1901,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1902,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1903,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1904,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1905,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1906,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1907,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1908,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1909,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1910,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1911,23,22.6,22.5,22.7,21.8,20.2,19.3,18.9,19,20,21.3,22.3
1912,22.9,22.7,22.5,22.7,21.7,20.1,19.3,18.8,18.9,20,21.4,22.3
1913,22.8,22.6,22.5,22.7,21.8,20.1,19.5,19,19.1,20.1,21.4,22.5
1914,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.6
1915,23,22.8,22.6,22.9,21.9,20.1,19.4,18.9,19.1,20.1,21.4,22.4
1916,22.9,22.9,22.5,22.7,21.9,20.2,19.4,19,19.1,20.1,21.5,22.5
1917,23,22.9,22.6,22.7,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1918,22.9,22.9,22.6,22.7,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1919,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1920,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1921,23,22.8,22.6,22.8,21.9,20.2,19.5,19,19.2,20.2,21.6,22.7
1922,23.2,23,22.7,22.9,22,20.3,19.5,19,19.2,20.2,21.6,22.7
1923,23,22.7,22.6,22.7,21.9,20.1,19.5,18.9,19,20,21.3,22.3
1924,23.1,22.9,22.7,22.9,22,20.4,19.6,19.3,19.3,20.3,21.6,22.7
1925,23.1,22.8,22.6,22.8,22,20.4,19.8,19.2,19.2,20.1,21.4,22.5
1926,22.8,22.8,22.5,22.6,21.9,20.4,19.7,19.2,19.3,20.1,21.3,22.3
1927,22.9,22.6,22.5,22.4,21.5,19.9,19.3,19.2,19.2,20.3,21.5,22.4
1928,22.8,22.7,22.7,22.9,22,20.2,19.6,19.2,19.3,20.3,21.6,22.5
1929,22.8,22.9,22.7,22.6,21.8,20,19.4,18.8,18.9,20.1,21.4,22.4
1930,23.1,22.8,22.7,22.8,21.7,20,19.3,18.7,18.9,19.9,21.2,22.5
1931,23,22.8,22.6,22.8,22.1,20.3,19.6,19.1,19.2,20.2,21.4,22.6
1932,23,23,22.6,22.8,21.9,20.2,19.5,19,19.1,20.1,21.4,22.5
1933,23.1,23,22.8,22.9,22.1,20.6,19.7,19.2,19.2,20.3,21.3,22.5
1934,22.5,22,22.1,23,22.9,20.4,19.7,19.5,19,20.4,21.9,22.7
1935,23.4,23.1,22.9,22.4,22.2,19.8,18.9,18,19.3,20.9,21.6,22.4
1936,23.1,23.2,22.9,23,22.7,20.1,19.3,18.5,18.7,20.9,22.3,22.6
1937,23.3,23.5,22.8,23.7,22.6,20.5,19.5,19.1,19.8,20.8,22.6,22.5
