1901,15.2,13.3,11.2,7.7,4.9,3.9,1.5,2.5,5.5,7.7,10,13.4
1902,14.5,13.2,11.3,8.8,4.8,2.4,0.3,1.2,3.8,6.9,9,12.6
1903,14.1,12.6,10.6,7.5,5.1,2.3,1.3,2.1,4.8,7.3,10,12.2
1904,15,12.9,10.9,8.4,5.1,3.1,2.1,2.5,4.6,6.8,10,12
1905,14.9,13.1,12.2,7.7,3.4,3.1,1,1.8,4.7,6.8,10.1,12.2
1906,14.8,14,12,8.5,5.3,0.7,0.4,2,4.3,7.8,10.6,12.2
1907,13.7,13.5,10.4,6.9,4.2,0.9,1.4,2,3.5,6.8,9.7,10.8
1908,13.6,13.6,11.4,6.5,4.5,2.8,1.3,1.5,3.5,7.6,9.1,11.9
1909,13.9,12.4,10.9,7.5,3.8,1.5,0.7,1.5,3.8,7.3,8.7,11.4
1910,13.3,12.6,10.1,7.3,4.3,0.6,1.1,1.8,4.5,8,10.3,12.9
1911,13.4,12,10.2,6.4,4.2,2.3,1.8,1.2,3.6,7.3,10,12.5
1912,14.8,12.5,10.8,7.8,3.1,2.2,1.8,1.9,4.9,7.6,9.2,12.2
1913,14.6,13,10.7,7.1,3.8,2.1,0.9,1.7,5.5,7.2,10.2,12.5
1914,14.2,14.1,11.2,7.1,4.7,1.6,2.2,1.9,3.6,7,8,12.4
1915,13.5,13.4,11.6,6.8,3.6,1.8,2.4,2.4,5.1,7.7,10.5,12.8
1916,14.2,13.4,10.4,8,5.2,1.1,0.8,2.3,4.4,7.7,10.3,12.2
1917,13.6,13.8,10.8,7.9,4.6,3.1,2,2.4,4.6,8.2,10.8,12.3
1918,13.5,14.2,11,8,3.7,2.3,0.5,2.3,3.4,7.5,8.8,13.7
1919,14.2,13.5,12,7.4,5.7,2.2,2,3.1,3.6,7.3,8.6,13
1920,14.1,13.6,11,8.5,4.7,2.4,0.7,3.3,4.8,6.2,10.1,12.4
1921,13.9,12.8,10.8,8.1,4.5,1.4,1.6,1.9,4.1,7.4,10.6,12.5
1922,13.3,13,10.2,7.5,5.2,1.4,2.3,2.2,4.8,6.8,9.9,13
1923,13.9,13.3,10.6,6.8,4.5,1.8,-0.3,0.9,4.1,5.7,9.7,11.3
1924,14.1,12.6,10.7,7.9,4.3,2.8,1.7,2.6,4.6,8.5,9.8,12.9
1925,13.8,12.7,11,7.3,4.3,2.2,1.5,2.8,5.1,7.3,9.8,13
1926,14.2,14,10.5,7.3,4.9,2.5,0.6,2.6,4.1,6.9,9.8,12.8
1927,14,13.8,11.6,8.5,4.4,2.5,1.5,2.7,3.5,7.4,9.8,12.2
1928,13.2,12.3,10.5,7.3,4.7,1.4,1.4,3,5.2,8.1,10.3,11.7
1929,14.1,13.7,10.7,8.7,4.7,3,2.2,2.1,4.4,7.1,10,11.6
1930,14,13.5,10.7,8.3,4.8,3.6,0.7,1.7,5.1,6.7,10.9,12.1
1931,14.3,15,12.1,8.7,5.1,4.9,1.5,3,5.3,7.2,9.4,13.5
1932,14.9,14.4,11.9,8.7,5.8,4.2,3.5,2.2,4.9,8.4,10.2,12.4
1933,13.9,12.9,10.1,8.9,6,3.8,1,4.2,5.3,7.5,9.7,10.9
1934,14.2,12.4,10.9,8.7,5.7,2.4,2.8,4.2,5.5,7.4,10.9,13
1935,15.1,13.3,12.9,9.7,7.4,3.8,2.6,4.1,4.2,6.2,10.1,10.6
1936,13.7,14.9,11.6,9.2,4.9,2.5,3.6,2.8,4.8,7.3,12.1,10.2
