1901,17.6,17.5,16.9,15.4,13,10.6,11.6,11.1,12.7,14.5,14.9,16.1
1902,17.8,18.6,17.5,16.5,14.1,12.5,12.6,10.8,13,14.7,18.6,19
1903,17.1,18.8,18.8,15.1,12.3,12.5,10.5,11.7,13.5,15.2,16.9,18.8
1904,18.2,18.2,17.6,15.2,11.9,10.5,10.7,11.3,13.8,14.9,16.1,17.1
1905,17.6,18.9,16.4,15.8,14.4,12,11.3,11.9,13.7,16.4,16.3,18.8
1906,16.9,17.1,17,16,14.7,13,12.3,12.3,13.4,15.7,16.5,17.7
1907,17.3,17.8,17.7,15.8,11.9,12.4,10.4,10.3,14.5,14.5,16.2,18.5
1908,18.1,17.5,16.7,16.1,13.5,12.2,11.8,10.8,13.2,14.8,16.9,18.5
1909,18.6,19.4,17.7,15.5,12.3,11.3,11.9,11.5,13.1,13.9,15.9,16.7
1910,18.9,17.8,18.1,16.8,11.9,12.5,10.2,12,13.2,12.9,15.1,16.4
1911,19,18.8,16.5,16,14,10.9,10.3,10.7,12.9,14.3,17.8,18
1912,17.9,19.3,16.7,15.9,15,11.9,9.9,11.1,11,13.7,17.4,17.2
1913,17.7,18.4,18,16.1,13.9,11.6,11.9,12.2,14,15.4,16.3,17.1
1914,18.8,17.2,17.4,15.8,12.5,13.1,13.2,12.4,14.4,15.8,17.1,17.3
1915,19.2,18.8,17.1,17.6,16,11.3,10.6,11.9,14.1,14.6,15.4,16
1916,17.7,17,15.6,15.6,12.7,12.2,11.3,11.3,14.8,14.1,16.4,17
1917,18.2,17.8,17,14.9,10.6,9.8,9.3,10.1,12.2,13.1,14.4,15.8
1918,18.2,17.3,16.5,16,13.6,11.8,9.2,10.1,12.8,14.9,14.7,15.7
1919,16.9,16.6,16.3,15.7,13.9,12,11.7,10.2,13.5,15.1,16.4,16.7
1920,18.5,18.4,16.6,16.3,12.6,11.6,12.4,9.3,11.9,15.1,15.8,17.2
1921,17.5,18.2,17.1,14.9,13.4,10.7,9.1,13,12.5,14,13.9,17.2
1922,18.2,17.7,18.1,15.6,13.5,11.5,10.5,11.6,13.3,14.6,15.6,17.8
1923,17.9,17.7,18.1,16.5,13.9,11.7,9.8,11.2,12.8,14,15.4,18.3
1924,17.2,17.2,17.6,16,13.9,11.6,10.2,10.1,12.6,13.1,14.8,16.6
1925,18.2,18.3,17,16.9,13.3,9.7,8.5,12.1,13.1,13.5,16.3,17.6
1926,17.6,16.3,17.2,15.6,12.5,11.8,10.2,11.5,14.5,15.1,16.2,17.9
1927,17.4,17.5,17.4,16.1,12.5,11.4,9.2,11.2,13.5,14.4,16.4,16.7
1928,17.3,18.8,18.6,17.1,13.7,12.7,11.4,11.3,14.3,14.4,16.1,17.6
1929,18.5,18.5,17.6,14.2,12.3,11.9,10.1,11.3,14.4,16.1,14.9,19
1930,18.4,17.9,17.3,15.3,13.7,13.3,11.6,12.1,12.4,15.4,15.2,17.4
1931,18.5,17.3,17.9,16.4,13.7,11.5,11.9,11.1,12.8,14.6,15.3,17.3
1932,17.3,19.1,18.6,17.1,13.6,12.1,12,11.2,14.8,15.9,16.5,17.9
1933,17.7,18.3,16.6,14.5,12.7,9.9,10.2,10.5,13.2,14.1,14.4,16.3
1934,18.1,18.1,17.4,16.5,13.2,11.7,10.7,11.1,13.6,14.3,15.9,17.4
1935,17.2,18,17.5,14.3,12.1,11.7,11.7,11.2,12.9,15,15.2,17.5
1936,18.1,16.7,16.7,16.7,15.2,12.5,11.8,10.7,12.8,14.3,15.5,16.9
