1901,19,19.3,20,20.8,21.8,22,21.3,21.4,21.3,21,19.4,19.1
1902,18.6,19.1,20.5,21.1,22,21.9,21.7,20.9,21.9,21.1,20.3,19.4
1903,19.4,20,20.3,20.9,21.6,22.3,21.7,21.5,21.8,20.8,19.5,18.7
1904,19.1,19.4,19.9,21.2,21.9,21.9,21.3,21.2,21.2,20.7,19.7,19.4
1905,18.7,19.4,20.1,21.1,22.3,22.3,21.4,21.5,21.5,21.1,20,19.5
1906,18.6,18.7,19.7,20.7,21.9,21.7,21.6,21.4,21.6,20.9,20,19.1
1907,19.4,19.1,20.1,21.1,21.9,21.8,21.1,21,21.1,20.8,20.1,19.2
1908,18.7,18.8,20.1,21.6,22.2,22,21.5,21.3,21.2,20.4,19.4,19.4
1909,19,19.2,20.4,21.3,22.4,21.8,21.7,21.4,21.2,20.7,19.4,19.3
1910,18.4,18.7,18.9,20.3,21.5,21.6,21.3,21.3,21.2,20.6,19.3,18.4
1911,19,19.3,20.1,21.4,20.9,21.3,21.3,21.3,21.3,21.1,20.3,19.5
1912,19.2,18.4,20.4,21.9,22,21.7,21.4,21.3,21.2,20.9,19.4,19.6
1913,19.6,20,20.2,20.1,21,21.1,21.3,21.3,21,20.6,19.5,19.2
1914,18.8,19.2,19,20.8,21.3,21.4,21.6,21.6,21.1,20.6,19.6,19.7
1915,19,18.8,18.8,20.1,22.4,22.3,21.7,21.7,21.5,21.1,20,19.4
1916,19.9,18.9,19.6,20.6,21.9,21.9,21.4,21.3,21.2,20.7,19.6,19.4
1917,19.4,19.1,20.4,21.1,22,22,21.4,21.4,21.4,20.9,19.4,18.8
1918,18.7,19.7,20.3,21.4,21.8,21.9,21.7,21.5,21.4,21.3,20,19.5
1919,18.6,19.4,20.1,20.7,21.5,21.5,21.4,21.4,21.3,21,20.4,19.4
1920,19.4,19,20.1,21.8,22,21.4,21.3,21.2,21.3,20.7,19.6,19.2
1921,19,19.4,20.4,21.3,21.1,21.8,21.2,21.4,21.4,20.8,20.2,19.7
1922,19.4,19.6,20.6,21.7,21.9,21.9,21.3,21.5,21.3,20.9,20.1,19.8
1923,19.4,19.8,20.7,21.7,22.1,22.1,21.2,21.4,21.6,20.8,19.4,19.7
1924,19.7,18.9,19.9,21.7,22.3,21.9,21.6,21.6,21.4,20.9,19.7,20
1925,20.1,19.7,20.2,21.1,21.9,22.1,21.4,21.8,21.7,21.2,20.4,19.8
1926,19.3,19.2,20.1,21.8,21.8,21.9,21.3,21.3,21.5,20.9,19.8,19.7
1927,18.6,19.7,19.7,21.1,22.2,22.2,21.6,21.5,21.3,20.6,19.5,19.1
1928,18.4,19.4,20,21,21.4,21.9,21.4,21.2,21.3,20.6,19.5,18.9
1929,19.4,19.8,20.4,21.4,22,21.6,20.9,21,21.1,20.3,20.1,19.2
1930,19.4,19.2,19.9,20.9,21.9,21.5,21.2,21.5,21.2,20.7,19.3,18.8
1931,19.2,19.3,19.8,21.1,21.8,21.9,21.2,21.7,21.6,21.2,19.4,20.2
1932,20,20.1,20,21.1,21.9,21.7,21.3,21.3,21.7,20.9,19,19.7
1933,20,20,20.1,22,22.3,21.9,21.7,21.3,21.2,21,19.1,19.2
1934,19.6,18.9,19.1,21.8,22,21.6,21.6,22.1,21.9,21.3,20.2,19.9
1935,18.8,18.6,20.1,21.6,22.1,22.1,21.7,21.4,21.7,21.1,19.7,19.3
1936,20.3,20,20.9,21.6,22.1,22,21.7,22.1,21.7,21.6,20.6,19.5
