1901,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1902,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1903,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1904,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1905,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1906,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1907,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1908,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1909,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1910,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1911,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1912,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1913,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1914,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1915,18.6,18.7,18.6,17.6,18.1,17.3,17.2,18.5,17.5,18.3,17.9,18.5
1916,18.8,18.7,18.5,18.3,17.8,17,16.8,17.2,17.4,17.1,17.3,17.6
1917,18,17.7,18.3,17.6,17.1,16,16.4,17.1,16.9,17.1,17.3,17.9
1918,18.4,18.4,17.5,17.1,16.1,15.7,16.3,17.7,17,17.5,17.3,17.9
1919,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1920,18.6,18.7,18.6,17.6,17.1,16.5,16.3,17.3,16.9,17.1,17.4,17.9
1921,18.7,18.4,17.6,16.9,16.4,16,16.3,16.8,16.8,16.3,17.1,17.7
1922,18.4,18.2,17.8,17.4,16.6,15.7,15.8,17.1,16.7,16.6,16.7,17.4
1923,17.8,18.2,18.3,17.3,16.6,16.5,15.6,17,17.1,16.7,17.5,17.6
1924,19.3,18.8,19.4,18,17.3,15.9,15.8,17.4,16.1,16.5,16.9,17.5
1925,17.7,17.6,17.4,17.2,17.1,16.2,16,16.9,16.7,17.4,17.2,18
1926,19,19.2,19.2,18.6,17.8,17,16.3,17.2,16.6,17.1,17.5,17.5
1927,18.2,18.2,18.4,17.1,16.7,16.1,15.4,17.4,16.7,16.8,17.7,18
1928,18.5,18.9,18.3,17.8,17,16.3,16.1,17.1,16.8,17.1,17.3,17.6
1929,18.7,18.9,18.4,17.5,16.8,16.2,15.7,17.3,17,17.2,17.5,18
1930,18.7,18.5,19.2,17.6,16.8,16.3,16.2,17.2,17.1,16.6,17.9,18.5
1931,19.1,19.1,19.4,18.4,17.3,16.4,15.6,17.4,16.6,17.5,17.7,17.6
1932,18.1,18.4,18.2,18.2,16.3,16,15.9,16.9,16.6,16.3,17.4,17.7
1933,18.2,18.3,18.4,17.5,17,16,16.4,17.4,17.7,16.7,16.8,17.3
1934,18.4,18.2,18.1,18.3,17,16.5,15.9,17.8,17.8,16.8,17.4,18.2
1935,18.6,18.2,18.7,18.1,16.7,16.5,16.5,17.1,17.3,17.1,17.3,18.2
1936,18.9,19.8,19.3,18.8,17.5,16.7,16.4,18,17.9,17.4,18,18.3
1937,18.7,18.8,19.3,18.7,17.5,16.5,16.4,17.5,17.1,17.7,18,18.8
