1901,20.5,21.7,20.4,18.6,17.7,16.4,15.1,15.6,16.3,16.4,17.1,18.7
1902,20.3,20.6,20.6,19.1,17.8,16.2,15.7,14.5,16,16.2,17.5,19.4
1903,21,22.8,20.2,17.9,16.4,15.5,14.9,14.4,16,15.4,16.4,17.5
1904,19.5,20.3,19.5,18.1,16.3,16,14.8,15,15.6,15.6,17.5,18.5
1905,20.2,21.5,19.9,18.4,17.2,16.7,15.3,15,15.5,16.6,17.5,18.5
1906,20.4,21.6,20.7,19.3,17.4,14.9,14.9,14.8,15.8,15.5,17.5,17.9
1907,19.9,20.2,20.9,17.9,16.6,15.6,14.6,14.5,15.7,15.7,17.5,19.1
1908,20.7,20.7,20.5,18.5,17.2,16.5,14.7,14.2,15,14.9,16.9,18.3
1909,20,20.3,20.2,17.9,16.8,14.6,14.3,14.4,15.8,15.8,16.9,18.1
1910,19.4,20.2,19,18.7,16.3,16,14.7,15,15.3,15.4,17.6,18.1
1911,19.7,21.6,19.2,18.7,16.9,15.4,15.2,14.9,15.8,16.2,17.6,19.6
1912,21.6,22.1,21.1,19,17.5,16.4,14.5,14.9,15.4,15.8,16.5,18.7
1913,20.2,21.2,20.2,18.2,16.6,15.6,15.4,14.7,14.9,15.9,17.7,19.1
1914,20.6,22,20.6,18.5,17.8,16.5,15.6,15.4,15.2,15.4,16.9,19.4
1915,21.7,22,21.8,20.3,18.6,15.5,15.1,15.5,15.2,16.2,17.1,19.1
1916,20.6,20.4,19.9,18.2,16.7,14.2,13.4,14,15.5,15.5,16.1,17.8
1917,19.5,19.3,19.8,17.6,15.5,14.9,14.2,14.7,14.7,15.4,16.7,17.5
1918,19.6,20.9,19.6,18,16.8,16.1,15.5,15.6,15.3,16.1,18.8,21.1
1919,21.6,22.5,21.5,19.3,17.8,16.6,15.4,15.2,15.7,16.9,17.7,19.1
1920,20.6,21,20.5,19.3,16.9,15.8,15.3,14.8,15.5,15.8,17.7,19
1921,20.2,20.9,19.9,19.1,17.5,15.1,15.1,15,15.5,15.8,18.1,19.1
1922,20.9,21.8,20.7,19.5,17.5,15.4,16,14.5,16,15.9,18.1,18.7
1923,20.2,21.3,20.7,18.6,17.2,16.5,15.2,15.4,16.6,15.8,18.5,19.2
1924,21.8,21.6,20.9,19,17.4,16.1,15,14.5,15.2,16,17.3,19
1925,20.4,20.5,20.2,19,17.9,16.3,14.7,16.8,15.7,16.9,18.4,20
1926,22.6,22.7,21.4,19.5,17.5,16.6,14.9,15.5,16.6,18.5,20.1,21.1
1927,22.3,22.4,21.9,18.7,17.3,16,14.6,15.5,17,18.5,19.9,21.5
1928,22.6,23.3,21.4,19.2,18.5,16.2,14.8,15.5,16.5,17.3,20.1,21.1
1929,22.7,22.6,21.8,18.9,17.7,16.3,14.5,15.1,16.1,17.3,19.3,20.9
1930,21.6,22,20.9,19.1,17,16.2,15.3,14.6,15.2,17.6,19.2,21.6
1931,20.6,20.5,20.8,19.3,16.6,15.4,14.6,15,16.1,18,20.2,20.5
1932,21.7,21.7,20.9,19.1,18,16.6,16,15.7,16.1,16.8,17.6,19.1
1933,20.2,22,20.7,18.9,17.1,15.7,14.6,14.6,15.7,16.7,17.6,19
1934,21.1,20.7,20.6,18.9,17.5,16.3,15.3,14.5,15.3,17.7,18.9,20.8
1935,21.6,22.2,21.6,18.7,16.1,15.9,15,14.7,16.2,16.3,18.3,19.7
1936,20.7,22.6,20.9,19.2,17.5,15.5,15,14.9,16,17.4,18.6,20
