1901,7.1,6.7,7.5,11.2,15.8,15.6,18.2,17.4,15.9,12.1,9,7.2
1902,7.5,6.2,9.1,11.2,11.9,15.4,16,16.9,16,12.7,9.8,7.6
1903,6.8,9.2,8.8,10,13.2,16.1,16.9,16.3,15.6,11.8,9.3,6.4
1904,6.8,6.3,7.6,10.7,13,16,17.1,16.8,15.3,12.8,8.9,8
1905,7.5,7.7,9.3,10.5,14.3,17.1,18,16.3,14.8,11.1,8.3,8.5
1906,7.9,7,8.7,11.2,12,16.7,17.4,17.9,17.2,13,9.5,6.8
1907,7.1,6.8,10.2,10.5,12.7,13.9,17,16.4,16.6,11.5,9.3,7.5
1908,6.8,8.5,8.1,10.4,14.4,16.2,17.2,17.1,15,15.1,11.2,8.5
1909,7.6,7.8,7.3,11.8,14.4,15.4,16.3,17.7,15.4,12.7,7.7,6.8
1910,6.8,7.6,9.5,10,13.8,16.1,16.9,17,15.4,13.3,8,8.2
1911,7.3,8.2,8.7,10.7,15.2,16.7,18.4,19.4,16,12.9,8.5,7.9
1912,7.1,7.8,9.5,12.3,14.4,15.1,16.8,14.9,14.5,12.2,9.2,9
1913,7,7.9,8.4,10.9,12.9,15.2,16.7,18.2,16,12.9,10.1,7.6
1914,6.8,8.6,9,12.9,13.1,16.4,16.9,18.2,16.2,13.2,9.7,6.3
1915,6.6,7,8.8,11.3,14.2,17.1,16.6,17.5,16.6,13.4,7.7,7.1
1916,9.2,7.2,6.5,11,13,15,16.9,19.1,16,12.9,9,6.1
1917,4.8,6.6,7.7,8.9,14.1,15.9,18.6,17.6,15.6,10.6,9.9,6.7
1918,6.2,8.6,9.5,11.1,14.9,16.1,17.3,17.2,13.6,11.6,9.4,9.4
1919,6.3,6.6,7.3,10.6,15.6,15.6,16.8,18,15.3,12.6,6,8.3
1920,7.5,8.9,8.9,9.9,13.2,15.9,15.7,16.4,15.4,14,10.7,7.4
1921,9.2,8.5,9.5,12.4,13.5,17,19.5,16.4,16,14.8,10.3,10
1922,7.9,8.8,9.4,9.7,13.9,15.3,15.2,15.3,14.7,12.2,9.3,8.1
1923,8.8,8.6,9.9,10.2,12,14.6,17.6,16.7,14.4,12,7,8.1
1924,8,7.7,8.7,10.4,13.2,15.2,16.3,16.1,14.7,13,9.9,9.4
1925,8.3,7.6,8.8,10.7,12.4,16.7,16.7,17.4,14.2,13.2,8.4,7.2
1926,8.4,9.6,9.7,12.9,13.2,15.9,19,18.8,16.6,11.9,8.7,7.5
1927,7.7,9.2,10,10.8,14.3,14.6,17.2,17.3,14.8,13.8,9.6,6.4
1928,8.6,9.4,8.5,11.1,14.3,15,16.5,17.2,15.6,13,10.2,8.1
1929,6.4,7.5,11.2,11.3,14.4,15.9,17.6,16.7,17.1,12.3,9.8,8.3
1930,7.3,6,8.5,11,13.8,17.1,16.4,16.4,15.8,12.7,9.2,8.1
1931,7.5,8,9,11.3,13.7,15.6,16.2,17.2,15.1,13.2,10.4,9
1932,9.5,8.3,9.8,10.7,13.5,17.7,17.2,18.5,15.6,12.1,9.8,8.6
1933,6.6,7.8,10.6,12.3,14.6,17,18.8,19,17.7,13.1,9.2,7
1934,8.4,8.2,8.9,10.4,13.4,17.5,19.8,17,15.7,12.2,8.9,9.6
1935,7.8,8.7,10.1,11.2,14.7,15.8,18.4,18.3,15.8,12.3,8.5,6.5
1936,6.2,7.4,9.6,11.1,14.5,16.7,16.8,18.5,16.7,13.9,9.2,8.5
1937,7.7,8.2,7.2,11.8,14.8,15.8,17.2,18.7,16,12.8,9.3,7.1
