1901,21.1,20.9,21,20.5,18.5,17,15.4,15.5,16.9,17.7,17.9,19.3
1902,21.4,21.9,21.1,19.2,17.3,16.7,15.1,14.4,15.1,16.3,17.9,20.1
1903,21,22.2,21.3,19.5,18.2,16.9,15.9,15.3,15.8,17.8,18.6,20.6
1904,21.3,21.4,21.1,19.8,17.6,16.1,15.9,15.1,15.2,16,17.6,18.5
1905,21.1,21.5,20.9,19,18.1,16.8,14.8,15.2,15.5,16.1,18.1,20.4
1906,20.9,20.5,20.6,19.6,17.9,16.5,15.6,15.3,16.2,17.1,18.7,20.2
1907,22.3,21.7,22.6,20.4,17.8,17.1,15.5,15.1,15.2,17.3,19.3,21.2
1908,21.7,21.9,21.6,19.9,18.8,16.5,15,15.3,16.1,16,18.5,19.5
1909,21.3,22.1,21.3,19.6,18.4,17.7,16.8,15.9,16.5,17.1,19.2,20.8
1910,22.5,23.3,22.8,20.1,18.9,17.7,16.4,16,16.4,18,19.3,20.6
1911,21.7,22.2,21.9,20.2,18.4,16.9,15.7,15.6,15.9,17.1,18.6,20
1912,21.2,21.6,21.1,19.8,17.6,16.7,15.5,15.3,16,17,18.8,20.3
1913,21.6,21.9,21.8,19.7,18.1,16.4,15.7,15.7,16.1,17.4,18.6,19.5
1914,22.1,21.7,21.6,20.1,17.9,16.5,15.5,15.4,16,17.1,19,20.1
1915,23.3,24.1,22.1,20.8,18.8,17.6,17.1,16.9,16.7,18.7,20.4,21.6
1916,22,23.4,22.9,21.4,18.8,18.3,16.8,16.4,17.2,19,20.1,21.6
1917,22.3,22.3,20.9,20.8,18.6,17,16.2,16.3,17.6,18.7,19.6,20.5
1918,22.3,22.2,21.3,20.5,18,17.1,15.1,15.4,16.2,18.3,19.6,19.9
1919,21.6,22.5,21.5,19.9,18.4,16.5,15.9,15.6,16.4,18,18.3,20
1920,22.2,22.3,21.7,20,17.8,17,16.5,15.7,16.1,18.5,20.1,20.6
1921,22.3,22.3,21.7,20.2,18.7,17.4,16.7,16.2,16.7,17.7,18.7,21.1
1922,22.2,21.5,21.7,19.9,18.4,17.3,16.4,16.6,16,18.3,19.3,21.2
1923,21.4,21.6,21.2,19.3,18.5,17,15.4,15,16,17.1,18.7,21
1924,21.5,22,21.7,20.5,18.1,16.8,15.7,15.7,16.1,17.3,18.7,19.6
1925,21.3,21.6,21,19.5,18.2,16.8,15.5,15.3,15.5,17,18.4,20.1
1926,21.5,21.7,21.6,20.2,18.4,16.7,15.7,15.6,15.6,17.5,18.3,19.7
1927,22.7,22.3,22,21,18.8,16.2,16.6,16.6,16.8,16.9,18.6,20.5
1928,21.3,22.4,21.9,20.6,18.3,16.8,16,15.8,16.4,17.5,19,20
1929,23.4,23.2,23,20.3,17.8,17.8,15.6,16,15.9,18.3,19.3,21.4
1930,22.6,21.6,20.8,20,17.8,17.5,15.8,16.2,15.7,17.6,18.9,20.7
1931,21.8,22.4,21.8,21.1,18.9,16.8,16.9,16.1,16.2,17.7,20.7,21.6
1932,22,22.3,22.1,21.5,17.7,16.8,15.7,15.8,17,18.5,19.6,21
1933,23.2,22.9,23,20.7,18.9,17,16.5,15.8,16.5,18.1,19,21.7
1934,20.9,21.6,21.6,20.7,17.9,17,15.4,16.1,16.5,17.4,19.5,21.7
1935,23.6,23.7,22.3,20.3,17.9,16.8,16,15.7,15.9,17.8,17.2,21.4
1936,22.8,22.2,21.2,20,18.4,17.2,15.4,15.7,15.5,18,18.7,20.5
