1901,22.7,21.7,18.6,19.6,15,12.6,12.9,14.9,16.7,16.8,19,20.6
1902,20.6,21.5,20.3,18.4,16.3,13.2,14,15,17.2,17.2,18.7,20.8
1903,21.9,21.2,19.8,18.2,16.9,13.3,13.1,15.7,17.4,18.5,18.4,20.3
1904,21.3,20.5,19.5,18.6,16.2,14.1,13.4,15.1,16.3,17.7,19.4,20
1905,21.3,20.3,18.8,18.2,16.1,13.8,13.6,14.6,17.4,18.4,18.5,20.6
1906,22.5,20.5,19.7,17.2,16.2,14,13.5,14.6,16.5,16.9,18.2,20.1
1907,21.1,20.9,20.5,17.3,15.8,13,12.8,14.8,16.8,17,18.1,19.8
1908,20.8,20.8,19.7,17.3,15.3,13.5,13.3,15.2,17.3,17.7,19.1,20.5
1909,21.1,20.4,19.5,18.2,15.9,13.7,13.9,15.5,16.3,17.6,18.3,20.4
1910,20.3,19.9,19.6,17.6,15.3,12.4,13,14.5,16.1,17.1,17.5,19.4
1911,20.6,21.1,19.3,17.2,14.4,11.8,12.7,13.7,16.1,18.7,18.9,21.8
1912,21.2,21.8,19.4,18.4,16.3,12.7,13.2,14.7,16.5,17.8,20.2,20.8
1913,21.3,21.7,19.8,18.6,16.2,13.7,14.7,15.5,16.6,17.8,19.4,20.9
1914,21.8,21.1,20.1,18.8,16.4,13.1,13.8,14.4,18.6,18.3,18.7,21.3
1915,22.3,21.5,20.2,18.8,15.1,13,12.8,15.2,16.5,17.7,18.9,19.7
1916,20.8,21.4,19.6,18.4,14.8,13.5,14.4,14.6,17.4,18.9,19.6,20.9
1917,21,20.3,20.1,17.8,15.3,13.2,12.8,13.4,15.8,17.6,18.6,19.9
1918,19.5,21,19.6,17.2,14.6,12.7,13.7,13.7,18.1,19.4,19.3,20.5
1919,21.5,21.1,20,19.1,14.6,13.5,14,14.4,16.1,18.2,17.9,20.5
1920,21.7,20.7,19.3,17.8,15.9,12.5,14,15.3,17.4,17.5,19.9,20.6
1921,20.8,21.5,20.3,17.6,14.9,14.1,12.5,14.2,16.8,18.1,18.3,20
1922,21.4,20.8,20.2,18.3,14.9,13.3,14.1,15.8,17.8,18.4,19.6,20.7
1923,21,21.2,20.3,18,15.2,12.9,14,15.4,17.9,19.4,20.5,19.9
1924,20.9,19.7,19.6,17.4,15.4,12.9,12.4,14.2,16.2,17.7,18.6,19.5
1925,20.5,21.8,19.9,18.4,14.7,13.2,13,15.3,16.4,17.9,19.4,21.3
1926,21.9,22.9,20.1,17.9,15.7,13.3,12.4,14.7,16.1,18.1,18.9,20.5
1927,21.5,21.4,20.1,18.5,15.3,12.9,13.9,15,18,18.3,19.7,20.3
1928,20.8,20.7,20.1,17.7,14.9,14.4,13.2,14.2,17.1,18.5,20.1,20.9
1929,20.5,20.6,18.6,17.6,16.2,13.6,13.4,14.1,17.5,18.4,19.2,20
1930,20.5,20.2,19.5,17.7,14.9,12.4,13.5,14,16.1,17.8,19.5,21.4
1931,20.6,21.9,19.9,17.8,17,13.1,13.1,15.6,17.3,18.2,19,21.1
1932,20.9,21.4,20.6,19.3,15.7,14,13.4,15.3,18.9,18.8,20,20.7
1933,21.1,21.5,20.7,18.3,16.7,13.8,14.6,15.1,17.1,19,19.1,20.5
1934,21.5,21,20.5,19.4,17.2,14.2,13.9,16.3,17.3,18.8,19.6,20.7
1935,21.2,20,19.3,17.9,15.8,12.6,14.1,13.3,17.6,18.9,19,19.8
1936,21.3,21.2,20.1,18.2,15.4,13.7,14.1,15.4,16.9,17.1,18.6,20.5
