1901,22.5,21.7,22,20.3,18.8,17.1,16.3,15.7,16.6,18.5,21.7,20.8
1902,22.7,21.8,21.3,21.2,19.3,17.1,16.9,16,18.7,19.1,21,21.4
1903,22,21.6,22.1,21.1,19.8,18.1,16.2,16.7,16.1,18,20.3,21.1
1904,21.3,21.5,21.6,20.3,19.4,16.9,15.8,16.7,16.3,19.4,21.5,21.6
1905,22.1,21.7,21.4,19.9,19.6,18.4,16.2,16.9,16.4,19.6,20.1,21.1
1906,22.9,22,22.5,21.1,19.2,17.1,16.2,16.2,16.9,18.4,20.2,21.1
1907,21.9,21.8,21.2,20.6,19.2,17.3,15.3,16.5,17.5,20.1,20.7,20.7
1908,22.1,21.5,22.1,20.8,18.5,17.8,16.3,17.1,18.1,20.1,21.2,21
1909,21.6,21.7,21.6,20.6,18.6,16.2,17,16.5,18.1,18,20.8,20.8
1910,22.1,21.8,21.6,21,18.7,16.4,16,16.7,17.6,19.3,19.2,20.5
1911,21.7,21.1,21.3,19.5,18.5,16.8,16.5,16.5,17.5,19.3,20.3,22.2
1912,22.5,21.4,22.5,21.1,19.7,17.5,16.4,17,18.6,19.4,21.6,21.4
1913,21.4,21.4,22.3,19.9,19.9,17,15.8,17.4,17.8,19.9,20.4,20.9
1914,21.6,22.3,21.8,21,19.3,17.8,16.1,17,17.9,19.1,19.9,22.2
1915,22.1,22,21.9,21.4,19.4,17.1,16.9,16,17.1,20,20.7,21.3
1916,22.1,21.5,22,20.9,18.8,17,15.1,16.8,17.2,19,19.5,20
1917,21.3,20.6,21.1,20.4,19.8,17.5,16.9,16.6,16.9,17.3,20.1,20.2
1918,22.1,21.2,21.5,20,18.8,17.5,15.9,16.2,17.3,19.4,20.5,21.5
1919,22.1,21.9,22,19.9,18,17,15.4,17.6,18.6,19,21.3,21.8
1920,21.8,21.5,21.6,19.8,19.2,16.2,15.3,16.8,18.6,20,20.2,20.7
1921,21.6,21.5,21.1,19.9,18.8,17,16.2,16.6,17.6,19.6,20.3,20.6
1922,21.1,21.4,21.6,19.1,18.7,16.5,15.3,16.5,16.7,18.5,20.6,21.6
1923,22.4,21.9,22.2,21.1,19.7,17.2,16.9,16.1,18.1,19.3,21.2,21.5
1924,22.1,21.7,22.4,20.4,19.5,17.3,16.8,17,17.8,18.8,20.4,21
1925,21.7,21.7,21.5,21.1,18.5,18.4,17.3,16.3,18.9,19.5,20.4,21.5
1926,22.7,22.3,22.9,21.9,19.9,18.6,16.9,17.4,18.7,19.6,21.6,21.7
1927,22,22,21.5,20.8,19.3,17.4,15.8,17.1,17.8,19.4,20.6,22.1
1928,21.4,22.1,22.2,21.7,19.9,17,16.4,16.8,17.6,19.6,20.9,21.3
1929,22.5,20.7,22.7,21.2,19.2,17.9,17,16.9,17.8,20.2,21.1,21
1930,21.3,22.2,21.6,20.7,18.2,16.8,16,15.9,18.8,18.8,21,21.6
1931,21.3,21.5,21.3,20.3,18.6,16.7,16.1,16.1,16.5,17.8,19.4,20.8
1932,22.1,21.4,21.9,20,18,17,16.3,16.6,16.7,18.3,20.9,21.1
1933,21.9,21.2,21.1,20.5,18.8,16.8,16.2,16.5,16.2,18.9,21,21.1
1934,21.6,21.5,22,20.6,19.1,15.9,16.1,15.4,16.5,18.4,20.2,20.5
1935,21.7,21.4,22.1,20.2,19.5,17.2,15,16.8,18,19.1,19.9,21
1936,21.6,22.5,22.1,20.7,19.3,16.7,16,16.1,17.2,19.7,20.7,21
