1901,18.9,19.1,20,21,22,22.6,22.6,23,23.1,22.3,20.7,19.6
1902,18.5,19,19.4,20.8,21.6,22.3,22.8,22.7,22.7,22.4,21.3,20.2
1903,19.3,19.5,19.8,20.7,21.7,22.7,22.8,22.8,22.3,21.9,21.1,19.5
1904,19.1,19.1,19.7,20.5,21.8,22,22.2,22,22.1,21.9,21,19.9
1905,18.5,19,19.8,21.2,22.4,22.9,22.5,22.7,22.5,22.4,22.1,20.4
1906,19.3,19.2,19.6,20.6,21.8,22.1,22.5,22.6,22.6,22.4,21.4,18.9
1907,18.7,18.2,19.4,20.1,21.8,22.4,22.9,22.6,22.6,22.5,21.9,20.4
1908,18.9,18.7,19.7,21.2,21.8,22.5,22.8,23,22.7,22,21.7,20.5
1909,19,19.1,19.9,20.6,21.9,22.1,22.6,22.2,22.6,22.3,21.2,19
1910,18.3,18.5,19.2,20.1,21.1,22.3,22.5,22.8,23.1,22.1,21,19.5
1911,19,18.8,19,19.9,20.8,22.3,22.5,22.7,22.6,22.7,22.2,20.3
1912,19.6,18.9,20.3,21.1,22.1,22.4,22.8,22.7,22.7,22.5,21.6,20.6
1913,19.3,19.1,20,20.3,22,21.3,22.1,21.9,22.2,22.6,20.7,19.3
1914,18.4,18.8,18.9,20.6,21.4,21.9,22.2,22.2,22.5,22.2,21.1,20.6
1915,19.3,18.6,18.6,20.2,22,23,23.3,23.3,23.4,22.9,21.9,19.9
1916,19.4,18.9,18.7,20.2,21.8,22.6,22.4,22.2,22.5,22,21.1,19
1917,18.5,18,19.3,20.2,21.1,22.1,22.5,22.5,22.5,22.6,20.6,18.9
1918,17.5,18.7,19.1,20.2,20.8,21.8,22.3,22.6,22.1,22,21,19.5
1919,18.3,18.5,19.3,20.6,21.9,22.4,22.1,22.9,22.3,22.2,20.7,19.4
1920,18.4,18.4,19.4,20.7,22,22.4,22,22.2,22.3,21.7,21.2,19.7
1921,17.7,18.5,19,20.5,22,22.9,22.2,22.3,22.8,21.9,20.9,19.4
1922,17.5,18,18.6,20.9,20.8,22.2,21.9,21.7,22.7,22.1,21.1,19.8
1923,17.8,17.5,18.8,20,21.4,21.7,21.9,22,22.6,22.3,21.2,19.7
1924,19.1,18.5,19.6,22.1,22.6,22.6,23,23.4,22.9,22.6,21.5,20.5
1925,18.9,19,20,20.9,22.6,22,22.3,22.8,23.3,22.5,21.1,20.2
1926,18.5,18.8,20.3,21.9,22.2,22.4,22.8,23.2,23.1,23.4,22.7,20.5
1927,18.2,19,19.6,21.3,21.4,22.6,22.7,22.4,22.1,21.9,21.1,19.5
1928,18.9,18.9,19.1,20.5,21.1,22.4,22.5,22.7,22.6,22,21.5,19.7
1929,19.3,19.4,20.4,20.9,21.9,22.3,22.5,22.6,22.4,21.6,21.3,19.9
1930,19.2,18.6,19.5,20.9,22.1,22.3,22.6,22.9,22.8,22,20.9,19.7
1931,18.5,18.4,19.4,20.8,22.6,22.8,23.4,23.3,23.2,22.9,21.8,20.6
1932,19,19.2,19.5,21.2,23.1,22.7,22.7,23.4,23.4,21.8,20.9,19.9
1933,18.7,19.4,20.4,21.2,22.8,22.7,22.6,23.6,23,23.3,21.7,20.3
1934,18.7,18.7,19.3,20.7,22.2,22.5,22.9,23.2,23.1,23.1,20.7,19.7
1935,18.8,18.5,19.8,21.2,22.1,22.3,22.4,22.9,22.8,22.3,21.4,19.2
1936,19.1,19.1,19.4,21.3,22.5,22.9,22.9,23.3,23,22.9,21.9,20.1
