1901,21,21.5,20.2,17.2,15.3,13,15,14.9,16.1,19.3,18.6,18.9
1902,20.8,22.6,21.5,19.3,17.2,15.7,16,13.6,17.3,18.2,20.7,21.1
1903,20.3,22.1,22.3,18.2,14.8,15.5,14,15.2,16.6,17.2,19.3,20.7
1904,20.4,20.8,21.7,18.3,13.7,12.5,14.3,15.1,16.7,17.6,19.2,19.4
1905,20.5,21.3,19.7,18.4,16.1,13.9,14.1,15.1,16.8,20.9,18.9,20.2
1906,20.8,20.7,20.2,18.3,17,14.5,14.5,16.2,15.6,18.9,19,19.9
1907,20.4,21.4,21.9,18.6,13.6,13.8,12.9,14.1,17,17.6,18.5,20.6
1908,20.8,20.7,19.8,18.5,15.5,14.5,14.9,13.5,16.3,17.4,18.6,19.8
1909,21.8,22.5,19.6,17.8,13.3,13.6,14.6,15.4,16,17.1,18.8,18
1910,22.3,21.2,20.9,19.8,13.9,15.3,13.2,15.8,15.8,16.9,18.5,19
1911,22,21.6,19.3,18.1,15.8,12,12.3,14.2,15.7,17.1,20.1,20.6
1912,21.7,22.7,21.2,18.8,17.2,15.4,12.3,15.6,14,17.4,19.8,19.8
1913,20.4,21.6,21.7,19.2,16.1,13.3,14.9,15.1,16.6,18.7,19.2,19.1
1914,22.6,21.9,21.7,18.9,15.1,16.7,16.6,15.5,17.6,19.3,20.9,19.4
1915,22.3,23,21,20.6,18.4,13.3,13.7,16,16.6,17.9,18.1,19.4
1916,21.9,20.3,19.9,18.1,16.7,14.4,13.4,14.7,17,17.4,19.3,19.3
1917,20.6,20.9,20.1,17.2,12.8,12.1,12.3,12.7,16.3,17.3,16.1,18.5
1918,20.6,20,19.4,17.2,14.8,12.7,12,13.2,15.2,17.2,18.3,18.1
1919,19.7,19.8,20.3,18.8,17.6,15.1,14.7,13.9,13,17.2,17.9,19
1920,21.8,21.7,20.9,19.2,15.4,13.7,14.1,13,15.7,18.7,19.4,19.8
1921,21.4,21.3,21.2,17.6,15.9,12.2,11.9,16.2,15.3,17.1,17.5,19.8
1922,21,20.9,20.5,18.7,15.5,13.9,14.2,16.1,16.5,16.7,18.3,19
1923,21.1,21.3,20.9,20,14.6,13.8,12.2,15.3,15.8,17.4,18.5,20.7
1924,20.1,20.1,21.5,18.5,15.3,14.5,13.6,13.2,15.6,15.8,17.7,19.1
1925,21.5,22,20,19.9,15.8,12.3,11.5,16.6,16.6,17.1,18.7,20.1
1926,21.2,20,21.3,18.9,14.7,15.3,13.3,15.5,17.4,18.3,19.2,19.8
1927,21.3,21.2,21.2,18.9,14.9,13.4,13.1,14.1,15.7,17.4,19,19.3
1928,21.1,21.9,21.2,20.5,15.7,14.2,14,14,16.1,17.8,19,19.9
1929,21.3,21.4,20.2,16.8,14,13.6,14.5,14.7,16.6,18.6,17.7,20.1
1930,21.7,21.2,21,18.4,16.6,15.8,13.8,15.6,15.5,17.6,18.3,19.5
1931,22.4,20.8,20.9,18.5,14.8,12.9,14.2,14.3,14.9,17.5,17.9,20.3
1932,20.6,22.1,21.4,19.8,15.6,13.7,15.3,13.8,16.8,19.2,19.5,19.4
1933,20.8,21.9,20.2,17.4,15.9,12.4,12.4,14.9,16.2,18,17.8,18.7
1934,21,21,21.6,18.5,16.2,15.4,13.6,15.2,16,17.4,19.1,19
1935,20.9,21.7,21.7,17.1,14.3,15.5,15,14.6,15.6,17.8,18.5,20.6
1936,21.6,20.5,20.6,18.7,18.6,16.6,14.8,14,15.8,18.8,18.5,19.7
