1901,17.2,15.8,13.8,10.1,5.8,4.5,2.5,4.4,7,10.7,12.8,15.6
1902,16.6,15.5,13.3,11.2,6.2,2.2,0.3,3.1,5.4,9.9,12.3,15.5
1903,16.9,15.2,12.7,9.5,6.8,2.6,2.2,3.5,6.6,10,12.8,15.2
1904,18.2,16,13.6,10.8,6,3.7,2,4.1,7.1,10,12.9,15.4
1905,17.6,15,14.9,10.1,3.7,2.1,0.7,3,6.5,9.3,13.3,14.7
1906,17.4,16.3,13.7,9.2,5.2,0.6,1.1,4.2,6.4,11.3,13.3,13.9
1907,16.6,16.2,13.1,9.5,5.5,0.8,2.3,3,5.2,9.7,12.4,13.3
1908,16.1,15.7,13.6,8.3,5.4,3.4,1.9,2.9,6.3,9.8,11.1,14.3
1909,16.4,15,13.2,9.9,4.8,1.7,1.5,3.7,6.5,9.9,11.5,13.6
1910,14.8,15.1,13,8.1,5.3,1.7,1.6,3.8,7.2,11.6,13.3,16.5
1911,15.8,14.3,13.1,8,4.9,3.1,2.7,3.3,5.8,10.4,12.5,15.8
1912,17.8,14.8,13.4,10.3,4.5,2.7,3.8,3.5,7.5,10.5,12,15.3
1913,17.5,15.4,13.6,8.9,3.7,2,1.3,2.5,7.9,10.6,12.1,15.6
1914,15.9,16.3,13.9,8.8,5.5,1.5,2.1,3.1,5.5,10.3,10.2,15.7
1915,15.8,15.6,14.3,7.7,4,1.4,3.4,4.2,7.3,10.7,12.2,14.9
1916,16.8,16.3,13,10.1,6.6,1.7,1.7,4,6.9,11,12.6,15.3
1917,16.3,17,13.4,10.2,5.9,3.5,3.3,3.6,7.5,11.7,13.8,15.7
1918,16.2,17.4,13.5,10.1,4,2.6,1.1,3.2,5.8,11.1,12.1,16.4
1919,17.3,16.4,14.3,8.6,5.8,2.7,2.7,4.3,6.2,10,11.7,15.6
1920,16.5,16.6,13.1,11,5.4,2.9,1.8,5.3,7.2,9.4,12.9,15.5
1921,16.3,15.5,13.6,10.4,5,2.3,2.6,3.5,6.4,10.3,13.4,16
1922,15.8,15.5,12.8,9.8,6.3,1.6,3.5,4.3,7.6,10.1,13.3,16.2
1923,16.7,16.5,13.2,8.6,6.1,2.4,0.1,2.1,6.2,8.6,11.9,14.4
1924,16.9,15.3,13.4,9.8,5.2,3.8,1.8,4.1,6.5,11.3,12.2,15.8
1925,15.8,15.6,13.7,9.4,5.3,1.8,1.9,3.9,7,10.2,13,15.6
1926,16.4,16.2,12.5,8.5,5.7,2.5,1.3,4.4,6.2,9,12.3,16.1
1927,16,16.9,14.4,10.9,5.4,2.6,2.2,4.3,5.9,10.7,12.7,15.2
1928,15.8,14.8,12.8,9.4,5.6,1.4,2.3,5,8.2,11.5,12.9,14.4
1929,16.9,16,13.5,10.9,5.9,3.5,3.3,4.1,6.8,10.6,12.4,14.5
1930,16.6,16.1,12.6,10.5,5.6,2.8,0.5,2.6,7.8,9.6,13.7,15.3
1931,17.1,16.9,13.4,9,5.3,3.4,2.4,5.2,6.5,11,12.2,15.5
1932,16.5,15.7,14.2,9.9,7.1,2.9,3.2,3.4,7.8,10.5,13,14.3
1933,14.4,14.5,12.5,10.9,6.9,3.6,3.3,5,7.4,9.5,11.5,12.5
1934,16.9,13.1,12.2,10,6.1,1.7,4.5,5.4,6.6,11.1,11.4,14.1
1935,16.3,14.7,15,10.2,7.5,4.6,2.2,4.3,5.4,8.8,12.6,13.8
1936,15.3,16,13.2,9.4,3.3,2.2,4.1,3.7,6.6,9.2,13.9,15.6
