1901,18.3,19.5,19.9,19.9,19.4,18.8,18.5,18.2,18.4,18.5,18.5,18
1902,18.1,19.1,19.6,19.6,19,18.9,18.8,18.7,18.6,18.5,18.5,17.9
1903,18.6,19.5,20,20.1,19.4,18.9,18.6,18.2,18.3,18.4,18.2,17.8
1904,18,19.4,19.7,20,19.5,19,18.4,18.3,18.3,18.3,18.3,17.8
1905,18.2,19.2,19.6,19.8,19.3,18.9,18.5,18.1,18.3,18.6,18.6,18.1
1906,18.1,19.6,19.8,19.9,19.7,19.2,18.5,18.3,18.5,18.4,18.2,17.4
1907,17.9,19.5,20,20,19.6,19,18.4,18.1,18.3,18.3,18.2,17.2
1908,18.1,19.1,20.1,20.2,20.1,19.1,18.5,18.1,18.7,19.2,18,17.4
1909,17.8,19,19.5,19.4,19.2,18.6,18.5,18.3,18.4,18.3,18.2,17.9
1910,17.9,19.4,19.2,19.9,19.5,19,18.3,18.2,18.1,18.2,18.2,17.6
1911,18.5,19,19.6,19.6,19.1,19,18.6,18.1,18.3,18.4,18.4,17.6
1912,17.8,19,19.2,19.3,19.2,18.9,18.4,18.1,18.2,18.1,18.3,17.4
1913,17.8,19,18.5,19.5,19,18.6,18.6,18.3,18.5,18.2,17.6,17.3
1914,18.7,19.3,19.7,19.4,19.1,19.1,18.4,18.1,18.3,18.4,18.5,17.9
1915,18.4,19.4,19.4,19.4,19,18.6,18.2,17.9,18.2,18.3,18.4,17.2
1916,17,18.8,19,19.7,18.7,18.4,18.1,17.9,17.9,17.7,18.2,17.4
1917,17.9,19.2,19.1,18.8,19.2,18.5,18.4,17.7,17.8,17.3,17.6,17.1
1918,17.3,18.5,18.5,18.5,18.6,18.6,18.6,17.8,18,18.4,18.1,17.5
1919,18.7,19.6,19.5,18.9,19.4,18.8,18.5,18.5,18.4,18.3,18.2,17.4
1920,17.7,18.8,18.9,19.2,19,18.6,18.5,18,18.2,18.1,18,17.1
1921,17.4,18.3,18.4,19.9,19.2,18.8,18.7,18,18.3,18.1,18.1,18.3
1922,17.8,19.2,19.6,19.7,19.2,19.3,18.3,18,18,18.5,19,17.7
1923,18.5,18.6,19.8,18.9,19,18.6,18.3,17.5,17.9,17.6,17.4,17.1
1924,18.4,19.1,20.1,19.9,19,18.9,17.8,18.1,17.9,18.1,17.8,18.2
1925,17,18.2,19.5,19.6,18.9,18.6,18.5,18,18.3,18.4,18.6,18
1926,17.4,18.9,18.8,19.2,19.2,18.9,18.5,18.4,18.7,18.2,17.6,17.1
1927,17.6,18.6,18.8,18.4,18.7,18.9,18.1,18.1,17.6,18.3,17.5,18.1
1928,18.5,19.4,19.9,19.9,19.1,18.6,18.1,18.2,18.2,18.3,17.8,17.4
1929,17.8,19.5,19.1,19.7,18.8,18.3,17.9,17.5,17.7,18.2,18.3,16.9
1930,17.2,19.1,18.8,19.4,19,18.2,17.9,17.4,17.8,17.5,16.8,17.7
1931,17.6,19.5,19.2,19.2,19,18.7,18.1,18,18.3,18.5,18.5,17.9
1932,18.1,19.1,19.3,19.6,18.8,18.6,18.1,17.8,18.4,18.4,18.3,17.7
1933,18.7,20,19.8,19.3,19.2,18.5,18.2,18.1,18.6,18.7,19,18.5
1934,18,19,19.8,19.9,19,18.7,18,18,17.9,18.3,18.1,17.5
1935,17.7,19.3,19.8,19.7,18.9,18.7,17.8,17.5,17.9,18,17.6,17.6
1936,18.2,19.3,19.4,19.5,19.5,18.8,18,17.5,17.8,18.4,17.2,18
