1901,18.6,18.6,21.2,24.3,24.8,23.2,23,23,23.2,22.3,20.9,18.9
1902,18.3,18.6,22,24.1,25.2,24,23.5,23.7,22.2,22.4,20.7,19.4
1903,18.3,18.6,21.4,23.9,24.6,23.4,23,22.9,22.3,21.9,19.5,18.2
1904,17.8,18.4,21.3,24,24.3,22.6,22.6,22.9,22.7,22.5,20,18.6
1905,17.8,18.2,20.9,22.9,24.8,24.1,23.4,23.3,22.7,22.4,20.8,18.7
1906,18.5,18.9,20.8,24.4,25.7,23.4,22.9,22.9,21.9,22.2,21,19.2
1907,18.3,18.9,21.4,23.3,24.6,23.2,23,22.4,22.8,22.5,20.8,19
1908,18.3,18.4,20.7,24.5,24.6,23.8,22.5,22.6,22.7,22.5,20.1,18.5
1909,17.8,18.7,21.7,23.7,24.7,23.5,22.5,23.1,21.9,22.2,20.8,19.3
1910,18.2,19,21.8,24.3,25.2,23.2,23.4,22.5,21.7,21.8,19.3,17.9
1911,18.3,17.8,21.3,23.7,24.7,23.3,23,22.7,23,22.3,20.9,19.7
1912,18.2,19.7,21.8,24.6,25.7,23.6,23,23,22.7,22.1,20.1,18.5
1913,17.6,18.9,21.4,24.3,25.3,23.3,22.7,23.1,23,22,20.2,19.2
1914,18,19,21.5,23.8,25.5,24.2,23.1,22.9,23,22.6,21,19.5
1915,18.6,19,21.5,24.3,25.4,23.9,23.6,23.6,22.8,22.5,20.9,18.5
1916,17.9,18.5,21.9,24.5,24.9,22.7,23.3,22.8,22.3,21.9,20.3,18.5
1917,17.8,18.3,21,23.9,24.2,22.6,23.5,22.9,22.1,21.3,20.1,18.5
1918,17.8,18,21,23.5,23.8,23,23.9,23.4,22.7,23,21.5,19
1919,18.8,19.1,21.3,24.5,24.8,23.3,23.2,23,22.8,22.5,20.8,19.1
1920,18.4,19.1,22,24,25.3,23.7,23.1,23.2,22.8,22.7,20.8,18.7
1921,18.7,18.7,21.9,23.9,25.5,23.5,23.1,23,21.9,22.3,20,18.8
1922,18.4,18.7,21.9,24.4,24.9,23.2,22.7,22.9,22.4,22.1,20.6,18.3
1923,18.1,18.5,21.4,23.9,24.9,24.1,22.3,22.9,22.3,22.5,20.9,19.8
1924,18.5,19.3,22.2,25.1,25.8,23.7,23,23.2,22.5,22.3,20.4,19.1
1925,18.2,18.2,21.9,24.9,24.3,23.1,23.1,23.2,23,22.8,21.1,19.6
1926,18.9,19.4,22.1,23.8,25.6,24.2,23.9,23.3,22.7,22.4,20.6,19.4
1927,18.7,19.3,22.2,24.6,25.4,23.4,22.7,23.1,22.9,22.4,20,19.6
1928,19,18.8,21.6,24.6,25.8,23.7,23.1,22.8,22.8,22.3,21,19.2
1929,18.5,18.9,21.9,24.1,25.2,23.2,23.5,23.7,23.1,22.2,21,19.3
1930,18.3,18.7,21.5,24.2,24.7,23.7,23.2,23.2,22.8,22.6,20.5,19.6
1931,18.7,19.8,21.7,25.2,25.7,24.6,23.1,23.1,22.4,22.3,20.9,19.1
1932,17.8,18.4,21.6,23.9,24.8,23.4,22.7,23.5,22.8,23,21,19.2
1933,18.3,19.4,21.5,23.8,23.8,22.5,22.9,22.6,22.2,22.2,21.2,19.2
1934,17.9,18.8,21.2,24.1,24.8,23.1,22.8,22.9,22.5,22.9,18.9,18.7
1935,17.9,19.1,21.1,23.1,25.5,23.6,22.7,22.9,21.9,23.1,20.2,19.7
1936,18.5,18.8,21.7,23.9,25.5,22.4,22.8,23.1,23.1,22.9,21.7,19.6
