1901,17.8,18.9,18.4,18.9,18,18.1,17.9,17.6,18.3,18.3,19,17.6
1902,19.6,19.3,19.5,19.2,17.4,17.4,16.9,16.9,17.1,17.7,19.4,20.7
1903,21.5,21.1,20.4,20.6,19.6,18.8,18.3,17.7,17.7,18,18.8,18.8
1904,18.9,19,18.9,18.8,17.9,17.2,16.5,15.9,15.4,16.5,17.8,17.9
1905,19.1,19.3,18.7,18.7,17.5,17.3,17.1,16.7,17.9,17.9,18.9,19.2
1906,19.6,20.1,20.4,19.9,17.6,17.1,16.4,16.7,17.3,17.1,17.8,18.4
1907,19.1,19.3,18.7,18.7,17.4,17.3,17.2,16.5,17.9,18,18.9,18.8
1908,19.2,19.3,19.2,19.1,18.2,17.1,16.8,17,16.7,17.6,18.1,18.8
1909,19.3,19.3,19.2,18.9,18.2,17.3,16.8,16.8,16.6,17.5,18.4,18.8
1910,19.2,19.3,19.2,19.1,18.2,17.1,17,16.6,17,17.4,18.1,19
1911,19.3,19.3,19.2,18.9,18.3,17.2,16.8,16.7,16.6,17.2,18.3,19
1912,19.4,19.4,19.1,18.9,18.2,17.1,16.7,16.7,16.8,17.4,18.2,18.7
1913,19.2,19.3,19.3,19,18.2,17.1,16.7,16.5,16.5,17.2,18.3,18.8
1914,19,19.4,19.3,19,18.2,17.1,16.4,16.4,16.6,17.2,18.2,18.9
1915,19.3,19.4,19.4,18.8,18.1,17.2,16.5,16.5,16.7,17.2,18.1,18.8
1916,19.2,19.4,19.1,19,18.4,17.3,16.9,16.9,16.8,17.5,18.2,18.7
1917,19.3,19.3,19.1,19,18.3,17.3,17.1,16.7,16.6,17.2,18.3,18.9
1918,19.1,19.4,18.9,18.8,18.1,17.3,16.5,16.7,16.5,17.2,18,18.6
1919,19.2,19.3,19.3,19.2,18.2,16.9,16.5,16.6,16.8,17.4,18.3,18.7
1920,19.3,19.4,19.3,19.1,18.4,17,16.8,16.7,16.8,17.3,18.1,18.9
1921,19.3,19.5,19.4,18.8,18.4,17,16.9,16.7,16.9,17.5,18.5,18.9
1922,19.3,19.4,19.3,19.2,18.3,17.3,16.8,16.8,16.8,17.4,18.3,18.9
1923,19.4,19.5,19.2,19,18.3,17.1,16.8,16.5,16.5,17.3,17.9,18.6
1924,19.3,19.4,19.1,18.8,18.4,17.2,17,16.8,17,17.5,18.4,18.9
1925,19.2,19.2,19.3,19.2,18.2,17.1,16.7,16.8,16.7,17.2,18.1,18.7
1926,19.1,19.4,19.1,18.8,18.4,17.1,16.8,16.6,16.8,17.4,18.4,18.9
1927,19.4,19.3,19.4,19.2,18.6,17.5,16.9,16.7,16.7,17.6,18.3,18.8
1928,19.3,19.1,19.3,19,18.2,17,16.7,16.7,16.8,17.4,18.4,19
1929,19.3,19.5,19.3,19.1,18.4,17.1,16.7,16.5,16.6,17.4,18.1,18.7
1930,19.3,19.3,19.3,18.9,18.2,16.9,16.7,16.4,16.6,17.3,18.3,19
1931,19.1,19.3,19.1,18.9,18.4,17.1,16.7,16.6,16.8,17.3,17.9,18.6
1932,19.2,19.4,19.1,18.9,18.1,17.1,17,16.6,16.6,17.3,18.1,18.8
1933,19.2,19.2,19,19,18.4,17.2,16.7,16.5,16.7,17.5,18.2,18.7
1934,19.3,19.4,19.3,19.1,18.4,17.3,16.9,16.5,16.6,17.4,18.3,18.7
1935,18.9,18.7,19.1,19,18.2,17.7,17.8,17.5,17.1,18.3,19,18.5
1936,19,19.3,18.8,18.9,18.1,18,17.2,17,17.3,17,17.9,18.4
