1901,7.4,6,6.9,11.3,15.2,15.3,19.2,17.1,15.3,11.8,9.8,6.5
1902,7.5,5.2,9.3,11.1,11.6,14.8,15.6,16.1,15.6,11.9,10.8,8.1
1903,7,9.8,8.6,9.4,13.4,14.8,15.9,15.9,14.7,11.8,9.4,6.5
1904,7.7,5.6,7.4,10.8,13,15.9,17.4,16.5,14.7,12.6,9.1,7.8
1905,8.2,7.7,8.8,9.2,14.2,17.2,17.9,15.8,14.4,10.6,8.2,9
1906,7.9,5.8,7.9,10.5,11.7,16.5,16.8,18.1,16.6,12.8,10.4,7
1907,7.4,6.6,9.8,10.2,12.4,13.1,16.3,15,16.1,12,9.5,7.4
1908,7.3,8.3,7.3,9.1,14.4,16.2,16.7,16.1,14.7,14.7,11.2,8.5
1909,7.9,7.8,6.2,11.3,13.8,14.2,15.6,17.2,14.4,11.8,7.8,6.3
1910,6.7,7.5,9.1,9.6,14,16,16.1,16.8,15.2,12.9,7.3,8.7
1911,7.9,8,8,10.5,15.4,15.8,18.7,18.9,15.5,11.8,8.7,8.4
1912,6.6,7.6,9.6,11.9,13.6,14.7,15.9,13.8,13.4,11.5,8.9,9
1913,7.2,8.1,7.9,10.2,12.7,15.1,16.2,17.2,15.5,13.1,11,7.5
1914,7.3,9.4,8.1,12.3,13,16.4,17.2,18,15.5,12.9,9.7,5.9
1915,6.4,6.5,8.2,10.9,12.9,16.2,15.8,16.6,15.6,11.9,6.8,6.6
1916,10.2,6.4,5.6,10.8,13,13.6,16.7,18.2,15.2,12.3,9.9,6.1
1917,4.8,6.2,6.6,8.3,14.3,15.5,17.9,17.5,15.5,9.7,10.9,6.7
1918,6.5,9.3,8.9,10.3,15,15.7,16.8,17.4,12.5,11.5,9.4,9
1919,6.3,5.6,5.9,10.6,15.7,15,16,17.1,14.6,11.8,6.3,7.8
1920,7.9,9.1,8.9,9.5,13.3,15.9,15.2,15.5,15,13.2,11.2,7.1
1921,9.4,8.4,9,11.7,13.2,16.6,19.1,15.7,15.8,14.8,9.7,10.3
1922,7.4,8.2,8,8.3,14.3,14.6,14.5,14.7,14.1,11.3,10.1,8.2
1923,9.6,8.2,9.2,9.5,10.8,14,17.4,16,14,11.9,6.7,7.7
1924,8.3,7.5,7,9.8,12.8,14.8,15.9,15.5,14.1,12.3,10.7,10
1925,8.6,7,7.9,9.8,12.5,16.7,17.7,17,13.6,12.9,7.9,6.4
1926,8.4,8.9,8.7,12.1,12.4,15.2,17.9,17.7,15.6,10.7,9,7.9
1927,7.7,8.5,9.6,10,13.2,13.1,17.1,17.4,13.7,13,9.2,5.6
1928,8.4,8.8,7.7,10.7,13.8,13.8,16,16.6,14.7,12.6,10.2,7.5
1929,5.7,5.9,9.8,9.7,14.1,14.8,17,16.2,16.4,11.5,9.6,8.2
1930,7.4,4.8,7.5,10.8,13.6,16.9,16.2,16.4,15.2,12.1,9,8
1931,6.8,7.2,6.7,9.8,12.9,14.1,15.3,15.9,13.7,12.2,10.4,9.1
1932,9.7,7.9,8.2,9.6,12.5,16.8,16.7,17.1,14.5,11.2,9.7,8.6
1933,6.3,7.1,9.3,11.3,13.5,16.9,18.3,18,16.9,12.7,8.7,6.8
1934,8.3,8.8,7.7,9.6,12.9,16.3,18.9,16.3,15.5,12.1,9.1,9.8
1935,7.9,8.3,9.2,10.4,13.7,15.4,17.8,17.7,15.2,11.9,9.1,6.3
1936,6.1,6.2,8.5,9.7,13.8,16.3,16.3,17.5,15.8,12.9,9.3,8.8
