1901,18.8,20.2,23,23,23.4,21.6,20.1,19.7,20.6,22,21.3,19.4
1902,19.8,20.4,23.7,24.5,24.6,22.2,20.4,20.7,20.5,21.2,21.7,19.8
1903,19.4,20,20.7,22.9,22.8,20.8,19.8,19.3,19.3,20.2,20.1,18.9
1904,19.2,22.1,24.1,24.1,22.8,21.6,19.2,19.6,19.8,20,19.4,19.5
1905,18.8,17.9,21.9,22.9,24.3,21.8,20.4,21,19.9,20.4,20.2,17.8
1906,19.5,19.4,22.1,23,23.4,22.5,20,19.4,19.9,20,19.8,19.7
1907,21.1,21.1,23.8,23.1,22.5,21.8,19.9,20.3,20.8,20.6,18.6,19.4
1908,19.7,20.6,23.2,23,23.9,22.5,20,20.3,19.9,20.5,19.9,19.4
1909,20.3,21.5,23.7,23.2,23.7,22.3,20.3,19.4,19.1,20.3,21.3,17.7
1910,19.2,19.7,22,22.7,23.1,21.7,20.2,20.2,19.3,19.9,20.4,19
1911,20.3,20.7,21.9,22.3,21.6,21.6,19.6,20.8,20.7,20.1,18.2,18
1912,18.8,19.7,20.8,22.8,23.5,20.1,19.8,20.5,20.2,20,18.7,17.7
1913,18.7,19.6,21.2,21.8,22.8,20,19.6,20.4,19,19.8,19.9,18.3
1914,20.2,19.8,20.8,22.2,22.5,20.4,19.5,19.5,19.5,20.6,19.2,17
1915,18.3,20.3,20.6,22.2,23.8,22.3,20.3,20.4,19.4,20.4,19.9,19.4
1916,20.5,21.4,23.4,23.1,23.3,22.1,19,18.8,18.8,19.4,18.6,18.3
1917,18.1,19.4,20.9,21.4,22.9,19.2,19,19.2,18.6,18.8,19.8,17.1
1918,17.6,19.7,19.1,22,22.4,19.7,19,18.9,18.5,20,19.5,18.1
1919,15.8,19.5,20.4,21,22.7,21.2,19.3,19.9,18.9,19.9,19.3,17.9
1920,16.7,19.9,21.9,23.3,21,19.9,19.8,19.5,18.9,19.6,19.2,17.6
1921,17,18.2,20.8,22,21.7,21.1,19.2,19.4,18.9,18.5,18.7,17.7
1922,18,19.9,21.3,23,22.9,20.1,19.6,19.9,18.9,19.3,19.3,17.9
1923,17.9,18.6,21.3,22.3,23.9,21.2,19.4,19.8,19.7,19.1,18.8,18.1
1924,17.4,19.2,22.5,22.8,21.7,20.5,19.5,19.8,18.5,19.1,18.1,17.7
1925,16.8,18.5,20.1,21.7,20.8,19.9,19.3,19.7,18.6,20,18.5,16.3
1926,17.1,19.5,22,21.3,22,19.9,18.9,18.9,18.7,19.5,19.3,19.3
1927,18,18.9,21.6,23,24.4,19.7,19.4,19.5,19.2,18.8,18.5,17.9
1928,17.2,20.2,21.8,22.7,23,22.6,20.1,19.8,19.2,19.9,18.2,18.4
1929,18.5,21.3,22.2,25.4,22.9,21,18.5,18.7,18.8,18.6,19.2,16.1
1930,16.9,18.9,21.3,21.6,22.3,20.4,19.4,20.9,19.7,20,19,18.7
1931,16.9,19.3,21.4,21.8,21.4,22.4,19.9,19.6,18.6,20.6,19.6,18.3
1932,18.7,20.3,21.2,22.5,23,22.5,20,19.9,19.2,19.4,17.8,17.9
1933,15.6,19.2,20.8,23.9,25.3,21.7,21,18.5,18.8,18.7,17.9,17
1934,16.7,18.1,20.9,20.3,20.5,21.8,19.6,18.9,18.9,19,19.3,18.7
1935,18,18.5,20.9,22.4,22.2,20,18.6,18.6,18.8,18.3,20.3,18.3
1936,19,20.8,21.7,21.7,21.9,22,19.5,19.2,18.4,19.5,20.6,19.1
