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