1901,5.2,5.2,4.3,3.9,2.6,2,1.4,1.2,1.7,2.7,2.7,4.1
1902,5.6,5.5,4.9,3.5,1.9,1.6,1.6,1.3,1.9,1.6,2.4,3.5
1903,4.5,5.5,4.8,3.5,2.3,1.1,1.2,0.9,1.2,2.5,3.3,4.8
1904,5.9,5.5,4.6,3.7,3,2.1,1.6,1.2,1.2,1.7,2.5,4.3
1905,4.7,5.7,5.4,3.4,2.2,1.3,1.5,1.5,1.1,1.5,2.7,4.5
1906,4.8,4.7,4.3,3.4,2.4,2.1,1.4,1.5,1.7,2.3,2.7,5.1
1907,5.9,6.5,5.6,4.3,2.6,1.5,1.6,1.3,1.3,1.6,3.3,5.5
1908,6,5.7,5,3.6,2.8,2,1,1.3,2.4,2.3,3.3,4.2
1909,5,6.2,5.4,3.6,3.1,2.1,1.6,1.9,1.8,2.3,3.2,5.6
1910,5.7,5.9,5.5,3.5,3.4,2.3,1.1,1.9,1.9,2.6,3.6,5.2
1911,5.3,5.8,6.1,5,2.9,2,1.3,2.5,1.6,2.1,2.1,3.6
1912,4.7,4.2,4.1,3.7,2.2,1.8,1.3,1.8,1.6,1.8,2.6,4.9
1913,5,4.5,5.1,3.3,2,1.9,2.1,1.7,2.1,2.2,2.7,4.3
1914,6.7,5.1,4.9,3.7,1.3,2,1.7,1.7,1.5,1.9,2.5,3.5
1915,5.2,5.1,4.5,3.8,2,1.2,1.9,1.9,2,2.6,2.7,4.6
1916,5.2,6.2,6,4.4,2.3,2.6,1.3,1.4,2.1,1.9,3.2,5.2
1917,6.3,5.7,5.3,4.1,3.1,1.9,1.7,1.6,2,2.6,3.4,4.2
1918,5.5,6.6,5.5,4,2.4,2,0.7,1.9,1.7,1.9,2.1,4
1919,4.5,5.6,4.8,3.8,2.5,2.2,1.3,1.8,1.1,1.9,2.1,4.2
1920,4.6,5.8,4.9,4.1,2.4,1.7,2.5,0.8,1.4,2.1,2.2,4.3
1921,5.6,5.1,5.6,3.1,2.7,2,1.6,1.6,2,2.3,3.2,4
1922,5.4,6.3,4.1,3.7,2.7,1.2,1.3,2.1,2.1,3.3,3,4.5
1923,6.2,4.6,4.2,3.2,2,1.5,0.4,1.2,2,1.8,3.9,4.8
1924,6,6.3,5,4.7,2.8,1.7,2,1.8,2.5,3,3.8,4.7
1925,5.7,5.3,5.1,3.5,2.8,1.4,2.1,1.8,1,2,2.1,3.9
1926,5.4,5.3,4.3,4.9,2.7,2.4,1.6,1.8,1.7,1.6,2.6,4.3
1927,5.8,6,4.7,3.1,2.2,0.6,1.4,1.2,1.2,1.7,2,4.2
1928,5.7,6.5,5.5,4.1,2.9,1.7,2.1,2,1.1,2.4,2.8,4.4
1929,5.6,5.5,4.7,3.5,3.1,2.7,1.6,2.2,1.4,1.9,2.5,4
1930,5,5,4.4,3.5,2.6,1.8,0.9,1.1,1.2,1.4,2,4.4
1931,4.8,5.1,4.2,3.2,2.9,1.4,1.1,1.5,1,2.4,2.8,4.2
1932,4.2,5.1,4.7,3.9,2.3,1.9,1.5,1.2,1,2.3,3,4.3
1933,5.7,5.4,5.2,3.8,2.1,1.3,1.3,1.9,1.9,1.8,2.5,4.8
1934,4.4,5.7,4.6,4.3,2.4,1.8,1.4,1.7,1.8,1.8,3.7,5.9
1935,5.7,6.5,5.8,4.5,2.3,1.7,0.9,1.9,0.4,2.1,2.3,6.1
1936,5.7,5.5,4.1,4.2,2.7,1.9,1.3,2.2,1.6,2.6,2.9,4
