1901,21.9,21.6,20,15.5,11.8,7.2,6.5,9.2,14,15.6,19.6,22.1
1902,23.2,22.6,19.5,15,11.3,9.5,8.4,9.3,12.8,17.1,20.7,22.5
1903,23.1,22.7,21.6,16.4,10.8,7.5,7.9,9,12.2,14.2,16.5,20.4
1904,21,20.9,18.4,15.1,11.2,6.6,7.6,9.1,12.3,15.8,20,21.8
1905,22,21.2,20.4,16.5,11.7,8.2,6.3,8.9,10.4,13.2,19.3,21.3
1906,22.2,20.6,18.3,16.1,11.6,9.6,7.8,9.7,12.7,15.5,17.5,20.6
1907,21.7,20.5,18.7,15.3,11.9,10.8,8.2,10,14.6,17.6,19.2,21.6
1908,22.5,21.4,20,16.5,13.1,7.7,8.4,10.4,13.1,15.7,20.6,22
1909,21.8,20.6,19.2,15.3,11.8,10.6,7.7,10.6,12.3,17.3,19.6,20.6
1910,20.7,20.3,18.6,16.2,13.7,10.7,8.2,11.4,13.8,15.8,17.9,20.5
1911,20,19.5,19.1,16,10.8,8,7.6,10.6,14.2,16.2,21.1,23.2
1912,22.7,22.5,19.9,15.7,12.1,10.9,9.3,11.1,13.2,16.4,19.9,21.2
1913,21,21.1,18.9,16.9,11.7,9.3,9.6,9.6,13,18.1,18.7,22
1914,23.6,21.9,20.4,17.6,13,10.8,8.3,10.9,13.3,16.1,21.3,22.8
1915,21,23.4,21.4,17.2,10.9,9.6,10.4,8.9,15,17.5,21.5,20.1
1916,22.6,23,20.8,16.1,12.4,9.7,8.8,9.6,12.7,15.4,16.1,19.2
1917,21.8,19,19.3,15.1,9.9,8.4,8.5,9.4,12.9,16.1,17.7,18.9
1918,19.3,19.9,18.1,15.3,11.1,8.5,6.5,10.5,12.6,16.9,20.1,21.4
1919,23,21.6,20,16.9,13,9.3,7.3,9.1,13.5,17,21,21.9
1920,20.5,20.5,18.6,15.9,11.6,9.2,9,9.5,11.9,15.5,19.4,21
1921,20.3,20.2,18.6,17.2,13.5,11.6,10.2,8.4,12.9,13.9,20.2,19.8
1922,21.2,20.6,19.1,17.6,11.8,9.4,7.3,9,13,17.1,20.5,21.2
1923,22.4,22.2,20.7,15.7,13.3,8.9,7.6,9,13,16.3,18.6,22.8
1924,21.2,20.8,19,14.6,11.3,7.6,9.3,10.3,13.2,15.8,18,18.6
1925,20,22.4,18.2,15,11.3,9.4,7.2,9.9,11.2,15.7,18.4,21.7
1926,21.2,23.9,20.7,17.1,11.3,9.3,8.4,10.8,12.6,17.2,20.1,20.2
1927,20.7,21,18.9,15.2,10.5,8.8,7.7,8.4,12.2,15.9,19.5,18.7
1928,20,21.2,19.5,15.7,10.1,7.5,8.3,11.5,14.1,17.3,19.2,21.1
1929,23.3,21.2,19.5,14.6,10.2,8.2,7,10,12.3,16.1,18.6,21.1
1930,21.3,20.9,18.6,15,11.7,9.9,9.9,10.3,11.6,16.4,19.6,19.6
1931,23.6,20.4,19.9,15.2,13.4,10,7.7,10.5,13.7,15.3,18.2,19.2
1932,23.9,22.8,20.7,15.9,12.3,8.3,8,9.4,12.1,14.9,18.9,20.3
1933,22.8,21.4,21.4,15.8,11.7,9,9.3,8.5,12.7,16.8,17.7,19.7
1934,20.3,20.4,19.8,15.6,11.7,7.7,8.9,9.9,12.8,15,18.3,19.3
1935,21.7,21.5,19.4,14.7,10.6,8.2,7.7,10.3,12.2,16.7,19.9,21.1
1936,21.4,21.9,19,15.3,12.5,8.7,8.6,10.5,12.7,17.9,20,21.3
