1901,21.8,19,18.5,17.8,14.2,11.4,10,11.6,13.1,15.4,19.4,20.5
1902,19.7,19.2,20.9,18.7,14.1,10.9,9.8,11.8,13.3,14.5,17.6,18.8
1903,22.1,19.9,18,14.9,13.6,12,10,11.4,12.3,14,17.2,18
1904,20.1,19.6,18.7,17.8,12.6,11.3,9.8,11.4,12.8,14.2,18.3,20.5
1905,20.4,19.1,18.3,16.2,14,9.9,10.1,10.1,12.3,14,18.2,21.4
1906,22.3,21.6,19.7,18.1,14.6,12,10.3,10.7,11.5,15.2,16.6,20.6
1907,19.2,21.5,18.1,16.3,13.5,11.5,11,12,13.6,14.8,16,18.7
1908,21.2,20.1,18.2,15.4,12.8,9.5,10.1,10,12,14.7,17.9,21.2
1909,20.4,19.8,19.1,15.1,13.1,11.2,9.3,10.9,13.1,15.1,17.4,20.5
1910,21.4,20.4,19.2,18.1,13.7,11,9.9,11.5,13.3,12.9,17.1,18.8
1911,21.6,19.6,18.3,17,12.7,10.4,10.8,10.9,12.5,15,19.9,19.4
1912,21.7,23.1,21,16.9,14.8,11.1,10.8,11.9,12.6,15.5,17,21.3
1913,19.7,21,18.3,17.3,13.3,12,10.9,11.6,13.4,15,18.6,19.1
1914,21.3,20.9,19.6,16,13.6,11.6,10.4,12.7,14.8,18.3,17.4,20
1915,19.9,20,18.1,17,14.3,13.3,11.2,11.5,11.7,15.1,18.7,20.3
1916,19.8,21,19.8,15.4,14.7,10.6,9.2,10.7,14.4,13.9,17,18.6
1917,20.2,18.9,17.8,15.7,12,11.1,10.9,10.3,11.7,13.3,16.7,18.2
1918,20.8,19.8,18.1,17.4,13.5,12,10.7,11.1,14.9,14.8,19.5,20.1
1919,21.3,21,20.9,16.4,13.1,12.1,12.8,11.6,12,14.1,17.4,19.4
1920,20.8,19.9,19,15.5,13.4,11.5,9.7,10.5,13.6,15.6,18.7,19.7
1921,21.1,23.2,20.7,17,15.1,12.1,11.8,11.8,13.1,15,17,19.5
1922,20.9,21.4,20.4,17.1,13.1,11.4,9.4,11.4,12.7,15.5,18.6,17.6
1923,20.5,22.5,20.8,17.7,14.2,11.2,10.4,11.4,12.5,15.1,19.4,19.5
1924,19.8,19.6,17.6,18.1,14.5,11.9,11.1,11.2,13.2,13.7,17.2,19.7
1925,18.8,19,19.6,17.2,13.7,10.8,9.5,10.7,12.5,13.9,20,21.1
1926,22.4,20.6,18.1,15.9,12.8,10.9,11.1,10.5,13.9,15.9,18.7,19
1927,20,20,17.9,17.4,12.6,10.8,10,11.7,13.6,15.6,19.3,20.7
1928,19.9,19.7,19.1,17.3,13.4,11.7,10.3,11.9,13.4,14.1,19.3,20.4
1929,19.7,21,17.6,16.4,13.3,10.9,9.8,11.1,13.4,15,17.2,19.9
1930,21.9,22,20.9,16.3,14.8,13.3,10.5,11.8,14,15.4,18.3,19.9
1931,20.8,19.3,19.2,16.3,12,9.4,11.5,11.5,12.6,14.6,16.3,21.4
1932,23,21.1,19,16.5,14.9,11.5,12,10.1,13.1,14,18,19.8
1933,20,23,19.8,16.8,13.2,12.4,10.3,11,13.8,15.1,17.5,20.4
1934,23.1,23.1,20.1,15.3,16.4,11.4,10.4,12,13.3,13.8,16.1,19.6
1935,20.5,19.9,18.6,16,14.6,11.1,10.8,11.3,12.6,13.8,18.6,19.6
1936,20.9,20.8,21.2,17,13.3,10.9,10.2,12.1,14.4,15.1,19.7,20.8
1937,20.6,21.2,19.9,17.7,14.1,10.9,10.1,10.6,13.4,16.1,18.1,19.5
