1901,21.2,22.4,21.4,20,19.3,18,16.9,17.6,18,17.7,18.1,19.7
1902,21,21.3,21.5,20.2,19.4,17.7,17.6,16.8,17.8,17.5,18.6,20.3
1903,21.6,23.4,21.4,19.2,18.2,17.3,16.8,16.4,17.7,16.9,17.5,18.5
1904,20.2,21,20.4,19.3,17.9,17.8,16.6,17,17.3,17,18.5,19.6
1905,21,22.3,20.8,19.8,18.9,18.4,17.3,16.9,17.2,17.8,18.5,19.4
1906,21.1,22.2,21.5,20.4,18.9,16.9,16.8,16.7,17.6,16.7,18.5,18.8
1907,20.6,20.7,21.7,19.2,18.5,17.6,16.5,16.6,17.5,17.1,18.4,20
1908,21.3,21.4,21.4,19.8,18.9,18.2,16.5,16.2,16.8,16.3,17.8,19.3
1909,20.6,21,21.3,19,18.8,16.5,16.3,16.2,17.5,17.1,17.8,19.1
1910,19.9,20.8,19.9,20,18,17.7,16.6,16.8,17,16.7,18.5,19.2
1911,20.2,22.2,20.1,20,18.5,17.3,17.1,17,17.7,17.7,18.5,20.6
1912,22.4,22.6,22,20.3,19.2,18.1,16.5,16.9,17.2,17,17.3,19.5
1913,20.9,21.9,21.2,19.2,18.1,17.3,17,16.5,16.6,17.1,18.6,20.1
1914,21.1,22.7,21.8,19.8,19.4,18.1,17.2,17.3,17.1,16.7,17.8,20.5
1915,22.3,22.5,23,21.4,20.1,17.8,16.9,17.2,17.2,17.4,17.9,19.9
1916,21.1,21,20.7,19.2,18.2,16.4,15.4,15.8,17.1,16.7,16.6,18.6
1917,19.8,19.8,20.9,18.8,17.4,16.7,16.2,16.7,16.2,16.7,17.6,18.1
1918,20.2,21.6,20.4,19,18.6,18,17.4,17.5,17.2,17.4,19.7,22.3
1919,22.4,23.2,22.5,20.3,19.2,18.4,17.2,17.3,17.6,18.2,18.4,19.9
1920,21.1,21.6,21.3,20.4,18.4,17.8,17.6,16.8,17.3,17.2,18.6,20
1921,20.8,21.4,20.9,20.3,19,17.3,17.5,17,17.5,17.1,19.2,19.9
1922,21.7,22.5,21.8,20.9,19.2,17.5,17.9,16.5,17.9,17.4,19.1,19.7
1923,20.9,22,21.7,19.8,19.1,18.3,17.5,17.6,18.5,17.3,19.5,20.3
1924,22.7,22.2,21.9,20.4,19.1,18,17,16.7,17.3,17.5,18.2,19.9
1925,21,21,21,20.2,19.7,18.3,16.8,18.6,17.5,18.4,19.3,21
1926,23.3,23.3,22.4,20.8,19.3,18.5,17,17.6,18.6,19.8,21,22
1927,22.9,23.1,22.9,20.1,19,18,16.7,17.6,19,19.9,20.8,22.4
1928,23.2,23.9,22.4,20.6,20.2,18.2,16.9,17.6,18.6,18.8,21.1,22
1929,23.3,23.3,22.8,20.3,19.4,18.3,16.7,17.2,18.1,18.8,20.3,21.9
1930,22.3,22.7,22,20.5,18.8,18.2,17.3,16.7,17.4,19,20.2,22.5
1931,21.5,21.4,21.9,20.6,18.5,17.4,16.7,17.1,18.2,19.4,21.1,21.5
1932,22.4,22.4,22,20.5,19.8,18.6,18,17.7,18.2,18.3,18.7,20.3
1933,21,22.7,21.8,20.3,18.9,17.7,16.7,16.8,17.8,18.2,18.7,20.2
1934,21.9,21.6,21.7,20.3,19.3,18.3,17.3,16.7,17.5,19.1,19.9,21.8
1935,22.3,22.9,22.6,20.1,18,17.9,17.1,16.8,18.2,17.9,19.4,20.8
1936,21.5,23.3,22,20.5,19.2,17.5,17.1,17,18.1,18.8,19.7,21.1
