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