1901,6.3,6.4,6.8,10,14.8,15,18.2,16.4,15.4,11,9.1,6.2
1902,6.6,5.7,8.5,11.3,11.2,15,15.3,15.7,15.2,11.7,9.8,7.2
1903,6,8.4,8,9.1,12.6,14.4,15.2,15.7,14.2,10.9,8.2,5.9
1904,6.4,5.2,7.1,9.4,12.4,15.7,16.9,16.1,14.2,11.6,7.9,6.6
1905,7,6.8,8.2,8.8,12.9,16.8,16.9,15.5,14.4,9.8,7.7,7.7
1906,6.9,5.1,7.3,10,10.8,15.5,16.3,16.9,16.3,12.5,8.8,5.8
1907,6.4,6,8.6,9.9,12,13.1,15.5,14.4,15,11.1,8.5,6.1
1908,6.6,7.2,7.2,8.8,13.2,15.1,16,15.4,14.1,13.8,9.6,7.1
1909,6.8,7.4,6.3,10.5,13,14.2,15.3,15.9,14.2,11,7.3,5.4
1910,5.6,6.5,8.8,8.6,13.1,15.8,15.5,16.3,14.6,12.3,5.8,6.9
1911,6.7,7.6,8,9.7,14.2,15.4,16.9,17.8,14.5,11.4,7.4,7.2
1912,5.8,6.9,9.2,10.7,12.8,14.4,15.7,13.8,13.3,10.7,7.4,7.3
1913,6,7.3,7.4,9.9,12.3,14.8,15.6,16.4,15,12.2,9.1,6.6
1914,6.2,7.5,7.8,11.6,11.9,15.3,16.9,17.2,14.7,12.3,8.5,5.3
1915,5.5,5.8,7.7,9.9,12.4,15.3,15.8,16.2,14.9,12.1,6.4,5.3
1916,8.5,5.9,5.6,9.6,12.2,13.4,15.9,17.1,14.6,11.5,8.4,5.5
1917,4.2,6.3,6.5,7.6,12.8,15.2,17.9,17.4,14.7,8.8,8.6,5.6
1918,4.6,7.9,8.3,10.1,13.9,14.8,16.2,16.1,12,10.8,8.2,7.4
1919,5.8,5.3,5.9,9.3,15,14.2,14.8,15.5,13.6,10.9,5.8,6.1
1920,6.5,7.6,7.8,9,12.3,15.8,15.4,14.9,14.4,12.9,9.6,6.5
1921,7.6,8,8.3,11.6,12.5,15.1,17.2,15.2,14.7,13.6,8.9,8.9
1922,6.5,7.7,8.2,8.4,12.5,14.1,14.6,14.7,14,11.1,9,7.2
1923,8.4,7.4,9.1,9.8,10.7,13.1,16.7,15.6,13.6,11.1,6.1,6.7
1924,7.3,7.2,6.8,9.4,12,14.2,16.3,15.4,14,12.1,9.6,8.6
1925,7.7,6.4,7.9,9.8,12.2,15.4,16.9,16.4,13.1,11.8,7.7,5.8
1926,7.5,8.3,8.8,11.9,12.5,15.3,17.1,17.6,15.2,9.8,8.3,7.2
1927,6.7,8,9.7,9.3,12.2,13.5,17.1,17.3,13.8,12.1,8.5,4.9
1928,7.2,8.1,7.9,10.5,13.4,13.6,15.3,16.5,14.7,12.3,8.9,6.6
1929,5.8,5.9,10,9.9,13.8,14.5,16.6,16,15.3,10.8,8.3,7
1930,6.1,5.9,7.5,10.7,12.9,16.6,15.8,16.1,15,11.2,7.9,7.4
1931,6.6,6.6,7.1,9.9,12.7,14.2,15.5,16.4,14.2,11.6,9.6,8.6
1932,8.8,8,8.4,9.6,12.5,16.6,16.6,16.6,14.2,10.6,9,7.5
1933,6.3,6.7,9.3,10.7,13.3,16.8,18.1,17.2,16,12,8.3,6.5
1934,7.6,8.4,7.6,9.2,12.3,15.5,18,16.1,14.8,11.1,8.1,8.9
1935,7.4,7.3,9.3,9.9,13.3,15.2,17,17.1,14.9,10.9,8.3,5.4
1936,5.3,6.2,8.5,9.6,13.6,16.1,16.9,16.6,15.3,12.2,8.6,7.5