1937,22.4,20,18.9,14.2,11.8,8.1,8.6,10.6,13.7,17.5,18.5,22.2
1938,21.5,21.5,20.1,16.9,14.3,8.6,7.9,8.7,11.4,16.9,19.1,21.8
1939,23.2,21.1,19.7,15.9,13.3,8.7,6.9,7.6,9.7,14.3,17.8,20.5
1940,23.3,21,19.4,16.4,11.1,8.9,7,9.6,12.8,17.1,18.8,20.8
1941,19.1,19.6,18.8,15.4,12.1,8.8,7.4,7.7,12.7,16.2,19.8,20.4
1942,23.7,19.1,20.1,16.8,12.7,10.3,9.1,9.9,11.7,14.4,17.6,19.1
1943,20.2,20.4,20.3,15.2,12,6.8,6.3,7.4,12.1,15.8,17.2,20.1
1944,21.7,20,18.2,14.1,9.9,8.3,9.2,9.2,11.5,14.4,19.6,21.6
1945,22.4,21.7,19.4,15.6,11.6,11.6,7.6,9.9,11.2,14,18.6,20
1946,22.1,22.1,18,14.1,11.3,6.3,6.6,9.1,10.9,14.5,19.9,21.4
1947,22.2,19.3,20,15.6,13.2,7.8,7.1,9,12.2,14.2,16.7,19.5
1948,18.2,21.3,19.3,14.4,10.1,9.5,7.1,9.3,11.3,14.7,18.1,21.2
1949,20,21.6,19.7,14.6,11.2,7.8,7.5,9.2,11.9,16.9,17.5,21
1950,22,20.4,20.3,16.9,12.1,10.1,10.2,9.6,13.1,15.4,16.8,20.1
1951,19.2,20.7,19.4,13.9,11.1,10.6,7.9,7.6,12.2,14.8,19.2,20.7
1952,24.3,21.8,18.8,15.4,11.7,8.4,8.6,9.8,12.2,15.4,17.2,20.2
1953,20.1,19.4,18.3,16.8,11.1,7.9,7.2,8.4,12.3,15.4,18,22.8
1954,20.1,20.8,20.2,16.7,11.5,8.7,9.9,10.4,11.7,15.1,17.9,19.6
1955,21,21.5,20.1,17.4,11.2,9.9,7.2,8.9,13.4,16.2,17.9,19.2
1956,20,20.2,20.6,16.1,11.3,8.6,7.8,7,10,13.4,16,20
1957,21,20.6,18.6,16.9,10.3,9.9,6.5,9.6,11.8,16.3,20.5,23.7
1958,21.5,21.5,20.4,17.1,13.6,11.3,7.7,10.2,10.6,15.2,19.1,20.7
1959,19.8,19.7,19.3,16.1,11.8,9.2,9.2,8.5,12.5,13.8,18.9,20.1
1960,20.9,21,18.4,16,10.2,6.9,8.3,7.4,11.3,15.8,17.2,18.4
1961,19.4,20.3,18,15.8,10.6,8,6.9,8.7,12.1,16.3,18.8,19.9
1962,19.6,20.8,18.1,14.5,10.1,9.2,9.2,8.2,11.6,14.8,19,18.6
1963,20,22.2,20.3,16.1,13.1,8.8,7,9.7,11.5,14.7,16.9,19.2
1964,21.8,19.9,19.4,15.6,12,8.6,8.5,8.4,12.7,13.4,17.2,19.2
1965,20.8,21,19.6,16.6,11.7,9.7,6.4,9.9,13.5,16.8,19.2,20.1
1966,20.4,21.5,18.6,16.4,10.7,8.8,6.9,9.4,11.8,14.4,17.4,20.2
1967,21.7,20.8,17.6,15.8,12.3,11.9,8.1,8.5,12.3,17.8,18.5,19.5
1968,21.2,20.4,19.4,17.5,11,7.9,7.5,9,12.4,15.5,19.4,19.5
1969,22,21,19.7,15.7,12.8,9.1,9.4,11.8,10.1,16.1,17.1,21.2
1970,21.9,21.3,19.6,16.5,10.4,8.8,6.8,8.8,11.5,15.9,18.3,20.6
1971,21.1,21.2,19,15.2,11.2,8.3,7.2,9.7,12.4,16.5,16.8,20
1972,19.9,18.8,18.9,15.1,12.6,9.5,6.9,10.3,13.9,16.5,19,21.8
1973,22.7,22.1,20.6,17.6,13.5,10.5,11.2,11.4,14.1,17.1,19.4,21