1937,22.4,22.7,21.6,20.1,18.6,17.7,17.3,17.5,17.8,18.1,19.7,21.5
1938,21.5,22.5,22.4,19.7,18,17.1,16.4,16.4,17.3,17.9,19.5,20.5
1939,22.5,22.1,21.4,20.9,19.8,18.7,17.9,17.7,18.5,19.3,19.8,20.8
1940,22,22.2,21.9,20.8,19.8,18.7,18.1,18,19.1,19.9,20.5,21.5
1941,22.9,23.4,22.8,22.1,20.5,18.5,17.2,18,18.9,19.8,21.1,22.3
1942,23.2,22.9,21.6,19.9,19.5,18.3,16.9,17.4,18.1,18.6,19.9,20.4
1943,23.1,23,22.1,20.6,19.5,18.6,18.3,17.8,18.5,18.8,20,20.8
1944,22.5,22.7,21.5,21.2,19.9,17.7,17.9,18.2,19,18.9,19.4,21.2
1945,21.1,21.9,21.7,21.5,19.8,17.9,17.8,18.1,18.8,19.6,20.5,20.6
1946,22.4,22.8,22.1,20.3,18.6,17.6,16.3,16.7,18,18.4,19.6,20.7
1947,22.9,22,21.8,21.5,19.4,17.6,16.7,16.6,17.6,17.8,18.7,20.1
1948,21,21.4,20.8,19.5,18.9,17.5,16.4,16.9,17.4,18.2,19.1,19.8
1949,22.1,21.7,21.3,19.9,17.7,16.9,15.9,15.9,16.4,17.3,19.2,19.8
1950,20.7,21,20.1,19,17.7,16,16.7,16.4,18,18.1,19.1,20.8
1951,20.7,22.1,19.8,18.3,18.5,17.5,17.6,17.5,17.9,18.9,19.9,20.1
1952,21.5,22.5,21.9,19.2,18.1,16.2,15.5,16.5,18,18,18.4,20.3
1953,21,22.2,21.2,19.8,18.2,17.1,16.7,17.5,18.7,17.8,19.3,19.8
1954,20.9,22.1,20.9,19.2,16.9,16.4,15.4,16,16.7,17.5,18.9,20.9
1955,21.5,21.2,20.9,19.7,17.8,16.2,16,16.1,16.4,16.7,17.9,19.6
1956,20.1,20.7,21.6,17.7,16.9,16.1,15.5,16.3,16.8,17.4,18.2,19
1957,20.3,22.1,21.8,20.7,19.7,18.6,18.1,18.1,18.5,18.7,20.1,21.2
1958,22.1,23.1,22.7,20.8,19.5,18.2,17.3,17,17.3,18.1,19.4,19.9
1959,20.4,21.9,21.7,19.7,18.8,17.5,16.9,16.9,18,18.5,19.5,20.9
1960,21.2,21.7,21,20.2,19,17.4,17,17,17.3,17.6,19,21
1961,22.2,22.3,22.1,20.3,19,17.3,16.1,17.2,17.7,18.9,19.6,21
1962,21.4,21.4,21,20.7,19.2,16.6,16.7,17.3,18.4,18.5,19.6,20.7
1963,21.6,21.9,21.7,20.1,19.7,17.8,17.6,17.6,18.4,18.5,19.3,20.7
1964,21.5,22,21.6,19.9,17.4,16.1,16.2,16.2,17.7,18.3,20,20.5
1965,21.6,21.8,22.5,21,19.2,19.4,18.6,18.5,18,18.6,19.5,21.3
1966,21.6,21.6,21.7,19.2,18.2,17,16.3,16.2,17.4,18.3,19.6,20.3
1967,21.4,22,21.3,21,18.8,16.9,16.5,16.5,17,17.4,18.7,20.2
1968,21.5,22,21.1,19.4,17.4,16.9,16.8,17.1,17.9,18.7,19,20.8
1969,21.4,21.8,22.3,20.8,20.2,18.4,17,17.4,18.8,19.3,20.6,21.2
1970,21.5,22.2,22.2,21.2,19,17.7,15.7,16.5,17.6,17.8,19.7,19.6
1971,21.3,21.6,21,20.1,18.7,16.9,16,16.6,17.7,18,19.2,19.8
1972,22.9,22.4,21.8,19.7,19.1,18.9,18.4,19,18.7,19.7,20.5,22
1973,23.6,24,21.8,20,18.6,17.3,16.8,17.1,17.2,17.7,19.1,19.5