1937,6.9,6.4,5.7,10.6,13.7,15.4,16.2,16.5,14.5,11.6,8.7,6
1938,7.3,7.6,10.1,11.1,12.6,14.3,15.3,16.9,14.8,11.7,9.2,6.5
1939,5.4,8,8.8,10.6,12.9,16.3,15.5,17.2,15.6,11.1,9,7.1
1940,4.6,5.8,7.9,10.5,14.3,17.9,16,16.3,14,11.2,8.6,6.8
1941,3.7,5.6,7.6,9,12.4,16.2,16.5,15.5,15.9,12.9,8.9,8.3
1942,6.5,6.3,7.2,11.6,12.9,14.4,16,16,13.8,11,9.3,8.9
1943,7.3,8.8,9.8,11.4,13.1,15.4,16.9,15.8,14.7,12.6,8.8,7.9
1944,8.1,7.2,8.5,11.7,12.5,14.6,17.3,18.1,14.4,11.5,8.1,7.1
1945,4.6,8.6,10.7,11.1,13.3,15.7,16.8,17.5,15.8,13.5,11.1,8.6
1946,7.7,7.9,8.8,11.1,14.4,15,15.8,15.9,14.8,12.4,9.2,7.5
1947,6.5,3,5.5,9.6,13.9,15,16.8,19.9,15.3,13.4,8.4,7.4
1948,6.5,7.8,11.1,11.3,13.6,15.3,16.2,15.7,14.4,11.6,10.4,8.5
1949,7.8,8.7,9.1,11,12.7,16.6,17.5,16.8,16.4,12.9,10,7.4
1950,7.8,7,9.7,9.7,13.7,16.1,17.2,17.3,14.1,11.6,7.5,4.7
1951,6.2,6.3,6.7,8.7,13,15.8,16.4,16,15.2,12.9,9.9,7.4
1952,5.5,6.9,8.5,11.6,14.1,14.3,16.8,16.6,13,11,7.1,6.7
1953,7.5,8.1,10.2,9.8,13.9,16.2,16.4,16.8,15.5,12.7,10.1,9.8
1954,6.8,5.9,8.9,11.3,13.3,15.4,15.1,15.6,14,11.7,9.1,8.3
1955,5.3,5,7.6,12.1,12.3,15.6,18.3,18.3,15.8,11.2,9.4,7.3
1956,6.1,6.2,9.4,10.1,13.5,14.9,16.6,14.9,14.7,11.5,9.5,8.4
1957,8,6.9,10.1,11.5,13.1,16.1,15.9,16.6,13.4,12,8.9,7.8
1958,6.4,6.2,6.5,10.4,12.2,15.4,16.6,16.6,16.8,12.8,10.5,7.4
1959,5.1,9.2,10,11.2,15,16.4,16.6,17,16.6,14.3,9.7,8
1960,7.1,6.5,8.5,11.8,14.9,17.1,17.1,16.6,15.3,11.8,9.4,7
1961,6.5,8.5,10.4,11.1,13.5,14.9,15.5,16.1,15.3,12.1,8.3,5.5
1962,6.9,7.8,6.2,10.4,12.4,15.3,15.9,15.6,14,12.7,8.5,7.4
1963,4,5.1,9.1,10.7,12.4,16.4,16.1,15.2,14,12.5,8.8,6.7
1964,8.3,7.7,8.9,10.9,13.7,15.1,15.9,15.3,14.7,11.9,9.7,6.5
1965,5.9,7,7.9,10.4,12.6,15.3,15.4,15.8,13.6,13,6.6,6.2
1966,5.9,6.7,9.1,9.1,13.1,16.4,16.6,16.3,15.3,11.7,7.6,6.9
1967,6.9,7.7,8.5,10.4,12.2,16,16.2,16.6,15,11.2,8.9,6.8
1968,6.6,5.6,8.6,10.8,11.9,16.5,16.4,17.1,15.7,13.3,9,6.8
1969,6.9,4.5,7.4,10.4,12.4,16.4,16.7,17.1,14.7,14,6.4,6.8
1970,6.5,5.5,6.8,9.2,13.1,17.9,15,16.5,14.6,12,8.2,7.3
1971,7.5,8,8.6,10.8,13.7,14.1,16.6,16.3,16,13.2,8.7,9
1972,6.5,7.1,8.8,10.7,13.1,13.7,16.3,15.7,14.2,13,8.1,8.2
1973,7.7,6.9,9.3,9.3,12.8,15,16.2,17.2,14.9,11.7,8.1,7