1937,21.8,22,21.6,19.4,18.1,16.7,15,15.7,15.7,17.8,19.6,21.7
1938,22.5,23.5,22.8,20.5,19,17.3,16.1,15.9,16.2,17.7,20.5,21
1939,22.3,21.6,22.4,21,18.7,18,15.2,15.3,15.1,16.3,18,19.4
1940,20.8,21,20.6,18.4,17.8,15.4,14.3,14.6,15,16.7,18,20.2
1941,21.6,21.1,21.1,18.4,17.5,16,15.3,14.8,16.1,16.4,17.5,20
1942,20.6,20.5,22.1,20,17.7,16.9,16.4,15.7,16.4,18.4,18.7,20
1943,21.3,22,20.8,19.6,17.4,16.4,15.3,15.2,15.8,17.1,18.3,21.5
1944,22.6,22.3,21.4,19.9,18.1,15.6,15.7,15.4,15.2,16.7,18.8,20.7
1945,21.7,21.4,21.1,19.8,17.3,16.5,15.4,16.3,15.5,16.3,18.6,19.6
1946,21.8,22.8,22.1,20.5,18.6,17.2,15.7,15.6,16,16.5,18.1,19.8
1947,20.8,21.3,21.1,19.4,17.7,16.6,15,15.5,16,17,18,20
1948,22.1,21.5,22.4,20.4,17.9,16.2,16.6,15.8,17.1,17.5,18.5,20.4
1949,20.8,22.5,22.3,19,17.7,17,16.4,14.9,15.9,18.1,18.4,20.6
1950,22.2,22.2,21.6,20.2,19.4,18,16.1,16.1,16.1,17.2,19.2,20.8
1951,21.3,21.2,21.2,19.6,17.2,16,15.2,15.3,15.6,17.5,18.8,19.8
1952,21.1,21.6,21.7,20.3,18.4,17.3,15.2,15.4,15.2,17.8,18.4,19.1
1953,19.9,21.6,21.3,19.6,18.7,17.1,14.7,16.2,15.9,17.3,20.1,22.3
1954,22.9,22.7,22,19.9,18.4,17.1,16.2,15.2,16.1,16.7,19.3,21.3
1955,21.4,23.2,23,21.1,19.7,17.8,15.1,16.1,16.6,17.8,18.9,21
1956,22.3,22.3,22.2,21.1,19,17.5,15.2,15.1,15.2,17,18.3,20.8
1957,21.6,22.3,21.6,19.9,17.3,15.6,15,16.1,15.2,16.6,19.1,20.2
1958,21.8,22.9,22.4,19.3,18.4,17.4,15.6,16.4,15.9,17.1,18.3,21
1959,22.5,21.6,20.9,19.5,16.9,16,15.7,15.8,16.8,16.8,19.5,21.6
1960,21.9,22.2,21,19.2,18.8,18.7,15.5,15.4,16.5,17.4,18.4,19.3
1961,20.4,21.6,21.1,19.8,17.3,16.8,16.1,15.6,15.5,17.6,19.4,20.7
1962,22.7,22.6,21.6,20.4,19.2,17,15.8,15.8,16.2,17.8,18.2,20
1963,21.8,22.7,22.1,19.5,18.5,16.7,15.8,15.7,16.1,17.1,18.3,20
1964,22.2,21.9,22.2,20.2,17.8,17.5,16.5,16.2,15.9,17,18,20
1965,21.4,21.2,20.3,20,17.4,16.1,14.8,14.9,16,17,18.5,20
1966,21.2,23,21.7,19.8,17,16.3,15.3,15.2,16,16.7,18,19.7
1967,21.1,21.8,21.8,20.1,18.2,17.1,16.3,16.5,16,18.1,18.9,20.1
1968,21.9,21.6,22.4,20.1,18.7,16.3,15.1,15.6,15,17.1,19,19.4
1969,21.3,21.3,20.6,19.4,18.1,16.7,15,15.4,16.2,16.4,18.9,20.5
1970,22.9,22.2,22.1,20.1,18,16.9,15.8,16.5,16.5,18,19.2,20.9
1971,22.9,23,21.2,19.8,18.6,17.3,15.5,16.3,16.7,18.1,18.2,19.8
1972,20.9,21.1,22.6,19.9,17.9,16.1,15.2,15.4,15.9,18.4,20,19.9
1973,22.2,22.1,22.3,20.1,19.1,18.1,16.4,16.7,16.8,18.2,20.3,21.5
