1901,21.2,22.5,21.6,20.3,18.5,16.7,15.5,15.9,15.9,16.3,17.2,19.2
1902,21,21.9,21.7,20.3,18.5,16.5,16.1,15.5,15.9,16.2,17.6,19.6
1903,21.4,23.1,21.8,19.8,17.8,16.3,15.5,15.1,15.7,15.8,16.8,18.5
1904,20.5,21.6,21.1,19.7,17.6,16.7,15.2,15.5,15.5,15.8,17.5,19.2
1905,21,22.5,21.2,20.1,18.2,17.1,15.8,15.5,15.5,16.3,17.5,19.1
1906,21.1,22.3,21.6,20.4,18.1,16.2,15.5,15.3,15.8,15.6,17.5,18.6
1907,20.8,21.4,21.8,19.7,18.1,16.6,15.3,15.3,15.7,16,17.4,19.4
1908,21.2,21.9,21.7,20.2,18.3,16.9,15.3,15.1,15.3,15.4,17,19
1909,20.7,21.6,21.6,19.6,18.3,15.9,15.2,14.9,15.7,16,17,18.9
1910,21.1,22.1,21.6,19.6,17.1,15.4,14.4,14.4,14.4,15.1,17,18.5
1911,20.9,22.1,20.7,19.6,17.3,16.3,15.4,15.4,15.3,16.2,17.9,20.3
1912,22.6,23.6,23.2,21.4,17.9,15.9,14.8,14.8,15.6,16.3,16.9,19.5
1913,21.9,22.3,22.2,20.2,17.7,16,15.7,15.7,15.8,17.4,18.8,20.1
1914,22.2,23.2,22.2,20.4,17.8,16,15.4,15.7,15.6,16.3,17.5,20.4
1915,22.6,24,22.9,21.5,18.6,16.3,15.8,15.7,15.2,15.8,17,19.8
1916,21.5,22.7,22,20.9,17.9,14.9,13.8,14,15.6,15.4,16.1,19.6
1917,21.6,22.7,22.6,20.9,18.4,16.9,15.1,15,15,15.6,17.7,18.5
1918,21.2,22,21.7,20.1,16,18.4,16.9,17.4,15.9,16.1,17.7,20.1
1919,22.3,23.5,22.3,20.9,19,16,14.8,15.1,15.6,16.1,17.5,19.2
1920,21.4,22.3,22,20.1,17.1,15.4,14.2,14.7,15.1,16.1,17.2,18.6
1921,20.5,21.6,21.3,19.6,17.9,14.3,13.5,14.5,14.5,15.2,17.4,19
1922,21.5,22.6,22,20.9,18.5,16.6,16.1,15.2,16,16.2,17.9,19.2
1923,21,22.2,21.9,20,18.5,17,16.1,15.9,16.4,16.1,18.1,19.6
1924,22.2,22.4,22,20.6,18.4,16.8,15.6,15.5,15.7,16.3,17.3,19.3
1925,21,21.6,21.4,20.3,18.8,17.1,15.5,16.5,15.7,16.8,18,20.1
1926,22.2,22.9,22,20.5,18.5,17.1,15.7,15.9,16.4,17.5,18.8,20.5
1927,22.1,22.8,22.5,20.5,18.4,16.8,15.7,15.9,16.6,17.5,18.8,20.7
1928,22.2,23.2,22,20.5,18.8,16.9,15.7,15.9,16.4,17,18.9,20.5
1929,22.3,22.9,22.4,20.5,18.5,16.9,15.7,15.7,16.2,17,18.5,20.5
1930,21.8,22.7,22,20.5,18.2,16.9,15.7,15.5,15.9,17.1,18.5,20.8
1931,21.4,22.1,22,20.7,18.1,16.6,15.6,15.7,16.2,17.4,18.9,20.3
1932,21.9,22.6,22.1,20.6,18.7,17.1,16.2,16,16.2,16.8,17.8,19.7
1933,21.2,22.7,22,20.5,18.3,16.7,15.6,15.5,16.1,16.8,17.8,19.7
1934,21.6,22.1,22,20.5,18.5,16.9,15.7,15.5,15.9,17.2,18.4,20.4
1935,21.8,22.7,22.3,20.4,17.8,16.8,15.7,15.5,16.2,16.6,18.2,20
1936,21.5,22.9,22,20.5,18.5,16.6,15.7,15.6,16.2,17.1,18.3,20.1