1937,21.7,22.1,20.2,18.4,16.5,15.3,14.8,15,15.4,16.3,18.3,20.3
1938,20.3,21.6,21.3,17.7,15.6,14.6,13.8,13.7,14.6,16.2,18.2,19.1
1939,21.8,21.1,19.9,19.2,18,16.5,15.7,15.7,16.5,17.8,18.7,19.7
1940,21.1,20.9,20.4,19.3,17.8,16.6,15.9,15.9,16.9,18.4,19.3,20.5
1941,22.1,22.6,21.5,21,18.6,16.5,14.8,15.8,16.7,18.2,19.8,21.1
1942,22.2,21.5,19.9,17.8,17.4,15.7,14.1,14.6,15.6,16.5,18.3,19.2
1943,22.3,22,20.8,19.1,17.8,16.5,16.2,15.6,16.2,17,18.4,19.5
1944,21.6,21.9,20.3,19.9,18.2,15.8,15.6,16,16.9,17.2,18.1,20
1945,20,21,20.8,19.9,17.6,16,15.8,15.8,16.7,18,19.3,19.6
1946,21.2,21.5,20.6,18.8,16.6,15.6,14.1,14.5,15.9,16.9,18.5,19.6
1947,21.9,20.6,20.2,20,17.1,15.6,14.5,14.4,15.4,16.5,17.8,19
1948,20.4,20.5,19.5,17.9,17.1,15.6,14.2,15.1,15.5,16.7,18.1,18.8
1949,21.3,21.1,20.2,18.7,15.9,15,13.7,13.6,14.4,15.8,18.2,19
1950,20.1,20.5,19.2,18.1,16.1,14.1,14.7,14.5,16.1,16.8,18.3,20
1951,20.1,20.8,19,17.1,16.8,15.2,15.1,15,15.7,17.5,18.9,19.3
1952,20.9,22,20.7,18,16.3,14.2,13.3,14.4,15.8,16.5,17.5,19.4
1953,20.5,21.6,20.2,18.4,16.3,15,14.6,15.4,16.6,16.3,18.4,18.9
1954,20.2,21.5,20.3,18.4,15.1,14.4,13.3,14,14.8,16.2,18,20.2
1955,20.8,20.5,20.1,18.4,16.3,14.1,13.8,14,14.3,15.1,16.9,18.5
1956,19.3,20.1,19.4,16.5,15.2,14,13.4,14.2,14.8,16,17.2,18
1957,19.7,21.7,20.8,19.2,17.9,16.5,16,15.9,16.4,17.1,19.1,20.2
1958,21.3,22.4,21.5,19.4,17.7,16.2,15,14.9,15.2,16.8,18.5,18.9
1959,19.5,21.2,20.6,18.2,17.1,15.4,14.9,14.9,16,16.9,18.4,20
1960,20.3,20.9,19.7,19,17.1,15.2,14.8,14.9,15.3,15.9,17.9,20
1961,21.4,21.5,21.2,19.1,17.4,15.5,14.2,15.3,15.8,17.6,18.6,20.2
1962,20.6,20.9,20,19.5,17.5,14.7,14.8,15.4,16.5,17.2,18.7,19.8
1963,20.9,21.1,20.8,18.7,18.1,16.1,15.8,15.8,16.4,17.3,18.4,19.8
1964,20.9,21.6,20.6,18.7,15.8,14.2,14.3,14.2,15.8,17,19.1,19.5
1965,20.9,21.3,21.6,19.7,17.5,17.5,16.6,16.3,16,17.3,18.6,20.4
1966,21,20.8,20.7,18,16.5,15.1,14.3,14.2,15.5,17,18.6,19.3
1967,20.7,21.2,20.3,19.6,16.9,15,14.5,14.6,15.1,16.1,17.8,19.4
1968,20.8,21.3,20.1,18.2,15.8,15.1,14.9,15.2,16,17.3,18.1,19.8
1969,20.8,21.2,21.4,19.5,18.5,16.5,15.3,15.5,16.8,18.1,19.7,20.3
1970,20.9,21.5,21.2,20.2,17.3,15.8,13.7,14.6,15.7,16.5,18.8,18.8
1971,20.7,21.1,20,18.9,17.4,15.1,14.1,14.7,15.7,16.6,18.2,18.7
1972,22.3,21.6,20.7,18.4,17.6,16.9,16.5,17,16.7,18.5,19.6,21.2