1938,18.7,18.8,17.9,17.1,16.7,16.4,16.3,16.7,17.3,17.3,17.5,17.9
1939,18.8,18,18.3,17.6,17.5,16.2,16.8,17.7,17.2,17.4,17.6,18.7
1940,16.3,17.5,17.7,18.3,18.1,17,17.1,18,17.8,18,18.1,15.9
1941,17.2,17.5,18.5,17.2,18.1,16.7,16.5,18.4,18.4,18.4,19.3,19.6
1942,18.9,18.5,17.6,16.6,16.9,16.5,16.7,17.4,18.3,17,16.7,18
1943,18.4,17.8,17.3,17.1,16.4,15.8,16.8,16.6,17.6,17.1,17.8,17
1944,17.2,17.6,17.3,16.4,16.7,15.9,16.3,17.3,17.1,17.4,17,17.7
1945,16.8,16.9,17.8,14.8,15,15.2,15.1,16.6,16.4,16.7,16.9,18.3
1946,18.2,17.7,18,15.9,16.3,15.6,14.9,16.2,16.5,17.1,17.6,17.4
1947,19.5,19.6,20.2,18.4,17.2,15.8,15.3,16.7,17,16.8,18.3,19.3
1948,19.4,18.6,18.9,16.6,16.8,15.7,16,16.9,17.5,17.7,18.3,19.2
1949,19.1,18.5,18.7,17.9,18,16.7,16.4,17.7,17.4,17.4,18.2,19.1
1950,18.6,18,18.3,17.5,16.3,15.7,15.4,16.7,17,16.6,18,18.5
1951,17.6,16.2,17.9,18,17.1,16.5,15.9,17.9,17.8,17.9,17.8,18.6
1952,19,19.6,20.1,17.7,17.4,16.8,17.2,18.2,18.7,18.4,18,18.8
1953,19,19.6,19.3,19.5,17.9,17.6,17.3,18.1,18.5,18.3,19.2,19.3
1954,18.8,19.3,20,17,17.3,15.8,15,16.1,17.5,17.1,17.9,17.7
1955,19.5,19.6,18.3,18,18.3,17.6,16.1,18.4,17.5,17.3,18.9,18.6
1956,16.1,17.4,17.6,18.1,17.1,17.6,16.2,17.6,17.7,17.5,18.5,18.1
1957,19.5,20,20.2,18.9,18.1,17.3,17.4,18.4,18.8,18.2,18.9,19.5
1958,21.1,21.8,23,19,18.5,17.7,16.9,18.3,19.2,19.3,19.3,19.9
1959,20.8,21.1,21.6,19.8,18.3,18.3,17.3,18.2,18.1,18.4,18.7,20.3
1960,21.1,21,20.9,19.6,18.4,18.9,18,18.5,17.9,18.9,19.4,18.6
1961,19.5,20,20.9,19.6,19.4,17.3,17.4,18.6,18.3,18.5,18.1,19.7
1962,19.7,20.3,19.4,18.9,17.7,17.4,17,18.1,18.4,18.6,18.5,18.9
1963,19.4,19.1,19.9,18.4,17.3,17.2,17.2,18.6,18.5,18.8,18.4,20
1964,20.2,20.7,20.1,17.8,17.8,15.9,15.9,17,16.8,17.4,18.1,17.1
1965,17.3,18.6,20.1,17.6,16.6,17.4,16.7,17.8,17.5,18,17.9,18.5
1966,20.2,19.6,19.2,18.4,17.9,16.9,16.6,17.5,17,17.2,17.2,17.5
1967,18,18,17.7,16.5,16.9,15.6,15.6,17.4,16.9,17.9,17.9,18.5
1968,18.3,18.1,18,16.5,16.3,15.4,16.7,17.4,16.8,17.3,17.9,18.5
1969,18.3,18.9,19.1,18.8,18.3,18.4,17.2,18,17.7,17,18.2,18.5
1970,19.6,19.2,19.5,18.5,17.9,17.1,16.1,16.8,15.9,17,16.6,18.2
1971,17.8,16.4,17,17.1,15.9,15.8,16.1,16.9,16,16.5,17.1,17.3
1972,17,17.9,17.8,17.2,16.7,16.2,16.1,16.8,17.5,17.6,18,18
1973,19.8,19.6,19.7,18.5,17.5,15.9,15.5,17,15.9,16.1,17,16.1