1937,19.2,21.3,21,17.4,14.3,14.6,15.1,16.7,16.2,17.3,17.6,18.1
1938,21.7,21,22,18,15.4,14.7,13.9,14.3,16.1,17.4,18.4,19.1
1939,21,21.1,21.3,18.1,16.8,14.3,12.7,16.1,15.8,18.6,18.3,18.7
1940,21.3,20.7,21.4,19.2,17.9,15.7,16.4,15.5,16.3,17.6,18.3,22
1941,21.9,21.7,20.4,21,16.8,13.6,13.7,16.4,13.5,17.6,18.3,19.1
1942,21.2,21.4,21,17.9,15.1,12.9,10.9,15.2,16,17.5,18.6,18.3
1943,20.1,21,21.4,17,16.6,15.1,14.4,12.8,14.8,17.9,18.4,18.2
1944,21.2,20.6,21.1,17.3,15.6,14.5,12.7,16.2,17.4,20.5,17.5,19.6
1945,20.8,21.8,20.4,18.6,14.1,12.3,14.2,17,15.7,18.8,18.7,18.6
1946,20.4,21.9,20.1,17.2,16.9,14,12.3,15.9,17.8,18.5,19.3,19.1
1947,21.5,22.2,19.7,18.3,16.6,15,12.2,14,15.3,15.7,17.4,17.8
1948,22,21.2,19.9,18.5,15.6,14.4,15.1,13.4,16.9,17.5,18.4,19.3
1949,20.7,20.8,22.2,17.2,15.3,15.6,14,14.6,15.8,16.5,18.2,19.1
1950,20.4,20.7,20.6,18.5,17.2,14.6,14,16.5,16.6,17.1,17.7,19.1
1951,20.3,20.9,20.6,15.3,15.5,13.2,12.8,14,16.6,17.6,18.3,17.8
1952,21.2,20.8,21.4,16.9,15.6,13.2,14,16.4,15.4,18.2,18.8,19.5
1953,21.7,20.8,21.3,17.4,16.2,14.1,11.4,15.5,17.8,18.2,18.3,19.2
1954,21.9,22,20.7,17.9,15.1,15.1,14.1,16.1,17.2,17.8,19.3,19.2
1955,21,22.5,20.7,18.4,15.1,14,13.3,14.6,17,16.7,17.4,19.4
1956,22.7,21.6,20.2,17.5,13.7,12,13.3,13.3,17.3,17.5,17.1,19
1957,21.2,20.1,21.1,17.6,15.8,13.9,13,15.3,15.7,19.5,18.8,20.4
1958,22.5,22.4,20.6,18.3,15.6,14.9,15.5,16.8,16.2,18.6,19.9,20.1
1959,22,22.2,20.7,21,16.5,13.9,16.1,15.3,18,18.8,19.1,19.8
1960,20.8,20.3,21.2,17.9,13.7,14.1,14.9,15.7,17.3,19.6,18.8,20.1
1961,21.3,21.7,20.6,18.9,15.7,14.6,15.3,16.7,18.7,19.7,19.7,19.6
1962,20.4,21,20.9,17.7,14.6,12.3,12.2,14.7,16.5,16.3,18.7,19.4
1963,22,21.3,22,18.3,15.4,13.6,15.3,16.8,19.5,18.8,19.7,19.2
1964,21.5,21.2,21,19.5,15.3,13.1,12,15.2,16.9,17.4,17.6,18.5
1965,20.2,21.4,19.2,18.5,15.5,15.3,14.2,15.7,17.7,18.2,19.2,20
1966,22,22.7,21.1,18.5,16.1,15.2,15,14.2,15.5,18.8,18.9,20.5
1967,20.8,21.5,20.7,19.1,17.7,14.4,15.1,17.5,17.6,20.3,18.6,18.4
1968,20.7,20.4,20.9,16,13.6,13.8,14,14,16,18.2,20.5,20.4
1969,22.1,22.4,21.6,17.9,16.2,14.8,14.5,15.5,17.7,16.5,19.2,18.7
1970,21.3,21.4,21.5,19.1,17.6,15.4,14,14.3,15.4,18,17.7,20.7
1971,22.2,21.7,21.9,17.2,14.9,12.9,12.7,15,16.2,17.3,17.5,19.4
1972,21.1,20.3,21.3,16.4,16.3,16.1,13.1,15.1,16.2,17.9,19,19.9
1973,22.4,23.3,21,21.3,16.1,15.6,15.3,14.8,16.3,18.3,18.9,20.9