1937,7.8,7,5.7,10.7,14,15.4,16.4,17.6,15.1,12.5,9.2,6.5
1938,8.3,8.1,10.8,11.9,12.8,14.7,15.3,17.4,15.5,12.6,10.8,7.7
1939,6.5,8.4,8.7,10.9,13.8,16.9,16.1,17.8,15.7,11.5,10.5,7.3
1940,4.3,5.9,8.2,10.5,14.8,18.7,16,17.3,14.6,11.7,9.9,7.8
1941,3.9,6.4,6.7,8.8,12.7,16.5,16.9,16.4,16.8,13.9,9.6,9.2
1942,6.3,5.7,7.2,11.7,13.4,15.5,16.4,16.8,14.6,12.2,9.6,9.8
1943,7.6,9.5,9.5,12.1,13.8,15.8,17.4,16.3,14.7,13.1,9.8,8
1944,9.1,7.7,9.1,12.1,13.2,14.9,16.8,18.3,14.5,11.6,8.7,8
1945,4.7,9.4,10.7,11.8,13.7,15.4,17.1,18.1,16.2,14,11.2,9
1946,7.4,8.4,8.8,12.2,14.4,15,16.4,16.1,15.2,11.9,10.3,7.6
1947,6.2,2,5.2,9.9,14.6,15.7,17,20.7,16.1,13.8,9.8,7.9
1948,6.8,7.5,11.4,11.8,14.3,14.9,16.7,16.1,15.1,12.6,11.4,9
1949,8.6,8.9,9,11.6,13.7,17.5,18,17.6,17.4,13.7,10.3,8.5
1950,8,7.7,10.2,9.6,14.4,16.9,17,17.1,14.2,12,8.5,5
1951,6.3,6,6.7,9.2,12.4,15.9,16.6,16.2,15.4,13.3,10.8,8.5
1952,5.3,7.1,8.5,12,14.9,14.9,17.2,16.8,13,11.4,7.8,6.8
1953,7.9,8.6,9.6,9.9,15,16.1,16.3,17.2,15.8,13,11.1,10.1
1954,6.9,6,8.2,11.2,13.3,14.7,15,15.7,14,12.9,9.9,9.2
1955,5.5,4.4,7.1,12.6,12.5,15,18.9,19.4,16.2,12,10.5,8.3
1956,6.4,5.7,9.2,10.9,14.3,15.1,16.7,14.7,15.1,12,9.9,9.2
1957,8.8,7.4,10.4,11.6,13.4,17.1,16.1,16.5,13.7,12.7,9.8,8.4
1958,6.9,7,5.9,10.2,12.8,14.8,16.6,16.6,16.7,13.1,10.5,7.7
1959,5.2,8.9,9.7,11.2,15.2,16.5,17.3,18,17.1,15,10.3,8.7
1960,7.5,6.5,8.4,12,15.8,17.5,16.5,16.8,15.3,12.7,9.9,6.9
1961,7.1,9.2,10.5,11.3,13.5,15.1,15.6,16.3,15.9,12.6,9.1,6.3
1962,7.6,7.9,6.1,10.8,12.8,15.3,16.1,15.6,14,12.9,9.1,7.5
1963,3.5,4.1,8.8,10.5,12.2,16.3,16.2,15.3,14.5,13.1,9.9,7.2
1964,8.3,7.4,7.5,11.2,14.6,15,16.3,16.2,15.5,12,10.4,7.4
1965,6,6.6,7.8,10.7,13.2,15.7,15.1,15.9,14,13.1,7.5,7.3
1966,6.2,6.7,9,8.6,13.3,15.8,16.2,16.2,15.4,12,8.5,7.9
1967,7.6,8,8.5,10.6,12,15.7,16.6,16.6,15.3,11.8,9.6,7.7
1968,7.6,5.3,8.6,10.9,11.6,16.5,16.6,18.1,15.4,13.9,9.6,7.4
1969,7.5,4.1,6.3,10.5,12.6,16.2,17.1,17.4,15.5,14.9,7.5,7.3
1970,7,5.9,6.9,9.1,14,18,15.1,17.4,15.2,12.6,9.6,8
1971,8.1,8.2,9.3,11,13.8,14.5,17.7,16.6,16.6,13.9,9.8,10
1972,7.1,7.5,8.6,11,12.7,13.5,16.9,15.9,14.7,13.7,9,9.2