1938,20,20.4,19.8,17.9,14,10.8,11,11.6,14.7,15.3,19.6,21.5
1939,21.1,21.2,19.5,17.3,14.1,11.1,10.5,10.8,13.5,14.9,16.4,20.3
1940,20.6,21.9,21.5,15.8,13.3,12.8,11,12.6,14.2,16.4,17.5,19.7
1941,20.9,21,18.7,16.9,14.1,12.3,11.5,12.9,12.4,13.9,18.6,21.2
1942,20.5,19.6,18.9,16.5,14.2,10.9,9.8,11.2,12.5,13.9,17.7,20
1943,20.8,19.7,20.2,15.6,13.5,12,9.1,10.2,12.6,14.9,17.5,19.5
1944,22.2,21.2,20,16.5,12.5,12.1,11.2,11.6,13.7,17,19.5,18.8
1945,21,20.9,20.3,20,15.3,13,10.6,11.6,12.8,15.6,17.9,20.4
1946,21,19.1,18.7,18,14.4,11.3,11.6,11.1,14.4,16.5,16.5,20.7
1947,22,22,19.8,16.8,14.4,13.2,10.7,11,12.7,14.2,16.8,19.9
1948,22.4,21.5,20.9,15.5,13.7,11.5,10.9,12.5,13.6,15.8,16.8,19.3
1949,21.4,20.5,19.2,18.1,13.4,12,12.8,12.7,12.9,14.4,17.1,21.1
1950,21.4,21.1,20.3,18.4,15.2,11.8,10.9,11.9,13.6,14.6,17.3,20.6
1951,21.8,21,20.4,15.9,12.7,12.1,10.2,9.4,14,15.4,18.6,19.4
1952,21,20,19.6,16.1,12.9,12.8,9.4,11.7,11.8,13.5,16.3,17.7
1953,21.2,20.9,21.2,17.7,14.4,11.4,10.1,10.3,13.2,14.7,16.5,18.9
1954,22.1,20.6,20.8,15.2,12.7,10.7,11.1,11,13.3,15.6,17.2,20.4
1955,21.2,21.7,19.9,15.3,12,9.8,9.9,10.6,12.1,13.2,16.5,18.2
1956,22.4,22.5,20.2,15.2,12.9,9.3,10,9,11.9,13.3,17,19.2
1957,22.1,21.1,19.9,16.8,14.1,13.5,9.7,11.8,13.1,16.8,19.1,20.6
1958,22.3,21.7,20.8,18.2,14.6,11.8,10.1,11.1,11.9,13.7,17.6,21
1959,22.5,20.6,21.2,18.1,15.6,13,11.9,12.6,12.6,15.9,17.5,18
1960,20.3,20.6,18.6,14.9,12.2,10.8,9.8,10.3,12.3,16,16.8,20.2
1961,23.4,22.6,22,16.1,14.6,12.2,10.9,11.7,14.8,16.5,18.2,20.5
1962,22.2,21.5,19.4,18.1,15,13.2,10.7,12.5,13.2,14.4,18.9,20.9
1963,21.5,20.8,20.1,16.6,14.1,11.8,10.4,11.5,13.8,17.4,18.4,21.2
1964,21.6,20.6,20.7,15.4,13.5,13.4,11.1,11.2,12,13.1,17.3,18.4
1965,22.9,22.2,20.3,18.8,13.8,12,11.2,10.7,13.1,17.1,17.3,21.7
1966,21.6,20.8,21,16.2,14.1,10.9,11.2,10.9,11.9,14.7,19.2,19.1
1967,21.3,21.3,18.9,18.7,14.4,13,10.7,10.8,13.5,17.3,18.4,20.5
1968,22.5,21.1,18.4,15.6,11.4,11.9,10.6,9.7,12,15.3,16.9,20.2
1969,22.2,21,19.7,17.2,14.2,12.1,11,11.7,11,16.3,18.7,19.2
1970,21,22,20.4,15.5,13.3,11.7,11.5,10.9,12.6,15,17.7,20.8
1971,22.2,21.9,20.3,17.5,13.4,11.9,11,10.5,12.5,14.6,15.5,18
1972,21.5,22.7,19.9,18.2,16.5,12.8,10.7,11.6,14.1,15.9,18.5,23.6
1973,22.4,22.1,20.1,17.9,14.9,10.9,12,11.2,12.4,15.4,17.6,19.9
