1901,17.7,18.1,19.3,20.5,22,22.7,22,22.2,22.1,21.5,18.9,18.3
1902,16.9,17.7,20.1,20.7,22.3,22.5,22.5,21.3,23.2,21.9,20.1,18.7
1903,18.2,19.3,19.8,20.4,21.5,23.4,22.6,22.4,23,21.2,18.8,17.5
1904,17.8,18.2,19.2,20.9,22.1,22.6,22,22,22,21.2,19.1,18.6
1905,17.3,18.3,19.4,20.8,22.5,23,22.1,22.3,22.3,21.6,19.5,18.7
1906,16.8,17,18.8,20.1,22,22.3,22.4,22.1,22.6,21.4,19.6,18.2
1907,18.3,17.8,19.3,20.8,22,22.5,21.6,21.5,21.7,21.3,19.8,18.2
1908,17,17.3,19.4,21.6,22.7,22.7,22.1,22,22,20.7,18.6,18.5
1909,17.5,17.9,20,21.1,23,22.4,22.6,22.3,21.9,21.1,18.6,18.4
1910,16.6,17.1,17.4,19.4,21.5,22,21.8,22.1,21.9,21,18.3,16.9
1911,17.6,18,19.4,21.3,20.4,21.5,22,22,22.1,21.9,20,18.8
1912,17.9,16.5,19.8,22,22.2,22.2,22,22.1,21.9,21.5,18.5,18.9
1913,18.5,19.2,19.5,18.9,20.5,21.3,21.8,22,21.6,20.9,18.7,18.2
1914,17.2,18,17.6,20.3,21,21.7,22.4,22.5,21.7,21,18.8,19
1915,17.5,17.2,17.2,19,22.6,23.1,22.8,22.5,22.2,21.3,19.4,18.7
1916,19,17,18.3,19.8,21.6,22,22.8,21.8,21.7,20.8,18.5,18.7
1917,18,17.6,19.4,20.3,22.1,22.2,22.2,22,21.9,21.1,18.9,17.5
1918,17.3,18.7,19.5,20.9,21.7,22,22.5,22.2,22.2,22.2,19.5,18.5
1919,16.9,18.2,19.5,20,21.5,21.8,22,22.1,22,21.6,20.3,18.7
1920,18.2,17.5,19.3,22,22.2,21.7,21.9,21.8,22,21.1,18.9,18.3
1921,17.4,17.7,19.5,20.6,20.3,22,22,22,22,21,19.5,18.7
1922,18.3,18.5,19.8,21.7,22,22.4,22.2,22.5,22.3,21.3,19.5,18.8
1923,17.9,18.1,19.6,21.1,22.3,22.5,22.3,22.3,22,21,18.7,19
1924,17.9,16.4,19.1,21,22.5,23,22.5,22.3,22.1,21,18.5,19
1925,18.5,17.9,18.8,19.7,20.9,21.9,22.1,22.4,22.1,22.1,19.6,18.6
1926,17.6,17.7,19.5,20.7,21.1,22.5,22.8,22.3,22.6,21.8,18.7,19.2
1927,17.3,19.2,19.4,21.1,22.8,23.2,22.1,22.8,22.5,21.4,19.2,18.7
1928,17.1,18.6,19.5,20.3,21.2,23.5,22.6,22.7,22.8,21.9,19.2,18.4
1929,18.5,19.5,20.4,22,22.1,22.1,21.8,22.1,22,21.5,20.1,18
1930,18.2,18,19.1,19.9,21.8,22,21.8,22.4,22.2,21.6,18.9,17.7
1931,17.6,18,18.7,20.3,21.6,22.5,22,22.5,22.5,21.7,18.8,19.6
1932,19,19.1,19.2,20.4,22,22.3,22,22.2,22.8,21.6,18.1,19
1933,18.5,19.2,19.4,21.8,22.2,22.3,22,21.8,21.8,21.3,18.3,18.2
1934,18.3,17.8,18.2,21,21.4,22,21.9,22.5,22.3,21.4,19.4,18.9
1935,17.2,17,19.3,21.4,22.4,22.7,22.1,22,22.4,21.3,18.9,18.3
1936,19.1,19.2,20,21,21.8,22.4,22,22.4,22.3,22,19.7,18.5
1937,19.7,19,19.8,21.1,22,22.5,22.2,22.2,21.7,20.9,18.2,18.4
