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