1974,20.8,21,19.7,17.8,12.5,9.2,8.1,8.6,10.6,14.9,16.4,20.7
1975,21.7,20.3,19,15.5,11.7,8.5,9.4,9.9,13.6,14.8,18.7,20.6
1976,20.5,19.6,20.1,15.5,13.4,9.6,9.1,8.7,11.2,14.1,18.8,22.3
1977,21.7,21.5,19.9,16.9,12.6,8.5,7.6,9.7,12,17,20.4,21.6
1978,22.2,21.7,20.1,15.1,12.5,9,7.9,8.8,11.8,14.3,17.5,19.9
1979,22.3,20.5,19.6,17.5,11.6,10.7,7.9,9.5,13.2,16.2,19.9,23.5
1980,23.3,21.7,20.2,17.3,13.8,9.4,7.8,10.7,13.9,18.2,20,20.3
1981,22.3,23,19.9,16.8,12.9,8.9,8.9,8.8,13.9,15.5,17.8,22.1
1982,22.6,21.8,20.2,16.2,12.2,7.5,7,11.3,12.7,15.4,20,21.6
1983,21.8,22.6,20.3,15.8,14.2,9.7,9.1,9.8,14.6,16.7,18,19.4
1984,20.5,20.6,19.3,15.9,11.5,10.8,8.5,9.3,11,15.4,18.8,21
1985,22.6,21.3,19.6,16.1,13.3,8.1,8.3,9.9,11.7,15.2,18.4,20.3
1986,21.2,21.6,19.9,17.5,13.7,9.1,9.5,9,13.4,15.5,17.7,19.8
1987,23,21.8,19,16.2,12.9,11.1,7.8,11.1,12.4,15,17.8,20.4
1988,21.4,19.4,17.9,16.5,12.3,9.6,9.7,10.5,13.8,18.7,18.5,21.5
1989,20.7,20.4,20.3,17.1,14.5,9.8,8.1,8.2,12,16.8,18.2,19.9
1990,22,21.7,19.6,16.9,13.1,9.3,9,8.8,12.6,16.3,20.5,23.2
1991,22.4,22.2,19.6,16.1,14.5,11,7.5,9.8,12.9,17.7,20.1,20.4
1992,22.2,21.6,19.6,16.6,13.3,8.7,8.4,9.8,11.7,15.2,17.9,20.1
1993,23.3,22.1,19.2,17.1,14.1,9.6,10.9,11.1,13,16.2,19.2,20.5
1994,23.4,20.8,17.8,15.9,11.9,9.3,8.6,9.3,12.1,16.3,19.9,21.2
1995,21,20.3,19.8,15.4,13.9,9.8,8.6,11.1,13.7,16.6,20.1,20.3
1996,22,20,19,15.1,13.6,11.2,8.3,10.3,13,16.5,18.6,20.7
1997,20.2,22.5,20.2,16.5,13.5,9.7,9.4,9.9,14.1,16.7,20.7,23.2
1998,22.6,23,21.6,18.1,13.3,10.4,10.5,12.1,15.1,16.2,17.7,21.4
1999,22.1,20.8,20.3,14.7,13.5,9.6,10.1,10.3,13.4,17.1,16.1,17.8
2000,20.1,19.1,20.5,16.9,12.3,8.7,8.1,9.5,14.6,16.6,18.4,21
2001,22.3,21.2,20.1,16,11.3,9.9,8.6,9,12.8,15.6,17.7,21.1
2002,21.6,21.8,19.8,16.6,11.2,9.3,6.6,10.1,13.9,16.8,20.3,20
2003,21.5,21.2,18.6,15.5,11.8,9.9,8.2,10.1,13.6,15.1,17.9,21.2
2004,22.6,22.8,20,17.2,11.3,8.7,8.4,9.8,12.8,17.1,18.7,20.1
2005,22.1,22.3,19.6,17.4,12.4,10.9,9.6,9.1,14.1,18.3,19.9,22.6
2006,22.7,22.3,19.2,15.7,10.2,8.7,8.5,10.2,13.4,16.2,18.8,19.2
2007,21.5,21.3,20.6,16.7,14.2,8.9,7.4,11.1,13.2,17.7,18,20
2008,21,19.6,17.9,14.2,10.9,10.1,8.2,8.2,13.8,16,18.6,20.8
2009,21.6,21,19.6,16,11.8,9.1,8.1,11.4,13.4,16,20.2,21.3