1937,21,20.7,20.7,21.4,20.7,19.8,18.8,19,19.1,19.2,19.5,18
1938,19.3,18.3,20.6,21.6,21.5,19.6,18.6,19.3,18.2,19.5,19.6,18.6
1939,18.1,20.2,20.5,21.1,21.5,19.8,19.1,19.3,18.5,19.1,18,17.8
1940,16.8,20.1,20.1,23,21.1,21,18.8,19.7,19.8,20.6,19.1,17.9
1941,16.8,19.4,20.7,22,21.8,20,18.9,19.9,18.4,19.7,18.5,17.8
1942,17.8,20.1,21.2,23,23.5,21.2,19.5,18.6,19.2,20.5,18.3,19
1943,18.8,19.7,23,23.7,22.8,19.5,21,20,20,19.4,17.9,18
1944,17.9,20.5,20.7,23.8,21.7,21.1,20.3,18.9,18.2,18.4,19.9,18
1945,19,20.7,22.5,23.6,22.2,22.9,20.2,19.5,19.7,19,20,19.1
1946,18.1,19.3,23,23,24.4,21.2,21.8,19.9,20.7,20,19.8,18.6
1947,19,20.9,22.7,22.9,21.1,22.6,21.4,19.4,19.3,19.8,19.3,17.8
1948,16.7,20.5,23.3,22.3,23.2,22.4,19.4,20.4,19.5,19.7,19.9,20.1
1949,18.9,20.4,22.5,23.8,22.4,21.2,20.2,21,18.9,20.6,18.8,18.9
1950,18.5,18.9,20.9,22.3,23.5,21,18.8,21,19.7,19.4,19.4,18.7
1951,19.9,20.4,21.3,24.2,22,21.7,19.7,20.3,19.4,20.6,21.7,21
1952,21.5,21.5,24,22.4,22.1,19.3,19.7,20.3,18.5,19.4,20.2,19.5
1953,19.9,21.9,23.2,24.9,24.9,22.7,21.1,20.6,19.2,20,18.6,18.7
1954,19.7,19.8,24,22.2,21.6,20.8,19.6,20.6,19,19.4,19.6,19.1
1955,20.1,20.5,21.6,25.2,24.5,24,19.4,20.8,18.8,18.8,20,17.7
1956,15.4,20.6,24.2,24.7,20.8,19.2,19.2,20.6,18.7,20.8,19.4,18.6
1957,21,22.4,22.5,24.1,23.7,21.6,21.4,20.9,19.4,21.7,19.7,19.7
1958,15.5,19,23.7,24.6,21.2,21,19.3,20.6,19.2,20.2,18.8,16.4
1959,17.5,21.5,22.7,21.3,21.8,20.2,19,20.1,19.7,19.8,19.8,19.6
1960,19.7,20.1,23.5,23.8,23.6,24.3,20.4,20.8,19,21.7,20.6,18.9
1961,19.4,21.3,21.5,24.9,24.4,19.7,19.2,20.6,18.9,21.1,19.5,19.7
1962,19.4,22.8,23.4,21.2,22.9,22.8,21.1,20.7,18.9,20.8,20.3,17.3
1963,19.5,20.4,23.4,25.1,22.3,21.9,19.6,20.3,18.8,18.5,20,18.7
1964,17.5,23,22.9,25,22.9,20.3,19.8,21.5,19.6,19.5,19.1,18.4
1965,18.7,19.3,24.2,23.7,23.6,22,19.5,18.4,20.8,19,21.1,19.2
1966,18.2,19.6,20.4,22.4,23.8,22.5,20.3,20,20,19.6,19.4,18.5
1967,17.2,20.6,22.8,23.9,23,21.7,20.5,19.1,18.3,19.5,19.9,20.5
1968,20,20.4,22.5,22.6,23.2,21,19.5,19.9,19.4,20.9,20.7,18.5
1969,20.3,23.2,22.6,25.3,25.7,25,21.3,20.1,18.9,21.5,20.7,20.8
1970,20.3,20.2,23.5,27.2,23.9,21.4,20.4,20.7,19.6,22.2,19.7,20.9
1971,20.3,21.4,22.2,22.6,23,20.4,19.6,19.8,19.2,20.7,19.1,18.9
1972,18.9,20.5,21.9,24.7,23,21,19.2,20,20.1,21.1,20.4,18.5
1973,20.6,21.1,24.4,23.7,23.4,21.1,19.9,19.6,20.3,19.4,20.4,17
