1901,17.6,18,19.8,20.7,20.9,20.7,20.2,20.5,20.1,19.5,18.1,17.3
1902,16.5,17.8,20.4,20.7,21.2,20.6,20.4,19.6,21.2,20.1,19,17.6
1903,17.6,19.2,20.1,20.5,20.5,21.4,20.6,20.6,21,19.5,17.8,16.5
1904,17.3,18.4,20,20.8,20.8,20.7,20.1,20.3,20.3,19.6,18.2,17.4
1905,17.2,17.7,19.9,20.9,21.1,20.8,20.1,20.4,20.5,19.6,18.5,17.2
1906,16.5,17.2,19.2,20.2,20.9,20.5,20.4,20.3,20.7,19.7,18.6,17.1
1907,17.7,17.9,19.7,20.8,20.9,20.6,19.6,19.8,20,19.6,18.7,17.2
1908,16.7,17.4,19.8,21.5,21.5,20.8,20.1,20.2,20.2,19,17.7,17.4
1909,17,17.9,20.3,21.1,21.7,20.5,20.5,20.5,20.1,19.4,17.7,17.3
1910,16.2,17.2,18.1,19.6,20.4,20.2,19.9,20.3,20.1,19.4,17.5,16
1911,17.2,18,19.8,21.2,19.5,19.8,20.1,20.2,20.3,20.1,19,17.7
1912,17.4,16.7,20.2,21.9,21.1,20.4,20,20.3,20.1,19.8,17.6,17.7
1913,18,19.1,19.9,19.2,19.6,19.5,19.8,20.2,19.9,19.2,17.8,17.1
1914,16.8,18,18.2,20.3,20.1,19.9,20.4,20.6,20,19.4,17.9,17.9
1915,17,17.4,17.9,19.2,21.4,21.1,20.7,20.6,20.4,19.6,18.4,17.6
1916,18.3,17.2,18.9,20,20.6,20.1,20.7,20,19.9,19.1,17.5,17.5
1917,17.2,17.6,19.3,19.9,20.9,19.7,19.8,20,19.8,18.9,18.1,16.2
1918,16.7,18.5,19.5,20.7,20.6,20,20.3,20.2,20.2,20.3,18.5,17.3
1919,16.2,18.1,19.6,19.9,20.4,20,20,20.3,20.1,19.8,19.1,17.4
1920,17.4,17.6,19.7,21.8,20.9,19.8,19.9,20,20.1,19.3,17.9,17.1
1921,16.8,17.6,19.8,20.5,19.4,20.2,19.9,20.1,20.1,19.1,18.3,17.5
1922,17.6,18.3,20,21.5,21.1,20.3,20.1,20.6,20.4,19.4,18.4,17.5
1923,17.3,17.8,19.8,20.9,21.3,20.5,20.2,20.4,20.2,19.2,17.7,17.7
1924,17.2,16.6,19.6,20.9,20.6,20.9,20.4,20.5,20.1,19.2,17.4,17.7
1925,17.6,17.8,19,19.9,19.6,19.9,20,20.4,20.1,20.3,18.4,17.2
1926,17,17.7,19.8,20.5,20.3,20.6,20.7,20.4,20.6,20,17.6,17.9
1927,16.6,18.5,19.7,20.7,21.7,21.1,20,20.8,20.5,19.5,18.1,17.5
1928,16.5,18.7,19.8,20.4,20.1,21.5,20.5,20.7,20.8,20,18.1,17.1
1929,17.8,19.1,20.5,22,20.7,20.2,19.7,20.2,20.1,19.6,18.9,16.7
1930,17.5,18.1,19.5,19.6,21.1,20,19.7,20.4,20.4,19.8,17.8,16.6
1931,16.8,18.4,19.1,20.2,20.3,20.5,20,20.5,20.4,19.8,17.6,18
1932,18.1,18.9,19.2,20.2,20.9,20.4,19.9,20.4,20.8,19.6,16.5,17.3
1933,17.6,19.2,19.4,21.9,21.3,20.3,20.3,20,19.8,19.3,17,16.6
1934,17.3,17.8,18.5,20.5,20,20.2,20,20.5,20.3,19.4,18.2,17.5
1935,16.2,16.6,19.3,21,21.1,20.4,20,20.2,20.5,19.3,17.8,17.2
1936,18.2,19.3,20.5,20.7,20.4,20.7,20.3,20.6,20.3,19.9,18.5,17
