1901,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1902,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1903,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1904,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1905,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1906,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1907,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1908,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1909,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1910,19,18.7,18.5,18.4,18.3,17.8,17.8,18.2,18.6,18.8,19.2,19.2
1911,19,18.6,18.4,18.4,18.4,18,17.9,18.4,18.7,18.9,19.4,19.5
1912,19.1,18.9,18.7,18.7,18.4,17.8,17.9,18.3,18.8,19,19.3,19.4
1913,19.1,18.7,18.6,18.5,18.4,17.9,18,18.4,18.8,19.2,19.6,19.5
1914,19.1,18.8,18.5,18.5,18.4,17.9,17.9,18.4,18.8,19,19.4,19.5
1915,19.1,18.9,18.6,18.6,18.7,18.1,18.1,18.5,18.8,19.1,19.4,19.4
1916,19,18.7,18.5,18.6,18.5,18,18,18.4,18.9,19,19.4,19.3
1917,18.9,18.6,18.4,18.4,18.4,17.9,18,18.3,18.7,18.9,19.3,19.3
1918,18.9,18.6,18.5,18.4,18.4,18,18.2,18.4,18.8,19.1,19.4,19.4
1919,19.1,18.8,18.5,18.6,18.6,17.8,17.8,18.3,18.7,18.9,19.3,19.3
1920,19,18.7,18.5,18.4,18.3,17.8,17.7,18.3,18.7,18.9,19.3,19.2
1921,19,18.6,18.4,18.4,18.4,17.9,17.8,18.3,18.7,18.9,19.3,19.4
1922,19,18.7,18.5,18.5,18.5,18,18,18.4,18.8,19,19.4,19.4
1923,18.8,18.7,18.5,18.4,18.2,18.1,17.6,18.3,18.9,18.9,19.4,19.2
1924,19.4,18.7,18.7,18.6,18.6,17.9,17.9,18.4,18.5,18.8,19.2,19.3
1925,18.7,18.3,18.1,18.4,18.5,17.8,17.9,18.3,18.8,19.1,19.3,19.4
1926,19.1,18.8,18.7,18.8,18.7,18.2,18,18.4,18.8,19,19.5,19.2
1927,18.8,18.6,18.5,18.5,18.5,18,17.8,18.5,18.8,18.9,19.5,19.6
1928,19,18.8,18.4,18.6,18.5,18,17.9,18.4,18.8,19,19.4,19.3
1929,19.1,18.8,18.4,18.6,18.4,17.9,17.7,18.4,18.9,19,19.5,19.5
1930,19.2,18.7,18.9,18.6,18.4,18,18.1,18.4,19,18.8,19.6,19.7
1931,19.3,18.8,18.8,18.9,18.5,18,17.7,18.4,18.7,19.3,19.6,19.2
1932,18.7,18.5,18.3,18.8,18.2,17.7,17.9,18.2,18.7,18.6,19.3,19.3
1933,18.8,18.6,18.2,18.4,18.4,17.8,18,18.5,19.2,19,19.1,19.1
1934,18.9,18.5,18.3,18.8,18.5,17.9,17.9,18.8,19,18.9,19.4,19.5
1935,19,18.4,18.6,18.6,18.5,18.1,18.3,18.4,19.1,19,19.5,19.5
1936,19,19.2,18.7,19,18.7,18.2,18.1,18.6,19.3,19.2,19.6,19.7
1937,19.1,18.7,18.5,18.8,18.8,18,18,18.4,18.9,19.3,19.5,19.6