1938,17.5,17.7,19.6,19.7,21.6,22,21.6,21.3,21.8,20.3,18.5,17.7
1939,18.4,18.4,18.8,20.6,21.8,22,22,22.1,21.5,21.3,18,19
1940,16.8,16.6,19.1,20,21.5,22.1,22.4,22.6,22.2,20.7,19.1,18.6
1941,17.4,17.1,18.8,21,21.1,22.7,21.8,22.2,22.5,21.7,18.5,18.9
1942,16.4,17.8,18.8,20,22.5,22.3,21.5,21.4,21.4,20.7,18.7,18.7
1943,17.6,15.7,18.1,19.2,20.9,21.6,21.4,21.4,21.9,20.1,18.1,17.6
1944,16.5,17.6,19.6,20.2,20.6,22.1,22.4,22.5,21.7,20.5,17,18.3
1945,16.2,18.4,19.5,20.5,20.8,21,22,21.3,21.3,20.8,18.6,17.2
1946,18.6,17.7,18.4,21.3,22.4,22.9,20.7,21,21.5,20.8,20.9,19.4
1947,21,18.7,18.7,21.6,21.5,21.9,22.3,22,22.2,21.9,21.4,19.2
1948,18.3,17.2,19.1,20.5,22.5,22.6,22.1,22.7,21.9,21.4,19.9,17.6
1949,18,15.3,19.5,21.5,20.9,21.6,21.9,22,21.9,21.7,16.4,16.6
1950,17,17,18.1,19.2,20.9,22,22,21.3,21.2,21.6,18.9,16.8
1951,17.1,17.1,18.9,21.7,21,23.4,23.1,22.8,23,22,19.2,18.9
1952,17.8,17.2,20.7,20.5,21.2,23.5,22.1,21.7,22.9,20.5,19.6,18.2
1953,17.2,19.1,20.5,22.4,23,23.6,23.1,23.3,23.2,21.4,19.4,19.4
1954,18.6,16.9,20.4,21.4,23.1,22.9,22.7,22.7,22.6,21.4,18.2,16.9
1955,17.6,18.1,19.2,20.7,21.5,22.1,22.7,23,23.4,21.3,20.1,19.1
1956,16,19.1,18.9,20.7,21.9,21.9,22.1,22.5,22,21.4,18.1,18.6
1957,18.3,19,19.8,22,23.1,23.7,22.9,23.1,22.9,21.2,20.4,18.4
1958,17.3,17.5,20.5,22,22.1,22.6,22.8,23.1,23.2,22.3,22,20.6
1959,19.2,20.1,20.4,21.6,22.5,23.1,22.6,22.9,23,22.5,19.7,18.4
1960,18,17.8,19.2,21.3,23.2,21.5,22.2,22.3,23.1,22.8,19.8,17.8
1961,18.1,18.4,20.8,21.5,21.7,21.8,21.7,21.9,22,20.1,19,19.1
1962,17.4,17.6,18.9,21.1,20.6,22,22.1,21,21.5,21.2,18.9,17.4
1963,17.7,18,20.2,19.2,20.6,22.7,22.3,22,22.5,20.4,19.5,17.2
1964,17.7,18.5,20.5,21.7,21.6,21.1,21.3,21.7,21.4,20.1,19.9,18.8
1965,17.3,18.4,18,17.7,21.2,21.4,21.6,21.6,21.8,21.6,18.8,18.5
1966,16.8,17.8,18,20.7,22.2,21.7,21.9,22.4,22,21.3,17.2,16.4
1967,17.1,17,17.8,20.3,21.5,21.8,21.7,22,22.2,21.1,18.5,18.8
1968,17.9,15.7,16.6,19.8,22.4,22.9,22.4,22.4,21.4,21,18.3,18.5
1969,18.3,18.9,19.1,21.8,22.7,22.7,23.2,22.2,23.2,21.9,19.2,18.1
1970,17.3,17.4,19.5,22.3,21.7,23,22,22.8,22,21.1,17.2,17.8
1971,17.7,18,18.4,18.6,22.7,21.2,21.8,21.6,22.7,20.8,19.1,20.3
1972,19.8,17.2,19,20.9,20.9,23,22.1,21.6,21.8,21.3,21.6,18.9
1973,18.8,17,22,22.6,23.4,22.7,22.2,21.9,22.1,21.5,20,17.1
