1901,21.3,19.7,21.6,23.4,23.7,23.2,22.7,21.5,22.3,22.1,21.3,20.4
1902,21.1,19,22.1,23.2,23.7,23.1,22.4,21.9,21.6,22,21.5,21.3
1903,20.7,19.4,21.6,22.8,23.2,23.5,22.7,22.2,22,22.3,21.2,20.4
1904,20.3,19.8,21.1,21.7,22.3,21.7,21.4,21.3,21.2,21.6,20.2,19.3
1905,20.2,19.7,21.6,22.8,22.8,22,21.6,21.4,21.3,21.7,20.2,21.1
1906,20.6,21.1,21.4,23.4,23,22.6,22.8,22.2,21.6,21.5,20.6,20.6
1907,19.7,19.7,21,22.1,22.9,22.5,22,21.1,21.4,22,21.4,20.3
1908,20.2,19.8,20.7,22.7,22.1,22,21.7,21.1,21.7,21.7,20.4,20.8
1909,20.6,20.6,21.5,22.7,22.6,22.6,21,21.9,21.6,22.2,21,19.8
1910,20,20.4,21.1,22.1,21.9,22.1,21.8,21.6,21.2,21.2,20.7,20.3
1911,20.3,19.7,20.6,21.5,22,22.3,21.3,21.1,21.5,21.1,20.3,20.5
1912,19.8,20.2,21.8,22.5,23.4,23.1,21.7,21,21.4,21.4,20.9,20.4
1913,20.1,20,21.5,22.1,22.2,22.4,21.8,21.3,21.6,21.1,20.4,20.3
1914,19.2,19.3,21.6,22.5,23.1,22,22,21.4,21.1,21.2,21.2,21
1915,20.4,21,21.4,23.1,23.2,23.2,22.5,21.6,21.8,22.1,21.3,20.7
1916,20.3,20.2,21.2,22,22.3,21.9,21.9,21.7,21,21.2,20.7,20.4
1917,19.7,19.4,20.6,22.4,22.3,22.3,20.9,21.5,21.5,21.5,20.5,19.7
1918,18.6,19,20.2,21.7,22.9,22.3,22,21.3,21.7,21.5,20.7,20.4
1919,20,20.3,21.9,23.5,23.1,22.8,21.6,20.9,21.3,21.5,20.7,20.5
1920,19.5,20.7,21.8,22.6,22.7,22.4,21.8,22.2,21.5,21.4,20.9,20.2
1921,20.1,19.9,21.5,22.1,22.8,21.9,21.8,21,21.2,21.4,20.6,20
1922,20.3,20.4,21.3,22.8,23,22.8,21.8,21.8,21.6,21.6,20.8,20.5
1923,19.8,20.1,20.5,22.3,22,21.5,21.7,21,21.4,21.4,20.6,20.2
1924,20.2,20.8,21.3,22.9,23.6,22.3,21.4,21.3,21.9,21.9,20.4,19.8
1925,20.8,19.8,21.6,22.3,22.9,21.7,21.8,21.8,21.5,20.9,20.7,19.4
1926,19.6,20.4,21.2,23.1,23.2,22,22.3,21.5,21.6,21.7,20.9,20.3
1927,19.9,20.4,21.7,22.5,23.3,22.3,22,21.5,22,21.5,21.2,20.8
1928,20.8,20.7,21.8,22.4,23.1,22,22.3,22.6,21.6,21.6,20.8,20.6
1929,19.5,20.6,20.7,22.2,23.1,23,21.5,21,21.8,21.2,20.3,20.4
1930,20.4,19.5,21.7,22.8,22.5,22.4,22,21.8,22.1,22.2,21.3,21
1931,21.1,21.4,22.5,23.3,23.7,22.9,22.6,21.7,22,21.9,20.9,20.4
1932,19,19.7,20.7,22.9,23.4,22.8,21.6,21.9,22,21.7,21,20.5
1933,20.3,20.9,21.4,23,23.8,22.8,22,21.9,21.7,21.5,20.7,20.2
1934,20,19.4,21.1,22.2,21.7,22.7,22,21.7,21.4,21.6,21.4,20.4
1935,19.7,20.6,21.8,23.2,22.4,22.7,21.9,21.9,21.7,22.2,21,20.5
1936,20.2,21.1,21.4,22.8,24,23,22,21.5,21.7,21.9,20.9,21.5
1937,21.2,20.8,22.4,23.3,23.2,22.8,21.8,21.4,21.4,21.2,20.9,20.9