1938,19.1,18.7,18.5,18.4,18.5,18.1,18.2,18.3,19.1,19.2,19.6,19.6
1939,19.3,18.6,18.4,18.6,18.7,18,18.3,18.4,18.8,19.2,19.4,19.4
1940,19.3,18.9,19.1,18.5,18.8,18.2,18.2,18.4,19.1,19.2,19.7,19.7
1941,19.5,19.3,18.9,19,18.8,18,18.4,18.6,19.2,19.6,20.2,20.2
1942,19.3,18.9,18.6,18.7,18.6,17.9,18.2,18.4,19.1,19,19.7,19.4
1943,21,18.6,20.9,20.2,18.3,17.9,18.8,18.5,19.5,20.5,19.8,21.1
1944,20.6,20.2,19.4,19.9,19.6,18.7,20.7,20.1,20.8,20.4,20.5,20.6
1945,20.6,20.1,19.8,18.5,18.3,18.5,18.6,19.5,20.8,20.2,21,20.2
1946,19.1,19.7,19.6,19.6,19,19.2,18.5,19.3,19.9,20.1,20.4,19.7
1947,19.2,18.8,18.8,18.6,18.5,17.9,17.8,18.3,19,18.9,19.6,19.7
1948,19.4,19.4,18.6,18.2,19.6,18.5,17.9,18.8,19.7,19.1,20,19.7
1949,18.9,19.2,19.3,19.1,18.7,17.6,17.2,18.1,18.2,18.3,19.3,18.7
1950,19.2,18.4,18.3,18.2,17.6,17.1,17.4,18.4,19.3,18.7,19.4,19.3
1951,17.9,18.2,18.2,17.9,18.6,18.8,18.6,18.7,19,19.5,19.8,19.4
1952,18.7,18.6,18.5,18.2,18.7,17.5,17.5,18.1,18.4,18.7,19.5,19.2
1953,18.9,18.2,17.6,18.1,18.9,18.2,17.7,18.7,18.7,18.2,19.8,18.5
1954,19.2,18.3,18.3,18.6,17.9,17.4,17.4,18.2,18.7,18.4,19.3,19
1955,18.2,18.6,17.7,17.8,18.1,17.2,17.1,17.5,18.2,18.3,19,18.7
1956,18.3,18.6,18,18.1,17.8,17.2,17.6,18.1,18.3,18.2,18.8,18.7
1957,18.6,18.1,17.9,18.1,19.4,19.3,19.1,19.5,19.6,20,20.9,20.3
1958,19.4,18.8,18.4,18.5,18.6,17.9,18,18.2,18.8,19,19.6,19.3
1959,19.2,19.1,18.1,18.7,18.8,16.8,17.8,18.2,19.3,18.7,19.4,18.8
1960,18.3,18,17.8,18.4,18.3,17.2,17.6,18.2,18.9,18.9,19.5,19.4
1961,18.3,17.9,18.3,18,19.7,18,17.7,18.7,19.4,19.1,19.1,19.7
1962,18.9,18.9,17.8,18.1,18.1,16.7,18.7,18.7,19.8,19.8,19.9,19.5
1963,18.6,17.5,17.6,17.9,19,19,18.1,19.2,19.7,20.1,19.7,20.5
1964,20.5,19.3,18.4,17.7,18.7,16.9,17.4,17.6,18.1,18.6,19.2,18.3
1965,18.2,19,18.1,17.5,17.9,17.8,18,18,18.9,19.5,18.7,19.6
1966,19.7,19.6,18.4,18.4,18.3,17.3,17.7,17.9,18.4,18.3,18.3,17.8
1967,18.1,17.3,17.7,18.8,17.8,16.1,16.9,17.8,17.7,18.7,18.6,19
1968,18.3,17.7,18.1,18.8,17.4,17,16.9,18.6,17.8,18.3,19.3,19.4
1969,18.6,19.1,19,18.5,18.8,17.9,18.4,17.9,18.5,18.4,19.4,19
1970,18.6,17.9,19.1,19.3,17.7,17.7,17.7,17,17.8,18.6,18.4,18.8
1971,18.3,17.5,16.9,17.9,17,17.2,17.1,16.9,17.7,17.8,18.2,19.1
1972,18.4,18.1,17.8,18.1,18.3,18.9,19.5,18.6,19.1,19.3,19.7,19.6
1973,19.2,18.9,18.6,18.4,18.2,17.2,16.8,17.2,17,17.9,18.2,17.6
