1901,21,21.3,19.2,14.5,14.5,12.9,11.5,12.7,17.5,18.7,18.9,21.1
1902,21.1,22,19.6,17.8,15.2,14,10.7,9.3,16.2,17.2,18.8,21.2
1903,21.5,22.4,17.9,15.3,12.6,11.9,10.3,12,17.2,16,18.2,19.5
1904,20.7,20.7,19,17,12.5,11.1,11.9,12.4,16.3,16.6,18.8,19.5
1905,20.4,20,19.4,15.1,13.3,12.9,9.7,12.5,15.7,19.2,18.3,20.5
1906,21.9,22.9,20.9,17.9,15.7,10.2,11,12.4,15.1,18.2,19.2,20.4
1907,21.5,22.1,21.1,16.4,11.9,10.8,10.3,10.7,15.9,17.4,19.5,21.7
1908,22,21,19.3,15.8,13.3,12.7,11.4,11.1,15.2,17,19.5,20.7
1909,22.3,20.5,18.6,17,10.9,10.2,9.8,14.3,16.3,17.1,18.8,19.9
1910,21.5,20.4,18.2,16.9,13.3,12.6,10.1,13.6,15.2,16.8,19.5,19.8
1911,22,21.9,18.4,16.1,14.2,9.9,10,11.6,14.5,16.4,19.4,21.2
1912,21.9,23.1,20.3,16.8,13.8,12.4,8.8,12,14.9,18.1,19.4,22
1913,19.5,20.3,17.7,16.8,13.3,10.2,12.4,12.3,14.5,17.5,18.8,19.7
1914,21.1,20.4,18.4,16,11.6,12.3,13.4,9.5,13.3,16.6,17.3,19.5
1915,21.5,22.2,16.8,17.9,14.9,7.1,9.5,13,13,16.7,17.7,20.4
1916,20.7,19.2,17.2,16.9,12.9,8.2,6.9,11.2,15.9,16.7,19.7,19.8
1917,22.5,20.3,17.4,14.8,11.1,10.3,8.1,11.1,15.3,15.5,17.5,21.4
1918,21.2,19.4,17.9,16,11.4,10.1,9.1,11.9,14.7,16.8,19,20.3
1919,21.9,20.5,19.3,17.5,15.6,11,11.1,10.5,10.6,17.4,18.9,21.3
1920,21.6,21.2,20,17.6,14,9.9,7.1,11,14.5,16.8,19.6,20.4
1921,21.3,20.9,18,16.2,15.3,8.4,8,12.1,13.6,17.2,18.3,22.1
1922,21.1,21.1,18.2,16.3,12.9,8.1,11.4,11.6,14.6,14.9,19.3,20.5
1923,21.5,21.6,18.4,17.5,10.7,11.4,7.7,12,15,16.5,18.8,20.7
1924,20.8,21.7,19.1,15,11.6,11.2,8.9,10.1,13.1,16.1,17.9,22
1925,21.3,22.1,19.6,17.2,12.8,9.4,8.5,14.7,15.3,16.2,19.5,21.4
1926,22.5,20.6,20.7,16.8,12.4,12.8,9.4,11.4,13.9,17.1,18.1,18.7
1927,20.4,21.7,18.9,16,12,7.4,9.1,10.7,13.2,16.2,17.9,18.7
1928,19.9,17.9,17.9,17.2,11.7,7.9,8.1,10.8,13,16.5,17.8,18.4
1929,21.5,20.8,17.5,16.8,11,7.9,8.4,9.8,13.8,15,18.2,20.1
1930,20.6,19.9,19.1,17,12.1,15.3,9.2,10.6,12.9,16.4,16.7,20.2
1931,21.1,21.9,19.6,15.7,9.3,8.4,9.3,11.2,12.4,17.8,16.5,21.6
1932,22.5,21.6,18.6,16,10.4,11.5,13.1,10.5,14.7,17.7,19.5,21.3
1933,22.9,20.5,19.1,16.8,13.2,10.6,7.2,13.5,14.4,17.7,18.7,20.5
1934,22.4,18.7,20.7,13.8,13.5,13.9,10.5,12.1,14.7,16,18.6,21.1
1935,21.9,22.8,21.8,16.5,16.4,12.3,9.7,12.8,13.7,16.1,18.8,21.7
1936,23.1,21.1,19.5,17.4,15.1,11.7,10.1,10,15.3,18.3,20.4,20.4
