6.1,5.9,4.7,5.6
1986,7.5,6.5,7.2,7.6,7.2,6.2,5.2,6,5.7,6.5,5.5,6.7
1987,7.5,7.9,7.4,7.7,6.8,6.9,6.8,6.6,7,6.4,6,7
1988,7.3,7.7,7.7,8,7.6,6.4,5.8,5.9,6.3,6.2,5.5,5.8
1989,6.3,6.1,7.4,7.6,6.7,6.8,5.6,6.3,6.5,6.9,6.2,5.7
1990,7.9,7.4,7.6,7.9,6.8,6.8,6.3,5.6,6.6,6.6,6.4,6.3
1991,6.4,7.1,7.4,7.8,7.1,7.5,6.3,4.7,5.7,5.7,5.6,6
1992,7.2,6.9,6.4,7.3,6.8,6.5,5.4,6.3,5.8,5.9,5.1,6.1
1993,6.6,6,6.1,6.6,6.5,6.9,6.1,5.6,5.7,6.2,5,6.1
1994,5.9,6.5,6.4,6.7,6.5,6.4,5.8,4.9,5.9,6,5.4,6
1995,7.1,6.9,6.3,6.1,6.8,6.8,6.5,6.2,6,6.1,5.3,5.2
1996,5.5,6.2,7.1,7.2,6.6,6,6,5.7,6.1,6.3,5.2,5.9
1997,5.5,7,7.3,7.4,7.2,7,5.9,5.9,6.9,7.2,5.7,7
1998,8.9,8.1,8.5,8.4,7.7,6.9,6,6.5,6.4,6.8,5.5,6
1999,6,6.2,6.8,6.6,6.2,6.5,5.4,5.5,5.4,5.6,5.4,4.9
2000,5.5,5.1,4.7,5.3,6.6,6.7,6.2,5.9,5.7,6.6,6.1,6.1
2001,7.1,7.5,5.7,6.5,5.5,4.4,4.9,5,4.8,5.2,4.7,5.3
2002,6,6.6,6.5,7.2,7,5.2,5,5.3,5.6,6.2,6.1,6.5
2003,6.7,6.8,7,6.5,6.3,5.4,5.2,5,5.7,6.3,4.9,5.5
2004,6.6,7.1,7.4,6.6,5.5,4.8,4.6,4.7,5.1,6.5,5.2,6.4
2005,6.6,7,6.4,6.9,5.9,5.3,5.1,4.8,4.8,5.2,3.8,4.1
2006,6,5.9,6.6,6.2,5.9,6,6,5.3,5.7,6.3,5.2,5.6
2007,6.9,6.9,6.5,6.8,5.8,4.4,4.7,4,4.5,4.4,4.1,4.4
2008,6,6,6.2,6.1,5.5,5.2,5.5,5.2,5.6,5.5,4.7,5.3
2009,6.2,6.4,5.8,7.9,7,7.2,6.9,6.5,6.8,6.6,5.9,6.2