1974,22.6,20.8,20.2,15.9,13.9,12,11.3,11.5,13.7,16.1,18,21.4
1975,20.6,23.1,18.9,16.9,13.8,11.7,11.8,11.2,13.1,14.4,18.2,20.3
1976,21,21.8,20.7,18.1,15.2,12,12.2,12.1,14.1,15.6,16.7,21.1
1977,22.6,22.7,20,16.9,13.2,12.5,12.2,12.7,12.8,16,18.5,22.9
1978,22.8,22.2,21.6,19.1,14.4,11.6,10.8,11.8,13,15.3,18.4,21.2
1979,23.2,22.1,21.2,17,12.7,12.5,11.5,10.9,12.4,16.3,18.5,21.7
1980,22.4,20.1,21.6,16.9,15,11.6,11.4,12.3,14.5,14,20.4,20.9
1981,20.9,19.8,19.5,19.7,14.2,10.4,10.7,11.1,15.1,17.3,16.9,19.4
1982,21.9,22,18.6,16.7,14,11.1,10.6,13.6,14.1,16,20.9,21.8
1983,23,22.9,19.6,17.7,15.6,13.6,11.2,13.6,14.9,16.7,17,20
1984,21.8,21.2,18.8,17.6,14.2,12,10.8,11,11.8,16.7,18.3,19.5
1985,22.1,24.3,21.6,17.2,14.2,13.8,11.9,11.6,14.1,15,18.9,19
1986,22.6,21.1,20.4,16.6,14.1,11.7,10,10.6,13.5,13.9,18,18.3
1987,20.6,21,20.6,18.6,13.2,12.8,11.2,11.4,14.5,15.9,17,20.6
1988,21.1,21.4,21.2,17.8,15.1,13.4,10.8,12,14.4,17,17.2,19.6
1989,22,22.9,20.3,17.2,14.5,11.6,10.7,11.3,14.6,15.1,19.4,21
1990,21.3,21.2,21.3,17.4,15.3,11.2,10.1,10.9,14.6,15.6,18.9,20.1
1991,22.1,22.8,20.4,19,15.9,13.2,12,11.9,14.2,17.6,17.8,21.2
1992,21.7,21.7,21.2,17.6,14.2,12.3,12.3,10.8,11.4,15.3,16.1,19
1993,22.8,20.7,19.6,18.1,14.1,11.2,10.9,11.4,13.2,14.6,18.6,20.2
1994,21.5,20.7,21.9,18.7,15.9,12.3,12.5,12.4,14.2,16.1,19,21.1
1995,22.6,22,20.2,16.3,13.6,11.7,11.7,12.8,13.9,16,17.7,18.9
1996,21.6,23,19.4,17.6,16.4,12.9,12,11.4,13.7,16.7,18.4,19.9
1997,23.5,23.7,19.7,18.2,14.2,13,10.5,10.9,13.4,15.6,17.8,21
1998,22.7,21.4,21.2,16.4,15.4,11.8,10,13.2,12.9,15.2,18.4,20.5
1999,22,21.6,19.9,18.4,15.7,12.7,12.2,11.9,14.5,15.1,17.4,19.6
2000,20.8,21.1,18.6,16.8,13.8,12.8,11.8,11.1,14.8,16,19.2,21.6
2001,22.9,20.4,19.6,18.3,15.2,12.8,11.8,11.8,13.7,13.6,17.1,17.5
2002,21.3,19.1,20.5,17.3,16.7,12.9,12.1,11.7,13.6,16.4,18.4,19.7
2003,22,22.9,21.6,18.3,15.7,12,11.1,11.3,13,15.1,18.6,20.6
2004,20.9,22.8,19.2,17.7,13.9,13.1,11.2,11.2,13,17.3,18.3,21.7
2005,21.7,22.2,22.7,17.9,16.4,12.1,10.9,11.5,12.1,14.4,17.1,19.3
2006,19.9,20.6,19.6,14.8,14.3,10.8,10.7,13.1,14,16.3,19.6,20.2
2007,21,22.4,19.4,17.3,13.4,11.1,12.4,12.3,13.6,14.9,18.6,18.5
2008,21.5,20.9,19.7,16.7,15.3,12.2,10.6,10.4,13.7,15.7,16,19.2
2009,22.1,21.4,19,16.7,13.5,11.6,10.8,11.9,11.8,16.1,19,20.4
