1901,17.9,19.9,20.9,21.4,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1902,18.2,19.5,21.1,21.4,21.2,20.7,20.4,20.6,20.2,20.4,19.5,18.1
1903,18.4,20.1,21.4,21.5,21.1,20.4,20.4,20.5,20.2,20.4,19.5,18.1
1904,18.2,19.7,21,21.3,21,20.6,20.4,20.1,20.2,20.4,19.5,18.1
1905,18,19.4,21.2,21.7,21.4,20.3,20.4,20.4,20.2,20.3,19.9,18.4
1906,17.8,19.9,21.7,22.6,21.2,20.8,20.3,20.3,20.6,20.6,19.7,18.5
1907,18,19.5,21.2,21.5,21.6,20.6,20.5,20.7,20.3,20.9,19.5,17.7
1908,17.9,19.5,21.2,21.7,21.6,20.4,20.6,19.7,20.3,20.3,19.3,17.9
1909,18.2,20.3,22.1,21.8,21.1,20.7,20.1,20.5,20.2,20,19.6,18.1
1910,17.6,19.8,20.8,21.1,21.1,21.5,20.6,20.4,20.4,20.4,19.5,18.1
1911,17.8,19.7,21.6,21.7,21.3,20.8,20.4,20.5,20.2,20.4,19.7,17.9
1912,18.4,20.2,21.7,22.3,21.6,21.3,20.7,20.9,20.5,20.4,19.4,18.1
1913,18.2,19.7,20.6,21.3,21.3,20.9,20.9,21,20.8,20.4,19.5,18.1
1914,19.1,19.9,21.4,21.7,21.7,21.1,20.9,20.6,20.5,20.7,20.2,18.2
1915,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1916,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1917,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1918,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1919,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1920,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1921,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1922,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1923,19.3,19.8,21,20.8,21.4,20.8,20.1,19.7,20.2,20.7,20.1,18.8
1924,18.6,21.5,21.3,21.4,21.5,20.7,19.7,19.7,19.2,20.4,19.4,17.8
1925,16.3,19,21.1,21.3,21,20.3,20.3,19.8,20.1,19.9,20.1,18.3
1926,18.8,19.9,21.2,21.2,20.9,20.5,20.7,21.1,21.2,21.3,20.5,18.9
1927,18.5,20.5,20.7,21.3,21.8,20.9,20.4,19.9,21.1,20.7,20,19
1928,18.6,18.9,20.9,20.7,20.8,20.2,20.5,19.5,20.4,20.5,19.8,17.8
1929,17.5,20.1,20.5,20.4,21.4,19.8,19.5,19.2,19.5,20.2,19.7,16.8
1930,17.7,20.6,21.4,21.7,21.3,20.6,20.3,20.6,20.6,21.1,20.3,19.9
1931,18.7,21.2,21.1,22.9,21.8,20.9,20.5,20.5,20,21.4,20.8,19.7
1932,18.2,20.8,22.8,22.5,21.6,20.9,20.3,20.7,20.4,21.2,20.5,18.7
1933,18.9,20.6,22,21.9,21,20.2,20.2,20.2,20.2,20.3,20.8,18.9
1934,18.3,19.9,21.4,21.6,21.4,20.9,20.6,20.2,20.8,21.5,21.1,18.7
1935,19.4,20.9,22.9,22,21.9,20.4,20.6,20.2,20.3,20,20.6,19.1
1936,18,21,23,21.1,21.3,20.5,19.7,19.4,19.7,20.6,20.6,18.1