1937,16.7,17.9,18.2,15.5,12.1,11,12.1,11.9,12.9,13.9,14.7,15.5
1938,19.9,17.6,17.5,16.1,12.3,10.5,10.9,10.2,13.7,14.6,16,17.1
1939,17.7,18.7,17.9,15.3,14,11.6,9.2,12.2,11.7,14.7,16,16.8
1940,18.8,16.7,17,16.7,13.8,11.2,12.3,10.9,12.3,14.2,15,18.6
1941,19.5,19.7,17.3,18.8,14,10.9,10.5,12.7,11.7,15.3,16.6,17.9
1942,19.2,18.9,18.3,15.9,13.5,12,9.2,11.3,12.6,15.1,16.1,16.3
1943,17.1,17.7,17.6,15.2,14.4,13.1,10.6,10.1,12.3,15.2,16.5,16.6
1944,18.6,18.6,18.6,15,12.6,11.2,10.4,12.2,14.4,17.1,16.1,17.6
1945,18.2,19.1,17.6,15.5,11.6,11,11.7,13.3,12.7,15.2,16.5,17
1946,18.6,19.9,17.6,15.5,14.2,11.2,11.2,12.2,15.5,15.9,16.8,17.2
1947,19.1,18.9,17,15.1,14.3,13,10.5,11.2,13,13.4,15.2,16.4
1948,19.4,18.9,16.9,15.6,13.7,11.1,12.6,10.8,14.1,14.4,16.4,17.1
1949,18.3,17.5,19.6,16.3,13.6,13.5,11.4,12.3,13.5,14.7,15.5,17.3
1950,19.1,18.8,18.2,16.9,14.8,12.9,12,13.9,14.8,15.6,16.2,17.6
1951,18.1,18.5,17.9,14.3,13.2,10.9,10.5,10.1,13.4,15.2,17.1,15.8
1952,18.2,18.4,18,16,13.2,12.5,11.3,12.9,13.7,16.1,16.7,19
1953,19.3,18.3,18.5,17,14.1,12,11,11.8,14.8,15.8,16.4,17.4
1954,19.5,19,18.6,16.4,13.9,13.4,12.1,13.2,14.8,15.3,15.9,17.3
1955,18.5,18.5,17.6,15.8,14.1,12.2,12.2,12.1,14.4,14.6,15.6,18.5
1956,20.9,19.3,18.6,16.9,13.7,12.2,11.8,10.6,14.5,15.4,15.9,17.3
1957,19.7,19,18.9,16.9,13.6,12.2,11.8,12.5,14.5,17.8,16.8,19.1
1958,20.1,20.2,18.8,16.7,14.9,12.8,13,14.1,14.7,16.9,18.5,19.8
1959,20.1,20.5,18.5,19.4,15.7,12.9,13.5,12.7,16.2,16.8,17.5,19
1960,19.1,18.7,17.9,16.6,13.1,12,11.6,13.3,14.6,18.2,17.5,16.5
1961,19.8,19.4,19.1,18,14.7,13.7,12.5,13.5,17,18.2,18.2,18.6
1962,18.7,18.8,19.2,16.5,13.8,11.3,10.9,12.3,14.8,15.6,16.8,18.3
1963,20.1,19,20.2,16.9,13.8,12,12,12.7,16.1,16.6,17.9,17.8
1964,18.6,18.9,18.2,17.5,14.1,11.9,10.2,13.1,14.9,15.5,15.9,17.5
1965,17.9,19,17.9,17.3,14.6,14.5,12,13.2,16,16.5,18.2,20.1
1966,20.3,21.3,19.1,17.2,14.9,13.5,13.2,12.3,14.1,16.2,17.4,19.2
1967,19,19.7,18.6,17.1,15.2,13.5,12.4,13.7,15,17.7,17.1,16.7
1968,18.9,17.5,18.4,15,11.9,11.4,11.3,11.5,13.2,15.9,17.7,18.2
1969,20,19.9,18.9,16.7,14.9,13.6,12,12.6,15.3,15,18.2,17.2
1970,19,19.6,19.1,17,15.6,14.4,12.1,12.1,14.1,15.4,15.7,19.5
1971,20.7,20,19.6,17,15.1,12.7,12.5,13,13.9,15.2,16.1,18.2
1972,19.3,18.7,19.7,15.8,15.1,14.3,12.6,13.5,15,16.4,18,19.2
1973,20.4,20.8,19,19.7,14.9,14.6,14.1,13.3,14.8,15.7,15.6,19