1974,18.3,19.9,21.6,21.8,23.7,19.7,18.9,20.6,19.8,19.2,18.4,18.8
1975,16.3,20.3,23.2,25.1,22.2,19.7,19,19.4,18.4,19.8,20.4,18.1
1976,17.4,19.1,23.4,21.9,22.3,21.7,18.9,19,19.9,19.5,17.7,18.5
1977,19.7,19.7,23.8,21.1,22.7,21.1,20.2,20.8,20.9,20.8,19.5,18.8
1978,19.3,17.7,20.8,24.1,24.3,20.5,20.1,20.7,19.4,18.2,20,19.3
1979,19.2,18.8,22.3,23.5,23.2,21.9,20.7,19.4,18.4,22,19.4,18.2
1980,18,19.9,23.8,21.7,22.5,22.4,20.7,19.8,19.5,20.9,19.8,18.7
1981,16.7,19,21.4,21.9,22.1,19.7,19.7,19.8,20.1,20.6,20.2,19
1982,19.9,20.1,22.8,24.9,22,24.9,20.7,21.2,21.5,20.5,21.1,19
1983,16.9,18.7,22,25.5,25.7,23,19.8,20.8,19.5,20.6,20.4,19.9
1984,18.8,19.6,22.9,25.7,21.4,20.8,19,19.9,17.8,21.6,20.1,19.9
1985,18.9,20.9,21.4,20.2,23,20.5,19.9,20.7,20.9,21,21.2,18.4
1986,17.4,19.1,21.5,22.3,21.4,19.5,19.7,20.5,21.2,20.4,20.2,19.1
1987,20.1,19.8,21,22.1,22.9,21.8,20.4,21.6,22.3,21,20.8,20.8
1988,18.9,20.8,20.5,23.6,24.3,21.5,20.1,20.7,20.8,20.8,22.8,19.2
1989,19.8,20.4,21.3,22.2,23.7,21.9,20.6,20.3,18.3,21,21.7,18.5
1990,19.1,19.5,21.4,22.2,23,21.6,19.9,20.9,20.4,20.3,21.5,20.7
1991,19.7,20.1,25.1,23.7,24,21.8,20.8,21.3,18.3,19,18.7,18.5
1992,16.9,17.2,23.2,21.7,20.9,22.4,20.1,19.9,19.6,19.8,18.4,19.8
1993,18.8,21.4,21.6,23.3,22.7,21.2,19.7,20.3,19.4,20.6,19.1,20.4
1994,19.2,20.8,23.5,22,23,21.1,21.7,19.4,20.1,20.2,21.2,20.6
1995,19.5,20.4,22.4,23.7,23.6,22.9,20.5,19.9,21.1,21.1,19.9,19
1996,20.2,21.4,21.8,22.8,24.7,20.5,21.5,20.3,21.5,21.2,20.6,19.5
1997,18,21.2,21.4,20.9,21,22.5,21.2,22.4,20.8,21.7,21.4,19.3
1998,19.5,21.7,24.2,26.7,25.6,25.1,22.1,21.5,19.4,19.8,21.6,20.5
1999,19.8,21.8,22.7,25.9,24.5,23.4,20.1,21.7,19.8,20.2,19.6,18
2000,19.6,21.6,23.4,25.3,23.4,21.4,21.1,20.9,20.6,21.5,20.8,18.8
2001,19.8,21.3,22.3,24.7,23.4,22,21.4,20.5,19.7,20.7,19.5,18.8
2002,20.2,20.5,24.2,25.8,24.9,22.9,20.7,20.9,20,21.3,20,18.5
2003,19.2,21.3,23.5,25.1,26.2,22.5,21.1,21.8,20.2,21.1,21.2,18.6
2004,18.7,21.4,23.9,24.3,23.2,21.5,20.4,21.2,20.3,22.7,21.5,19.9
2005,20.4,20.8,23.4,26.1,24.5,23.7,22.1,20.6,21.2,21.5,21.7,19.6
2006,20.9,22.8,24.6,25.6,24.1,22.1,21.1,21,21.1,22,20.7,19.2
2007,20.2,20.4,23.1,25.2,23.9,22.4,21.2,21.4,20.2,20.2,20.8,19.9
2008,19.7,23,23.1,25.2,24.5,21.9,20.8,21.2,19.9,20.8,20.2,18.6
2009,20.6,22.4,23.5,25.2,24.4,23.7,22.2,22.1,20.7,22.6,20.2,18.6
