1901,23.5,23,23.2,22.9,20.8,18.2,17,16.9,18.7,20.5,20.3,21.5
1902,23.7,23.7,22.7,20.7,18.8,17.7,16.7,16.1,16.8,19,20.4,23
1903,23.5,24.2,23.2,21.7,20.1,18.5,17.8,17.2,17.7,19.9,20.9,22.2
1904,22.8,23,22.8,21.7,18.9,17.4,16.9,16.8,16.7,18.1,20.2,21.1
1905,22.3,23.3,22,20.5,19.5,18.1,16.4,16.9,17.4,18.6,20.4,23.4
1906,23.6,22.5,22.6,21.6,19.5,17.5,16.8,17,18.1,19.4,21.6,22.6
1907,24.2,23.3,24.6,21.9,19.8,18.9,17.3,16.6,17,19.8,21.5,22.9
1908,23,23.3,23.1,21.6,20.4,18.2,16.8,17.3,18.1,18.3,21,21.6
1909,23.8,24.1,22.4,21.9,19.7,18.8,18.6,17.6,18.5,19.5,21.8,22.7
1910,24.2,24.9,24.9,22.7,20.6,19.2,18.4,17.6,18.3,20.7,22.1,23
1911,23.1,23.3,23,21.5,19.8,18.2,17,16.9,17.3,19.1,20.8,21.9
1912,23.1,23.3,23,21.5,19.8,18.2,17,16.9,17.3,19.1,20.8,21.9
1913,23.1,23.3,23,21.5,19.8,18.2,17,16.9,17.3,19.1,20.8,21.9
1914,23.1,23.3,23,21.5,19.8,18.2,17,16.9,17.3,19.1,20.8,21.9
1915,23.6,23.9,23.1,21.7,19.9,18.4,17.4,17.2,17.3,19.5,21.3,22.3
1916,23.2,23.7,23.3,21.9,19.9,18.6,17.3,17.1,17.6,19.6,21.2,22.3
1917,23.2,23.4,22.7,21.7,19.9,18.2,17.1,17,17.7,19.5,21,21.9
1918,23.2,23.3,22.9,21.6,19.7,18.2,16.8,16.8,17.3,19.4,21,21.8
1919,23,23.4,22.9,21.4,19.8,18.1,17,16.8,17.4,19.3,20.6,21.8
1920,23.4,23.5,23.1,21.5,19.4,17.9,17.1,17.1,17.4,19.4,21.2,22
1921,23.4,23.5,23.1,21.5,19.9,18.3,17.3,17.3,17.3,19.4,20.8,21.9
1922,23.3,23,22.9,21.1,19.5,17.8,16.9,17.1,17.5,19.1,20.7,22.1
1923,23.1,23.3,23.3,21.4,19.5,17.8,17.4,17.1,17.2,19.1,20.8,21.8
1924,23,23.1,23.1,21.7,20,18.4,17.2,17.2,17.2,19,20.9,22
1925,23.1,23.2,23,21.8,19.7,18.1,17.1,17.1,17.7,19.5,21,22.2
1926,23,23.6,23.3,21.5,19.9,18.3,17.1,17,17.5,19.1,20.5,21.7
1927,23.2,23.3,23,21.7,19.7,17.8,17.1,17,17.4,19,20.4,21.7
1928,22.9,23.2,22.9,21.9,20,18.2,17.1,16.9,17.1,19.1,20.5,21.7
1929,23.4,23.6,23.3,21.5,19.4,18.2,16.8,16.8,17.1,19.4,20.7,22.2
1930,23.4,23.5,23.1,21.7,20,18.6,17.2,17.2,17.1,18.8,20.8,21.4
1931,23.1,23.5,22.9,21.3,19.7,18.1,17.1,17,17.5,19.7,21.4,22.4
1932,23.5,23.5,23,22.1,19.8,17.8,17.3,17.1,17.4,19,21,22.4
1933,24,23.9,23.6,21.4,20,17.9,17.4,16.3,17.2,19.4,20.6,22.4
1934,22.7,22.2,22.7,21.3,19.9,18.7,17.2,16.9,17.7,19.2,20.9,22.3
1935,24,24.2,23.7,21.5,19.2,17.8,16.9,16.7,17.5,19.6,19.7,22.2
1936,23.1,22.8,22.7,21.8,20.1,18.1,16.5,16.8,16.6,18.9,20.1,22.1