1937,15.8,12.2,9.9,9.5,5.8,4.3,2.6,1.6,5.2,8.7,8.6,13.7
1938,11.8,13.6,9.8,7.9,5.6,3,1.9,2.4,5.1,7.3,9.6,12.4
1939,13.7,12.5,11.4,8,5.9,4.9,4,4.9,6.2,7.6,10,14.9
1940,14.2,14.5,10.7,8.1,6.1,4.9,3.9,3.4,6.1,8.2,10.1,11.5
1941,16.2,13.6,12.7,6.9,4.1,4.3,3.2,4,4.9,9.2,7.7,11.3
1942,14.8,13.2,10.3,8.5,5.2,2.4,1.4,2.2,5.4,8,11.1,14.1
1943,15.6,14.8,10.6,10,6.7,3.1,2.9,2.5,5.1,8.1,10.6,15.9
1944,15.5,15.3,13.3,10.3,5.5,4.2,2.7,0.9,5.3,6.3,10.7,14.1
1945,16.7,14.8,13.1,9.7,6.6,4.2,1.1,2.8,6.1,8.4,9.6,12
1946,13.3,12,11.5,10,5.6,5.2,3.4,4,5.6,8.6,8.7,12.4
1947,12.8,13.6,11.8,8.7,6.3,4.8,2.2,2.8,4.6,8.7,12.2,11.6
1948,14.2,14.2,10.7,8.4,6.5,4.6,1.5,1.5,5.2,8.1,11.3,12.3
1949,16,12.9,9.6,9.9,5.6,3.4,2.7,2.6,5.1,10.3,11.6,12.3
1950,15.9,14.4,11.7,8.3,4.9,3.9,2.5,2.7,3.8,7.2,9.8,11.8
1951,14,11.6,11.1,10.1,7.4,4,3.2,3.9,4.4,8.1,9.1,14.7
1952,15.6,15.4,11,10.2,6.1,2.2,3.9,2.7,6.7,9.3,11.7,15.3
1953,14.3,15.3,12.2,9.8,7.4,4.4,1.9,3.3,5.1,6.3,10.9,14.2
1954,14.4,14.1,14,8.7,5.1,3.1,2.2,3.5,4.6,7.9,11,13.2
1955,16.2,12.7,12.2,9.1,4.9,2.8,1.4,1.7,4.9,9.1,13,12
1956,11.9,14,10.3,9.6,3.9,1.9,3.2,2.6,4.3,8.7,13.4,16.1
1957,15.1,14.5,12.8,7.7,7.2,2.9,2,2.9,5.5,7.3,11.6,12.1
1958,14.5,13.3,12.1,8.1,3.7,2.9,4.7,1.6,4.3,9.5,9.8,12.6
1959,14.4,14.3,11.3,6.1,4.7,2.8,2.4,2.3,4.1,7.2,10.6,13.7
1960,16.8,15,12.4,8.6,5,3,0.3,2.5,4.6,7.1,10.7,13.1
1961,13.4,13,11,7.6,4.6,1.8,2,3.7,3.7,7.9,10.3,13.3
1962,14.8,14.6,12.8,7,5.1,3.3,0.5,3.3,4.7,8.8,12.1,14.4
1963,14.4,15.7,10.7,9.2,3.9,2.4,3.1,3,4.1,8.1,8.5,12.6
1964,15.1,12.1,9.4,8,4.3,2.1,1.6,2.9,4.2,8.9,10.7,12.5
1965,15.1,13.5,12.4,7.2,3.4,5.2,1.4,2.2,3.7,7.3,10.7,11.1
1966,14.3,11.6,11.1,9,5.9,3.4,2,2.1,4,6.2,10.9,11.1
1967,14.3,12.9,11.2,7.5,5.9,0.1,1.1,1.7,4.2,7.2,10.5,13.7
1968,16,14.1,10.5,8.5,6.3,3.8,4.1,3.2,5.9,6.6,11.5,11.5
1969,14.9,12.8,10.8,8.2,5.7,2.2,2.5,2.4,4.7,6.1,9.2,13.9
1970,14.3,13.9,10.9,9.2,5.3,2.4,2.8,1.7,5.3,7.6,10.2,11.3
1971,11.9,12.2,10.4,6.1,4.7,1.2,3.3,2.7,5.4,8.5,11.4,10.9
1972,14.9,13.8,9.7,7.8,5.3,3.1,2,2.6,4,6.1,10.4,13.5
1973,13.2,12.9,11.4,7.4,4.4,3.3,0.9,2.4,4,7.4,10.2,12.7