1938,8.4,8.4,11.2,13.1,13.6,15.6,16,17.8,15.9,13.1,10.4,7.6
1939,6.8,9,9.5,11.9,14.8,17.8,16.5,18.4,16.5,12.2,10.5,6.8
1940,6,7.9,9.8,11.8,15.4,19.9,16.5,18.2,15.6,12.1,9.8,8.2
1941,4.7,6.8,8.3,10.1,13.3,16.7,16.9,16.2,17.4,13.6,9.6,8.6
1942,7.5,6.5,9.9,12.8,14.1,15.9,16.9,17.4,14.9,11.9,8.9,9.6
1943,8.1,9.2,10.8,12.6,14.3,16.1,17.9,16.5,14.9,12.8,9.6,8
1944,8.9,7.8,10,13.1,13.9,15.5,17.6,18.8,15.1,11.9,9.3,7.8
1945,5.5,9.6,11.6,13,14.5,16.1,17.5,18.3,16.8,14.5,11.1,9.3
1946,7.6,8.6,9.6,12.5,15.2,15.3,16.7,16.3,15.4,13.3,10.1,7.7
1947,6.9,3.7,7.6,11,14.3,16,16.9,20.6,16.4,14.2,9.9,8
1948,7.7,8.3,12.6,12,14.5,15.4,16.6,17.2,15.2,12.7,11.4,8.8
1949,8.6,9.4,10.5,11.9,13.7,17.7,18.4,18.3,17.7,13.7,10.1,8.5
1950,8,8,11,10.8,14.8,17.1,17.7,17.2,14.4,12.2,8.5,5.7
1951,6.9,6.7,7.7,10.3,13.4,16.6,17.9,16.6,15.6,13.4,10.3,8.2
1952,6.6,7.8,9.9,12.2,15.2,15.8,17.8,17.6,14.4,12.5,8.6,7.6
1953,7.7,8.6,10.4,10.9,15,16.2,17,17.6,16.2,13,10.4,10
1954,7.4,7.2,9.7,12.1,14.1,15.6,15.6,16.4,14.7,13.2,9.6,8.9
1955,6.6,5.9,8.4,13.4,13.3,16,19.4,20,16.7,12.4,10.5,9.1
1956,7.3,6.6,10.6,11.8,14.6,15.5,17,16.1,15.7,12.9,9.8,8.8
1957,8.4,8,11.7,12.8,14.5,17.6,17.2,17.3,14.7,12.9,9.4,8.3
1958,7.4,8.4,7.9,11.6,13.4,15.7,17.4,17.6,17.1,13,10.6,8
1959,6.5,9.4,10.7,12,15.6,17.3,18.3,18.7,18.1,15.2,9.8,8.6
1960,7.8,7.5,10.2,12.8,16,17.7,17.2,17.5,15.8,12.8,9.5,7.4
1961,7.2,9.6,11.3,12.6,14.7,15.7,16,17,16.2,12.7,9.3,6.3
1962,7.7,8.4,7.8,12,14,16,17.3,16.9,14.9,13.6,9,7.8
1963,5.2,5.2,10.1,11.2,13.1,17.5,17.2,15.9,15,13.6,10,6.8
1964,8.2,8,9.6,12.1,15.1,15.9,17,17.3,16.6,12.7,10.8,7.9
1965,6.6,7.3,9.5,11.7,14.1,16.4,16.8,17,14,13.9,7.7,8
1966,6.3,8.1,10.1,10,13.8,16.7,16.9,17.3,16.8,12.4,8.5,8.7
1967,7.7,8,9.3,11.8,12.8,16.5,17.1,17.3,15.2,12,9,8.1
1968,8.1,6.5,9.4,11.8,12.8,16.9,17.4,18.6,16.4,14.5,9.2,7.5
1969,7.3,5.4,8.1,11.7,13.7,17,17.8,17.4,16,15.1,8.1,7.8
1970,7.5,7,8.5,10.2,14,18.4,16.1,17.4,15.6,13,9.4,7.8
1971,8.2,8.4,9.4,11.9,14.4,15.3,18.5,17.3,17.8,14.4,10.3,9.7
1972,6.5,7.6,9.3,11.3,12.7,13.8,17,16.4,15.4,14,9.1,8.8
1973,7.9,8,9.9,10.6,13.7,16,16.7,18,16.4,12.4,10.1,8.5