1938,20,20.3,21.4,22.8,22.3,22.7,22.3,22.7,22.2,22,20.9,20.9
1939,20.3,20.1,22.1,22.7,22.7,22.6,22.2,21.9,22.1,22.1,21.7,19.3
1940,19.7,19.6,21.5,23,23.7,22.9,22.1,21.5,22,22.2,21.6,20.4
1941,20.8,20.8,21.7,22.5,23.3,22.8,22.3,22.5,21.9,21.8,21.5,21.2
1942,19.8,21,22.3,22.9,23,22.8,22,21.9,21.8,21.9,21,20.1
1943,19.2,19.7,21.5,21.6,22.5,22.2,21.8,21.6,22.1,21.6,21.1,20.3
1944,20.1,19.9,20.5,22.4,23.2,22.6,22,21.6,22.2,21.9,21.7,19.7
1945,19.7,19.9,21.3,22.4,22.4,22.5,22.1,21.2,21.9,21.2,21.2,20.5
1946,20.4,20.1,22.2,22.7,23.4,22.6,22.6,21.9,22,22,21.9,21.7
1947,21.8,20.9,22.6,23.7,23.7,23.3,22.6,22,22.4,22.1,20.7,21.3
1948,20.1,21.6,22,23.6,24.1,23.4,22.4,22.4,21.8,22.3,20.9,21.6
1949,19.2,20.4,21.1,22.5,23.6,22.9,22.7,22.6,22.2,22.1,21.2,21
1950,20.6,20.9,21.5,22.7,23.2,22.8,22.3,22.2,22.1,21.7,21.2,19.7
1951,20.3,20.6,21.4,23.1,22.6,22.7,22.5,22.3,22.2,22.6,21.2,20.7
1952,20.4,21,22.1,23,23.8,23.2,23,21.5,21.9,22.3,21.5,20.6
1953,20,20.8,22.3,23.1,23.3,22.6,22.6,22.2,22.3,22.3,21.6,20.4
1954,20.7,20.8,21.3,23.2,23.9,23.3,22.9,22.1,22,21.7,20.5,20.1
1955,19.6,20.2,20.9,22.7,23.5,22.7,22.5,22.2,22.3,21.8,20.6,19.4
1956,20,20.5,21.2,22.1,22.5,22.9,22.7,21.9,21.4,21.9,20.7,20.3
1957,19.8,19.8,21.7,22.6,23.4,22.9,22.6,22.4,21.9,21.8,20.5,21
1958,19.9,20.5,21.8,22.4,23.7,22.5,22.5,22.1,21.9,22.1,20.7,20.2
1959,19.8,21,21.5,22.8,23.5,24,23.1,22.4,22.4,21.8,20.9,20.8
1960,20.2,20.1,22,22.9,23.2,22.7,23.1,22.6,22,21.8,21.4,20.5
1961,19,20.7,22.2,23.1,23.4,22.7,21.9,21.9,22.1,21.9,21,21
1962,19.3,19.5,22,22.5,23.5,23.1,21.8,22,21.5,21.9,20.7,19.8
1963,18.8,19.3,20.1,21.2,23.1,21.9,22,22.4,21.9,21.6,21.1,20.6
1964,20.6,19.9,21.2,22.1,22.8,22.7,22.5,21.9,21.8,22,20.3,19.8
1965,18.9,20,20.5,22.4,22.6,22.3,21.7,22.1,21.9,21.7,21.4,20.7
1966,20.7,21.1,22,23.2,21.8,23,22.5,22.5,21.4,21.6,21.2,21
1967,19.3,19.2,20.5,22.3,23.6,22.3,22.6,21.5,21.8,21.4,20.5,19.1
1968,19.4,19.2,21.3,21.6,23.7,23.5,22.9,22.1,22.1,21.1,19.7,20.1
1969,20.7,20.3,21.9,22.7,24.5,23.8,22.7,22.4,22.1,21.8,20.6,20.2
1970,20.2,20.3,22.1,22.8,24.4,23.3,23,22.2,22.1,22.4,21.8,21.9
1971,19.4,20.7,20.5,22,22.6,22.6,22.1,22.7,22.5,21.7,20.9,20.4
1972,19.7,20.4,20.4,22.7,23.1,23.2,22.2,21.9,22.4,22.8,22.3,21.7
1973,21.2,21.6,22,23.8,24.6,23.9,23.5,22.5,22.9,21.5,20.3,20.1