1973,23.1,23.5,20.8,18.6,16.8,15.3,14.7,15.1,15.2,16.3,18.3,18.5
1974,21.1,21.4,20.3,17.7,17,16.1,14.7,14.4,14.8,15.8,17.9,18.5
1975,20.3,19.6,20,17.7,15.8,14.7,13.6,14,14.6,15.9,17.1,19.9
1976,20,20.2,19.9,18.1,16.7,16,15.9,15.7,15.5,16.8,18.5,20.2
1977,21.5,20.9,21.1,18.6,17,16,15.2,14.6,15.9,17,18.7,19
1978,20.4,21.3,19.9,18.4,16.7,15.2,14.8,15.1,15.4,17,19,19.4
1979,20.8,20.7,19.9,18.6,16.5,16.3,15.7,15.3,16,17,18.2,19.5
1980,21.1,21.6,21.8,19.5,17.5,16,16,15,15.5,16.8,16.6,19.6
1981,20.6,21.1,21,19.4,17.1,15.7,13.9,14.9,15.7,16.4,18,20
1982,21,21.2,19.9,19,17.6,15.5,15.5,15.5,16.8,18.1,18.4,21.1
1983,22.6,22.6,22.8,21,18.9,17.1,17.5,17.2,16.4,17,18.7,20.1
1984,20.6,21,20.4,18.8,17,15.4,14.6,15.6,16,18.2,18.3,19.7
1985,20.3,20.7,21,18.3,16.6,15.8,14.5,14.2,15.8,17.3,18.1,19.5
1986,20.6,20.8,19.9,18.7,17.2,14.7,13.9,14.9,15.7,16.6,18.6,19.9
1987,21.9,22.6,22,19.4,17.2,16.7,15.6,16.3,16,17.2,19.3,20.3
1988,21.1,20.8,20.3,18.8,16.8,14.1,14,14.4,15.4,16.3,17.9,19
1989,19.8,21.4,20.5,18.9,15.9,15.4,14.7,15,15,16.7,18.1,19.1
1990,20.9,20.8,20.5,18,16.5,15.2,14.3,14.5,15.8,16.8,17.8,19.5
1991,20.9,20.4,20.3,18.5,17.1,16.3,15.4,14.5,16.1,16.6,18.4,19.3
1992,21.4,21.1,22,20.6,18.6,16.1,14.6,14.9,15.4,17.3,18.6,19.6
1993,21,21,20.3,19.8,18,16.4,15.4,15.6,15.6,17.1,18.2,19.2
1994,20.4,20.7,20.9,19.1,17.4,15.9,14.7,14.9,16.5,17.3,18.8,20.3
1995,21.3,21.1,20.3,18.9,16.5,15.4,14.4,14.8,15.8,16.7,18.1,18.8
1996,19.9,20.5,19.6,18,16.7,14.9,13.9,14.5,15.3,16.5,18,19.1
1997,20.9,21.3,21.2,19.7,18.6,17.3,16.2,15.9,17.3,18.5,19.6,21.7
1998,22.7,23.8,22.7,20.4,18.2,16.3,16,15.3,15.2,17,18.5,19.4
1999,20.1,20.7,20.6,18.2,16.1,14.9,14.9,15.4,15.5,16.6,17.8,19.2
2000,20.4,20.4,20,19.5,16.6,15.5,14.4,15.1,15.6,17.2,17.7,19.8
2001,20.8,21.8,20.7,19.1,17,15.6,14.7,15.3,15.6,17,18.3,19.9
2002,20.6,21.4,21.2,19.4,17.4,16,14.9,15.4,16.1,17.5,18.6,20.1
2003,21.1,22.3,20.8,18.9,17.4,15.2,14.8,15.3,16,17.8,19.3,19.9
2004,20.9,21,21,18.8,16.5,15.1,14.7,15.3,16.2,17.3,18.7,20.3
2005,21.4,21.2,20.4,19.1,17.2,15.2,14.8,15.1,15.1,15.9,17.7,19.4
2006,21,21.5,20.6,18.1,17,15.9,15.7,15.2,16.7,18.1,18.4,19.8
2007,21.6,21.2,20.4,18.4,15.9,14.6,13.7,13.8,14.7,15.6,17.7,18.4
2008,20.5,20.4,20.1,17.6,15.4,15.4,14.6,14.9,15.7,16.6,18,18.9
2009,20.5,21,20.6,19.6,17.3,15.9,15.6,14.9,15.5,16.8,19.2,20.2