1937,17.4,14.8,12.1,10.1,5.2,3,2.6,2.6,7.8,9.9,11.5,14.8
1938,13.4,16.3,12.5,9.5,7.1,4,3.4,3.6,6.6,10.8,11.6,15.1
1939,16.1,15.5,12.7,8.4,3.4,3.4,3.4,2.7,7.1,9.9,11.6,14.9
1940,16.5,16.5,13.2,9.1,5.4,3.5,4.5,4,7.4,10.8,12.7,13.9
1941,17.3,14.9,13.1,7.4,4.5,5.1,4.4,4.5,6.6,10.9,11.1,13.5
1942,17,16.8,11.2,9.4,4.6,2.8,2.2,3.5,6.6,11.1,13.8,17.3
1943,16.9,17.2,13.2,10.5,7.7,2.9,3.5,2.8,7.5,11.4,13.3,17.7
1944,16.2,16,15,9.8,7.6,1.5,2.9,3.2,7,9.8,12.6,15.8
1945,18.9,16.7,14.7,10.2,5.9,2.9,2.4,4.8,7.4,11.9,11.9,14.9
1946,15.9,15,12.5,10.4,5.3,2.5,3,3.2,6.4,11.2,11.1,14.3
1947,14.6,15.2,12.6,9.4,5.5,4.2,3.4,4.8,7.1,11.6,14.6,14.1
1948,15,15.7,12.4,11.2,7.1,5.7,1.6,2.2,6.8,10.7,13.3,14.5
1949,17.7,14.5,12.5,10.7,5,3.8,3.5,4.5,7.4,10.6,14.1,14.6
1950,16,16.7,14.4,9.8,4.8,5.1,4.7,2.3,5.1,9.6,10.5,13.6
1951,15.9,14.6,12.4,11,6.2,2.2,2.7,6,4.9,9.5,11.1,16
1952,16.8,16.6,11.6,10.7,6,1.1,4.2,3.9,8.6,11.2,14,17
1953,16.2,17.9,13.6,9.2,6.2,3.4,2,4.4,6.3,9.4,12.6,16.5
1954,15.9,16.3,14.6,8.5,4.9,0.8,2.1,4,5.4,9.8,13,15
1955,16.7,14.9,13.2,9.2,4.8,1.5,1,3.3,5.8,10.9,14.2,14
1956,13.9,15.2,13.2,7.1,4.5,4.2,4.3,4.8,6.1,11.9,15.6,16.2
1957,16.8,16.2,15.3,9,5.7,3.1,2,2.8,6.9,9.5,13.6,15.4
1958,17.5,14.2,14,9.6,4.5,2.3,5.3,4.2,6.3,12.5,12,14.7
1959,16,16.8,12.7,7,4.5,2,3.5,5.6,7.9,12.7,14.9,17.8
1960,18.4,17.2,13.2,9.9,6.9,1.1,2.6,4.6,6.6,10.4,13.7,14.7
1961,15.8,16.1,13.1,8.5,6.3,1.1,0.5,3.7,5.6,10.5,12.8,15
1962,16.4,16.8,15.1,9.2,6.8,3.9,3.4,3.9,7.2,12.1,13.6,16.4
1963,15.6,17.9,12.6,9.3,6.1,3.2,3.4,2.9,4.4,9.9,11,15.8
1964,17.9,14.2,12.3,9.3,5.8,0.6,3.8,3.8,5.8,11.2,12.8,14.8
1965,16.8,15,14.4,8.8,4.3,4.6,0.5,4.4,6.9,10.3,13.6,13.2
1966,16.7,13.3,13.9,10.6,7.7,3.2,1.3,4.1,6.3,9,13.3,14.5
1967,15.9,15.4,13.6,10.8,6.2,1.8,3.2,3.2,7,9.1,14,16.2
1968,16.9,14.7,12.8,10.4,8.1,3.9,5,5.6,6.8,9.2,14.4,13.5
1969,16.9,15.3,13.9,10.3,6.1,3.3,2.5,4.7,6.5,9.2,12.8,16.7
1970,16,17,13,10.1,5.8,2.9,4.1,3.6,8.4,10.9,13,13.8
1971,13.4,14.2,12.6,9.1,4.8,0.8,3.2,4.3,8,11.3,13.4,12.8
1972,16,14.9,11.7,11.7,3.2,1.4,2.1,2,6.7,8.7,13.6,16.7
1973,15.2,16.3,14.2,8.7,5,3.1,0.3,4.7,7,10.7,13.5,15.5