1974,21.7,22.1,21.2,19.2,18.6,17.9,16.8,16.6,17,17.5,19,19.6
1975,21,20.6,21.1,19.2,17.7,16.8,15.8,16.2,16.8,17.4,18.2,21
1976,21.1,21.1,21,19.6,18.6,18.1,17.9,17.8,17.7,18.4,19.5,21.5
1977,22.4,22,22.1,20.3,19.1,18.1,17.3,16.9,18.1,18.6,19.9,20.5
1978,21.3,22.2,21.1,19.8,18.7,17.2,16.9,17.2,17.4,18.5,20.2,20.6
1979,21.7,21.6,21.3,20,18.5,18.3,17.8,17.5,18.2,18.6,19.4,20.6
1980,22,22.6,23,21.4,19.6,18.2,18.2,17.3,17.8,18.4,18.2,20.8
1981,21.4,22,22.3,20.8,19.1,17.8,16.4,17.3,18.1,18.2,19.4,20.9
1982,21.7,22,21.1,20.2,19.5,17.6,17.6,17.7,19,19.7,19.4,22.5
1983,23.5,23.3,24.1,22.7,19,17.3,19.9,19.5,18.7,18.8,20.1,21.3
1984,21.7,21.9,21.7,20.2,18.9,17.6,16.9,17.7,18.2,19.6,19.6,21.1
1985,21.4,21.6,22.1,19.8,18.4,17.8,16.9,16.5,18.1,18.9,19.5,20.9
1986,21.6,21.8,21.2,20.1,18.9,16.8,16.2,17.1,17.9,18.4,19.8,21.2
1987,22.7,23.4,23.2,20.9,19.2,18.7,17.9,18.3,18.2,19,20.4,21.4
1988,21.9,21.6,21.6,20.3,18.7,16.4,16.2,16.5,17.6,17.3,19.2,20.3
1989,20.8,22.4,21.6,20.2,17.9,17.6,16.9,17.1,17.4,18.5,19.4,20.2
1990,21.8,21.6,21.6,19.6,18.5,17.2,16.5,16.7,17.9,18.4,19,20.7
1991,21.3,21.4,21.8,20.1,19.2,17.8,17.5,15.8,17.8,17.6,18.8,20.2
1992,22.2,22,22.6,20.2,18.4,17,16.1,16.3,16.6,18,18.8,20.8
1993,22,21.4,21.4,20.3,18.3,18,16.6,17.8,17.2,18.7,19,20.4
1994,21.3,21.7,21.9,19.9,19.5,17.9,16.2,17.1,18.6,17.8,20,21.4
1995,21.8,22.1,21.5,20.4,18.5,17.6,16.3,17,18,18.2,18.9,20
1996,20.7,21.3,20.9,19.5,18.5,16.9,16.1,16.8,17.6,18.2,19.2,20.3
1997,21.8,22.1,21.8,20.7,19.5,20.2,18.1,17.9,18.3,18.6,19.6,22.2
1998,23.6,24.3,23.9,21.6,19.6,18.3,17.3,16.8,17.4,18.6,19.2,20.2
1999,21.2,21,21.1,19.9,18,16.7,16.4,17.1,17,18,18.4,19.7
2000,19.9,20.9,20.8,19.8,18.2,17.2,16.3,17.3,17,18.5,18.5,20.5
2001,21.2,22,21.4,20.4,18.5,17.6,16.7,17.5,17.6,18.6,19,21.1
2002,21.7,21.9,22.1,20.3,19.4,17.9,16.8,17.7,18,18.8,19.6,21.5
2003,22.4,23.1,22,20.7,19.7,17.8,16.6,17.3,18.1,18.8,19.9,20.8
2004,21.3,22.2,22.7,20.6,18.8,17.9,16.3,17.3,18.1,18.4,19.5,20.8
2005,21.7,22.6,22.2,21,18.8,17,16.6,16.7,17.1,17.5,18.5,19.6
2006,21.2,21.8,21.4,19.3,18.2,17.5,17.3,17,18.7,19.4,19,20.3
2007,22.1,22.1,21.5,19.9,18.2,17.3,15.9,16,17.5,17,18.6,19.1
2008,20.3,20.6,20.7,18.8,17.2,16.9,16.1,16.3,17.1,17.7,18.8,19.6
2009,21.1,21.1,21.3,21,18.4,17,17.7,16.9,17.3,18.2,19.5,20.5