1937,19,19.4,19.1,19.1,18.1,17.8,18.2,17.7,17.9,18.7,19.4,19.5
1938,19.7,19.7,19.2,18.8,18.3,17.7,17.9,17.7,17.8,19,18.4,19.1
1939,19.9,19,19.5,19,18.5,17.9,17.8,17.8,17.6,17.5,19.2,19.5
1940,20.4,19.9,20.4,20.7,19.4,18.8,17.5,17.9,17.5,18.2,19.9,19.8
1941,19.8,20.3,20.5,19.6,19.3,18.1,17.4,17.6,17.9,18.4,19.4,19.6
1942,20.3,20.6,20.6,19.7,18.7,18.3,17.3,17,17.7,18.3,19.2,19.3
1943,19.7,19.7,19.8,19.2,18.9,17.8,17.6,17.9,17.5,18.3,19.2,19
1944,19,19.4,19.7,19.5,19.2,18.5,17.3,17.1,17.7,17.2,18.5,18.9
1945,20,19.9,20.2,19.3,18.9,18.8,18,18.1,17.8,17.4,20.1,19.7
1946,19.4,19.7,20,19.7,18.3,18.2,17.4,18.3,16.9,17.9,19.1,19.6
1947,20.2,19.9,20.6,20.2,19.4,18.8,18.1,17.6,18,17.7,19.2,19.8
1948,19.8,19.7,19.8,19.2,18.7,18.2,17.6,16.5,16.4,17,17.6,18.3
1949,18.8,18.8,18.9,19.5,18.3,18,17.4,16.4,16.9,17.5,17.4,18.1
1950,18.2,18.3,18.1,18.3,17.1,17.2,17,16.9,16.5,17.1,17.9,17.9
1951,18,18,18.9,18.6,18.4,16.4,17.3,16.7,17.4,17.5,18.5,19.3
1952,19.3,19.1,19.1,19.4,18.2,18.2,16.3,17.1,17.5,17.6,18.9,19.3
1953,18.4,19.4,19.8,19,17.4,16.2,16.3,17.2,17.7,17.8,18.7,18.4
1954,19.1,19,19.2,17.8,17.8,17.2,17.2,16.7,17.3,17.4,17,18.3
1955,18.2,18.2,18.7,18.1,17.4,16.8,17,16.2,16.8,17.4,17.8,18.3
1956,18.8,17.8,17.9,17.9,17.1,16.4,15.7,16.7,16.9,16.9,17.6,19
1957,18.7,18.6,19.2,18.9,17.3,17.2,16.6,16.7,16.6,17.3,19.3,19.4
1958,19.3,19.7,19.2,19.5,18.1,18.1,17.4,16.9,17.9,17.8,19.1,19.3
1959,20.1,20.1,20,19.8,18.9,18.4,18,16.4,17.5,17.2,18.2,19.2
1960,19.8,19.3,19.4,19.3,18.8,16.2,16.2,16.8,17.6,17.2,18.7,19.3
1961,18.4,18.7,19.2,18.3,17.9,17,17,16.4,16.4,17.1,18.2,18.4
1962,18.9,19.2,18.9,18.5,18.4,17.6,17.2,16,16.7,16.8,17.7,18.7
1963,19,19.2,19.5,19.1,18.1,16.4,15.7,16.5,16.3,18.1,18.7,18.6
1964,19.7,19.3,19.4,19.1,17.9,16.9,16.9,16.4,16.2,16.7,17.3,18.1
1965,18.4,18.5,18.8,19.3,17.9,16.8,16.7,16.5,17.4,17.1,18.4,19
1966,19.1,19.3,19.5,19.5,18.5,16.7,16.6,16.8,17.6,17.4,17.9,18.2
1967,18.9,18.4,18.9,18.9,17.8,17.1,16.7,16,15.8,17.1,17.8,18
1968,18.9,18.9,18.2,17.7,16.9,15.4,15.8,15.7,15.9,16.7,18.5,19.2
1969,19.6,18.6,18.8,19.3,18.6,18.2,17.6,17.2,17,17.9,18.4,19.2
1970,19.7,19.2,19.3,19.4,18.4,18.1,16.6,17.4,17.3,17.4,17.9,18.1
1971,18.6,18.3,18,17.7,17.6,16,16.5,16.6,15.8,16.9,17.6,18.1
1972,18.9,19.3,19,18.8,18.4,17.5,17.1,16.8,16,16.8,18.2,19.3
1973,20.1,20.2,20.3,19.7,19.2,17.3,17.1,17.2,16.8,17.3,18.3,18
