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