1937,20,19.2,20.7,21.6,22.8,22.8,22.8,22.9,23.7,23,22,20.4
1938,19.9,19.8,19.2,20,21.7,22.3,21.8,22.6,22.6,22.2,21.5,19.9
1939,18.9,18.7,19.2,20.2,21.3,22.1,22.4,22.8,22.8,23.2,21.7,20.1
1940,18.5,19.3,19.8,21.1,22,22.8,23.2,23.1,23,22.6,21.6,20
1941,19.1,19,19.5,21,22.3,23,22.5,23.2,23,22.7,21.9,21
1942,19.6,18.6,20.4,21.5,22.3,22.9,23.2,23.2,23.1,22.9,22,20.6
1943,19.2,19,19.8,20.9,21.5,22.1,22.3,22.7,22.9,22.4,21.5,19.9
1944,18.8,18.7,19.8,21.1,21.5,22.6,22.7,22.8,22.4,22.6,20.7,19.8
1945,17.9,19,19.4,20.6,21.7,22.8,22.3,22.5,22.7,22,20.5,19
1946,18.9,18.6,19.4,20.1,21.7,22.1,22.4,22.4,22.4,22.4,21.2,19.9
1947,19.5,18.7,19.4,20.9,21.6,22.2,22.6,22.8,23,23,22,19.9
1948,19.4,19.4,20.1,21.1,22.7,23,23.1,23.6,23,22.7,21.6,20.2
1949,18.6,18.5,19.2,20.5,21.5,21.6,21.9,22.4,22.4,21.7,20.8,19
1950,18,17.9,18.4,19.3,20.8,21.9,21.8,22.4,22.2,22.1,21,19.2
1951,17.6,17.1,18.2,20.2,21.5,21.5,21.9,23.1,22.7,22.4,21.1,19.1
1952,17.8,17.9,18.5,20.8,22.5,22.6,22.4,22.6,21.7,22.7,21,18.4
1953,17.9,18.7,19.5,21.7,22.3,22.6,22.8,23,23.3,22.4,22.8,20.8
1954,19.8,18.5,20.9,22.4,23.2,22.9,23.5,24,23.6,22.2,21.8,18.8
1955,17.6,18.5,19,19.4,20.8,22.3,22.8,22.6,23,22.6,22.2,19.2
1956,16.7,18.7,19.5,20.2,22.1,22.8,22.9,23,22.6,23.3,21.6,19.7
1957,18.7,18.8,19.7,22.5,23,23.2,23.4,24.2,24,23.3,22.5,20.7
1958,18.8,18.2,20.8,22.8,23.4,23.6,23.8,23.6,24.1,23.3,22.2,20.6
1959,19,20,20.9,22.4,22.4,23.4,23.8,23.3,23.6,24.1,22.5,21
1960,20.1,20.8,21.6,23,24.5,24.2,24,24.8,24.1,23.1,22.5,20.3
1961,19.9,20.5,21.2,22.1,22.9,23.4,23.8,24.5,23.8,23.1,21.7,20.8
1962,20.4,20,19.6,22.2,22.4,23.5,24.1,23.6,23.5,23.6,22,21.5
1963,19.7,20.3,21.3,21.7,22.5,23.6,23.4,23.9,24.1,23,22.6,21.4
1964,19.7,20.3,21.2,22.5,23.1,23.7,23.9,23.8,23.6,23.3,22.9,20.6
1965,18.7,19.3,20.9,21.1,22.6,22.8,23.6,23.7,23.3,23.3,22.3,20.1
1966,19.6,19.9,20.8,21.8,22.4,22.9,23,23.1,22.7,22.6,20.6,19.4
1967,19,19,19.2,20.3,22.1,22.6,22.8,23.3,23,23,21.7,19.8
1968,18.7,17.7,18.6,19.7,22,22.4,23.1,23.2,22.8,22.9,22.1,19.8
1969,19,18.2,20.1,22.1,22.8,22.7,22.8,22.5,23.3,22.7,21.3,19.7
1970,19,18.4,19.6,21.3,22.2,22.3,22.4,22.3,22.7,23.7,21.9,20.2
1971,19.1,20.9,20.9,21.9,21.3,23.8,23.6,23.5,23,21.4,21.6,20.4
1972,19.5,19.2,19.6,22,22.4,23.2,22.8,23,23.4,23,22.8,21.3
1973,19.7,19.1,20.4,21.5,23.2,23,23.5,23.6,23.3,23.4,21.8,19.7