1937,18.8,19.1,19.8,21.1,20.4,20.4,20.1,20.2,19.9,19.1,17,16.9
1938,17,17.6,19.6,19.9,20.2,19.8,19.7,19.9,19.7,18.6,17.8,16
1939,17.3,18.4,18.7,20.3,20.4,20,19.8,20.2,19.3,19.4,16.8,17.6
1940,16.2,17.2,19.2,20.7,20.8,20.1,20.2,20.8,20.4,19,18,16.9
1941,16.6,17.2,18.6,21.1,19.8,21.4,20.6,21.6,20,19.6,17.9,17.6
1942,16.2,18.1,18.6,20.3,21.2,20.6,19.9,20.4,20.1,19.6,17.8,18.1
1943,17.4,16.5,18.6,20,20.7,19.9,20.3,21.4,20.6,18.8,17,16.9
1944,16.8,19.5,20.4,21.1,20.9,20,21.1,19.2,20.6,18.9,19.1,17.2
1945,17.4,19.4,20.9,20.6,20.3,20.8,20.9,20.2,20.4,20,19,18.6
1946,18.5,19.3,19.4,20.6,21.3,20.3,20,20.2,20.1,19.4,19.3,17.8
1947,18.8,18,19.8,21.2,20.2,20.6,19.6,20.2,20.1,20.3,20,18
1948,17.7,18.7,20,20.3,20.4,21,19.6,21.4,21.1,20,19.6,18.3
1949,18.5,18.3,19.8,21.1,20.7,20.8,20.4,20.6,19.7,20.5,17.2,17.2
1950,18.1,18.3,19.1,19.7,20.2,19.8,19.6,19.5,20.1,19.4,17.9,16.6
1951,16.8,17.3,18.8,20.4,20.6,20.8,19.7,20.6,20.1,19.6,18.1,17.6
1952,17.8,18.2,20.4,20.3,20.1,20.1,19.8,20.2,20.2,18.7,18,16.8
1953,17.1,18.7,19.9,21.8,21.2,21,20.5,21,20.4,19,18.2,17.2
1954,17.8,17.9,19.6,20.5,20.2,20.1,19.9,20.4,20.2,18.8,17.7,16.6
1955,17.5,17.8,19.4,20.7,20.8,20.6,19.3,20.6,20,18.6,18.4,17.1
1956,16.1,18.6,19.2,20.7,19.8,19.4,19.6,20.6,19.6,19.3,17.4,17.3
1957,18.1,18.1,19.7,20.9,21.8,21.4,20.3,20.5,20.6,19.5,19.1,16.9
1958,16.6,17.9,20.3,21.5,20.8,21.1,20.3,21,20.5,20.1,19.1,17.5
1959,17.6,19.3,19.8,20.6,21,21,20.3,20.6,21.1,19.6,17.9,17.2
1960,18,17.8,19.3,20.5,21.2,20.5,20,20.3,20.5,20.3,18.6,17.1
1961,17.5,18.5,20.3,20.8,21,20.1,19.9,20.6,20.2,19.5,17.6,17.8
1962,17,19.1,19.8,20.9,20.5,20.3,20.3,20.2,20.3,19.8,17.8,17
1963,17.1,17.8,19.8,20.5,20.2,21,20.1,20.5,19.9,19.2,18.2,16.3
1964,16.7,18,20.9,21.6,20.9,19.9,19.7,20.4,20.3,18.6,18.3,17
1965,17.1,18.1,19.3,20.5,20.6,20,19.8,20,20,19.1,18.2,17.6
1966,17.3,18,19.1,20.9,20.4,19.7,20.4,20.6,20.4,19.2,17.2,16.2
1967,17.3,17.6,19.2,20.5,20.4,19.9,20.2,20.4,19.8,19.1,18,17.7
1968,17.4,16.9,18.7,20.7,19.9,19.9,19.6,20.1,20,19.4,18.1,17.4
1969,17.7,18.7,20,21.6,21.9,21.5,20.9,20.2,20.5,20.2,18.5,17.9
1970,17.3,18.3,20.3,22.2,20.6,21.2,20,20.5,20.3,19.8,17.1,17.9
1971,18.3,19,20.2,20.6,21.4,20.3,20.2,20.1,20.9,19.8,18.5,18.9
1972,19,18.7,20.2,21.5,21.3,21.2,20.7,20.3,20.9,20.3,19.7,18
1973,18.2,18.2,20.6,21.5,21.4,20.7,20.4,20,20.8,19.5,19.3,18.2