1937,4.8,4.9,4.8,3.5,2.5,1.3,1,2.4,1.5,1.9,2.8,5.1
1938,6.1,7.4,5.6,4.4,3.7,1.5,0.3,1.9,1.3,2.5,2.8,4.2
1939,4.2,5.2,5.2,3.9,2.5,2.5,0.7,0.9,1.5,2.2,3.2,5.2
1940,5.7,4.8,4.5,3.3,2.4,2.2,1.7,1.8,1.9,1.9,2.8,4.7
1941,5.5,5.8,5.8,3.1,2.3,1.2,1.4,0.7,2.2,1.8,2.2,4.1
1942,5.4,5.6,4.8,3.9,2.5,3.7,1.4,0.9,2.4,2.8,2,3.6
1943,5.7,5.5,4.4,5.2,2.8,2.1,2.2,0.9,2,2.6,3.5,4
1944,5.4,5.5,6.3,4.5,3.6,0.2,1.8,0.5,0.9,1.6,2.9,4.6
1945,7.1,6.1,5.1,2.9,2.7,1.2,1.2,1.5,1.2,1,3,3.5
1946,5.3,5.6,5.7,3.1,3.3,1.7,0.9,0.8,0.7,1.8,1.7,2.7
1947,4.7,5.9,6.1,3.7,3,1,1,1.4,0.8,1.5,3.4,4.5
1948,5.8,5.2,5.3,3.7,3.6,1.6,1.6,1.6,2.3,2.6,3.2,4.7
1949,5,5.3,4.3,4,4.4,0.8,0.5,0.3,1.4,2.7,3.3,5.1
1950,6.7,4.9,3.9,2.9,3.4,-0.4,1.2,0.2,1.6,2.8,2.8,3.4
1951,5.5,5.8,5.8,5.3,3.5,1.8,2,1.9,0.8,1.8,3.7,4.5
1952,5,5.9,3.7,4.3,1.2,0.8,1.8,2.1,3.3,2.2,2.6,5.5
1953,5.9,5,4.6,2.7,2.2,1.3,1.5,1.9,1,2.1,2.6,4.1
1954,4.9,5.6,6.7,4,3.7,1,1.2,1.4,1.3,2,3.2,3.9
1955,5.7,5.3,4.3,3.4,3.6,-0.1,1.8,1.4,1.6,3.6,3.6,4.3
1956,6.5,4.8,4,4.9,2.6,2.1,0.7,1.3,1.7,2.6,3,5.6
1957,7.1,7.2,6.6,5.5,3,1,1.9,2,3,2.5,3.1,4.7
1958,5.4,6,4.8,3,2.8,1.6,1.3,2.1,2.5,3.8,3.9,4.9
1959,5,5.3,4.8,4.9,2.3,1.8,0.7,1.9,1.9,2.1,2.9,4.3
1960,4.7,6.2,5.1,4.7,3.9,2.3,1.7,1.9,1.9,3.4,3.8,3.8
1961,4.8,4.6,3.8,3.8,2.4,1.5,0.9,2.2,1.3,3.4,3.2,5.2
1962,5.4,6,6.1,3.5,3.9,2.8,2.1,1.4,2.4,2.7,4,5.6
1963,5.5,6.7,4.8,3.8,2,1.8,1.4,0.3,1.8,2.2,1.7,3
1964,5.3,5.7,4.6,3.7,2.5,1.8,1.9,0.3,2.1,2.6,2.5,5.3
1965,6.5,4.6,6,3.6,2.6,1.7,0.9,1.5,1.9,0.7,2.6,3.4
1966,4.6,5.4,4.9,3.8,2.9,1.2,1.3,2.4,2,1.8,2.8,3.6
1967,5.8,4.8,5.4,2.7,1.6,2.1,1.6,2.4,1,2.8,1.6,4.2
1968,5.1,5.6,5.6,5.4,4.5,2.6,2,3,1.3,2.1,3.4,5.2
1969,6.6,5.9,3.9,3.4,2.6,0.9,2.3,2.4,2.7,0.7,4.1,5.5
1970,4.7,5.5,5.5,3.4,3.3,2.6,2.2,2.4,0.5,2.3,3.9,4.3
1971,5.7,6.2,5.7,4.8,4,1,2.8,2.1,0.9,2.9,3.4,5
1972,5.3,5.6,5.3,2.7,1.3,-0.8,0.6,0.7,0.8,1,2.2,3.6
1973,5.6,5.7,5.6,3,1.3,2.1,2.8,1.8,2.5,1.7,2,5.1