1937,21.9,22.5,22.5,21.3,19,17.8,16.9,16.9,16.9,17.2,19.1,20.7
1938,22.3,22.9,22.5,21.4,19,17.3,16.5,16.6,17,17,18.9,20.5
1939,22,22.9,22.6,22,19.2,18.2,16.9,15.8,16.6,17.7,18.5,20.2
1940,22.1,23.7,23,21.3,19.4,17.8,16.8,16.4,17.3,18.1,19.5,20.4
1941,22.7,23.5,23.5,21.5,19.9,17.4,16.7,16.9,17.4,18.4,20.1,21.5
1942,23.1,24.5,23.3,22,19.7,18.6,17.4,17.8,17.4,18.6,20,19.8
1943,23.4,24.3,23.6,22.1,19.3,18.3,17.6,17.1,17.9,18.5,20,21.3
1944,23.3,23.4,23,21.3,19.5,17.1,17.4,17.7,17.7,18.3,19.5,21.4
1945,22.8,23.4,21.7,22.3,20.1,17.1,16.3,17.4,17.4,18.4,19.8,20.1
1946,23.2,24.3,23.5,20.7,18.6,16.8,15.4,15.6,16.4,17.2,18.7,20
1947,22.9,23.9,23.3,21.8,19.8,16.7,15.5,15.4,15.9,16.4,17.9,18.6
1948,21.4,22.7,21.7,20.5,19,16.9,15.3,15.2,15.2,16.8,18,19
1949,22.6,22.2,22.2,20.2,17.3,16,14.5,15,14.9,15.3,17.6,18.7
1950,20.3,20.9,20.3,18.8,16.8,14.7,14.7,14.5,15.1,16.1,17.2,19.4
1951,21,20.3,20.4,19.3,18.3,17.6,17.2,16.6,16.3,17.2,18.3,19
1952,21.9,22.5,22.2,19.5,17.8,15.8,14.9,15.3,16.2,16.7,17.4,19.4
1953,21.3,22.2,22.2,20.9,18.3,16.5,15.8,15.9,17,16.7,18.2,19.1
1954,21,21.8,20.8,18.8,16.7,15.2,14,14.3,15,15.4,17.3,19
1955,21.4,21.8,20.9,19.1,17.3,15.6,14.5,14.3,14.7,15.7,17,19.1
1956,20.1,20.9,20.6,18.4,16.8,15.3,14.5,14.9,15,15.8,16.9,18.5
1957,20.3,22.2,22.4,21.4,19.8,18.3,17.1,16.3,16.5,17.3,19,20.7
1958,22.7,23.1,22.2,20.8,18.2,16.2,15.6,15.5,15.6,16.2,16.3,18.7
1959,20.4,21.7,21.7,20.2,18.3,16.6,15.3,15.2,15.9,16.7,18.2,19.8
1960,21.4,22.2,21.4,19.6,17.9,16.3,15.7,15.4,15.1,16.4,17.7,19.8
1961,22,22.5,21.9,19.6,18,15.8,14.4,15.3,16,16.8,18.2,19.4
1962,21,21.7,20.7,20.5,17.9,15.5,16.1,15.3,16,16.4,17.7,19.6
1963,21.1,21.8,21.3,20.1,18.5,16,15.9,16.1,16.2,16.4,18.1,19.6
1964,20.9,21.5,21.4,20.1,16.3,15,14.5,14.7,14.9,16.2,18.1,19.6
1965,21.5,21.5,22.3,21.2,19.2,17.6,15.7,16.7,16.2,17,18.1,19.9
1966,21.4,22.1,21.9,19.8,16.8,16.1,14.4,15,15.4,16.7,18,19.3
1967,20.8,21.9,21.3,21,18.3,15.9,15,14.7,15.4,15.8,17.4,18.6
1968,21,21.4,20.7,18.7,16.7,15.3,15.1,15.2,15.8,16.7,17.6,19.9
1969,21.5,22.1,22.3,20.8,19.7,17.6,15.1,15.4,16.6,17.3,18.7,20
1970,21.3,22.3,22.6,20.2,18.2,16.1,14.4,14.7,15.5,16.2,17.8,18.6
1971,20,21.2,20.6,19.5,17.2,15.8,14,14.9,15.5,16.6,17.9,19.3
1972,21.7,22.6,22.2,19.8,18.5,17,17.5,17.5,17.2,17.4,19,20.9
1973,23.4,23.6,22.1,20.5,18.1,16.3,15.1,14.9,15.2,15.9,17,18.5