1974,18.6,17.9,18.9,21.6,20.7,20.1,19.6,20.5,19.6,17.8,17.8,17.5
1975,17.1,18.9,20.8,21.5,21.2,22.5,20.2,21.3,20.2,19.9,18.5,17.2
1976,16.2,17.1,20.2,20.2,20.7,19.9,20.2,20.8,21,20.3,17.4,16.8
1977,16.6,17.3,20.7,20.3,20.7,20.3,20.3,20.7,20.9,19.8,18.6,17.7
1978,17.2,17.6,19.4,20.8,21.4,20.4,19.9,20.4,20.2,19.9,19.4,18.1
1979,16.9,17.8,20,21.4,21.1,19.7,20.8,20.1,19.8,19.9,18.2,17.7
1980,18,17.8,20.6,20.4,21.9,21.5,20.6,20.4,20.3,19.5,18,16.6
1981,16.1,17.8,20.2,20.9,21.4,20.4,20.1,20.3,20.1,19.7,18.3,18
1982,18.2,18.9,20.4,21.3,20.6,21.1,20.2,20.6,20.1,19.4,18.3,17.5
1983,17.1,17.8,18.7,21,22,21.8,20.4,20.7,20.5,19.6,19.1,17.8
1984,16.9,18,19.7,21.5,20.3,20.3,19.6,19.7,19.6,20.3,18.3,17.7
1985,16.7,18,19.8,20.6,20.9,20.9,20,20.4,20.5,20,18.8,17.5
1986,16.8,18.7,18.7,20.5,20.6,20.9,20,20.3,20.5,19.7,19,17.6
1987,16.7,18.4,19.8,19.8,21.5,21,20.2,20.8,21.1,19.6,18.6,18.1
1988,17.5,17.9,19.8,21,21.2,20.6,20.3,20.2,20.2,19.3,19.3,17.1
1989,18.4,18.5,18.5,20.6,20.9,20.7,20.3,20.4,19.8,19.5,19.2,16.2
1990,17.7,18.7,19.9,20.8,21.2,20.6,20.3,20.5,20.4,19.7,18.5,17.3
1991,18.6,18.1,20.9,21.9,21.1,21.5,21.4,20.7,20.2,19.9,17.9,17.7
1992,18,17.6,20.8,21,20.1,21.8,20.7,20.5,20.1,19.7,19.1,18.7
1993,18.1,19.7,20.6,21.2,20.7,21.6,20.6,20.6,20.5,19.9,18.4,17.1
1994,18.2,19.2,20.1,22.6,21.2,21,20.7,20.5,20.5,20.3,19.7,17.9
1995,18.6,18.5,20,21,22,21.1,20.4,20.7,20.3,19.6,19,18.6
1996,17,18.2,19.3,20.4,21,20.8,20.4,20.3,21.3,19.8,18.3,17.7
1997,18.1,18.6,21.3,20.9,21.4,22.3,20.5,21.4,20.7,19.9,19.4,18.4
1998,18.1,19.4,20.8,22.2,22.2,22.4,20.7,21.4,21.3,20.6,19.5,18.6
1999,18.3,18.7,20.2,21.7,21.6,20.5,20.4,20.4,20,19.3,17.6,17.1
2000,17.7,18.8,20.8,21.8,21.5,21.1,20.9,20.8,20.7,20.2,19.5,17.9
2001,17.6,19.8,20.2,21.1,21.3,21.4,20.9,21.1,21,20.1,19.4,18.4
2002,18.3,18.9,20.5,21.6,21.8,21.3,21.1,21.2,21,21,19.5,18.6
2003,19.2,19.2,21.1,20.9,22.3,22.1,20.4,21.5,21.4,20.8,19.7,17.7
2004,18.6,19.4,21.5,22,21.3,21.7,20.8,21.6,21.1,20.9,19.8,18.6
2005,18.5,19.4,21.3,22.2,21.6,21.4,21,21.7,21.1,19.7,18.9,18.6
2006,18.6,18.6,21,21.6,21.2,20.7,20.8,21.3,21.2,20.7,18.7,18.8
2007,17.3,19,20.8,21.6,21.5,21.8,21.1,20.8,20.9,19.7,18.9,18.6
2008,18.5,19.6,20.3,21.1,22.2,20.5,20.4,21,20.7,19.5,18.1,18.2
2009,18.2,18.9,20.3,22.3,21.9,21.6,21.5,21.1,21.3,21,18.4,19.2