1938,22.8,22.9,22.8,22.9,21.8,20.4,20,19.1,19.4,20.7,21.9,22.4
1939,22.6,23.4,22.6,23.1,22.8,20,19.7,19.5,19.3,20.5,21.8,22.4
1940,23.3,23.3,23,22.1,22.4,20.9,19.5,19.2,19.5,19.8,21.8,23
1941,23.4,23.3,23.1,23.4,22.6,19.9,19.2,19.4,19.8,20.5,22.5,23.6
1942,23.9,24,23.9,23.7,22.9,20.9,19.4,19.5,19.1,20.1,21.8,23.1
1943,23.2,23.1,23.1,23.7,22.8,20.2,18.8,18.9,18.7,19.7,21.9,23.3
1944,22.5,23.3,23.3,23.7,22.7,20.9,19.8,19,19.8,20.8,22.9,23.4
1945,23.7,23.5,23.4,24,23,19.6,19.4,19.1,18.7,20.9,21.9,23.3
1946,23.3,23.2,23.2,23.7,23,20.6,19.4,18.9,18.8,20.2,22.2,23.6
1947,24.2,23.6,23.4,23.4,21.9,20.1,19.8,18.7,19.3,20.1,21.6,22.6
1948,23.1,22.7,22.9,23.3,23.1,20.9,19.8,19.5,19.5,20.5,21.4,22.4
1949,22.7,22.3,22.5,23.2,22.5,20.6,20.1,19.9,19.7,20.8,21.9,22.7
1950,22.5,22.4,22.8,23.1,21.5,20,19.6,19,19,19.9,21.1,22.3
1951,23,23,22.6,22.5,21.8,20.6,19.3,19.2,19.8,20.7,21.8,23
1952,23.8,23.5,23.6,23.3,22.5,20.8,19.8,19.2,19.6,20.2,22,22.9
1953,24,23.3,22.9,23.2,22.3,20.5,19.7,19.1,19.1,20.3,21.6,22.9
1954,23.1,23.4,23,23.1,22.4,20.5,19.8,19.4,19.8,19.7,21.5,22.9
1955,23.5,22.7,22.8,22.6,21.6,19.9,19.5,18.6,19.2,19.7,21.5,23
1956,22.1,22.5,22.7,22.6,21.8,19.7,18.6,18.8,18.3,19.5,21.5,22.5
1957,23,22.5,22.7,23.4,22.4,20.2,19.6,19.5,19.4,20.9,21.5,22.9
1958,23.4,23.5,23.7,23.5,21.9,20.6,19.5,19.7,19.7,20.2,22.6,22.7
1959,23.3,23.5,23.7,22.6,21.2,20.4,19.5,18.9,19.2,20.5,22.1,23.2
1960,22.1,22,22.7,22.7,21.7,20.3,19,18.2,19.1,20.2,20.5,22.8
1961,23.4,24.2,23.3,23.2,22.7,20.8,20.3,19.5,19.8,21.1,22,23.1
1962,23,22,22.1,22.6,21.6,20.2,19.6,19.2,18.7,19.7,22.3,23.2
1963,22.9,22.7,23.3,22.6,21.3,20.3,19.9,18.8,18.4,20.1,22.5,22.2
1964,23.4,23,23.2,22.8,20.7,19.3,18,18,17.6,18.2,20.2,21.3
1965,21.8,21.4,21.5,21.7,20.4,18.3,18,17.9,18.4,20.1,20.9,21.8
1966,22.3,22.8,21.6,22.9,22.4,18.4,20.2,19.1,19.8,20.6,18.8,20.9
1967,22.8,22.5,22.1,21.8,21.6,19.8,19.6,19.2,19.1,19.5,21.7,21.1
1968,21.3,21.3,22.2,21.9,20.6,18.7,18.3,17.5,17.8,19.5,20.7,21.7
1969,21.6,22.5,21.8,22.2,21.2,19,19.2,17.8,17.9,18.4,20.6,21.6
1970,22,22.6,21.8,22,22.3,20.5,19.8,19.3,19.3,19.4,20.7,22.9
1971,22.8,21.9,21.4,22.5,21.4,19.8,19,17.1,18.1,18.8,20.6,22.2
1972,22.5,22.3,22.3,22.6,22.1,19.5,19.2,18.3,19.4,20.6,21.4,22.9
1973,23.2,23.2,23,22.8,21.7,20.1,18.6,18,17.7,20,20.5,21.2