1937,22.9,22.7,22.2,20.8,19.1,18.6,16.9,17.1,16.9,19,21.2,21.8
1938,23.3,22.9,23.1,21.1,19.9,18.2,17.4,17,17.2,19.7,21.5,22
1939,22.7,23.2,23.3,21.8,20.5,18.7,16.3,16.5,16.6,18.1,20.5,21.3
1940,22.7,22.6,22.9,21,19.8,17.6,15.8,16.3,16.7,19.3,20,22.2
1941,23.3,24.6,23.9,21.9,19.6,17.6,17.1,16.4,17.9,19.5,21.5,22.8
1942,23.7,24.3,24.6,23,20.2,19,18.1,17.6,17.6,20.5,21.2,22.3
1943,23.6,23.4,23.3,21.7,20.5,18.6,16.9,16.7,17,20.4,22,22.1
1944,24.1,23.8,23.1,21.9,20,17.9,17.2,17.4,17.5,19.1,21.4,22
1945,23,23,23.3,22.3,19.5,17.7,16.9,16.8,17.1,18.5,20.7,21.7
1946,24.5,24.4,23.5,22.7,19.9,18.4,16.5,17.1,18.2,19.6,21,23
1947,24.7,23.8,23.5,23,20.3,18.1,16.1,18,18.5,19.5,21.3,23.3
1948,24,22.8,23.6,22.1,20.3,18.5,17.7,17.6,18.1,20.1,21.8,21.9
1949,23.2,24.2,24.1,21.6,20,20.2,18.6,16.9,18.1,19.8,20.9,22.9
1950,23.9,24.2,23.2,21.6,21.1,19.8,17.9,18.3,17.5,19.3,20.6,22.2
1951,22.9,23.2,22.3,21.3,18.3,17.2,17,16.8,17,18.3,21.1,22.6
1952,23.6,23.1,23,22.1,19.9,18.2,17,16.4,16.7,19.5,21.4,21.9
1953,22.3,23,22.3,20.6,19.9,17.3,16.1,17.2,17.7,19.9,21.5,21.6
1954,23.4,23.1,22.6,21.2,19.5,18.2,17.9,16.3,17.6,18.3,20.9,21.5
1955,22.5,23.3,22.4,21.4,20.2,17.2,15.8,16.5,18.4,19.1,21.5,23
1956,23,23.9,23.1,21.5,19.4,18.1,16.2,16,17.6,19.3,20.1,22.4
1957,22.8,23.4,22.2,21.2,19.2,16.3,15.9,16.9,16.8,19,20.5,21.8
1958,22.5,23.8,23.5,21.8,19.5,19,16.4,17.1,17.7,18.5,19.7,21.5
1959,23.2,22.6,22.4,21,18.1,17.6,17.5,16.6,17.7,18.8,21.7,23.2
1960,22.5,22.8,22.8,20.8,20,17.6,16.9,16.7,17.8,19,20.4,21.2
1961,22.9,23.7,23.1,21.4,19.4,18.6,17.2,16.6,18.2,19.6,22,22.8
1962,23.9,23.6,22.8,21.5,21,18.3,17.7,16.9,17.3,19.7,20.4,21.9
1963,23.5,23.8,23.4,21.5,20.3,18.5,16.6,17.3,16.9,18.3,20.5,21.4
1964,23.1,23.9,23.6,21.9,19.8,18.3,17.4,17.6,17.4,19.5,21.4,21.5
1965,22.8,23.5,22.2,20.9,19.1,17.3,16.6,15.9,17.1,18.1,19.8,21.8
1966,22.9,23.4,22.2,21.2,18.2,17.2,15.8,15.7,16.6,18.1,19.9,21
1967,23,23.5,23.5,21.3,19.9,18.3,17.1,18.3,17.8,19.8,20.3,21.7
1968,23,23,22.8,20.7,19.7,17.5,16.6,16.4,16.5,19.2,20.4,21.9
1969,22.4,22.9,22.4,22,20.7,17.9,17,17.5,17.5,18.6,20.7,21.8
1970,23.8,23.2,23.8,21.8,19.6,18.5,17.1,18.8,18.6,20.5,21,22.2
1971,23.2,23.2,22.9,20.5,19.5,18.3,16.8,17.5,18.1,19.7,20.6,21.3
1972,22.8,22.4,23.2,21.4,20,17.5,16.1,15.9,17.3,18.7,21.2,21.8
1973,23.4,23.4,23.3,21.2,20.4,19,18.2,17.8,18,20.1,22.1,22.4