1974,18.9,19.3,19,16.9,14.5,12.1,11.7,12.5,14.6,15.1,16.8,17.3
1975,17.9,18.9,19.1,15.6,12.9,12.3,10.3,13.6,14.3,14.8,16.1,18.1
1976,19.7,18.5,17.2,17.4,13.7,12.6,11.5,13,14,15.1,17.3,18.6
1977,19.2,19.9,19.5,17.4,14,13.6,14.7,13.4,15.3,16.9,17.2,17.6
1978,19.9,18.7,19.2,16.1,13.5,12.3,13.3,13.8,14.5,16.1,17.2,18
1979,17,18.5,17.6,15.9,14.7,11.6,11.4,13.9,13.5,16.3,17.1,18.9
1980,18.5,19.2,19.3,17.5,14.9,11.8,13,12.6,13.6,16.3,16.2,19.6
1981,19.2,18.8,17.8,16.7,14,11.5,11.2,12.9,15.6,15.6,18.3,18.8
1982,17.8,18.9,18,15.6,13.4,13.7,13,13.7,14.4,16.1,19.4,18.3
1983,20,19.9,18.9,17.4,15.8,13.5,13.1,12.1,13.5,16,18,18.7
1984,20.2,20.4,19.1,17,16.6,14.4,13.6,12.5,14.3,17.3,17.4,18.2
1985,18.5,20.2,20,18.3,14.3,11.9,11.4,13.6,14,16.5,17.3,18
1986,20,19.7,19.7,18.6,16.3,13.5,11.9,13.8,14.4,16.1,18.3,19.2
1987,20.2,19.5,18.7,18.9,14.2,11.9,13.7,12.1,13.5,16.6,18.4,19.6
1988,21.4,19.8,19.6,17.7,15.7,12.1,10.8,12.5,15.3,16,16.6,18.9
1989,19.4,20,20,18.7,14.6,12.9,11.3,13.2,14.6,14.5,17.7,19
1990,21.1,19.7,20,19.7,15.2,13.1,12.8,12.4,13.8,17.8,19.9,17.7
1991,19.3,19.8,19.6,17.8,15.5,14.1,12.8,12.7,14.1,15.3,18.6,19.5
1992,18.4,19,19.1,18.2,16.2,14.3,12.6,12.2,13.6,14.8,17.4,17
1993,19.8,17.8,18.9,17.7,14.4,12.9,13.9,12.4,14.2,16.7,18.3,17.3
1994,18.7,19.7,18,17.5,16.2,12.6,11.8,12.2,14.9,16.6,18.5,19.3
1995,20,19.6,19.4,17.7,15.4,13.5,13.8,15.3,14.5,15.1,18,17.8
1996,19.7,19.3,20,18.7,14.4,13.6,11.9,12.3,13.6,16.4,17.7,19.7
1997,18.9,19.4,18.7,17.5,13.7,12.7,13.4,13.2,15.6,18.2,19.3,20.5
1998,21.2,20.6,20.2,18.4,14.7,12.8,12.6,14.5,15.3,15.4,17.7,19.1
1999,19.9,19.4,19.9,17.1,13.8,13.1,12.3,12.1,14.9,14.1,16.7,18.2
2000,19.2,18.8,18.7,17.7,14.2,13.3,11.1,12.3,14.5,17.8,17.9,18.8
2001,21,20.9,20.4,19.3,15.3,14,13.5,13.5,14.9,17,18.3,18.8
2002,20,18.8,20.7,19.6,16.2,15.3,12.9,15.2,14.5,19.3,18.7,19.9
2003,18.8,21.5,19.7,18.5,15.2,15.1,13.7,12.4,15,17,18.2,19.6
2004,19.4,18.5,18.5,18.2,14.7,13.2,12.3,13.1,17,16.5,18.2,18.6
2005,19.8,19.5,19.6,19.2,16,14.4,13.1,14.5,14.8,18.1,17.3,18.1
2006,21,20.6,19.6,17.9,14.3,13.3,13.8,14.2,14.9,16.8,17.6,19.4
2007,19.9,20.1,20.8,18.8,14.9,14.6,13.1,13.7,16.2,18,17.8,19.6
2008,19.1,19.6,19.1,18.8,14.8,13.7,13.4,14.3,14.7,17.7,17.7,18.4
2009,19.7,20.4,20.3,17.9,15.9,13.1,13.6,13.6,16.3,16.9,20.2,19.3