1937,21.4,21.7,20.8,18.3,16.6,13.9,13.3,15.1,16.6,18.1,20.1,19.8
1938,21.3,21.2,20.7,19.2,16.4,13.6,14.2,15.1,17.4,18.8,19.3,20.8
1939,20.9,21.9,19.5,17.8,16.8,13.4,13.2,15,15.4,18.8,18.6,20.2
1940,21.6,22.1,21,18.8,16.1,13.8,13.2,15.9,17.7,17.5,19.6,20.8
1941,21.2,21.8,20.5,19.7,18.1,14.5,14.5,16.1,17.9,20,20.8,21.9
1942,22.4,22.7,21,18.4,15.9,14.2,14,15.9,17.3,17.3,19.4,20.4
1943,21,20.8,19.7,18.4,15.1,12.9,13.8,13.8,16.7,18.9,19.6,19.5
1944,22.6,20.3,19.9,18.7,15,13.5,14.5,17.1,17.4,19.3,20.6,21.3
1945,20.8,22.1,20,18.9,15.6,12.7,14,15.1,18.7,18.4,20,21.2
1946,20.9,21.2,20.9,19.6,17.2,13.5,14.4,15.1,19.1,19.3,20,21.4
1947,21.5,22.6,20.2,19.5,16.2,14,13,16.4,17,19.3,20.8,20.4
1948,20.8,20.9,20.3,18.3,16.6,13.8,14.7,15.9,17.1,19.3,18.9,21.7
1949,22.2,20.5,19.3,18.8,15.8,13.9,13.6,15.4,18.3,18.6,18.8,20.6
1950,20.9,21.4,21.8,19.1,15.3,14.2,14.5,14.9,18.5,17.8,18.9,20.7
1951,20.3,21.3,20.2,18.9,15.8,12.3,12.3,14.2,16.6,19.3,20.2,21.2
1952,22.2,21.3,21.1,18.8,15.9,14.1,13.7,15.9,17,19.2,18.9,20.3
1953,22,21.5,19.6,18,16.3,12.7,12.3,15.1,15.7,18.2,19,21
1954,21,21.5,19.9,18.1,16.5,12.1,13.1,14.4,17.6,19.4,19.4,21.3
1955,20.8,20.9,19.3,18.3,15.8,13.4,13.6,14.8,16.6,16.9,18.2,19.9
1956,20.6,21.5,21.1,19,16.2,14.1,14.2,16.4,16.2,18.5,19.7,19.8
1957,22.4,22.7,20.9,19.5,16.5,13.4,15.1,15.6,18.4,19.4,21.7,20.8
1958,22.3,22,20.8,19.6,17.7,12.9,14.3,15.5,17.6,18.8,21.4,20.7
1959,21.4,21.7,20.6,19.7,16.1,14.8,14.3,14.9,16.8,18.5,19.2,20.6
1960,21.1,21.3,20.9,17.3,15.7,13.6,12.8,16.3,17.3,19.5,19.3,20.4
1961,21.6,22.3,21.3,18.7,17.7,14.7,14.4,14,18.4,18.2,19.1,19.7
1962,21.1,22.2,20.6,18.4,15.4,14.5,14.5,16,18.9,20,19.8,21.1
1963,20.6,21.1,19.6,17.6,15,13.1,12.8,15.2,18.7,19.1,19.9,21.2
1964,21.3,22.3,22,18.3,15.8,12.3,12.2,15.1,17.9,18.1,19.4,20
1965,21.3,22.2,20.5,17.7,16,12.1,13.8,16.3,17.3,16.8,19.3,21.2
1966,22.4,21.2,20.8,17.8,16.1,14.2,14.6,15.6,16.9,18.2,19.9,20.9
1967,21.6,20.8,20,18.6,16.5,13.4,12.5,14.8,17.3,18.5,19.7,20.6
1968,22.2,21.1,19.4,17.1,16.1,11.4,15,16.1,17.4,18.8,17.9,21.6
1969,22.9,23,21.4,18.5,15.6,14.1,14.5,15.4,17.1,18.1,19.9,20.6
1970,22.8,20.9,20.4,18.3,16.7,14,14.1,16.7,18.9,18,20.7,21.7
1971,21.6,20.9,21.6,19.6,15.4,13.4,13.8,15.6,18.1,17.9,18.4,20.4
1972,21,20.4,20.1,18.9,15.3,12.5,13.7,14.9,17.7,19.1,18.5,22.2
