1901,21,21.9,22.7,23.3,23.5,23.7,23.7,23.6,23.6,23.5,22.8,21.5
1902,20.1,21.8,22.7,23.2,23.7,24.3,24,23.7,23.5,23.6,22.8,22.3
1903,21.2,21.2,23.5,24,24.1,23.2,23.7,23.3,23.2,23.2,21.8,19.3
1904,18.9,20.3,22.3,22.6,23.6,23.7,23.7,23.9,23.9,23.8,22.2,20.6
1905,21.6,22.5,23.1,24,23.7,23.7,23.9,24.2,24,23.9,23.1,23.7
1906,22.2,22.8,23.2,24.5,24.7,24.2,24.1,24.1,24.2,23.5,22.2,21.7
1907,20.6,21.8,22.1,23.1,23.3,23.5,23.7,23.4,23.8,23.5,22.8,20.1
1908,20.6,21.4,22.4,23.2,23.5,23.7,23.7,23.5,23.7,23.6,21.8,21.3
1909,20.7,21.7,22.5,23.1,23.4,23.7,23.5,23.8,23.8,23.8,22,20.6
1910,21.2,20.9,22,23.1,23.5,23.5,23.8,23.8,23.3,23.4,22.6,20.3
1911,20.3,21.3,22.5,23.5,23.8,23.9,24,24.1,24.1,23.8,24,22.7
1912,21.4,22,23.9,23.7,24.9,24.4,23.6,23.3,23.7,23.4,21.8,21.4
1913,20.4,21.9,23.1,23.8,23,23.4,23.2,23.4,23.7,23.5,22.2,21.4
1914,20,22,22.9,23.9,24.9,23.6,23.5,23.6,23.7,23.3,23.1,22.2
1915,20.9,22.6,23.1,23.7,23.9,24.1,23.7,24.1,23.5,23.4,22.2,19.9
1916,19.6,21.4,23.1,23.5,23.6,23.3,23.5,23.5,23.4,23.1,21.6,20.5
1917,20.5,21.2,21.8,23.7,23.6,23.2,23.4,23,23.2,22.8,22.1,20.5
1918,19.4,19.7,21.9,22.5,23.1,23.5,24.1,23.7,23.9,23.6,23.4,22.2
1919,21.3,22.1,23.7,23.7,24,23.5,23.5,23.5,23.6,23.4,22.4,21.7
1920,19.5,21.7,22.9,23.4,24.1,23.9,23.6,23.9,23.8,23.1,23.2,21.5
1921,20.1,21,22.7,23,23.1,23.5,23,23.4,23.2,23.1,21.8,21.2
1922,21.2,21.9,21.8,23.2,23.7,23.5,23,23.3,24,23.2,22.2,21
1923,20.1,20.7,22.1,22.6,22.8,23.2,22.8,22.8,23.1,23.1,22.9,21.8
1924,21.1,21.7,22.6,22.9,23.6,23.4,22.9,23.5,23.3,22.7,23,19.9
1925,20.8,20.6,22.3,22.3,23.7,23.5,23.5,23.6,23.7,23,22.6,20.2
1926,20.7,21.8,22.5,24.1,24.5,24,23.7,23.3,23.7,23.1,22.6,21.7
1927,20.6,21.6,23.2,22.6,23,23.3,23.3,23.4,23.6,23,22.8,21.6
1928,22.1,21.3,23.1,22.9,23.7,23.4,23.6,23.6,23.5,22.7,22.3,22.2
1929,21.4,21.4,21.7,22.8,24.2,23.5,23.4,23.5,23.6,23.2,22.3,22.3
1930,20.1,21.1,21.8,23.2,23.7,23.7,23.6,23.9,23.7,23.4,23,22
1931,21.7,21.6,23.5,24.1,24.1,24.1,23.7,23.8,23.5,22.4,22.1,21.3
1932,20,21.3,21.9,23.4,24,23.8,23.4,23.9,23.3,23.4,22.7,20.9
1933,20.4,22,22.2,23.6,24.2,24.3,23.5,24,23.7,23.2,21.9,21.4
1934,19.6,20.5,21.9,22.6,24,23.9,23.4,23.6,23.8,22.8,23.1,20.9
1935,21.5,22.1,23.5,23.5,23.6,23.8,23.8,23.8,23.7,23.8,23.5,21.7
1936,20.5,21.7,21.9,23.9,24.1,23.8,23.7,23.3,23.5,22.7,22.5,22.3