1937,18.1,20.2,22,21.7,21.2,21.1,20.3,20.5,20.5,21.6,20.4,19
1938,18.7,20.6,21.7,22.6,22.4,21.7,20.8,20.2,20.3,21,21.2,17.8
1939,19.1,21.1,22.4,21,21.4,20.7,20.7,20.6,20.2,21.2,20.3,19.5
1940,18.2,20,21.4,21.6,21.2,20.7,20.4,20.4,20.2,20.4,19.5,18.1
1941,20.5,20.7,23,22.6,22.4,21.7,20.3,20.9,20.9,21.3,20.1,19.1
1942,20.1,21.8,22.1,22.4,20.9,21.5,21,19.9,20.9,21.1,20.3,18.8
1943,18.9,20.2,21.6,21.7,20.4,20,20.5,19.9,19.8,20.9,20.7,19.1
1944,17.4,20,21.7,21.4,21.3,21.6,21.2,20.1,20.5,20.9,19.9,19.3
1945,19.8,19.4,20.9,21.5,20.9,21.5,20.9,19.7,20.4,20.5,19.9,17.6
1946,19.8,20,21.8,22.4,21.1,20.4,20.5,19.6,19.3,20.1,20.1,18.1
1947,18.6,22.2,21.3,21.9,21.6,21.5,20.9,20.8,20.3,20.9,19.4,18.8
1948,18.6,19.9,20.4,21.5,20.9,20.4,20.1,20.1,20.4,20.3,19.3,18.3
1949,18.7,20.2,22.2,22.1,21.7,21.6,20.7,20.4,20.9,20.7,20.1,17.2
1950,19,19,20.9,21.5,21.3,21.8,20.3,19.4,19.4,19.8,19.4,18.5
1951,17.7,18.8,21.1,21.7,20.8,20.8,20,20.4,19.7,19.9,18.9,18.8
1952,18.4,19.4,20.9,21.5,20.9,20.8,19.7,19.6,19.3,19.6,18.2,18.3
1953,18,19.5,21.1,21,19.9,20.2,19.5,19.8,19.8,19.7,18.9,17.8
1954,18,19.6,21.1,21.9,20.2,20.4,20.2,19.2,19.4,19.5,19.3,18.2
1955,17.9,19.3,20.9,21.2,20.3,20.2,19.5,19.6,19.5,19.4,18.6,17.7
1956,17.2,19.7,21.7,21.3,20.3,20.3,20.2,19.4,19.1,18.9,18.6,18
1957,17.2,18.8,20.3,21.7,20.8,20.5,19.6,20.4,19.6,19.7,19.4,18.7
1958,18.7,19.3,21.2,22.2,20.7,20.4,20.4,20.2,19.4,19.5,19.4,18.8
1959,17.8,19.5,21.1,22,20.5,20.4,20.1,20.4,19.9,20.3,19,18.6
1960,17.9,19.6,20.8,21.6,20.5,20.6,19.9,21.1,20,20.2,19.1,19.5
1961,18.9,18.2,19.8,21.7,20.4,21.3,19.3,20.2,19.8,19.9,18.1,16.5
1962,16.7,19.8,22.1,22.1,20.7,20.5,20.3,19.7,19.7,20.3,20.8,19.2
1963,17.7,21.4,20.5,21.7,20.9,21.2,20.5,21,20.9,20.1,18.7,17.8
1964,18.6,18.8,21.8,22.5,20.7,20,20.2,19.4,19.8,19.2,18.6,18.9
1965,19.4,19.3,20.3,21.3,20.7,20.3,20.2,19.6,19.8,19.7,18.2,17.4
1966,18.3,18.6,21,21.8,20.5,20.6,20.8,20.6,19.6,20,19.3,17.8
1967,17.6,20.4,21.6,21.8,21,20.9,20.1,20.5,19.2,19.9,19.5,19.1
1968,18.2,19.2,21.2,21,20.5,20.3,19.5,20.8,20.9,20.6,20.3,19.5
1969,17.9,20,23.2,23,21.7,21.3,19.7,21.3,19.8,20.5,19.1,19.1
1970,18.8,19.7,20.7,22.5,21,20.9,20.5,20.5,19.6,19.7,19.3,16.9
1971,17.4,19.9,21.9,20.9,20.3,20.2,20.4,19.7,19.7,19.5,18.2,17.1
1972,17.8,19.8,22,21.2,21.5,19.8,21.1,20.9,20.4,20.6,18.7,18.1
1973,20,21.3,22.1,21.4,20.9,20.9,21.1,20.4,20.5,20.7,18.8,19