1974,15.3,14.8,13.9,10.5,4.8,2.5,3.2,4.3,6.9,9.4,11.9,14.9
1975,17.6,16.1,13.3,9.9,5.5,3.9,2.4,3.9,7.2,11.3,11.3,14.3
1976,15,15.7,11,9.1,6.7,1.2,2.5,4.2,6.9,9.6,12.6,13
1977,15.9,15.2,13.7,10.9,6,3.6,1,3.6,7.7,10.8,12.6,16.7
1978,17,17.2,14,10.7,5.7,2.9,3,4.2,7.4,9.8,12.4,16.5
1979,18.6,17.4,13.6,10.9,5.6,4.5,4.2,4,5.7,9.6,11.4,16.5
1980,17.9,15.5,14.3,6.7,6.4,3.4,1.9,4.4,8,11.1,12.4,15.5
1981,16.3,16.7,12.7,9.7,5.7,3.2,3.9,4.9,6.5,11.4,12.6,15.5
1982,18.6,15.8,13.6,11,7.4,0.5,-0.3,3.8,6.5,9.3,12.5,17.1
1983,18.6,16.4,13.5,10.1,6,2.3,3.7,4.3,6.8,11,15.1,18.1
1984,17.9,15.4,13,9.8,3,-0.7,-0.3,3.2,7.7,10.7,13.5,14.2
1985,17.9,16.9,12.4,9,6,3.6,3.9,5.2,8.3,9.6,14.7,16.3
1986,16.6,15.7,12.4,8.5,5.5,3.1,4,4.1,7,10.8,12.1,16
1987,17.7,16.7,14.6,10.8,5.3,5.2,3.2,2.9,6.3,10.9,14.1,15.8
1988,16,17.3,14.1,8.8,5.9,4.4,2.5,2.5,7.3,9.4,14.3,15.2
1989,16.9,17.5,13.7,10,6.5,4.2,3.7,3.6,6.9,12,14.4,16
1990,16.8,17.9,14.3,8.1,6.3,5,5.2,5.3,6.9,12.1,13.6,16.1
1991,17.8,17.2,13.9,10.4,6.7,2.3,1.8,3.6,7.2,9.9,13.6,13.2
1992,18.6,15.5,13.9,10,6.2,1.6,0.8,5,7.2,10.3,12.6,15.4
1993,17.2,17.6,14.7,9.4,5.1,2,2.9,6.6,8.4,11.7,13.3,15.9
1994,18.1,15.5,14.1,9.5,6.5,3.6,2.5,4.7,6.9,9.6,12.5,16.3
1995,15.5,15.2,12.9,10.3,6.8,1.5,1.3,1.6,7.3,10.2,13.6,18
1996,15.8,14.7,13.8,9.4,7.9,1.9,4.1,4.9,9.2,11.1,13.5,14.6
1997,17,14.5,13.7,10.5,5.7,3.3,3,4.3,5.6,9.8,12.1,14.4
1998,16.8,16,13.6,10.1,7.3,4.3,6.6,6,6.5,11.1,13.9,16.2
1999,18.2,16.6,12.6,10.1,5.8,2,3,5.2,7,12.1,14.2,16
2000,17.2,15.1,12.6,10.5,5.8,2.3,1.6,3.2,4.3,10.5,11.6,14.3
2001,16.3,17.2,12.5,9.5,5.4,3.5,-0.4,4.8,6.6,11.5,12.7,17.1
2002,17.2,17.2,10.9,9.5,4.2,0.4,3.6,3.4,6.7,9.9,11.8,16.2
2003,16.3,15.9,14.1,8.8,7.3,3.8,4.7,5,7.5,10.5,12.4,13.8
2004,16.6,18.2,15,9.7,5.5,5.8,2.7,4.5,8,10.8,13.4,16.2
2005,16.4,18.6,13.5,10.3,4.9,2.1,3.3,2.8,7.9,10.1,12.4,15.4
2006,16.8,16.5,13.5,10.2,6.7,3.4,3.3,3.8,7.3,10.3,12.5,15.1
2007,16.7,15.4,13.6,10.6,5.3,2.7,2.1,3.5,7.6,10.9,12,16.5
2008,18.6,19.1,15.4,9.4,5.4,3.7,3.6,2.8,7.4,11.2,14.1,17.5
2009,17.9,16.8,14,10.8,6.5,4.3,3.6,4.9,7.4,9.5,10.4,14.5