1974,18.2,17.6,17.9,18.3,18,17.2,17.1,16.9,17,17.4,18.5,18.5
1975,17.5,17.3,17.8,18.2,17.1,17.2,15.7,16.8,17,17.5,17.3,17
1976,17.1,16.8,16.8,17.4,18,18.2,18.8,18.8,18.6,18.1,19,19.1
1977,18.8,18.4,18.8,18.1,18.1,17.7,18.3,18.5,18.6,19.5,20.3,20.3
1978,19.5,20,17.8,17.1,18.3,17.7,17.7,18.1,18.9,18.9,20.2,19
1979,18.8,18.9,18.5,18.7,18.7,18.1,18.6,18.1,18.3,19.2,18.8,18.9
1980,18.6,17.2,18.8,19,18.5,18.2,18,18.1,18.3,18.3,18.6,18.3
1981,19.1,19.3,19.3,19,19,18.3,18.2,18.5,19.5,19.6,19.5,20.4
1982,18.4,18.7,19.1,18.8,18.4,19.2,18.4,19.3,19.7,19.2,20.5,20.4
1983,20.6,20.5,19.9,19.6,19.7,19.8,19.6,19.3,19.8,19.4,20.7,19.4
1984,18.4,18.2,18.8,18.7,18.1,18.1,17.4,18.7,18.6,19.4,19.1,20.4
1985,17.9,19.4,19.1,19.3,18.8,18.8,17.7,18,19,19,18.8,19.2
1986,19.5,17.8,19,18.9,19.2,18.2,18.4,19.1,19.3,18.9,19.7,20.7
1987,20.9,20.7,19.7,19.8,19.2,20,19.3,19.5,20.6,19.5,20.9,21.4
1988,20.1,19.4,20,18.8,19.3,18.3,17.7,18.6,18.8,18.9,19.3,18.4
1989,18.5,18,19.2,19.5,18.2,17.9,17.5,18.8,19,19.6,20.1,19.3
1990,20.1,18.8,19.2,19,18.8,18.9,18.5,18.6,19.9,19.3,20.6,20.1
1991,19.1,19.3,18.9,19.4,18.9,19,18,17.4,18.7,19.9,20,19.7
1992,19.7,18.9,18.6,19,18.6,19,17,18.1,18.8,19.5,19.5,19.1
1993,18.6,17.8,18.1,18.2,18.5,19,18.7,18.8,18.9,19.5,19.4,19.8
1994,18.5,18.6,18.4,18.2,18.4,18.4,18.3,17.9,19.1,19.3,19.8,19.7
1995,19.6,18.9,18.5,17.8,18.8,18.8,18.9,19.2,19.3,19.4,19.7,19
1996,18,18.1,18.5,18.4,18.6,18.1,17.7,18.5,19.3,18.4,19.5,19.5
1997,17.7,18.8,18.4,18.8,19,18.9,18.9,19.1,19.8,19.5,19.7,20.7
1998,20.5,20.3,19.2,19.8,19.6,18.8,18.6,19.2,19.5,19.9,19.8,19.6
1999,18.7,18,18.7,18.3,18.2,18.5,17.8,18.5,18.6,18.8,19.6,18.5
2000,17.9,16.9,16.6,16.9,18.5,18.5,18.7,18.9,18.8,19.7,20.2,19.7
2001,19.7,19.6,17.7,18.2,17.3,16.5,17.3,18.1,17.8,18.4,18.9,18.8
2002,18.5,18.7,18.6,18.8,19,17.1,17.5,17.9,18.5,18.6,19.7,19.3
2003,19.2,18.7,18.3,17.8,18.1,17.1,17.5,18.1,18.4,18.9,19.1,19.1
2004,17.9,18.3,18,17.8,17.4,16.5,17.1,17.5,18.2,19.8,19.1,20.1
2005,18.7,17.9,16.9,18.2,17.7,16.8,17.6,17.8,17.9,17.5,17.9,17.8
2006,18.4,17.9,17.5,17.4,17.5,17.9,17.5,18.2,18.8,18.8,19.4,19.2
2007,19.4,18.8,17.6,18.1,17.4,16.2,17.2,16.9,17.6,17,18.2,17.8
2008,18.1,17.9,17.7,17.7,17.2,17,17.7,18.1,18.6,18.5,18.6,18.4
2009,18.4,18.5,17.1,19.5,19,19.2,19.4,19.6,20,20.2,20.3,20.1