1974,19.8,19.3,20.5,21.3,22.1,22.4,22.8,22.6,22.7,22.6,20.7,20.4
1975,19.5,19.4,19.5,21.6,21.6,22.8,22.9,23.7,22.8,22.6,21.2,20.7
1976,18.4,19.2,19.9,20.5,21.9,21.5,22.7,22.9,23.6,23.1,21.9,19.6
1977,19.2,20.1,20.8,21.9,21.6,23.1,22.6,23.2,22.7,22.3,21.6,20.3
1978,19.5,19.2,20.6,21.2,23,23.5,23.5,23.3,22.6,22.4,22.3,20.4
1979,19.6,20.5,20.8,22.5,22.9,24,23.9,23.9,24,23.7,23.1,20.2
1980,20.1,19.8,20.7,22.2,23.7,24.4,24.3,24.4,23.8,23.2,22.2,21
1981,18.9,19.9,20.3,21.9,23.5,23.2,23.2,23.3,23.8,22.7,22.1,20.2
1982,20.1,20,20.8,22.2,22.8,23.4,22.9,23.1,22.9,22.7,21.7,19.5
1983,19.2,19.3,20.6,21.6,23,23.6,23.9,24,23.7,23.4,21.9,20.9
1984,19.2,19.5,20,21.7,22.1,22.3,22.6,22.6,22.5,22,20.8,19.4
1985,18.6,19.2,19.7,21,22.3,23.2,23.3,23.5,23,22.6,22.1,19.9
1986,19,18.3,20.3,21.4,21.8,23.3,23.7,23.6,23.3,23.1,22.1,21
1987,19.6,20.1,20.6,22,22.8,22.8,23.5,23.9,23.1,22.8,22.3,20.4
1988,20,20.3,20.2,21.7,23.1,23.8,24.2,23.9,23.5,23.1,22.2,20.4
1989,19.9,20,20.6,22,22.6,22.8,23.1,22.9,23.1,23.1,22.2,19.8
1990,19.9,19.8,20.2,21.7,23.1,24.2,24.2,24.5,24.3,23.6,23.1,21
1991,20.4,20.5,20.8,22.3,23.4,23,24.5,23,23.6,23.5,22.6,20.4
1992,19.8,20.4,21.4,23.1,22.6,23.4,24,24.1,23.4,23.2,22.9,21.3
1993,20.7,20.1,20,21.6,23.2,23.6,23.4,23,22.9,23.1,22,20.6
1994,20,20.7,20.7,22.3,23.2,24,23.5,24,24,23.4,23.1,21
1995,19.6,20.2,20,22.2,23.3,23.5,23.9,23.9,24.3,23,22.1,20.8
1996,20.3,19.4,20.3,22.1,23.5,23.6,23.7,23.1,23.4,23.4,22.4,20.3
1997,19.7,20.1,21.1,22.3,24.4,24.7,24.4,24.2,24.5,23.6,23.2,23.4
1998,21,21,21.3,22.4,23.4,24.8,25.1,24.1,24,23.6,23.5,22.2
1999,20.2,19.2,20.8,22.3,23.6,24.1,23.7,24.6,24.1,24,22.4,20.6
2000,19.3,19.3,20,22.4,22.5,23.3,24.2,24.1,24.1,23.1,22.8,20.3
2001,19.1,20.3,21.1,21.9,22.6,23,23.6,24.5,24.5,23.5,22.1,21.2
2002,20.3,19.6,21.2,22.1,22.8,23.7,23.9,24.1,23.7,23.5,23.8,22.3
2003,20.4,20.3,21.9,22.5,23.8,25,24.5,24,24.5,23.8,22.5,21.3
2004,20.5,20.3,20.6,21.6,22.1,23.9,23.9,24.1,23.7,23.2,22,20.6
2005,19.1,18.2,21.2,22.2,23.1,23.7,24.1,24.1,24.4,22.7,22.4,19.9
2006,19.1,18.4,20.6,21.9,23.4,24,23.7,24,24,23.6,22.5,21.1
2007,19.9,20,20.8,21.5,22.6,23.5,23.3,23.5,23.1,22.5,21.3,20
2008,18.7,19.4,20,21.2,22.3,22.8,23,23.2,22.9,22.5,21.1,20
2009,19.4,19.1,19.3,21.4,21.9,22.8,24,23.9,24,24,22.1,21.7