1973,8,7,9.4,9.6,12.7,16,16.9,17.3,15.4,12.1,8.9,8.2
1974,9.1,8.2,8.3,11.9,13.4,15.8,15.8,17,13.7,10.9,9.1,9.6
1975,8.6,8.3,7.7,10.8,13.2,16.9,18,19.3,14.7,13.1,9.9,9.3
1976,8.1,7.8,7.8,11.2,13.5,17.4,18.4,19.7,15.1,12.4,9.3,5.6
1977,6.1,6.5,9,9.5,13.6,15,18,17.6,14.5,13.9,8.7,8.8
1978,6.1,5.3,8.6,9.5,15,15.2,15.9,16,15,13.6,11.1,7.3
1979,4.7,5.1,6.4,9.3,11.3,15.7,16.2,16.2,14.8,13.5,9.8,7.8
1980,6,7.8,7.2,11.8,15.1,15.2,16,17,15.7,11.2,9.7,8.8
1981,8,6.7,9.2,11.2,13.8,14.7,16,17.5,15.9,10,10.1,4.9
1982,6.3,8,8.4,11.7,14,16.6,17.9,16.7,14.9,12.6,9.7,7.5
1983,8.5,5.7,8.5,9.1,12.2,15.1,19.3,19.1,14.6,12.4,10.5,9.2
1984,5.5,7.2,7.1,11.7,13.7,15.7,18.1,19.1,14.5,12.7,9.8,8.7
1985,4.6,6.8,7.1,10.7,13.1,14.7,16.2,15.4,14.8,13.1,7.3,8.5
1986,6.2,3.5,7.9,8.4,12.3,16.2,15.8,14.8,14,12.5,10.4,8
1987,5.4,7,6.8,11.5,12.7,13.9,16.8,16.4,14.8,11.2,9.4,8.9
1988,7.1,7.1,8,11,14.6,16.5,15.6,16.1,14.5,12.3,9.3,10
1989,9.9,8.1,8.8,9.1,14.3,15.9,19.1,16.8,15,13.1,9.2,7
1990,8.7,8.1,10,10.5,14.7,15.3,17.6,17.6,14.5,12.9,9.3,7.8
1991,6.7,6.5,9.5,10.5,13.7,14.1,18.2,18.1,16.4,11.8,9.7,9
1992,8,9,9.1,10.3,15.2,17.4,16.9,16,13.9,10.4,9.6,7.3
1993,8.3,8.9,9.1,11.3,13.1,15.3,15.5,16,14.6,10.7,8.8,6.9
1994,7.4,5.7,8.4,10.1,13.1,14.9,17.5,16.6,14.5,12.4,12.5,9.1
1995,7.5,7.8,7.3,11.1,13.7,16.6,19,19.9,15.4,14.9,11.2,6.3
1996,8.1,7,6.7,11,11.9,16,16.8,17.2,16.3,13.6,8.8,6.9
1997,6.8,8.8,10.3,11.8,13.9,15.1,18,19.3,15.6,13,11.5,9
1998,8.2,10.6,9.6,9.6,14.2,15.1,16.1,16.7,15.6,11.9,9.6,9.4
1999,7.5,7.7,9.4,11.2,14.2,14.8,17.9,16.8,16.4,12.9,10.6,7.2
2000,8.1,8.4,9.6,10,14.9,15.4,17,18,16,12.4,9.4,8
2001,6.7,7.1,7.1,9.7,15.2,14.5,16.5,17.1,15,14.4,10.6,7.7
2002,8.8,8.2,9.7,11.4,14.1,15.4,15.8,17.8,16,11.3,10.9,7.9
2003,7,7.5,10.4,12.8,13.1,16.4,18.1,18.9,15.8,11.5,10.7,8.2
2004,7.5,7.9,9.1,11.4,14.4,16,16.5,18.3,15.5,11.8,10.7,9
2005,8.5,7,9.6,11.1,13.1,16,17.1,17.2,16,14.2,9.3,8
2006,7.8,7.6,7.1,10.3,13.7,17,20,16.8,17.1,13.9,10.1,8.9
2007,8.3,8.1,9.3,13.6,13.8,16.1,16.5,16.4,15.1,13.8,10.8,8.5
2008,7.9,9.2,8.3,10.6,16,15.6,17.4,17,15.1,11.5,9.4,7.2
2009,6.7,7.4,9.4,12,13.8,17.2,17.4,17.2,15.7,13.3,10.1,6.2