1937,22.1,22.4,19.6,15,12.5,13.7,10.1,14,13.7,16.4,20.8,21.5
1938,21.1,20.2,18.6,14,13.4,10.9,11.4,9.7,15.1,16.9,19.6,21.3
1939,23.1,20,16.4,12.7,13.9,13.2,9,13.7,13.6,18.1,17.8,19.5
1940,21,20,17.2,16.9,15.6,12.4,11.9,11.5,13.9,16,17,21.7
1941,20.2,18.3,15.8,15.3,12.3,10.2,10.3,12.5,10.2,17.1,17.5,21.1
1942,21.9,20.8,16.6,15.5,11.2,6.4,6.2,12,14.2,15.8,19,20
1943,20.2,19.7,17,14.7,14.5,11.5,12.4,7.7,13.5,17.7,17.9,19.4
1944,20.4,20.1,17.6,14.8,13.6,11.8,12.6,14.1,16.6,18.8,16.1,20.4
1945,20.3,20.3,17.6,16.4,11.9,10.5,10,16.8,15.5,19.1,18,20.2
1946,20.5,22.7,17.8,17.1,14,8.5,8.5,13.8,17.4,17.6,21,20.7
1947,23.1,21.2,18.7,16,13.1,13.6,7.9,10.8,13.6,16.7,19.7,23
1948,24,21.6,18.9,15.9,14.1,12.9,11.4,12.2,17.1,18,19.3,22.5
1949,21.4,22.4,20.5,17.1,15.4,12.1,8.9,12.6,14.9,15.7,20.2,21.3
1950,19.7,20.9,18.3,17.2,14.6,11.8,10.6,14.6,14.3,17.2,19.5,22.3
1951,22,19.1,18.8,13.1,14.8,13.4,13.3,13,16,18.7,18.5,19.3
1952,22.9,20.9,20.7,14.3,15.1,6.6,11.4,12.8,13.5,17.5,17.7,21
1953,22.1,22.3,20.6,15,13,10.2,6.3,15.5,17.6,15.7,19.6,20.3
1954,20.6,20.9,18.4,16.2,10.6,10.1,8.5,12.2,13.7,16.4,21.1,21.8
1955,23.8,22.4,16.4,15.6,11.8,11.6,6.3,11.9,14.9,15.4,19,19.5
1956,18.9,18.7,17.4,14,8.5,8.4,9.2,9.9,13.9,15.9,15.8,19.2
1957,20.3,18.5,19.1,14.2,14.3,9.9,6,12.1,11.3,16.8,17,20
1958,20.9,21.4,17.5,14.8,11,12.8,12.7,8.4,14.3,16.5,18.7,18.2
1959,19,20.1,18.3,14.6,11.8,10.4,11,10,13.5,16.4,16,18.7
1960,20.9,19.8,17.4,14.6,10.3,10.8,8.8,11,14.2,16.5,17.3,20.3
1961,22,20.6,18,17.2,14.7,11,10.3,15.3,15.2,18.4,19,20.9
1962,19.6,19.3,18,15.6,11,6.3,4.1,9.3,14.4,14.5,18.8,21.3
1963,22,21.6,19.4,16.7,14,11.5,12,13.3,15.6,18.5,19,21.3
1964,21.3,21.5,18.4,17.3,15,7.9,5.4,10.7,14.5,15,17.5,18.6
1965,19.8,21,15.5,15.2,13.7,15.4,9.5,13.5,12.8,17.5,18.3,19.8
1966,21.3,19.5,17.5,16.3,12,11.8,9.1,7.5,12.5,17.4,19.7,20.2
1967,20,21.2,17.1,16.2,17.3,7.2,10.8,12.2,14.3,18.9,17.3,20.4
1968,19.8,20.6,17.3,11.6,8.9,11.7,12.1,13.6,13.6,18.2,20.9,21.7
1969,20.9,21.2,18.8,16.2,15.4,10,11,9.2,15.8,16.7,20,19.2
1970,21.4,20.3,19.3,18.6,13.8,10.6,9.3,11.4,15,17.4,17,22
1971,21.5,20.9,18.2,14.6,11.5,6.9,10.7,11,16.3,15.8,17.8,21
1972,21,20,17.5,13.6,15.3,12.9,8.7,11.3,14.8,16.2,18.5,20.5
1973,22.8,22.6,19.9,17.2,13,11.2,8.3,8.8,13.2,17.5,17.8,19.7