1937,21.3,21.8,24,23.5,23.2,23.5,23.4,23.4,23.2,22.8,22.8,21.4
1938,21.4,21.6,21.5,22.7,22.8,23.3,22.8,22.9,23.3,23.4,23.1,21.8
1939,21.1,21.1,22.1,23,23.6,23.6,24.4,23.9,23.7,23.5,23.5,19.8
1940,18.7,21.5,22.8,23.4,23.5,23.8,24,23.7,24.1,23.8,23.1,22.1
1941,22.1,22.2,22.7,23.9,24.5,24.1,24,24.3,23.8,24,23.7,22.1
1942,20.1,21.9,22.4,22.7,23.1,23.6,23.4,23.2,23.3,23.4,22.7,21.5
1943,19.3,20.6,22.1,22.2,23.4,23,23.3,23.1,23.4,23.3,22.4,20.9
1944,20.9,21.7,22.4,23.2,23.4,23.2,23.4,23.5,23.9,23.7,22.7,20.7
1945,20.8,21.9,22.3,22.7,23.1,23.2,23.8,23.4,23.4,23.1,23,21.6
1946,20.2,21.8,23.3,23,23.4,23.6,23.7,23.3,23.6,23.1,22.9,22.4
1947,22.1,21.7,23.2,22.8,23.5,23.2,23.5,23.5,23.5,23.4,22.1,21
1948,20.4,21.8,22.6,23,23.4,23.6,23.5,23.6,23.7,23.6,20.4,21.8
1949,20.2,21,22.3,23,23.4,23.6,23.9,23.2,23.7,23.4,22.2,21.4
1950,21.3,21.5,22.8,22.8,23.4,23.2,23,23.9,23.5,24,23.3,20.3
1951,21.1,21.3,22.6,23.5,23.9,23.9,23.4,24.1,23.8,23.9,23.4,21.6
1952,21.1,22.7,22.6,23.5,23.8,23.6,23.5,23.2,23.5,23.5,22.7,20.1
1953,20.8,21.9,22.4,23.6,23.5,23.4,23,23.2,23.3,23.6,22.4,21.3
1954,21.7,21.3,22.6,23.3,23.3,23.3,23.1,23.2,23.3,23,21,20.3
1955,20,21,21.6,22.2,23.8,23.3,23.6,23.1,23.4,23.5,21.9,20.2
1956,19.3,21.7,22.6,23.2,23.5,23.3,23.2,23.4,23.5,23,21.3,20.3
1957,19.7,20.6,21.9,22.7,23.3,23.3,23.5,23.3,23.5,23.3,22.2,21.6
1958,21.1,21.3,22.4,23.6,24.3,24,23.9,23.2,23.7,23.5,21.4,20.8
1959,20.2,21.8,21.7,22.7,23.5,23.5,23.2,23.7,23.3,23.3,22.7,22.7
1960,21.1,21.7,22.8,23.5,23.6,23.9,23.3,24,23.5,23.3,23.2,21.4
1961,20,21.6,22.8,22.9,23.5,23.4,23.3,23.7,23.3,23.1,22.1,22.1
1962,20.3,19.8,22.5,22.9,23.3,23,23.6,23.4,23.7,23.1,22.2,20.9
1963,18.2,20.6,21.5,23,23.6,23,23.1,23.5,23.8,23.5,23.4,21.1
1964,22.2,21.9,22,23.1,23.2,23,23.6,23.6,23.7,23.7,21.9,20.7
1965,18.9,22.1,22.2,22.8,23.3,23.6,23.4,23.4,23.1,23.7,22.9,22.6
1966,21.8,22.2,23.1,23.2,23.5,23.4,23.6,23.3,23.2,23.6,22.7,22.5
1967,20.3,21.3,22.2,22.8,23.7,24,23.3,23.9,23.3,22.8,22.4,20.2
1968,20.2,20.9,22.1,22.7,23.4,23.2,24.1,23.8,23.7,23,22.8,22.2
1969,22.1,21.8,23,23.7,24,23.7,23.7,23.3,24.3,23.8,22.6,21.4
1970,21.7,21.3,22.8,22.7,23.5,23.5,23.5,23.2,23.3,23.1,22.6,22
1971,19.3,21,22.1,23.1,23.9,23.3,23.7,23,24.1,23.4,21.7,21.8
1972,19.4,21.8,21.6,21.8,23.9,23.3,23.8,23.1,23.5,23.8,23.3,22.1
1973,21.1,22.1,23.3,24.2,23.8,23.5,23.9,23.7,23.8,23.3,22.6,20.6