1937,18.3,19.6,21.8,23.6,25.1,23.2,22.4,23.3,22.9,22.5,20.7,19.4
1938,19.4,18.8,22.5,24.3,24.9,22.2,22.6,23,22.3,21.5,20.3,19.2
1939,18.6,19.6,21.2,23.7,25,23.4,22.6,23.1,22.7,23,20.3,18.8
1940,17.5,19.3,20.3,23.8,25.1,23.4,22.9,22.7,23.1,22.8,21.5,19.5
1941,18.5,20.1,22.9,24.3,25.3,23.2,23.5,23.9,23.2,22.8,21.6,20.8
1942,18.7,19.7,22.8,22.4,24.9,22.6,22.5,22.9,22.4,22.3,19.9,19.6
1943,19,19.4,22.1,22.8,23.4,21.7,22.6,22.7,22.2,21.1,20.3,18.7
1944,18.6,18.7,21,22.5,24.7,23,22.8,23.3,22.9,21.6,20.3,20.2
1945,18.1,19.2,22.1,22.5,24.2,22.8,23,23.4,22.6,21.5,19.9,18.9
1946,17.8,19.2,22.2,22.5,23.6,22,22.9,22.8,22.5,22.1,20.1,20.7
1947,19,19.6,22.3,23.3,24.1,23.2,23.3,23.6,22.2,21.7,19.5,19.8
1948,19.5,19.6,22.1,22.8,24.2,23,23.3,23.4,22.7,21.6,20.9,19.2
1949,19,19.1,22.5,22.7,23.5,22.5,23.3,23.4,22.4,21.6,19.4,19.3
1950,18.5,19,21.6,22.9,24.2,22.9,22.6,23.4,22.6,22,19.5,19.6
1951,18.6,19.2,21.8,23.4,24.3,22.1,23.2,23.4,23.2,22.2,21.4,19.1
1952,18.8,20,21.2,24.6,25.2,23.5,23.3,23,22.9,23,20.7,20.7
1953,18.7,20,22.5,24.2,24.7,23.5,23.1,23.3,23,21.8,19.8,19.4
1954,18.6,20.2,22,23.1,24.3,22.9,22.7,22.9,22,21,19.3,19.9
1955,19.5,20.1,22.1,22.9,24.2,23,23.3,23.3,23.1,22.6,19.4,19
1956,18.8,18.8,22.3,23.8,24.2,22.5,22.5,23.1,22.8,22,21.1,19
1957,18.8,18.6,21.4,23.6,24.6,24.1,23.4,23.5,22.9,23.7,21.9,21
1958,19.1,20.1,22.1,24.7,25.7,24.5,23.6,23.7,23,22.7,21.6,20.2
1959,19.9,20.1,22.1,23.7,25.2,23.5,22.8,23.3,22.8,22.8,21,20.2
1960,19.2,19.5,22.1,23.3,24.1,23.4,23.6,22.7,22.8,22.4,21,20.1
1961,18.9,18.3,21.4,23.6,23.9,22.4,22.6,23.4,22.3,21.7,20.8,19.1
1962,17,19,20.7,23.8,24,23.6,23.2,22.8,22.3,22.4,19.8,18.7
1963,18.7,18.7,21.7,23.6,24.8,22.7,23.3,22.6,22.6,22.2,21.4,19.6
1964,16.9,18.3,21.1,24.1,25.2,23.1,22.6,22.4,21.8,21.2,19.6,17.3
1965,17.7,18.4,20.7,23.2,24.5,23.1,22.9,23,22.6,22.7,21.3,19.8
1966,18.3,19.2,21.2,23.4,24,23.8,23.5,23.6,22.6,22.6,20.7,19.2
1967,17.8,18.3,21.7,24.1,25.1,23.9,23,23.4,22.5,22.1,20,20.7
1968,17.9,18.5,21.5,23.1,24.2,23.5,22.9,23.5,22.7,21.4,20.9,19.3
1969,18.1,19,22.1,24.4,25.8,23.5,23.1,23.3,22.2,22.6,21.2,20.3
1970,18.2,19.1,20.9,24.5,24.5,23.2,23.4,23,22.4,22.4,20.7,17
1971,17.8,18.4,21.5,24.3,24.6,23,23.2,22.7,22.5,21.5,20.1,18.9
1972,17.2,18.2,21,23.6,24.7,24.3,23.4,23.2,22.9,23.7,21.2,20.5
1973,17.4,19.5,21.4,25.2,25.6,23.9,23.4,22.2,22.9,22.3,20.4,19.2
