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