1974,20.1,21.4,21.8,22.9,23.3,24,23.7,23.8,23.4,23.5,22.5,21.6
1975,21.6,22.1,23,23.3,23.4,23.5,23,23.2,23.3,23.3,22.3,20.3
1976,19.1,21.8,21.9,23.1,23.8,23.6,23.5,23.3,23.7,23.4,21.7,21.6
1977,21.4,21.1,21.9,22.9,23.4,23.2,23.4,23.1,23.3,23,22.3,21.9
1978,21.8,21.5,22.8,22.6,23,23.5,23.1,23.3,23.2,22.8,22.5,21.9
1979,21.5,21.9,23,22.7,23,23.2,23.6,23.3,23.3,22.5,23.1,21.9
1980,21,21.8,23.2,23.8,23.8,23.5,23.7,23.3,23.2,23.7,23.1,21.6
1981,20.4,21.9,22.3,22.7,23.2,23.1,23.2,24.2,24,23.4,22.9,20.9
1982,19.9,22.2,22.7,22.6,23.6,23.2,23.6,23.1,23.5,23.3,23.5,21.3
1983,21.2,22.2,22.9,24.6,24.7,23.6,24.4,24.1,24.1,24,21.9,21.6
1984,20.9,22.2,22.5,23.8,23.4,23.4,23.3,24.1,22.8,22.8,22.6,22.2
1985,21,22.4,22.8,23.3,23.1,23.6,22.7,23.6,23.4,23,23.1,21.2
1986,20.3,21.5,22.5,22.9,24.1,23.7,24,24,23.5,23.1,22.8,21.4
1987,21.1,21.4,22.9,23.6,23.9,24.1,24.3,23.4,23.8,24.3,23.5,20.7
1988,21.8,22.8,23.8,23.6,24,23.6,23.6,23.2,23.5,23.3,22.3,20.8
1989,22.3,21.4,22.7,24,23.7,23.5,23.8,23.7,23.8,23.6,22.3,20.9
1990,21.7,22.3,22.4,23.8,23.7,24.5,23.9,23.9,23.8,23.4,22.7,21.9
1991,22.7,22.8,24,24.5,24.2,24.3,24.1,23.7,24.4,23.6,22.9,22.6
1992,21.5,22.3,23.1,24.9,24.6,23.9,23.6,24,24.2,23.1,22.6,22.7
1993,21.7,21.5,23,23.3,23.9,23.8,23.8,23.7,24.1,23.7,23.2,22
1994,22.4,23,23.1,24.1,24.6,23.5,24.1,24.1,24.2,23.6,23.2,23.2
1995,21.7,21.5,22.8,24.6,24.1,23.5,23.7,24.1,24.3,23.7,23.5,20.4
1996,21,21.3,22.5,23.3,23.1,23.2,23.7,23.4,23.9,23.5,22.9,21.1
1997,20.2,22,22.2,22.4,23.7,24.1,24,23.8,23.8,24.4,23.4,23
1998,23.3,23.3,23.9,24.3,24.4,23.6,24,23.4,24.1,24.1,23.6,23
1999,21.7,22.3,22.5,23.3,23.2,23,23.8,23.7,24,24,22.7,20.3
2000,22.1,21.7,23,23.3,23.6,23,23.9,24.4,24,23.9,22.4,23.2
2001,22.6,22.1,22.9,24.5,24,23.4,24.2,24.1,24.2,24.2,21.7,19.9
2002,21.4,21.8,23.3,23.2,23.2,24,24.1,23.2,23.7,23.3,23.4,23.5
2003,21.4,22.2,22.8,23.7,24,23.3,23.5,23.9,23.8,23.7,23.2,21.2
2004,21.8,21.9,23.5,23.8,24.5,23.7,24.2,24.3,24,23.2,23.5,21.4
2005,21.4,23.4,22.8,24.1,23.8,24.2,23.9,24.1,24.8,22.3,23.2,22.2
2006,21.9,22.9,23.4,23.4,23.3,23.5,24.2,23.9,24.2,24,23.9,22.2
2007,22.4,22.3,23.5,23.4,24,22.9,24,23.4,24.1,23.7,22.5,23.1
2008,22.5,21.6,23,23.8,23.4,23.7,23.9,23.5,24.4,24.5,22.8,21.9
2009,20.8,22.4,23.1,23.7,23.9,24.6,23.8,24.1,24.1,24,22.7,22.3