1974,20.8,21.9,20.7,19.2,18.1,16.4,15.6,15.3,15.6,16,17.7,19
1975,20.6,22.1,20.4,20,17.7,16.1,14.8,14.9,15.2,16,16.9,19.4
1976,21.6,22,21.5,20.4,19.1,18.2,16.8,16.9,16.5,16.7,18.5,21.5
1977,22.6,23,22.6,21.2,19,17.2,16.4,15.9,16.5,16.5,18.9,19.5
1978,21.5,22.4,22,20.3,18.7,16.3,15.5,15.8,15.9,17.1,19.3,20
1979,21.9,22.3,22.9,20.8,18.5,17.1,16.2,16.5,16.7,17.4,18.4,20.1
1980,22.2,22.9,23.3,22.3,19.5,17.7,16.7,16.1,16.2,17.2,18.2,20
1981,21.5,22.7,22.6,20.9,18.5,16.2,15.7,16.3,16.7,17.2,18.6,19.9
1982,21.7,22.1,21.4,20.2,18.4,17.2,16.2,17.3,17.5,18.3,18.1,22.7
1983,23.7,24.4,24.9,23.1,18.8,19.3,19,17.9,17.5,17.9,19.3,21
1984,22.5,22.4,21.8,20.6,18.5,16.9,15.7,15.8,16.3,17.7,18.9,20.6
1985,22.1,22.2,22.4,20.6,17.3,16.7,15.7,15.6,16.5,17.3,18.7,20.4
1986,21.4,22.7,21.9,19.9,17.9,15.7,15.3,16.1,16.2,17.1,18.5,21
1987,23,23.6,23.4,21.8,19.6,17.5,17,16.4,16.9,18.1,19.2,20.6
1988,22,22.6,22.1,20.7,19,16.1,14.9,15.3,16,16.7,18.3,20
1989,21.5,23.1,22,19.9,17.7,16.7,15.7,15.9,16.4,17.5,18.5,20
1990,21.2,21.9,21.9,20.2,19.1,16.8,15.5,15.2,16.1,16.8,18,20.3
1991,20.8,21.9,22.8,20.6,18.8,17.2,16,16.1,16.8,17.7,18.9,20.7
1992,22.8,23.5,24.7,22.9,20.7,17.6,16.3,16.1,16.7,17.4,19,20.4
1993,22.1,23.2,22.9,21.5,19.8,18.3,16.8,16.7,17,17.4,18.6,19.9
1994,22,22.7,22.3,20.9,19,17,15.9,15.8,16.9,18.2,18.8,20.5
1995,22.7,23.1,22.4,20.1,18.4,17.1,16,15.9,16.8,16.9,17,19.3
1996,21.1,21.9,21.4,19.7,17.6,15.7,15,15.7,16,16.9,18,20
1997,22,22.3,22.6,21.4,20.8,19.9,16.6,15.5,16.3,17.4,18.4,21.4
1998,23,23.9,25,22.8,20,18.5,17.1,16.5,16.7,17.1,18.7,20.1
1999,21.8,23.4,22.3,20.3,18.4,16.1,15.7,15.9,16.4,17.6,18.3,20.1
2000,22.4,22.7,21.6,20.9,18.5,16.9,16.1,16.2,16.5,17.3,17.9,20.4
2001,22.3,23.4,22.8,21.2,18.4,16.5,15,15.6,16.2,16.8,18.3,19.7
2002,21.4,22.8,23.5,21.5,19.3,16.7,15.8,16,16.3,17.6,18.8,20.5
2003,22.5,23.5,23.4,19.8,18.2,16.2,16.1,15.1,16.1,17.6,19.3,20.9
2004,22.5,23.4,22.8,21.5,18,16,15.7,15.9,17.4,17.9,19.1,21
2005,23.1,22.8,22.9,20.8,18.2,16.6,15.9,16,16.6,17,17.2,17.2
2006,22.6,22.4,23.9,20.4,18.2,17.9,17.3,17.4,16.4,17.1,19.4,20.8
2007,23.1,22.5,22.6,20.6,17.9,15.9,15.3,15.3,15.6,16,17.7,19.2
2008,22.7,23.2,23.2,20.4,17.4,16.8,16.6,16.7,17,17.4,19.1,20.7
2009,23.1,23.3,23.4,20.8,19,17.3,16,16.6,17,17.7,19.1,20.5