1974,22.2,23.2,22,19,16.1,14.4,15.3,15.9,17.3,18.7,19.5,19.8
1975,21.6,22.8,22.3,18.8,15.9,14.7,12.6,17.6,18.1,18.4,18.9,20.4
1976,22.4,21.4,21.3,18.8,16.5,14.8,14.3,15,15.5,17.8,19.8,20.4
1977,22.1,23.3,23,18.8,18,14.9,18.4,16.7,17.6,19.8,19.2,19.1
1978,22.5,22.4,21.9,18.2,15.3,14.4,15.8,14.9,16.1,19.8,19.6,19.9
1979,19.8,22,20.6,17.9,15.2,13.2,13.3,16.5,16.2,19.4,18.2,20
1980,20.9,21.5,22.7,19.6,17.6,13.7,15.5,15.6,14.2,19.1,18.7,20.9
1981,21.8,22.5,21.6,18.3,17.7,13.8,12.8,15.7,17.7,17.1,20.2,19
1982,20.6,21.5,20.9,17.8,15.7,15.9,15.2,16.3,17.1,18.5,19.7,19
1983,21.8,22.4,20.6,19.3,17.6,14,16.2,15.6,14.3,18.2,19.8,20.3
1984,23.7,24.2,21.7,18.2,18.3,15.8,15.9,13.5,16.1,19.9,18.9,19.2
1985,20.9,22.1,21.8,20,16,13.5,13.7,16.8,17.1,19.9,20.4,21.4
1986,22.9,22.2,21.4,20.3,17.6,14.9,14.4,16,15.6,17.9,20.5,20.3
1987,22.7,21.3,21.2,20.1,14.9,13.4,17.1,14.8,15.9,18.8,19.8,20.6
1988,23.3,21,22.2,19.2,15.7,13.3,12.6,16.1,18.2,18.3,19.2,20.8
1989,21.3,21.9,21.4,20.1,15.8,14.2,12.5,14.7,15.9,17,19.1,19.8
1990,21.9,22.7,22.6,21,15.4,14.2,12.6,14.1,15.1,20.2,21.2,20.5
1991,21.1,21.6,20.7,19.2,16.9,15.6,14.2,16,17,19.3,18.4,20.8
1992,22.5,22.8,21.7,18.7,17.3,16.8,13.6,14.1,16.3,19.1,19,20.5
1993,22.4,22,21.8,20.1,16.7,14.5,15.2,14.5,16.2,20,19.6,20.8
1994,21.7,23.3,20.9,19.5,18.2,14.4,15.5,15.4,18.1,20.1,18.2,21.7
1995,22.8,22.3,22,19.8,16.8,15,17.4,18.4,17,18.1,19.8,20.8
1996,22.6,22.4,21.5,20.1,16.9,14.6,13.4,15.9,16.5,19,19.7,21.6
1997,22.1,22.7,21.1,19.1,16.9,14.6,16.2,16.7,18.5,19.2,20.3,21.7
1998,23.2,22.9,22.3,19.5,16.3,14,15.4,17.1,16.8,18.9,19.9,21.5
1999,21.9,22.6,22.5,18.7,15.5,13.9,15.3,15.9,17.4,17.7,18,21
2000,21.8,21.9,21,19.8,16.3,16.7,12.8,15.8,16.6,21.3,19.8,21.1
2001,23.3,23.6,23.3,21.3,16.2,14.9,15.5,17,17.5,19.8,20.7,20.5
2002,22.5,21.9,23.7,22.2,18.1,17.6,17.3,16.8,16.8,21.9,20.5,21.9
2003,23.1,24.2,22.5,20.5,16.3,17.3,16,14.3,17.5,19.3,20,21.4
2004,21.7,22,21.5,20.6,15.1,14.8,14.5,16.3,19.8,18.5,19.8,20.2
2005,22,22.7,21.7,21.5,18.6,17.4,15.1,17.6,16.9,20.1,20,20.2
2006,23.5,22.7,22.9,19.6,15.6,15.8,16.9,17.3,16.7,20.1,20.3,21.7
2007,22.4,23.1,23.2,21.1,16.1,16.7,14.8,16.8,19.6,20.8,19.8,21.3
2008,21.2,22.2,21.7,19.6,16.3,15.1,16.2,16.9,16.4,19.8,19.5,20.6
2009,21.5,23.1,23.1,20.3,17.6,13.6,14.8,16.2,18.2,19.2,22.2,21.4