1937,21.6,21.8,21.4,20.6,18.7,17.7,16.1,16.3,18.3,18.5,21.7,21.5
1938,22.1,21.8,22.1,21.1,19.5,16.7,16.8,17,17.4,18.7,19.6,21.7
1939,22.1,22.1,21.7,20.7,19.4,17.5,16.6,16.2,17.8,19.1,20.7,20.8
1940,21.3,21.5,21.3,20.3,18.5,16.7,16,16,16.5,17.7,19.5,20.9
1941,20.7,21.9,22.1,21,19,17.5,16.1,16.7,17.8,18.7,20,21.5
1942,22,22.3,22.3,20.8,18.7,16.9,15.7,16.5,17.5,17.4,20.1,21.2
1943,21.4,21.2,21.4,20.9,18.8,16.6,15.5,16.4,15.5,17.6,19.8,21
1944,21.4,21.9,21.4,20.2,19,18.3,15.8,16.4,17.5,17.9,20.7,21.2
1945,22.4,21.4,22.2,21.4,18.8,16.6,15.9,16.4,17.3,19.8,20.2,21
1946,21.8,22.3,21.5,20.6,19.2,17,16.6,16.8,16,18.9,20,21.3
1947,22.2,22.3,21.3,21,19.2,17.2,17.3,16,17.1,18.3,19.9,21.7
1948,22,22,21.9,21.5,20.2,17.6,16.5,16.5,17.1,18.4,20.2,20.6
1949,22.2,22,21.8,20.3,19,17.1,16.3,17.1,17.7,19.1,20.5,21.7
1950,22.3,21.2,21.4,20.5,18.1,16.8,15.6,16.4,16.1,18.3,20.3,21.2
1951,20.5,20.2,20.2,20.2,18.5,16.4,16,15.7,15.9,17.6,18.8,20.6
1952,20.8,20.9,21,20.2,18.6,16.5,15.6,15.4,15.9,16.6,18.3,20.4
1953,21,21.1,21,20.6,18.8,17.3,15.6,15.4,16.2,17,19.4,20.8
1954,21,21.7,20.7,19.8,18.6,16.4,15.9,15.6,16.3,17,19.1,20.4
1955,21.5,21.4,20.9,19.7,18.2,16,15.7,15.5,16,16.9,19.2,20.3
1956,20.3,20.4,20.8,19.9,18.1,16.4,15,15.6,16.5,17.2,19,20.7
1957,21.1,20.5,20.5,19.8,17.9,16,15.4,15.9,16.8,18.1,19.7,21.1
1958,21.4,22.2,21.3,20.8,17.8,16.2,15.6,16.1,17.1,17.7,19.3,20.9
1959,21.1,21.5,21.1,19.6,18,16.3,15.5,15.3,15.7,17.1,19.5,21
1960,20.8,21.3,20.5,19.8,18.2,16.9,15.1,15.6,16.4,17,18.7,20.9
1961,21.2,21.9,21.7,21.4,19.7,17.8,16.9,16.3,16.6,18.2,20,21.2
1962,21.9,21.8,21.4,20.3,18.3,16.5,15.9,16.2,16.8,17.8,19.9,21.4
1963,21.8,21.2,21.2,20.8,17.9,17,16.2,15.6,15.9,17.2,19.3,20.5
1964,21.1,22,21.6,20.1,17.7,16.4,15.5,15.3,16,17,18.9,20.5
1965,20.9,21.2,20.2,20.1,17.9,16.2,15.8,16.1,16.8,17.5,19.4,20.6
1966,21.6,21.8,21.1,20.9,19.6,17.3,16.5,16.1,16.8,17,19.1,20.8
1967,21.6,21.8,21.9,20.9,18.9,17.2,16.8,16.2,16.8,17.9,19.6,20.5
1968,20.9,21.3,21.1,20,17.9,16.9,16.2,16,16.2,17.6,19.4,20.7
1969,21.5,22.2,22.5,21.7,18.8,17.3,16.9,16.4,16.6,18.9,20.6,22
1970,21.9,22.7,21.6,19.9,18.3,16.9,16.4,16.2,16.4,17.2,19.4,20.3
1971,21.1,21.7,21,19.9,18.3,15.8,15.9,15.1,15.7,16.7,18.9,20.8
1972,20.9,20.9,20.7,20.3,19,16.6,16.7,16.6,16.7,17.7,19.4,20.7
1973,21.4,21.3,21.5,19.6,18.7,16.8,16.1,15.9,16.4,17.6,18.5,21