1937,18,19.2,19.4,19.7,19.2,18.7,18.4,18.2,18.2,18.4,17.8,17.7
1938,18.3,19.5,19.8,20.2,19.4,18.8,17.9,17.7,18.1,18.5,18.3,18
1939,18,19.2,19.9,20.1,19.4,18.9,18.7,18.2,18.4,18.4,18.3,17.8
1940,18.3,19.6,19.4,20,19.6,19.1,18.4,18.2,18.1,17.9,17.9,17.8
1941,19.2,21.2,20.2,20.7,20,18.8,18,17.8,17.4,18.2,17.7,17.3
1942,18.6,20.9,19.5,19.7,19.9,19,17.7,17.2,17.2,18.8,19.9,18.7
1943,18.7,19,19.9,20.2,19.7,18.5,17.9,17.1,17.7,18.7,19.9,19.8
1944,19.7,19.8,19.1,19.5,19,19.4,18,17.5,17.7,18.3,19.7,18.6
1945,18.7,19.7,21.4,21.4,19,18.1,18.8,17.3,17.6,17.8,18.4,17.4
1946,19.5,20.9,19.9,19.3,19,17.9,17.3,16.3,17.1,17.2,17.7,18.1
1947,18.3,19.7,19.3,18.3,18.9,18.6,17.8,17.3,17.1,18.6,19.7,18
1948,18.4,20.1,19.1,20.2,19.8,18.2,17.8,17.3,17.1,17.5,17.5,16.9
1949,18.4,20.6,20.6,21.6,19.9,18.5,17.5,17.5,16.9,17.8,19.3,18.2
1950,17.6,17.2,19.9,19.5,19.5,18.4,17.4,17,17.1,16.4,17.1,17.4
1951,18.1,18.9,20.4,20.2,19.9,19.1,18.2,17.5,18,18,18.2,17
1952,18.1,19.6,19.8,19.3,19,18.8,17.8,17.7,17.2,17.6,17.8,17.4
1953,17.8,19.3,19.4,19.8,19.5,18.6,17.6,17.6,17,17.7,17.9,17.1
1954,17.4,20.9,20.6,19.8,19.2,18.5,17.7,17.1,17.5,17.3,18.5,17.6
1955,19.4,18.4,18.8,19,18.9,18.4,17.3,17,17.3,19.6,17.1,16.9
1956,16.1,20,19.6,18.6,18.8,18.1,17.4,16.9,16.9,17.3,18.4,17.4
1957,17.6,17.3,19.5,19.4,19.6,18.7,18,17.3,17.4,17.9,18.2,18.5
1958,19.6,19.1,21.1,20.6,20.5,19.1,18.6,17.5,17.8,18.2,18.2,18.8
1959,19.5,19.3,19.6,20.3,19.7,18.6,18,17.4,17.8,18,17.8,17.2
1960,18.3,20.9,20,19.6,19.3,18.9,17.9,17.7,17.7,17.9,18.4,18.8
1961,17.3,19,19.7,20.3,19.9,18.8,18.2,17.7,17.8,18.2,17.1,17.2
1962,16.4,17.5,19.3,19.3,18.8,18.1,17.7,17.4,17.7,17.7,18,17.8
1963,18.2,19,19.2,19,19.4,18.7,18.1,17.5,17.8,18.3,18.7,18
1964,18.7,19.5,20,19.1,19.6,18.5,17.6,17.2,17.4,17.6,17.8,18
1965,17.8,17.4,20.7,19.3,18.9,18.4,17.7,17.4,17.9,17.7,18.2,17.7
1966,19.3,20,19.6,19.1,19.8,18.9,18.1,17.5,17.5,17.6,18.2,17.5
1967,17.9,19.2,19.1,20.4,19.6,17.9,18,17.1,17.6,17.8,17.9,17
1968,16.6,18.6,18.5,18.4,18.7,18.2,18,17.3,17.7,17.8,18.5,18
1969,19.2,19.7,19.6,20.1,18.9,19,17.9,17.3,18,18.1,18,18.3
1970,18.9,20.8,20.5,19.7,19.1,18.7,18,18.3,18.8,19.2,17.6,16.5
1971,16.8,18.3,19.2,19,18.6,17.8,17,17.3,17.1,17.9,18.6,15.8
1972,18.4,18.7,19.4,19.5,19.5,18.5,18.3,18,18.3,18.1,18,17.8