1974,8.4,8.4,9.1,13.4,13.6,16.3,16.5,17.3,13.8,10.9,8.7,9.5
1975,8.6,8.9,8.8,11.2,13.5,17.2,18.6,19.2,15.1,13.4,9.9,8.6
1976,8.3,8,9.3,12.3,13.5,17.2,18.7,20.1,15.9,12.4,9.6,5.5
1977,6.3,7.6,9.8,10.3,14.4,15.6,18,18.4,15.4,13.5,8.5,8.3
1978,6.8,6.5,9.1,10.6,14.7,15.3,16.3,16.7,15.9,13.7,11,7.1
1979,5.2,5.7,7.6,10.1,11.7,15.8,17,16.3,15.3,13.7,10.2,7.9
1980,6.4,8.8,8.3,12.1,14.9,15.5,16.3,17.6,15.8,11.8,9.5,9
1981,8.9,7.8,10.3,12.4,13.6,14.9,16.2,18.2,16.6,10.7,10.5,5.6
1982,7.1,9.1,9.8,12.8,14.5,17.6,19.1,17.7,15.5,12.7,9.8,8.2
1983,9.1,6.6,9.9,10.3,12.9,16.2,20.1,19.7,15.8,13,10.9,9.4
1984,7,8.8,8.8,13.6,14.6,15.9,18.7,19.9,16.1,13.5,9.5,8.9
1985,5.3,7.6,8.8,12.2,13.6,15.7,17,16,16,13.7,8.3,9
1986,7.3,4,9,9.6,12.7,16.6,16.5,15.8,15,13.4,10.4,8.9
1987,6.3,8.2,9.1,12.9,13.3,15,17.6,17.9,15.8,11.9,10,8.4
1988,7.7,8.1,9.9,12.8,14.8,16.8,16.1,16.7,14.8,13.1,9.8,10.4
1989,10.1,9.1,10,10.4,15.4,16.6,19.7,17.9,15.8,13.2,9.5,6.9
1990,8.9,9,10.6,11.6,16.3,15.7,19.3,18,15.7,13.3,9.8,8
1991,7,7.2,10.6,11.5,14.3,15.6,19,19.1,17.7,12.3,9.8,8.8
1992,8.1,9.4,10.1,11.3,16.4,17.5,18.5,17,14.8,11.3,10.1,7.4
1993,8.9,9.2,10,12.3,14.5,16.2,16.8,17.1,15.9,11.9,8.8,8
1994,7.9,7,9.7,11,14.2,15.4,18.5,17.3,15.4,13.7,11.9,9.2
1995,8.1,8.7,8.6,12.2,13.8,17.5,20,20.4,17,14.7,10.9,6.7
1996,7.6,7.7,8.6,12.3,13.3,16.8,17.9,18.1,17.8,13.8,9.4,7
1997,6.8,9.5,11.1,13.3,16,16.6,18.4,20,16.9,14,11.1,9.3
1998,8.3,10.5,11,11.5,15.4,16.6,16.9,18,17.6,13.7,10.2,9.6
1999,8.3,9.1,10.3,12.8,15.2,15.8,19.4,18.8,17.1,13.7,10.8,8.1
2000,8.1,9.6,10.6,11.3,15.1,16.8,19.2,19.1,16.5,12.5,9.2,7.7
2001,6.6,8.1,8.8,11.5,16,16.2,17.6,18.2,16.4,14.7,11.2,8.2
2002,9.5,9.5,10.8,12.7,14.4,15.4,16.7,18.1,17.7,13.1,10.7,7.8
2003,7.9,8.6,11.7,14.2,14,17.5,18.4,20.1,16.9,13.3,11,8.9
2004,8.8,8.6,10.5,12.4,14.9,17,17.4,19.3,16.6,12.1,11.2,9.6
2005,9.3,8.3,11.6,12.4,13.9,17.2,17.9,18.4,17,14.3,10.3,8.9
2006,8.4,8.8,9.1,11.7,14.6,18.2,20.4,18.1,17.9,14.7,10.9,9
2007,9.1,9.2,10.9,15.1,14.7,17.6,17.4,17.7,16.7,15.3,11.7,9.3
2008,8.7,9.6,9.6,11.6,16.4,16.6,18.1,17.5,15.8,12.8,10,8.1
2009,7.4,8.7,11,12.7,14.4,18.2,18.3,17.6,16.3,14,9.8,6.6