1974,23.4,23.5,22.9,21.7,19.8,18.6,17.3,16.6,17.5,19.1,21.4,21.1
1975,23.2,22.8,23.1,22,20.3,18.7,17.5,17.4,18.5,19.4,20.9,22.2
1976,24,22.9,23.2,21.8,20.3,19,17.3,17,16.6,19.2,20.7,21.5
1977,23.2,23.1,23.1,21.3,19.4,18.3,17.6,17.2,16.6,18.4,20.4,21.4
1978,23.2,23,23,21.7,19.4,18,16.9,16.8,16.8,18.4,20.5,21.4
1979,22.6,23.1,23.2,21.6,19.3,18.3,16.8,15.5,16.8,19.2,21.1,21.6
1980,23.7,24.4,23.4,21.3,20.4,17.5,16.4,16.5,16.9,18.8,20.6,21.3
1981,22.3,23.9,23.4,21.6,19.7,17.7,16.7,15.6,16.8,19.1,19.8,22.7
1982,23.7,23.1,23.2,21.3,19.6,17.2,16.1,17.1,16.3,18.3,21.5,21.3
1983,23.6,22.2,22.5,21.6,19.9,18.2,16.2,16.6,17.5,19.6,20.8,22
1984,22.3,23,23,22,20.3,19.3,17.8,16.7,17.1,19.2,21.2,22.5
1985,23.5,24.1,22.8,22.4,19.4,17.7,16.9,16.3,16.9,19,20.9,21.7
1986,23.7,23.4,22.7,21.6,19.6,17.6,16.3,16.5,16.7,18.5,20.9,22
1987,22.2,22.9,22,21.2,20.6,17.9,17.2,17,16.9,19,20.5,22.2
1988,23.4,23.5,22.6,22.4,21.1,19.7,18.1,18.1,18.8,20.6,22,22.6
1989,23,23.7,22.8,21.9,19.9,18.7,16.7,16.6,17.3,19.3,20.8,22
1990,23.2,23,23.6,21.7,20.4,18.4,17.2,17,17.5,18.9,21,22.4
1991,23.5,23.7,22.9,21.4,19.6,17.4,16.8,16.7,16.4,18.8,19.9,21.7
1992,23.3,23.6,23.1,21.9,19.4,18.4,17.3,16.6,17.4,18,20.3,21.3
1993,22.5,22.6,23,20.6,19.4,17.6,17.6,16.3,16.7,18,20.4,21.8
1994,23.8,23.3,23.4,21.4,19.2,17.3,15.7,16.6,15.7,17.6,20.5,21.3
1995,23.3,23.3,23.7,22.6,19.8,17.5,17.1,17.2,17.7,19.9,21.5,22.7
1996,23.4,23.4,23.7,22.6,19.8,17.7,16.9,16.5,18.1,19.3,20.3,22.5
1997,22.8,23,23.5,21,20.4,18.4,16.1,15.9,16.9,18.7,21.2,23.1
1998,23.9,24.3,23.8,22.8,21.4,19.1,18.5,18.8,18.8,20.4,21.3,22.7
1999,23.9,24.4,23.9,22.3,21.7,17.8,18.9,17.5,19.1,20.2,20.8,21.4
2000,23,23.4,23.3,22.1,21.1,18.5,16.8,17.3,17.8,19.6,21,21.8
2001,23.3,23.8,24,21.7,20.3,18.1,17.3,17.3,17.9,19.7,21.7,22.8
2002,24.7,24.5,23.4,22.4,19.9,19.2,16.8,17,17.6,19.7,21,22.2
2003,23,23.7,23.7,22.1,21.1,18.9,17.1,16.4,16.6,18.8,20.8,23
2004,23.8,24.7,23.9,21.8,20.2,18.5,16.8,16.6,17.7,19.5,20.3,21.9
2005,24.5,23.9,23,22.3,20.5,17.6,17.3,16.6,17.8,19.2,20.7,22.2
2006,23.4,23.7,23.8,22.7,19.7,18,16.1,16.7,17.3,18.8,21.4,21.5
2007,22.9,23.6,23.3,21.7,20,19.7,17.2,18,18.9,20.1,21.7,22.5
2008,24.1,24.3,23.7,22.5,19.1,18,17.8,17.6,18.1,19.4,21.5,22.8
2009,23.8,24.5,23.6,21.6,19.2,18.9,17.3,16.8,17.8,18.8,21.1,22.8