1974,18.3,20.3,21.1,21.4,21.2,20.9,20,20.3,19.5,19.4,19.1,17.1
1975,17.3,19.5,21.7,21.7,20.9,20,20,19.3,19.6,20.1,20.3,17.7
1976,18.4,21.2,21.7,21.1,21.5,20,20.4,19.8,19.5,20.4,20.1,18.2
1977,18.9,19.8,20.7,22.3,21.2,20.8,21.2,20,20.9,20.5,18.4,17.5
1978,18,20.6,21.8,20.9,21.4,20.2,20.4,20,20.3,20.9,19.9,16.4
1979,18.3,21,22.4,21.4,21.7,20.6,21.3,20.3,20.6,21.2,21.1,17.8
1980,19.5,21,22,22.3,21.9,21.3,20.5,20.5,20.8,20.8,20.8,16.9
1981,15.2,19.3,21.7,21.5,21.7,21.1,20.3,20.7,20.4,20.7,18.7,17.7
1982,18.7,19.2,21,21.5,22.4,20.7,19.9,20.2,19.9,20.2,19.1,17.8
1983,17.2,21,20.8,22,21.5,20.9,20.3,20.5,20.4,20.3,19.5,18.6
1984,17.5,20.2,21.6,21.2,21.3,20.5,20.7,20.6,19.8,20.4,19.6,17.8
1985,19.9,19.4,21.5,20.9,20.8,21.1,20.2,20.1,20.6,20.8,20.1,18.5
1986,17.5,20.8,21.8,21.8,21,20.4,19.9,20.2,20.2,20.4,20.2,17.6
1987,18.4,21.1,21.7,20.6,21.8,21.3,21,21,21.1,20.7,20.4,18.6
1988,19.2,20.4,22.3,21.8,21.5,20.5,20.5,20.4,20.5,20.6,19.3,19
1989,16.9,18.9,20.4,20.6,20.8,21.2,20.5,21,20.6,20.5,20.3,18
1990,19.8,19.7,20,22.1,21.4,21.7,20.7,20.9,20.9,21,21.6,20.9
1991,18.8,21.1,22.3,22.1,20.9,21.2,20.2,20.7,20.7,20.3,19.8,17.8
1992,16.5,19.2,21.9,22.2,21,20.5,20.2,20.5,20.1,19.9,19.3,18
1993,16.9,19.1,21.4,21.5,21.7,20.7,20.3,20.5,20.2,20.6,20.1,18.2
1994,18.5,19.9,21.7,22.2,21.2,20.5,20.1,20.8,19.7,20.4,19.7,17.8
1995,17.8,19.2,20.5,22.3,21.5,21,21.6,21.1,20.3,21.2,19.7,18.8
1996,20.2,21.7,22.7,21.4,20,20.6,21,20.4,20.5,20.6,19.4,18.2
1997,19,18.3,21.6,20.9,20.5,20.8,20.1,21,20.8,20.7,20.9,18.6
1998,18.1,21,22.7,23,22,21.6,21.1,20.1,20.4,20.7,20.6,18.9
1999,18.8,21,22.6,21.7,20.7,20.6,20.3,20.2,20,19.8,20,18.4
2000,18.5,19.3,21.3,21.5,21.8,20.6,20.3,20.8,19.6,20.2,20.1,17.6
2001,18,20,21.3,21.4,21.4,20.8,20.9,19.9,19.5,19.5,21.1,19.2
2002,18,20.3,21.4,21.5,21.5,21.1,21,20.9,20.4,19.9,20.5,18.6
2003,18.9,21.8,21.6,22.2,21.6,20.6,20.8,20.6,20.6,21.1,20.7,18.4
2004,19.3,20.2,22.5,21.5,21.2,20.7,20.4,20.7,20.7,20.8,20.3,19.4
2005,18.6,22.3,23.4,22.2,21.6,20.4,20.5,20.7,20.9,20.8,20.1,19.2
2006,19.8,20.4,21.5,21.7,21.7,21.4,21.2,20.7,20.6,20.7,19.9,17.4
2007,18.2,20.6,21.8,21.6,21.8,20.8,20.9,21.2,20.6,20.6,20.6,18.9
2008,17.7,19.4,21.4,21.4,21.2,21,20.6,21,20.8,21.1,20.1,19.8
2009,19.4,21,22.2,22.7,22.3,21.1,21.2,20.7,21,21.8,20.5,18.7