1974,16.5,18,16.7,16.2,16.2,16.5,15.9,16.9,15.9,16.5,16.9,17.6
1975,18.7,18.3,18,17.8,16.9,16.6,15.8,16.7,16.6,16.3,16.5,15.9
1976,17.4,16.2,16.3,16.3,16.5,15.3,15.3,16.8,17,16,16.9,17.7
1977,18.7,19.4,19,17.3,16.4,16,16.3,16.9,16.7,17,17.2,18.4
1978,18.7,19.6,18.3,16.7,17.4,15.9,16.4,16.3,16.7,17.3,17.7,17.8
1979,18.3,18.9,17.4,17.4,16.5,15.4,16.2,17.3,16.4,16.7,17.3,17.6
1980,19.1,18.7,19.8,18.6,17.2,16.7,16.4,17.3,17.1,17.2,17.3,17.8
1981,18.5,18.7,19.1,16.7,16.3,16.1,16,16.9,16.2,16.8,17.8,18.4
1982,18.2,17.9,18,16.2,16.4,16.5,16.2,17.6,17.5,17.1,17.6,17.8
1983,19.9,20.6,20.3,18,17.3,17.1,16.7,17.3,17.5,16.8,18.4,17.9
1984,17.4,18.2,18.2,17.8,16.6,16.4,15.5,16.5,15.7,16.8,16.8,16.9
1985,17.7,19,17.9,17.3,16.6,15.9,16.4,16.9,16.9,16.7,16.1,17.4
1986,18.5,17.6,17.7,17.1,17,15.9,16,17.2,16.7,16.5,16.6,18.2
1987,19.2,20.2,19.5,18.8,17.5,17.7,16.6,17.4,17,16.9,17.8,18.8
1988,19.1,18.9,19.2,18,17.9,16.4,16,16.6,15.9,16.6,16.6,16.7
1989,17.4,17.6,16.6,17.1,16.2,16.2,15.6,17,16,17.4,16.7,16.8
1990,17.4,16.5,17.6,17,16.1,16.6,16,17,17.2,16.5,17.5,17.2
1991,18.8,19.5,18.7,18.4,17.8,17.6,15.9,16.6,17.4,17.7,17.9,18.2
1992,19.7,19.6,20.6,19.1,18.3,17.5,15.7,17.5,17.2,17.9,18.2,18
1993,18.9,18.9,19.5,18.9,17.3,17.3,16.7,18.2,17.2,18.1,18.2,19.1
1994,18.8,19.4,18.7,17.8,17.3,17.3,16.2,17.4,17.5,16.7,17.9,18.4
1995,19.5,19.8,19.2,18.4,17.8,17.4,16.8,17.1,17.9,17.5,18.3,18.4
1996,18.8,18,17.7,16.7,16.9,16.6,15.6,16.4,17.5,16.6,15.3,16.7
1997,17.4,17.3,17.6,16.9,17.1,15.6,17.3,18.3,16,16.1,16.6,17
1998,19.4,20.2,18,18.3,17.2,15.5,15.1,16.7,17.5,17,16.6,15.7
1999,16.7,16.4,18.2,18.1,17.6,16.8,16.7,17.5,16.5,17.4,18.3,18
2000,17.8,17.9,17.9,17.9,17.4,16.8,16.4,17.6,16.7,17.8,17.7,18.7
2001,19.1,19,19.4,18.3,18.1,16.9,16.8,17.9,17.5,18.2,18.4,19.6
2002,19.4,19.5,19,17.6,18,16.8,17.2,17.5,17.7,16.7,16,17.4
2003,18,20.8,18.3,17.8,19,15,14.8,17.3,16.5,16.8,15.1,17.6
2004,17.7,17.3,18.1,16.6,17.3,17,16.5,17.1,16,18.1,15.8,15.3
2005,16.2,17.7,18.6,17.6,17.8,15.9,17.6,18.4,17.9,15.3,15.6,15
2006,16.3,19.3,16.3,15.6,15.4,15.5,15.4,17.5,18.2,16,17.6,16.2
2007,16.9,17.4,18.1,17,16.8,15.5,16.8,17,17,14.9,17.5,14.9
2008,18.3,18.4,18.5,17.8,16.7,16.3,16.2,16.9,17,16.5,16.6,16.1
2009,17.9,18,16.5,17.3,17,17,16.5,18,17.9,18,18.3,19.7