1974,22.1,23.2,22,20.4,18.6,17.3,16.4,15.5,15.9,17,19.2,20.8
1975,21.7,22.6,22.9,20.3,18.7,17.2,15.8,16.4,16.4,18,19.3,21.5
1976,22.5,20.9,22.3,20,17.7,16.5,15.4,16,15.4,16.9,18.1,20.4
1977,20.6,21.7,21.7,19.8,18.2,16.4,15.7,15.6,14.5,17,19.3,19.8
1978,21.2,21.9,21.7,20.2,18.1,17.4,15.8,15.7,15.9,16.1,18.9,20.3
1979,22.1,21.1,22,20.2,18.3,17.4,15.7,15.3,15.8,16.8,19.2,21.1
1980,22.5,22.3,20.4,19.5,18.4,17,15.8,15.3,16.3,17.4,18.1,19.7
1981,22,23.5,23.2,20.5,18.7,17.5,16,15.5,15.6,16.7,17.8,21.3
1982,22.4,22.4,21.7,19.3,18,16.4,15.4,15,16.1,16.8,19,20.4
1983,21.2,21.7,22.1,21,19.1,17.4,15.2,15.7,16.8,17.9,19,19.9
1984,21.1,21.6,21.9,19.5,18.3,17.3,16.5,16.7,16.4,16.9,19.9,21.2
1985,22.5,21.9,21.4,20.7,17.8,17.2,15.9,15.8,16.5,17.4,18.4,20.7
1986,22.8,22.3,21.8,20.5,19.3,16.7,15.7,15.7,15.4,17.8,19,19.8
1987,21.5,21.7,21,19.7,18.9,16.8,15.6,16.5,16.5,17.9,18.3,20.4
1988,21.7,22.2,21.8,20.2,19.3,18.1,16.7,16.5,17.4,18.6,20.1,21.2
1989,22.3,22.1,21.8,21,18.4,17.8,16.3,16,16.6,17.9,19.2,20
1990,22,23.3,23,21,19,16.8,16.2,16.4,15.7,17.6,19,21.6
1991,22.5,22.4,21.3,19.6,17.6,16.7,16.2,16.1,16.7,17.3,17.5,20.1
1992,21.7,22.6,21.4,19.2,17.9,16.9,15.5,15.6,15.9,16.4,18.8,20.2
1993,21.9,21.4,21.1,19.1,17.9,16.6,16.7,16.1,16.2,17.4,18.2,19.9
1994,23.2,22,20.7,19.3,18.3,16.5,15.1,15.4,15.7,17.1,19,20.5
1995,22.2,22,21.9,20.8,18.7,16.4,15.9,15.3,17.1,18.2,20.2,21.7
1996,22.7,23.6,21.9,21.1,18.5,17,16.6,17,17.5,18.1,18.8,20.7
1997,20.9,21,20.9,18.6,18.2,16.4,14.9,14.8,16.3,16.7,19,21.9
1998,22.1,23.3,22.5,20.6,19.4,18.1,17,16.5,17,18.6,19.2,20.3
1999,22.2,22.8,22.3,20.5,19.4,17.2,16.4,15.6,16.4,18.1,18.2,19.1
2000,21.1,21.1,20.7,19.6,18.4,16.3,16.5,16,16.6,17.4,18.2,20.4
2001,21.2,21.8,22.3,20.1,18.5,16.2,15.8,16.1,16.4,18.1,19.2,20.9
2002,21.7,21.7,21.3,19.5,17.9,17.1,15.4,15.3,16.3,17.1,17.9,19.9
2003,20.8,21.4,21,19.7,18.3,17.5,15.6,15,16,17.2,18.1,20.7
2004,22.3,22.8,21.3,19.1,18.4,16.9,15.4,15,15.6,17.6,18.6,20.1
2005,21.3,21.8,21.3,19.7,18.5,16.7,16.2,15.6,16.3,17.4,18.4,21.2
2006,21.7,21.8,21.1,20.5,18.1,15.9,15.2,15.3,16,16.7,18.9,18.8
2007,20.7,21.2,21.7,19.5,18.7,17.6,16.2,16.2,16.5,17.8,18.6,20.5
2008,21.7,21.7,21.4,20.1,17.4,16.9,16.2,15.7,15.9,16.9,18.7,19.9
2009,21.1,22.8,21.8,20.5,17.4,16.9,15.8,16.3,16.7,16.9,18.6,20.8