1974,17.5,18.6,21.9,24.8,24.1,22.9,22.9,22.8,22.4,21.9,18.9,18.1
1975,17.5,18.7,20.9,23.9,24.8,23.2,22.5,23,22.2,22.3,19.6,17.2
1976,17.3,18.3,21.5,23.2,24.2,23.4,22.9,23,23,23.1,22.1,19.8
1977,17.6,19.5,22.7,25,25.4,23.8,23.1,23.6,22.8,23.3,22.5,19
1978,18.4,19,21.2,24.5,25.1,22.9,22.4,23.5,22.5,23.2,22,21.3
1979,20,19.2,21.8,24.5,25.2,24.6,24,23.7,23.4,23.8,22.9,20.6
1980,18.9,20.1,22.5,25.4,26,23.3,23.9,23.1,23.2,23.6,22.1,19.1
1981,18.8,19.5,22.1,24.6,26,23.3,23.7,23.2,23.5,23.5,20.9,20
1982,19,19.9,21.3,24,25.6,24,23.6,23.4,22.9,23.6,22.3,20.3
1983,18.5,18.8,21.3,23,25.6,25,23.8,23.5,22.8,22.9,19.5,20.1
1984,19.3,20.5,23.4,25.2,26,23.5,22.9,23.1,22.7,22.5,20.9,19.1
1985,19.4,19.2,22.6,24.4,25.3,22.8,23,22.9,23.1,21.7,20.2,20.1
1986,19.2,19.4,22.3,24.4,25.8,23.9,23.8,22.9,23.5,23,20.9,19.7
1987,19.2,19.5,21.7,24.5,25.6,23.5,24,23.3,23.6,23.1,21.9,20.8
1988,19.2,20,21.9,24.7,26,23.8,22.9,23.2,22.7,22.4,21,19.3
1989,18.7,18.8,22.2,24.3,25.4,23.4,23.2,22.8,22.7,22.6,21.9,19.8
1990,18.8,19.7,22,23.7,24.7,23.6,23.4,23.1,23,23.3,21.3,20.4
1991,18.4,19.4,21.5,24.8,25.6,24.5,23,23,23.3,22.4,21.6,18.9
1992,17.8,18.5,21.2,23.5,25.3,24,23.3,22.9,22.8,22.5,22,18.8
1993,17.9,18.7,21.5,23.5,25.2,24.4,23,23.3,22.3,22.8,22.2,19.7
1994,18.9,19.2,22,24.4,25.2,23.5,23,23.3,22.5,22.4,21.2,18.3
1995,17.9,19.4,21.4,23.9,25.3,24.3,22.9,23.6,23.1,22.6,20.4,19.2
1996,18.7,19.5,22.6,23.9,24.9,24.1,23.6,23.3,23.3,21.8,20.8,19
1997,18,17.7,21.6,23.8,25.4,24.3,23.9,23.2,23.6,23.4,22.7,21.1
1998,19.5,19.4,21.6,25.2,26.3,24.3,24.1,24.1,23,22.7,20.9,19.6
1999,17.7,20.2,21.8,24.3,24,22.8,23,23.6,22.8,23,20.9,18.6
2000,19,19.2,20.6,24.6,24,23.4,23,23.3,23.2,23,20.9,19.2
2001,19.1,19.3,21.3,24.4,25,24,23.2,23.3,23.5,22.6,21.8,20.1
2002,18.5,20.2,22.5,24.9,26,23.8,24.5,23.4,23.3,23.3,21.8,19.8
2003,19.3,20.1,22.5,24.6,25.8,24.4,23.6,24.2,23.3,23.4,22.2,19.6
2004,18.8,19.7,23.2,24.6,24.6,23.7,23.5,23.5,23,22.3,21.5,19.6
2005,18.5,19.2,21.3,24.2,25.5,24.2,23.4,23.8,22.8,22.7,20.9,19.6
2006,19.3,20.1,21.7,23.9,24.7,23.7,24.3,23.5,23.2,23.1,22.1,19.9
2007,19.3,19.5,22.3,25,25.6,23.9,23.8,23.4,22.5,22.8,20.9,19.9
2008,18.7,18.6,21.7,24.1,25.4,23.7,23.8,23.2,22.8,23.5,21.9,20.6
2009,19.5,20,22.9,25.1,25.6,23.7,23.4,24.2,23.2,22.6,21.4,20.4