1974,21.1,21.5,21.1,21.9,20.6,19.5,19,18.3,19.2,18.9,21.3,22.1
1975,22.5,22.5,23.5,22.8,22.2,20.7,19.3,18.6,19.1,19,20.5,22.9
1976,22.2,22.7,22.2,22.3,21.6,20.3,19,18.5,18.9,20.4,20.6,22.2
1977,22.9,23.2,21.3,23.1,21.6,18.6,18.7,19,19.2,20.8,21.1,21.9
1978,23.3,23.5,22.3,22.7,21.6,21.1,19.3,19.9,19.9,20.6,21.9,21.7
1979,23.6,23.7,22.9,22.3,22.3,20.8,19.6,20.2,20.1,20.5,22.2,23.7
1980,23.5,24,23.2,23.4,23.6,20.2,20.2,19.8,19.6,20.4,22.9,23.6
1981,24,23.8,23.3,22.4,21.4,20,18.8,19.2,19.2,20.4,21.7,23.2
1982,23.4,22.7,22.2,22.5,22.2,21.2,20.2,19.2,19.4,21.2,21.9,23.2
1983,23.8,23.8,23.2,24.1,22.6,22.1,20.6,19.6,19.3,20.3,21.3,22.4
1984,23.3,22.4,23,23,22.1,20.8,19.4,18.8,19,20.3,21.8,22.6
1985,23.5,23.8,22.6,23.1,22.4,20.4,19.9,19.5,19.2,19.9,22.3,23.5
1986,23.6,22.3,23.5,23.3,22.2,20.9,19.3,18.8,19.7,21.7,22.9,23.2
1987,24.3,23,23.3,23.7,23.3,20.9,19.4,20.8,19.6,20.9,21.9,23.4
1988,24.5,24.2,23.8,23.6,22.2,22.2,20.3,20.8,20.6,20.8,22.3,23.1
1989,23.8,22.3,23,23,21.9,20.6,19.8,19.3,19.5,20.2,21.4,22.9
1990,23.3,24.3,23.5,23.2,22.5,20.3,19.7,19.4,20.3,20.9,22.7,23.3
1991,23.4,24,23.7,22.7,22.6,20.4,20.7,19.3,19,20.9,22,23.2
1992,23.6,24.2,23.3,23.5,22.7,21.9,20.6,19.6,20.1,20.2,22,23.1
1993,23.2,22.8,22.9,23,22.8,20.5,18.8,18.7,18.8,19.8,21.8,22.6
1994,24.5,23.4,23.7,23,22.2,20.3,20.3,19.6,19.9,21.7,22,23
1995,24.2,23.3,23.3,23.2,22.5,20,20.1,19.7,19.5,20.9,21,22.7
1996,24.1,23.6,22.8,23,22.5,20.9,19.4,18.3,18.8,19.8,21,23.1
1997,24.2,23.1,23.7,23.2,22,21.8,20.2,19.2,19.3,21.2,22.9,23.2
1998,23.6,24.3,24.1,24.1,21.9,21.5,19.9,19.9,20.6,20,21.4,23.4
1999,24.2,23.2,22.9,22.9,22.1,20.7,20,19.2,19.5,19.6,21.7,22.9
2000,23.9,22.3,23.2,22.7,21.7,20.1,19.9,18.8,18.8,20.1,22.7,22.9
2001,23,23,23.3,22.7,22.5,20.6,19.9,19.1,19.3,20.6,22.1,23.1
2002,23.9,23.1,22.8,22.8,22.2,20.9,20.4,20,19.8,21.2,22.1,23.4
2003,24.1,23.5,23.6,23.8,23.7,22.1,19.8,19.6,19.6,21.6,22.1,22.6
2004,25.1,23.9,23.4,23,22.7,20.2,20,19.7,19.5,19.7,21.4,22.3
2005,23.3,23.6,23.2,22.9,22.3,21,19.6,18.6,19.5,20,21.9,23.2
2006,23.9,23.5,23.4,22.5,21.7,20.8,19.3,19.6,19.7,21.1,22.9,23.7
2007,24.4,23.7,23.4,23,22.5,21.2,20.3,19.4,19.8,20.6,22.2,23.3
2008,23.7,24,22.4,23.3,21.1,19.5,19.2,19.4,19.4,21.4,22.9,23.2
2009,23.8,23.8,23.1,23.5,22.1,21.5,19.9,19.5,19.8,21.1,22.6,24.3