1974,22.7,20.5,18.1,14.7,12.4,10.6,11.7,11.2,12.4,15.6,18.2,20
1975,20.9,22,19.4,16.7,13.7,13,7.5,11.1,14.6,16.7,18.2,20.4
1976,21.9,20.3,17.3,13.1,11.3,9.5,8.7,10,14.2,17.2,18.8,21.3
1977,21.6,22.3,20.6,15.8,12.2,11.8,11.4,11.1,15.9,18.1,18.5,21.4
1978,21.9,20.6,20.2,14.8,11.4,11,13.1,10.1,14.7,18.5,19.7,20.8
1979,22.2,20.2,18.1,14.3,13.2,10.7,11.4,16,13.2,19,18.5,20.7
1980,20.2,21.1,21.2,18.3,14.9,11,8.6,12.7,12.2,17.3,17.5,21.3
1981,21.3,21.4,18.6,17.5,16.4,9.3,8.7,13.2,12.2,16.8,18.7,20.9
1982,20,20.6,18,17.1,13.3,12.6,11,13.8,16.5,17.2,19.5,20.7
1983,22.2,20.6,18.8,16.9,14.2,7.7,8.5,10.9,12.5,17.2,17.4,21
1984,21.4,22.4,19,14.1,14.4,9.5,10.6,8.8,14.8,19.7,18.2,19.2
1985,20.3,21.4,19.6,16.5,14.8,10.8,8.9,11.1,13.5,18.3,19.6,21.1
1986,21.7,20.8,17.5,17.7,13.7,11.9,9.9,13.7,14.3,16.2,19.3,20.7
1987,21.7,20.1,17.9,16.6,8.8,8.3,11.9,10.3,12.3,17.1,19.4,19.9
1988,21.4,18.9,19.9,15.8,9.7,8.8,6.3,12.7,14.1,16.1,18.7,21.1
1989,21.6,21.7,17.7,15.9,11.7,12.8,9,12.2,11.9,16.4,18.3,20.3
1990,21.7,19.4,19.6,17.3,11.4,8.7,7.2,13.8,12.5,18.3,20.1,20.9
1991,20.5,20.4,19.8,17,15.2,12.2,9.9,11.8,14.7,16.3,17.3,20.9
1992,20.5,20.6,18.2,16.3,14.7,14.3,7.7,12.5,14.1,17.2,17.1,21.1
1993,22.3,18.9,20.1,17,12.9,11.4,9.7,12.2,13.9,18.1,19.1,20.8
1994,20.7,20.6,17.1,16.9,16.6,13.6,10.4,13.2,16.8,18.6,19,22.1
1995,22.2,19,18.2,14,12.3,11.5,10.1,11.9,14.9,16.8,19.2,20.6
1996,21.6,21,17.6,16.5,15.5,8.3,6.9,13.6,13.1,17.3,19,20.9
1997,21.7,20.9,18.1,16.3,14,10.8,11.4,13.9,16.7,18.2,21.6,22.8
1998,22,21,17.6,16.6,12.5,12.1,11.7,11.4,13.5,16.9,18.2,19.1
1999,19.5,23.6,19.6,14.9,12.6,10.8,8,10.7,15.9,16.7,16.1,19.2
2000,21.6,21.1,19.2,17.8,13.1,12.2,6.5,13.9,13.5,19.4,17.9,19.3
2001,21.5,22.7,20.2,17,11.6,11.2,11.3,13.8,14.9,18.4,18.8,19.5
2002,21.1,21.2,21.5,16.5,15.9,9.8,8.9,12.5,14.1,19.8,19.5,20.8
2003,21.8,20.5,19.5,15.4,12.8,13.6,9.3,9.6,14,18.5,19.1,20.1
2004,21,20.3,18.5,17.6,8.5,10.6,10.7,11.8,15.2,17.6,18.3,21.7
2005,22,20.9,18.3,15,12.9,14.9,9.8,12.9,12.1,17,19,21.2
2006,22.5,21.5,19.3,17.6,10.8,13.9,13,12.5,13.4,19.3,19.3,21.8
2007,22.8,22.5,19.7,18,10.3,10.4,6.2,9.7,16,21.4,18.2,21.1
2008,21.6,20.3,18.5,14.7,12.2,9.3,13.8,11.9,13.6,18.4,19.3,21.3
2009,19.9,21.2,20,17.5,14.4,8.9,7.9,13.3,15,18.6,22.4,22.6