1973,22.4,21.1,22.3,17.6,16.6,14,14.2,14.8,17.7,18.4,18.8,19.7
1974,21.9,21.8,20.9,17.4,15.8,13.8,14,15.2,17,19.3,19.8,21.2
1975,21.1,20.7,19.4,17.9,16.8,13.7,13.5,15.3,18.6,18,19.2,20.2
1976,20.6,21.2,20.8,17.8,15.1,14.1,14.4,14.9,18.4,18.5,20.3,21.7
1977,22.5,21.9,19.5,19.6,16.3,14.7,14.3,15.5,18.2,20.1,20.5,22
1978,21.2,21.8,21.4,18.1,16.6,12.8,14.4,18.5,18,18.3,20.3,20.7
1979,21.5,22.8,21,20,17,14.4,13.7,16.5,17.7,19.9,20,20.9
1980,21.4,22.2,20.8,18.9,17.1,13.9,13.3,15.4,16.9,19.1,20.4,22.2
1981,23.2,21.5,20.4,18.6,15.8,13.4,14.5,14.6,16.5,16.1,20.8,20.8
1982,22.5,22.4,20.8,18.2,16.8,14,14.8,16.3,18,18.3,19.4,22.2
1983,23.3,22.4,21.3,21.1,18.2,15.6,15.2,14.9,19.3,18.4,20.4,21.2
1984,21.3,21.5,20.8,18.4,17,13.5,14.6,16.1,18.3,19.7,18.8,21.5
1985,22.8,22.5,21.6,19.2,16.2,14.7,14.6,16.9,18.8,19.7,20.5,21.3
1986,22,21.4,21.2,19.5,17.5,14.4,14.8,17.4,18,18.7,19.6,21.7
1987,22.7,24.3,22.2,20.8,18.5,13.8,14.5,15.9,17.2,17.8,20.6,22.6
1988,23.2,23.3,22.2,19.7,17.1,14,15,17,18.3,18.6,19.2,20.5
1989,21.4,21.1,21.6,18.3,17.9,15.1,15,17.7,17.9,18.9,19.8,21.2
1990,21.8,21.4,21.3,19.5,16.5,14.8,15.7,15.6,17.4,19.9,20.5,21
1991,22.2,22.2,21,18.8,16.9,14.7,14.8,16.6,18.8,19.6,20.6,20.7
1992,22.8,24,22,21,17.4,15,15.1,15.2,20.6,20.9,20.5,22.5
1993,22.6,22.3,20.8,19.8,18.3,14.7,15.8,16.3,19.9,19.7,19.7,21.8
1994,21.4,21.6,21.4,19,16.7,13.9,13.2,16,18.5,17.4,20.6,21.2
1995,22.5,22.9,21.4,18.8,16.7,14.3,15.3,16.8,19.2,20.2,20.5,20.2
1996,22,22.2,20.4,17.8,16.7,14.6,13.3,15.6,18.7,20.1,20.4,21.8
1997,22.1,22.5,20.9,17.9,15.7,15.1,14.7,17,18.8,18.2,19.6,21.6
1998,22.2,22.7,22.6,20.3,16.9,15.6,15.6,16.3,19.6,19.2,20.6,21
1999,22.1,22,22.1,19.7,17.4,15,15.5,16.4,17.7,18.4,21.1,21.9
2000,21,21.8,21.4,18.2,15.4,14.6,13.9,16.1,17.8,18.5,19.3,21.2
2001,21.8,21.4,20.9,19,16.6,15,14.2,17,17.7,19.1,19.6,21.4
2002,22.1,21.5,21.6,19.9,17.2,14.3,14.7,17.1,18,19.1,19.6,21.8
2003,22.6,23.7,22.2,20.4,17.4,14.5,14,15.6,18,19.5,20.8,22.4
2004,21.2,22.8,21.3,19.7,17,14.1,14.3,17.5,17.6,19.6,22.3,22.8
2005,22.9,23.3,20.7,19.3,17.9,15.7,15.1,17.4,19.5,20,21,20.8
2006,22.6,22.7,20.4,19,15.7,14.1,15.6,16,17.5,19.9,20.7,22.6
2007,22.4,23.2,21.5,19.8,16.7,14.6,14.3,16.4,19.3,18.4,20.4,20.4
2008,21.4,22.8,21.1,18.1,17.6,14.1,15.4,17.2,18.7,19.2,20.6,21.7
2009,22.3,21.9,20.6,19.2,17.1,15.5,14.1,16.1,19,19.2,18.7,21.9