1974,7.9,7.3,8.5,12.1,13.2,15.4,15.7,16.5,13.5,10.2,8.1,8.1
1975,7.4,7.7,7.3,10.1,11.7,15.5,16.7,17.8,13.9,12.5,8.7,7.8
1976,7,7.2,8.1,10.8,12.9,15.8,18.1,18.5,14.5,11.9,8.7,5
1977,5.6,6.2,8.8,9.1,12.9,14.4,16.3,17,13.7,12.9,7.8,7.8
1978,5.6,5.5,8,9.3,13.9,14.8,15,15.4,14.5,12.4,9.5,6.9
1979,4.2,4.8,6.2,9.3,10.6,15.1,15.5,15,13.9,12.6,8.4,6.6
1980,5.7,7.2,7.2,11.1,14.1,15,15.6,16.2,15.2,10.3,8.3,7.4
1981,7.4,6.6,8.3,10.7,13.7,14.4,15.7,16.7,15.2,9.1,8.9,4.5
1982,6.1,7.8,8.3,11.2,13.6,16.4,18,16.3,14,11.9,8.6,6.8
1983,7.6,5.7,8.6,8.6,11.9,14.9,18.3,17.7,13.8,11.8,9.9,8.4
1984,5,7.7,7.4,11.7,13.1,15.1,17.2,18.3,14,12,9.1,8.3
1985,4.9,6.8,7.4,10.4,12.5,14.9,16.4,15.6,14.1,12.8,7,7.4
1986,6,4.5,8.2,8.7,12.3,16,15.9,14.9,13.8,12,9.4,7.1
1987,5.6,6.9,7.3,11.3,12.1,13.8,16.3,16,14.7,11,8.9,7.7
1988,6.3,6.9,8.3,10.4,14,15.6,15.6,15.9,14.3,11.6,8.8,9.2
1989,9.5,7.9,8.5,9.2,13.7,15,17.9,16.1,14.6,12.1,8.9,6.6
1990,7.9,7.4,9.3,10.2,14.2,15.2,17.8,16.5,14.2,12.4,8.5,7.5
1991,6.5,6.2,9.4,10.2,12.8,14.1,18.2,17.8,15.3,11.2,8.9,8.6
1992,8,8.4,8.7,10.2,15.5,16.8,16.5,15.8,13.9,10.2,8.4,6.9
1993,7.3,8.3,8.9,10.8,12.5,14.7,15.4,15.5,14.3,10.5,8.6,5.9
1994,6.6,5.9,7.8,9.9,12.5,14.6,17.4,15.9,14.1,11.8,10.8,8.1
1995,6.6,6.9,6.9,10.1,12.5,15.8,18.3,18.8,15,13.4,10,6
1996,7.7,6.8,7.8,10.9,11.8,15.2,16.4,16.8,16.2,12.7,7.8,6.5
1997,7,8,9.9,11.5,13.3,15.2,18.1,19.3,15.4,12.4,10.7,8.5
1998,7.6,9.3,9,9.9,13.9,14.7,16.1,16.4,16,11.5,9.1,8.3
1999,6.9,7,8.8,11.3,13.7,14.5,17.5,17.1,15.8,12.5,9.8,6.5
2000,7.4,7.9,9.4,9.7,13.9,14.9,16.7,17.4,15.8,12.1,8.7,7
2001,6.2,6.8,7.7,10.3,14.7,14.8,15.8,17.3,14.9,13.4,9.6,6.7
2002,8.5,7.6,9.1,11.6,13.9,15.6,15.9,17,16.3,11.5,10.3,6.9
2003,6.7,7.9,10.3,13.2,13.4,16.9,18.3,18.6,15.5,11.5,10,7.5
2004,6.8,7.6,9.4,11.4,14.4,15.9,16.8,18,15.3,11.3,10.3,8.1
2005,7.6,6.9,9.7,11.2,13,15.7,16.5,17.1,15.4,13.3,9.4,8
2006,7.7,7.8,7.3,10.5,13.4,16.7,19.1,16.9,16.7,13.7,9.6,9.1
2007,7.5,8,9.6,12.6,13.1,15.7,16.7,16.4,14.7,13.4,9.9,8
2008,7.2,8.3,7.8,10.5,15,15.6,17.5,17.1,14.8,11,8.7,7
2009,7.2,7.3,9.3,12.1,14.2,16.7,17.9,17.2,15.4,12.7,9.3,6.2