1974,5.6,6,4.9,4.8,2.7,1.2,0.9,1.7,3.1,2.2,4.2,6.5
1975,7.3,6.7,6.6,4.6,2.6,1.6,1.8,0.6,1.8,1.8,2.7,2.8
1976,4.8,4.5,5.3,4.5,2.6,0.5,0.7,1,2.5,2,2.6,5.8
1977,5.7,6.1,5.6,3.7,1.7,0.9,1.2,3.1,1.9,2,3.5,5.5
1978,6.4,6.8,4.7,5.5,4.1,1.3,3.3,2.6,2.6,2.7,3.5,5.3
1979,5.3,5.7,5.5,5.2,2.9,3.3,3,2,1.7,2.8,3.9,5.4
1980,6.2,7.2,6.4,5.4,2.8,2.4,1.9,2.2,2.6,3.2,1.7,4.9
1981,5.5,5.2,6.3,5.5,3.9,3.7,3,1.9,1.2,3.1,3.2,6
1982,5,6,6.6,5.2,4.5,2.9,2.4,1.4,2.4,2.2,1.8,3.5
1983,6,5.8,3.9,3.8,1.6,1.6,2.3,2.3,1.3,3.2,3.7,4.3
1984,5.9,6.9,6.5,4.1,3,2.8,1.8,2.5,3.2,2.8,3.7,5.7
1985,7.3,7.4,5.8,4.5,3,4.5,2.4,2.6,2.7,2.9,3.2,4.4
1986,6.5,7.2,6.4,5.2,2.8,2.3,1,0.8,1,3,3.7,5.5
1987,7.5,6.1,5.5,4,3.4,1.3,1.5,1.7,1.2,2.2,3.8,4.9
1988,5.6,5.3,3.7,3.9,1.1,1.6,1.3,1.4,2,2.5,3.1,5.5
1989,6.7,6,4.9,4.4,4.2,2.4,1.8,3.6,3.6,3.4,3.2,4.4
1990,6,6.4,5.6,3.3,1.7,2,2.3,2.7,2,2.2,4.3,3.8
1991,5.8,5.2,6.3,4.5,2.6,1,2,2.5,2.3,2.3,3.1,4.6
1992,6.3,5.8,4.7,5,2.5,2.1,2,0.4,1.4,3,4,4.4
1993,5.4,6.5,5.5,4.7,4.2,1.7,3.4,2.1,1.7,2.9,2.7,4.2
1994,6.1,5.9,5.3,4.2,3.5,1.2,1.9,1.8,0.6,1.9,2.4,4.2
1995,5.4,5.9,4.8,5.7,4.3,-0.3,0.4,1.7,2.4,1.9,3,4.6
1996,5.4,6.2,5.9,5.2,3.3,1.3,1.6,1.8,3.9,2.7,2.4,5.8
1997,6.1,6.2,5.2,3.4,3.7,1.8,3.2,1.8,0.9,1.9,1.8,3.5
1998,5.3,6.1,5,4.2,3.1,2.4,1.8,0.7,2.4,1.9,3.2,5.2
1999,6.1,7.9,4.9,4.8,4,2.3,1.7,2.1,3.4,3.2,3.2,4.1
2000,5.9,5.4,5.6,4,4,2.6,3.8,1.7,2.7,3.7,2.3,5.2
2001,5.5,5.2,5.9,5.2,2.5,2.6,2.3,2.6,2.9,3.2,3.5,5.6
2002,6.6,6.5,4.6,4.8,2.5,1.9,1.8,2,2.8,3,3.8,5
2003,6.2,5.6,6.4,5.1,2.9,1.9,1.5,2.5,1.6,2.5,2.8,4.4
2004,6.5,5.5,5.6,4.7,3.9,2.4,2.8,1.1,2.1,2.1,3.5,3.4
2005,5.7,7,5.3,4.1,2.7,2.1,2.9,3,2.2,3.2,3.5,6.6
2006,5.8,5.8,4.5,5.9,3.1,1.6,2.2,1.9,2.9,2.2,2.7,4.2
2007,6.1,6.2,6.3,4.1,4.4,1.5,1.7,2.5,2.6,1.8,3.2,5.3
2008,6.6,7,5.8,4.6,2.7,3.3,2.5,1.8,3.2,2.3,3.4,4.9
2009,6.7,5.6,5.7,5.1,2.5,2.2,1.8,3.2,2.5,1.6,2.9,4.8