1973,18.5,19.8,20.1,19.2,18.7,18.2,17.9,17.8,17.7,18,18.1,17.4
1974,17.9,20,20,19.5,18.4,18.5,17.8,17.7,17.4,17.8,17.2,17
1975,17.9,19.6,19.7,19.8,19,18.7,18,17.6,17.5,17.8,17.4,17.3
1976,17.5,18.9,19.5,19.3,18.7,18.2,17.8,17.6,18,18,18.2,18.5
1977,19.1,19.1,19.6,19.8,19.2,18.3,18.1,18,18.5,18.1,18.6,19.5
1978,18.5,20.1,17.9,20.6,19.8,18.9,18.2,18.1,18,18.4,18.7,18.1
1979,19.3,19.4,19,19.8,19.2,18.6,18.3,18.4,17.7,18,18.3,18
1980,18.9,21.2,20.5,20.9,19.6,19.2,19.1,17.8,18.5,18,18.3,17.4
1981,18.7,19,20.9,21.1,20.2,19.5,18.7,19,18.9,18.7,18.5,18.6
1982,20.4,18.6,20.7,21.2,20.1,19.7,19.2,18.9,19.4,19,18.9,19.1
1983,17.6,20,21.2,21.1,20.9,20.4,19.4,19.4,18.9,19,19.4,17.4
1984,16.8,19.3,21,20.3,20.2,19.4,18.7,18.6,18.6,18.3,18.8,19
1985,20.9,18,19.8,19.1,19.6,18.9,18,18.6,19.1,19,19.4,18.6
1986,17.8,20.3,19.6,20.5,20.3,18.9,18.7,18.9,19,19.2,19.5,18
1987,18.4,20.5,20.6,21.1,19.7,20.2,19.7,19.8,19.4,19.5,19.6,19.3
1988,19,20.7,20.9,20.6,19.5,19.5,18.4,19,18.6,18.7,18.9,17.3
1989,14.9,17.9,19.4,19.1,19.2,18.1,19.2,19.6,19.7,19.3,18.7,18.3
1990,18.9,20.3,20.1,21,20.3,20.5,19.1,19.1,19.2,19.1,19.2,19.6
1991,17.5,20.3,19.8,19.8,19,19.6,18.5,17.7,18.7,18.9,18.5,16.6
1992,18,19.4,20,20.8,19.1,19.2,18.5,17.7,18.4,18.7,18.3,18.1
1993,17.4,18.4,19.4,20,18.6,19.8,19.4,20.2,18.2,17.4,21.4,18
1994,17.2,19.3,20.2,20,19.6,18.9,18.3,18.2,18.2,18.8,18.1,17.2
1995,17.7,19.5,19.5,22,19.7,20.2,18.8,20.2,19.3,19.2,20.2,18.3
1996,19.3,19.4,19.4,20.2,19.6,19.1,19,18.2,18.9,19.4,18.6,17.9
1997,19,19.6,21.8,20.2,20.4,19.4,19.3,18.8,20.6,20,20,19.1
1998,18.8,19.9,20.9,20.6,19.8,19.4,19,18.2,18.9,18.9,18.7,17.5
1999,18.9,20.6,20.1,20.1,18.7,19.1,18.4,18.4,18.1,18.7,18.7,18.2
2000,18.5,20.4,20.2,21.1,21.6,19.8,19.3,20.2,18,19,20.3,18.7
2001,20,22.9,22,22.6,22,20.1,20.2,20.3,20.1,20.6,20.2,18.4
2002,20,22.7,21.8,22.6,22.1,21.4,21.6,20.8,20.7,18.8,21.3,20.1
2003,22.1,21,22.6,22.8,22.1,20.4,20.1,19,21.2,20.5,21,21.2
2004,22.3,21.4,21.3,20.7,21.4,20.8,20.1,19.9,19,19.3,19.3,18.5
2005,16.9,21.7,23.1,22.6,20.2,20.7,19,19.3,20.2,19.1,21.6,20.6
2006,20.3,22.2,22.3,22.5,18.5,19.2,20.4,20.2,18.6,20.5,21.5,19.4
2007,21.1,23,22.6,22.7,22,18.7,18.4,18.8,19,18.5,17.1,20.6
2008,21.8,23.6,22.8,21.5,21.3,20.4,20,20.4,20.8,19.3,21.2,17.7
2009,21.1,22.6,22.4,21.3,21.4,19.9,21.4,20.9,20.7,20.3,21.7,21.5