1974,19.3,20.3,20.8,23.3,23.3,22.2,22.9,22,22.2,22,21.2,21
1975,20.3,20.8,22,21.9,23,22.7,22.4,21.8,22.5,22.3,21.1,20
1976,19.3,20,21.1,22.6,21.5,22.2,22.6,21.2,22.7,22.6,20.7,20.1
1977,20.8,19.8,20.7,22.8,23.3,23.5,22.6,21.8,21.7,22.7,20.8,19.6
1978,19.8,19.8,22.6,23.2,23.5,23.2,22.4,21.5,21.4,21.2,20.2,20.7
1979,20.5,21.6,22.2,23.2,22.4,22.8,22.8,21.7,21.8,21.4,21.2,19.6
1980,20.2,20.5,21.5,22.7,22.9,23.3,22.4,21.9,22,21.8,21.9,21.3
1981,18.7,19.9,20.7,22.3,21.8,22.2,21.5,21.4,21.8,21.8,20.9,19.4
1982,18.7,19.8,21.6,21.9,22.7,23.1,22.2,21.8,22,22.1,21.8,20.7
1983,20.2,21.2,21.8,22.7,23,23.5,23.2,22.6,22.6,22.1,20.6,19.9
1984,20.1,20.7,22.2,23.1,22.6,22.1,22.4,21.6,22.4,21.8,21.8,21.1
1985,20,22.1,22.4,22.5,23,22.1,22.1,21.7,21.8,22.1,21.8,20.3
1986,19.4,19.6,21.2,22.5,22.5,22.7,22.1,21.6,21.5,21.7,21.6,20.7
1987,19.6,19.6,21.8,23.3,23.9,23.3,22.8,22.8,22.6,22.9,22.4,21.1
1988,21.2,21.7,22.8,23.5,24,22.9,22.6,22.7,22.7,21.9,21.2,19.8
1989,21,20.2,21.4,23.2,23,23.1,23,22.4,22.6,22.8,21.7,20.9
1990,21.1,21.7,21.9,23.4,23.1,21.9,22.1,21.8,22,22.3,22,21.2
1991,21.1,20.9,21.9,22.7,23.5,23.5,23.1,22,22.5,22.2,21.2,20.9
1992,20.2,20,22.7,23.2,23.2,23.2,22.6,22,22,22,21.1,20.1
1993,20.1,20.2,21,22.9,23.7,23.3,22.6,22.1,21.8,21.3,21.6,20.5
1994,20.9,21.1,21.9,23.1,23.2,22.8,21.6,21.6,22.2,21.8,21.5,21.2
1995,20.6,20,22.5,22.2,23.2,23.1,22.1,21.3,21.4,22,21.1,20.4
1996,20.2,19.9,22.1,21.8,22.4,23.1,22.3,21.9,21.9,22.9,21.3,20.3
1997,19.8,20.7,21.2,22.6,22.8,22.5,22.2,22.3,22.1,22.5,21.8,21.4
1998,21.6,21.4,22.9,23.9,23.5,23.1,23.5,22.9,22.1,22,22.4,21.8
1999,21.6,20.2,22.4,22.4,22.6,22.2,22.2,22,21.6,22.2,21.9,20.9
2000,21,21.3,22.1,22.7,22.6,22.7,21.8,22.6,21.7,22.2,21.5,22
2001,21.8,21.1,22,23.9,23.2,22.8,22,21.9,22.4,22.6,21.5,19.4
2002,20.9,20.6,22.1,22.6,23.7,23.1,22.5,22.3,22.1,22.9,21.9,20.7
2003,20.4,20.4,22.2,22.5,23,22.3,23.2,21.4,22,22.5,22.4,20.9
2004,20.4,21.7,20.5,24.2,23.5,21.7,22.9,22.3,22.6,21.7,21.7,21.4
2005,21.6,20.9,21.2,22.8,23.4,22.6,23.4,22.4,21.8,22.1,21.7,20.4
2006,21.7,21.6,21.5,22.7,22.9,23.7,21.9,22.2,22.8,22.4,22.4,21.3
2007,21.4,20.6,21.3,22.4,23.9,23.3,23.5,22.2,22.8,22.7,20.8,20.3
2008,20.2,19.9,21,22.7,22.1,23,22.5,21.9,22.4,22.5,22.1,21.3
2009,19.3,21.2,22.3,21.8,22.1,21.9,22.4,22.3,22.3,21.4,21.6,20.3