1974,19.4,16.6,20.3,21.1,22.2,22.7,21.6,21.3,21.7,20.2,18.5,18.3
1975,18.3,18,21.1,21.8,21.5,23.2,21.3,22.6,21.5,21.2,19.5,17.6
1976,16.9,16.3,20.6,19.4,21.6,21.7,22.4,21.8,21.8,21.1,19.5,19.3
1977,17.4,18.2,20.7,20.9,21.7,22.5,21.8,22.3,22.1,21.3,19.5,19.2
1978,17.2,16.9,18.3,20.7,22.4,22.6,22.1,22,21.7,21.2,20.2,19.4
1979,18.1,18.1,19.3,21.9,22.5,22.3,22.3,22.2,21.8,21.8,19.3,19.1
1980,18.6,17.8,20.3,20.9,22.5,23.1,22.2,22.3,22.5,21.2,19.3,17.2
1981,15.4,17.9,19.4,21,22.1,22.6,22.6,22.4,21.5,21.5,18.7,18.3
1982,18.4,19.3,19.9,21.2,22.2,23.1,22.1,21.8,21.9,21.6,19.9,19.3
1983,18.3,18.5,18.5,21.8,23.2,23.8,22.6,22.4,23,21.8,20.4,19.6
1984,17.4,18.6,18.9,20.2,22.9,22.8,21.8,22.2,22.1,21.7,18.4,19.3
1985,17.2,18.9,20,21.1,21.9,22.8,22,22.2,21.5,21.6,19.7,19
1986,17.1,18.4,17,19.7,22,23,22,22.1,22.6,21.6,20.7,19.4
1987,16.6,18,19.6,19.6,21.3,23.5,23,22.5,22.6,21,18.9,19.1
1988,19,18.8,19.8,21.1,22.3,23,22.7,23,22.4,21.6,20,18.5
1989,19.6,19.8,18.4,21.3,22.8,23.1,22.8,22.4,22.3,21.2,20.9,17.8
1990,20,19.4,19.3,22,23.5,23.5,23.1,22.7,22.6,21.6,20.7,19.7
1991,19.7,18.4,19.7,22.2,22.9,24,23.4,22.5,22.7,22.2,19.3,20.4
1992,19.5,18.3,20.4,21.9,21.4,24,23,22.5,22,21.8,21,20.5
1993,19.1,19.9,19.9,21.2,22.2,24.9,23.5,22.9,22.6,22.2,20.2,18.2
1994,19.2,20.3,19.4,22.4,22.8,23.3,22.9,23.1,22.4,22.7,20.5,19.9
1995,18.7,17.8,19.4,22.5,23.3,23.1,23.3,24,22.9,22.8,20.6,20.3
1996,17.6,17.8,18.8,22,23.7,23.7,23.4,23.2,23.6,23,20.4,19.8
1997,18.9,20.3,21,23,23.9,24,23.4,22.8,23,22.8,21.9,21.1
1998,19.6,19.2,19.3,22.1,23,24.1,23.2,23.6,24.1,22.6,21,19.2
1999,18,16.8,18.7,21,22.3,22.4,22.3,22.2,22.3,21.7,18.3,18
2000,17.2,17.2,19.6,20.4,22.2,23,22.2,22.1,22.8,21.6,20.1,18.5
2001,17.2,19.8,18.8,21.6,22.1,23.5,22.4,22.6,22.8,22.1,19.5,19.7
2002,18.4,18.2,20.1,20.4,22.6,23.3,22.7,23,23.1,22,20,19.4
2003,16.6,19.8,21.4,20.3,23.1,23.7,22.7,22.5,22.7,22.3,20.6,17
2004,18.8,19.1,19.9,20.9,22.2,23,22.1,22.5,22.3,22.4,19.5,18.3
2005,17.2,17.3,21.1,21.2,22.9,23.5,23.3,22.9,22.5,21.9,19.6,19.7
2006,18.8,17.9,19.5,21.2,22.6,22.5,23.1,23.2,22.5,22.7,19.7,20.6
2007,20,19.1,19.7,21.7,22.7,23.8,23.6,23,22.8,22.4,19.6,19.4
2008,18.4,19.8,19.8,20.7,22.7,23,22.8,23.1,22.7,21.7,18,18.9
2009,18.5,17.8,18.3,21.9,22.6,23.2,23,22.4,22.9,23.1,19.9,20.8