1974,20.5,20.5,20.4,20.2,18.7,16.3,15.8,15.6,15.8,17.3,18.8,21
1975,21.1,21.5,20.7,20.5,18.6,16.4,16.2,15.3,15.4,16.7,19.2,20.2
1976,20.6,21,20.5,20.5,18.8,17.2,16.5,16.4,16.3,17.9,19.7,21.2
1977,21.4,21.1,21.5,20.1,19.7,17.3,16.4,16.7,16.8,18.6,19.6,21.2
1978,21.7,21.5,20.6,20.5,18.8,16.7,15.8,16.2,17,18.1,19.2,20.8
1979,21,21.1,21.1,20,18.2,16.2,16.1,16.4,16.8,18,19.9,21
1980,21.1,21.1,21.7,20.6,18.2,16.5,15.7,15.8,16.1,18,19.4,20.8
1981,21.5,21.6,22.3,20.4,18.3,16.7,15.5,16.2,16.6,18.3,19.5,20.9
1982,21.3,21.4,21.2,20.3,18.3,17.1,16.5,16,17.1,17.7,19.9,20.8
1983,20.9,22.4,21.6,20.3,18.7,17.1,16.1,15.8,16.2,17.7,19.3,20.7
1984,21.5,21.6,20.6,20,17.7,16.3,15.1,15.1,15.8,17.5,19.5,19.8
1985,21.6,21.2,21.2,20,18,16.2,16,16.5,16.4,17.3,18.4,20.6
1986,20.8,21.6,20.9,20.2,18.5,15.4,15.2,15.8,15.9,17.9,19.5,20.9
1987,21.5,21.6,21.6,20.1,18.5,16.5,16.6,16.5,16.7,18.3,19.3,21.1
1988,22,21.7,21.4,20.4,18,17.2,16.3,15.8,16.5,17.9,19,20.5
1989,21.5,21.2,22.1,19.7,18.7,16.9,15.9,16.3,16.6,17.6,19.4,20.7
1990,21.2,21.3,21.4,19.7,18.8,16.8,15.3,16,16.7,18,18.5,20.5
1991,21.4,21.7,21.5,20.1,18.4,16.7,15.7,16.1,17.2,18.2,20,20.5
1992,22,21.1,22,20.5,18.7,17.1,15.1,16.1,16.6,18.3,20.2,21.8
1993,22.1,21.6,20.8,20.8,19.1,17.2,15.9,16.2,16,17.7,19.2,21.2
1994,21.6,22.6,21.6,21.6,19.3,17.6,15.7,17.3,17.6,18.5,19.8,20.8
1995,21.7,21.9,22,20.5,18.2,17.2,16.5,16.5,17.1,17.8,19,21.3
1996,21.7,21.5,21.9,20.4,18.7,16.9,15.7,15.7,17.4,17.1,19.7,21.6
1997,21.1,21.3,21.8,20.9,19.3,17.6,16.2,16.4,16.7,17.5,20.6,21.6
1998,22.1,22.9,22.4,20.6,19.4,17.6,17,16.2,17.1,17.9,19.8,21.1
1999,21.3,22,21.7,20.7,19.1,16.8,16,16.3,16.7,17.3,19.4,21.1
2000,21.7,21,21.3,20.4,19,17.7,15.7,16,16.3,17.8,19.7,21.3
2001,21.8,21.9,22,20.8,19.1,16.8,16.1,16.2,16.6,17.7,19.8,21.1
2002,20.9,21.9,21.8,20.5,18.8,16.8,17,16.3,16.9,18.2,20.4,21.3
2003,21.6,22,22.1,21.3,20.3,17.3,16,15.8,17,18.7,20,20.3
2004,20.2,22.4,22.1,20.6,18.3,16.7,16.8,16.9,17.3,18.4,19.3,20.8
2005,22.3,23,22.5,21.5,19,17.4,16.2,16.7,17.3,18.2,20,20.9
2006,21.7,22.1,21.9,20.5,19,17.3,16.5,16.4,16.8,18.3,20.4,21.8
2007,22.1,22.3,21.9,20.6,19.6,17.4,16.6,16.8,17.2,18.2,20.1,21.4
2008,21.8,21.9,21.3,20.1,18.7,16.7,16.5,16.6,17,18.6,20.3,21.8
2009,22.5,22.5,21.9,20.9,19.1,17.8,16.7,16.5,17.1,18.5,20.2,21.7