1937,20.6,20.1,20.7,21.8,22,22,21.6,21.4,21,20.5,19,19.4
1938,19.1,19,19.7,20,21.5,21.5,21,21.1,21,20.4,19.5,18.4
1939,19.5,19.3,19.1,20.6,21.7,21.5,21.3,21.7,20.8,20.9,19.2,20.1
1940,18.8,18.6,20.1,20.8,21.7,21.7,22,22.1,21.5,20.4,19.7,19.2
1941,19.3,19.2,20.2,21.5,21.8,22.4,21.4,21.7,21.1,20.6,19.3,19.6
1942,18.5,19.5,20.1,21.3,22.4,21.7,21.3,21.1,20.9,20.5,19.5,19.3
1943,18.9,17.8,18.8,19.8,21.2,21.4,21.1,20.8,21.3,19.9,18.9,18.6
1944,18.4,18.8,19.8,20.7,21,21.2,21.3,21.2,20.5,19.8,18.8,18.5
1945,18.9,20.1,21,21.3,21.3,21.2,21.8,21,20.9,20.8,19.4,19.2
1946,20.3,19.8,19.7,21.4,22.2,22.3,20.9,21.3,21.5,20.8,21.1,19.7
1947,21.1,19.4,20.1,22.1,21.6,21.8,21.7,21.4,21.7,21.6,21.7,20.2
1948,19.8,19.1,20,20.9,22,21.8,21.4,21.7,21.4,21.2,20.4,18.9
1949,19.4,17.2,20.6,21.8,21.2,21.7,21.5,21.4,21.3,21.2,18,17.9
1950,18.6,18.4,18.6,19.9,21,21.2,21,20.4,20.6,21.2,18.9,18.3
1951,19.1,18.2,19.9,21.7,22,22.4,22.2,22.3,22.5,20.4,19.7,19.1
1952,18.9,18.3,18.9,21,21.1,21.9,20.9,22.7,23.1,20.5,21.4,18.3
1953,18.4,17.8,19.2,21.6,22.2,22,21.4,21.4,21.7,21,19.6,21
1954,19.2,17.9,19.9,20.9,21.4,21.1,20.7,21,21.1,19.4,21.1,19.8
1955,18.2,18.8,18.7,20.1,20.8,21,20.4,20.7,21,19.8,19.7,20.1
1956,18.1,18.7,19.4,20.9,21.5,21.1,20.6,20.9,21.7,20.4,18.6,19
1957,18.7,19.3,20,21.1,21.8,22.1,21.1,21,21,20.3,19.9,19.1
1958,19.1,18.9,21.6,22.3,22.2,21.9,22.3,21,20.9,20.8,20.6,19.7
1959,19.3,19.6,20.3,21.4,21.7,22.2,21.7,22.2,21.1,21.5,20,19.3
1960,18.9,19.6,19.6,20.6,22.1,21.2,20.8,20.8,20.7,20.5,20.2,19
1961,19.4,19.6,20.1,21.5,22,21.2,20.8,21.5,21,20.3,20.1,18.5
1962,18.9,18.6,20.1,21.1,20.7,21.5,21.3,21.3,21.2,20.3,19.4,18.1
1963,18.8,19.2,19.9,20.4,20.8,21.7,20.7,21.9,21.4,20.2,19.6,18.7
1964,19.4,20.2,20.2,21.7,22.1,21.3,21,21.6,21.4,20.1,19.7,19
1965,18.8,19.3,20.4,20.8,21.4,22,21.7,21.1,21.7,20.9,20.1,18.8
1966,19.6,19.6,19.8,21.9,22.2,21.4,22,21.9,21.4,22,18.5,18.2
1967,18.6,18.2,18.3,19.7,21.1,21.2,20.9,20.7,21,20.1,19.5,19.2
1968,18.4,17.7,18.2,19.6,20.9,21.3,20.9,20.8,20.3,20.1,19.6,19.1
1969,18.8,19.2,20.3,21.3,21.8,21.8,21,20.9,20.7,20.7,19.4,18.8
1970,18.9,18.6,19.7,20.8,20.5,21.5,20.8,20.7,20.2,20.8,18.1,18.4
1971,18.5,18.8,19,19.2,21.1,21,20.7,20.4,20.3,20.4,19.5,18.6
1972,18.7,18.5,19.1,20.8,21.3,22.2,21.6,20.6,21.2,20.4,20.3,19.4
1973,18.6,18.7,21.4,21.8,21.8,21.6,21.3,21.4,21.4,20.4,20.1,18.3