1974,12.6,13.2,11.2,7.9,6.1,2.2,1.5,2.1,4.1,8.4,9.8,12.4
1975,15.5,12.9,11.1,8.5,5.2,3.7,0.9,1.4,5,7.1,8.9,11.3
1976,13,13.7,9,6.8,5.6,1.8,0.9,2.4,5,7.5,10.7,12.5
1977,14.5,13.2,11.3,9.2,5.7,4,2.6,2.9,5.7,8.8,10,13.4
1978,14.1,15,11.2,8.5,6.1,2.5,4.7,1.6,5.7,7.2,10.7,13.6
1979,16,14.3,11.8,8.7,5.9,2.3,2.4,4.1,3.6,7.1,10.1,13.3
1980,15.9,14.4,12.4,6.3,4.9,2.7,1.8,3.2,5.3,7.9,9.8,13.1
1981,14.1,13.9,12,9.3,5.9,3.8,1.9,2.9,4.1,8.2,9.7,12.8
1982,15.6,12.9,11.2,9.2,6.8,1.6,2.1,3.3,6,7,9.5,14.1
1983,15.9,13.8,11.2,8.4,4.4,1.2,0.8,2.4,3.6,8.5,12,15.2
1984,15.4,12.6,11.6,7,4,-0.2,0.6,2.1,5.5,7.1,10,12.5
1985,14.4,13.6,10.9,6.9,5.2,5.2,2.4,3.1,5.2,7.4,12.6,13.7
1986,13.9,13.6,10.4,8.2,5.4,2.7,2.8,2.7,5,9.6,9.2,13.2
1987,15.5,15,12.3,8.8,4.1,4.1,3.6,2.1,4.6,8.7,11.9,12.5
1988,14,15.9,11.5,8.2,3.8,2.3,-0.4,2.2,4.7,6.8,11.1,12.9
1989,15.5,15.2,10.7,8,3.9,4.3,1.9,2.7,4.8,8.6,11.5,13.2
1990,14.7,15.3,11,7.1,4.8,3.1,2.3,4.1,5,8.5,10.4,13.2
1991,14.6,14.2,11.7,8.1,5.2,2.7,1.8,1.8,5.1,6.4,11.1,10.7
1992,15.4,12.8,13,7.8,4.3,2.1,-0.2,3.3,5.1,7.3,11.1,12.1
1993,13.8,14.6,12.6,9.2,4.4,3.6,0.9,3.6,5.2,8.1,10,12.3
1994,13.6,13.3,12.3,8,6.3,4.9,2.4,2.4,5.3,8,10.7,13.2
1995,13.4,13.3,10.8,8.7,5,3.9,0.2,0.9,5,8,10.8,16.1
1996,13.5,13.7,12.7,7.1,5.1,0.7,2.6,3.7,6,8.4,10.7,12.8
1997,15.1,12.2,12.6,10,6,4.6,3.1,3.5,5.3,7.2,9.8,12.7
1998,14.1,14.7,11.3,8.5,6.6,3.7,2.9,2.9,3.8,8.9,10.7,13.8
1999,16.3,14.8,10.9,7.5,4.7,1.4,1.3,3.6,5.8,9.1,11.4,13.4
2000,14.5,13,10,8.4,5.2,3.5,1.2,2.8,3.5,8.4,9.5,12.5
2001,14,14,11.3,7.2,5.4,3.3,1.7,3,5.3,9.2,9.5,14.7
2002,15.5,14.9,10.1,7.5,5.2,0.9,2.6,3.7,5,7.8,9.9,12.8
2003,14.6,13.1,12.8,7.6,5.1,5.2,1.6,2.6,5,8,10.9,10.8
2004,15.1,15.1,12.1,8.3,3.8,4,2.5,3.2,5,8,10.7,13
2005,13.8,16.3,11.1,6.9,4.4,2.4,2,2.1,4.7,7.4,11.1,12.9
2006,14.3,14.9,10.5,8.3,4.3,4.5,3.1,2.8,4.9,7.9,10.1,12.1
2007,15.1,13.1,11.6,7.7,2.9,1.7,0.9,-0.1,4.6,7.6,10.1,13
2008,15.9,16.7,12.8,7.8,4.2,3.4,3.2,2.5,5.5,8.2,12.3,15.3
2009,15.8,14.2,12.7,9.1,5.5,2.4,1.2,4,4,7.1,7.6,11.9