1974,18.5,18.4,18.3,18.7,17.6,16.6,16.6,15.5,15.5,16.3,17.9,18.5
1975,18.4,19,18.8,18.5,17.8,16.6,16.3,15.8,16.2,16.5,17.6,17.6
1976,17.8,18.4,18.6,18.5,17.6,16.8,16.7,16.1,16,17.4,18.8,19.2
1977,19.5,20.4,20.3,19.4,18.4,16.3,16.9,16.3,16.9,17.8,18.6,18.6
1978,19.6,19.9,19.8,19.3,18.7,17.8,16.5,16.5,17.6,16.9,18.1,19
1979,19.2,19.3,19.6,19.8,18.5,17.7,16.9,16.8,16.7,17.3,18.7,18.9
1980,19.9,19.7,19.9,19.8,19.1,17.8,17.2,16.2,17.1,17.5,18.6,19.7
1981,20,19.6,18.6,19,18.3,17.4,17,16.4,17.2,17.9,18.5,18.9
1982,19.7,19.5,20,19.1,19,17.4,16.5,17.3,16.7,17.4,18,18.7
1983,19.7,21.2,19.9,18.5,18.6,17.3,16.7,16.5,17.3,18.5,18.4,19.2
1984,19.7,20.5,20.3,20.2,18.8,17.5,16.5,17,17.5,17.9,18.3,18.9
1985,19.6,19.3,19.6,19.4,19.1,17.7,17,16.6,18,17.7,18.6,19.3
1986,19.9,19.3,19.4,19.6,18.8,17.4,17.9,17.1,17.4,17.8,19.1,19.2
1987,20.4,20.5,20.5,20.1,19.7,18.4,17.4,16.9,18,17.8,18.6,19.2
1988,19.9,19.9,19.9,19.7,18.7,18.5,17.1,17.7,17.6,17.5,18.6,18.9
1989,19.4,18.6,19.7,19.7,18.8,17.8,17.5,18,17.4,17.8,18,19
1990,19.6,19.7,19.5,19.7,18.9,18.4,18.2,17.5,18.1,18.2,18.4,19.4
1991,19.6,19.4,19.4,19.3,18.7,17.9,16.9,17.2,16.8,17.8,18.4,19.2
1992,19.7,19.6,20.1,19.7,18.8,17.4,17.6,17.5,17.6,17.7,18.6,19.1
1993,20.2,19.7,20.3,19.5,18.1,17.7,18.2,17.7,17.4,18,18.6,19.7
1994,19.9,20.2,20.3,19.8,19.1,18.6,17.1,17.4,17.4,17.9,18,19.3
1995,19.7,19.3,20.2,19.8,19.2,17.6,17.3,17.2,17.4,18.5,19,18.9
1996,19.5,19.4,19.5,19.3,18.4,17.6,17.1,17.3,17.1,17.6,19.4,18.4
1997,19,19,19.2,19.3,19,16.9,16.8,16.5,17.2,17.8,19,19.9
1998,20.9,21,21,19.8,19.2,17.4,17.1,17.5,17.9,18.2,18.9,18.8
1999,19.1,19.4,19.5,19.6,19.1,17.9,17.2,17.2,17.1,17.9,18.1,19.2
2000,19.7,19.5,19.7,19.1,18.1,17.6,17.7,17.1,17.4,18,19.2,19.2
2001,19.7,19.3,20.2,19.9,18.1,18,18.2,17,17.9,17.6,18.6,18.8
2002,20.3,19.9,20.7,20.2,18.4,18.3,17.4,17.4,17.8,19,19.9,20.1
2003,20.5,20.1,20.5,19.8,19.2,18.1,17.5,18.2,18,17.5,19.2,19.9
2004,20.6,20.3,20.2,20.1,19,17.5,16.6,17.4,18.1,18.6,19.5,20.3
2005,20.7,20.5,20.5,20.4,18,17.9,18.1,17.6,18.4,18.4,20,20.5
2006,20,20.2,20.7,20,19.4,18.7,18.1,17.4,18.3,18.5,19.1,20.1
2007,20.7,21.2,20.8,20.3,19.8,18.9,17.7,18.4,18.2,18.4,19.1,18.6
2008,19.5,19.7,19.4,19.2,19.2,18.5,17.3,17.1,17.8,18.2,19.2,20.1
2009,20.7,20.9,20.5,21.1,19.9,19.6,18.9,18.2,18.9,19.1,20.5,19.7