1974,18.6,17.7,19,20.3,21.1,21.8,20.9,20.7,20.6,19.5,19,19.7
1975,19.1,18.7,20.7,21.8,22.8,23.3,21.7,21.4,20.7,20.4,19.8,19.3
1976,18.4,18.3,20,21,22.5,21.8,21.6,21.7,22,21.7,20.3,20.9
1977,19.5,20,21,21,22,22,22,22.4,22.3,22.1,20.6,20.7
1978,19.1,19.2,20.5,21.5,22.7,22.7,21.1,21.8,21.8,21.2,21.1,20.4
1979,20,19.4,20.2,20.8,22.7,22.2,22.1,21.6,21.9,21.9,20.6,20
1980,20.2,20.1,21.4,22,22.2,22.6,22.3,22.4,21.9,21.3,20.4,19.1
1981,18.2,19.7,20.9,21.3,22.5,22.1,22,21.8,21.5,21.3,19.6,19.4
1982,19.8,20.2,21.4,21.4,22.1,22.4,21.6,21.9,21.7,20.9,20.5,19.8
1983,20.4,21,21.5,22.7,23.8,23.5,21.9,22,21.7,21.1,20.9,20.5
1984,19.4,19.7,20.2,22.1,22.9,22.4,21,21,20.9,20.9,19.3,20
1985,19.5,19.4,20,21,21.9,21.9,22.2,21.5,21.6,20.8,20.5,20
1986,18.7,19.6,19,20.7,21.8,22,21.4,21.6,20.9,20.6,20.7,19.4
1987,19.2,20.1,21.3,21.1,22,22.6,21.2,21.7,21.8,20.7,20.8,20.7
1988,20.4,20.1,20.5,21.7,22.2,22.4,21.8,21.5,21.1,20.6,20.5,19.6
1989,19.6,19.1,19.2,21.2,21.8,22.1,21.6,21.8,21.3,20.5,20.8,20.4
1990,20.1,20,20.1,21.6,22.3,22,21.9,21.8,21.2,21.1,19.3,20.3
1991,20.2,19.4,19.6,22.2,23.2,22.3,22.5,21.9,22,21.5,19.8,20.3
1992,20,19.5,20.4,21.8,21.7,23.2,22.3,21.8,20.9,21.4,21.2,20.8
1993,20,20.4,20.4,21.9,22.3,23.7,22.3,21.9,21.4,21.7,20.7,19.6
1994,20,20.5,20.2,22,22.5,22.9,21.9,22,21.7,21.5,20.6,20.3
1995,19.9,19.3,20.2,21.9,22.5,22.6,22.2,22.5,21.9,21.9,20.6,20.3
1996,19.2,19.4,19.5,21.5,22.7,22.7,22.2,21.9,22.3,21.7,20.3,20.3
1997,19.7,20.4,21,22.4,23.2,22.7,22.5,22.1,22.1,22.1,21.4,21
1998,20.6,20.3,20.5,22.2,23.1,23,22.1,22.8,22.7,21.7,20.8,19.5
1999,19.3,18.6,19.8,21.2,22.1,22.1,21.6,21.4,21.4,20.8,19.3,18.8
2000,18.5,18.6,20.1,20.8,21.9,22,21.5,21.6,21.8,21.1,20.5,19.3
2001,18.8,20.2,19.7,21.6,22.1,22.8,21.8,22.1,21.6,21.7,20,20.2
2002,19.7,19.6,20.8,21.1,22.2,22.9,22,21.9,22.1,21.3,20.4,20.2
2003,18.6,20.6,21.4,21.2,22.8,23.1,21.9,21.8,22,21.5,20.7,18.6
2004,19.8,20.1,20.5,21.4,21.9,22.1,21.4,21.6,21.7,21.6,19.9,18.9
2005,18.8,18.8,21.3,21.7,22.6,22.8,22.4,22,21.9,21.1,19.9,20.1
2006,19.7,19.2,20.2,21.5,22.4,22.1,22.2,22.3,21.8,22.1,20.1,20.7
2007,20.6,19.8,20.3,21.9,22.4,22.7,22.5,22,21.6,21.4,19.8,19.8
2008,19.5,20.1,20.5,21.3,22.5,22.5,21.9,21.9,22,21.1,19.4,19.7
2009,19.9,19.1,19.4,21.9,22.7,22.4,22.3,21.7,22,21.9,20.6,22
