1901,20,20,20,20.6,22,22.4,22.2,22.7,22.3,21.8,21.4,20.6
1902,19.9,20.1,19.5,20.1,21.4,22.2,22.4,22.6,22,21.6,21.2,20.7
1903,20.3,19.7,19.6,20.3,22.2,22.9,22.5,22.5,22,21.8,21.3,20.4
1904,19.9,19.3,19.4,19.6,21.6,22.3,22.1,21.9,21.7,21.4,21.5,20.6
1905,19.9,19.2,19.5,20.5,21.5,22.5,22.2,22.5,22,21.7,21.7,20.6
1906,19.7,19.4,19.7,20.1,21.7,22.2,22.3,22.7,22,21.9,21.6,19.9
1907,19.3,18.7,19,19.3,21.2,22.3,22.7,22.4,22.1,21.8,21.6,20.7
1908,20,19.5,19.4,19.9,21.3,22.5,22.6,22.8,22.3,21.9,21.6,20.9
1909,19.9,19.6,19.9,19.8,21.7,22,22.4,22.1,22.2,21.9,21.4,20
1910,19.6,19.1,19.5,19.6,20.9,22.3,22.4,22.6,22.9,21.7,21.4,20.9
1911,19.7,19.2,19.1,19.3,20.9,22.3,22.3,22.7,22.2,22,21.7,20.6
1912,20.2,19.7,19.9,19.9,21.6,22.3,22.5,22.5,22.2,21.8,21.5,20.7
1913,19.7,18.9,19.2,19.6,22.1,21.5,21.9,21.7,21.7,22.2,21,20
1914,19.7,19.2,19.6,19.6,21.2,21.9,21.9,21.8,22,21.6,21.4,20.8
1915,20,19.2,19.6,20,21.3,22.5,22.8,22.7,22.4,22.1,21.7,20.9
1916,20,19.4,19.3,19.6,21.6,22.2,22.2,22.3,21.8,21.5,21.2,19.8
1917,19.1,18.6,18.9,19.5,21,22.3,22.2,22.2,21.8,22.2,21.5,19.9
1918,19,19,18.8,19.4,21,22,22.1,22.4,22,21.2,20.9,19.7
1919,19.2,19,19.1,19.9,21.7,22.3,21.8,22.4,21.8,21.4,20.7,20.2
1920,19.6,19.4,19.5,19.7,21.5,21.8,21.9,21.9,21.7,21.3,21.1,20
1921,19.7,19.4,19.3,19.2,21.5,22.5,21.8,22.2,22,21.7,21.2,20.1
1922,19.5,19.5,19,20.6,21.1,21.9,22,22,22.1,21.6,21.1,20.2
1923,19.1,18.9,19,19.5,21.7,21.6,21.9,22.2,21.9,21.6,21.1,19.8
1924,19.5,19.1,19.9,20.4,21.6,22.1,22.2,22.4,22,21.6,21.5,20.4
1925,19.4,18.8,19.2,19.6,21.8,21.7,22.1,22.5,22.2,21.9,20.8,20.5
1926,19.9,19,19.9,19.9,21.6,22.3,22.4,22.5,22.1,21.8,21.7,20.2
1927,19.6,18.6,19.1,19.4,21.1,21.9,22.3,22.2,22.1,21.6,21.4,20.1
1928,19.4,18.7,19,19.5,21.4,22.2,22.2,22.5,21.9,21.5,21.5,20.4
1929,19.5,19.2,19.5,19.5,20.7,22,22.2,22.3,21.8,21.5,20.9,20
1930,19.3,19,19.4,19.8,21.8,22.3,22.3,22.6,22,21.8,21.5,20.4
1931,19.7,19.6,20.9,21.1,23.1,23.3,23,23,22.5,22.1,21.8,20.7
1932,19.7,18.5,20,20.7,22,23,22.5,22.9,22.7,22.2,21.7,20.6
1933,19.3,18.9,19.6,19.9,21.8,22.7,22.5,22.6,22.1,21.9,21.6,20.3
1934,19.4,19,19.3,20.2,21.7,22.3,22,22.3,22.2,21.8,20.8,20.6
1935,19.4,19.9,19.7,20.6,21.2,23.1,22.4,22.3,21.9,21.7,21.9,20.3
1936,20.1,20,20.1,20.7,22.4,22.9,22.6,22.7,22.5,21.8,21.2,20
1937,19.7,19.1,19.8,20.5,22.4,23.2,22.7,22.9,23.1,22.1,21.9,20.7
1938,19.8,19,19.7,19.8,21.8,22.3,22.3,22.5,22.1,22.2,20.9,20.5
1939,19.4,18.6,20.2,19.8,21.3,21.7,22,22.6,22.4,22.6,22.1,21.2
1940,20.1,20.2,20.4,21.3,22.9,23,22.7,22.9,22.6,22.5,22.2,21.2
1941,20.4,20.9,20.8,21,22.5,22.7,22.5,23.1,22.3,22.3,22.2,21.4
1942,20.9,20.5,21.2,21.7,22.3,23.2,22.9,23,22.7,22.3,22.4,21.4
1943,20.4,19.8,19.8,20.8,21.5,22.4,22.7,22.7,22.7,22.4,22,21
1944,20.2,19.6,19.9,20.8,21.4,22.5,22.9,23.2,22.3,22.1,21.8,20.8
1945,19.5,19.4,19.6,20,21.2,22.7,22.8,22.9,22.1,21.9,21.4,21
1946,20.2,19.2,19.8,20,21.3,22.1,22.5,22.8,22,22.3,21.9,21
1947,19.9,20,20.4,20.6,21.5,22.4,22.5,23,22.8,23.3,22.5,21.4
1948,20.7,20.4,20.5,20.8,23,23.3,22.9,23,22.6,22.3,21.8,20.6
1949,19.5,19.5,19.8,20.7,22.4,22.6,22.4,23.4,22.6,22.1,21.7,20.3
1950,19.4,19.6,19.8,20.5,21.5,22.6,22.8,23,22.9,22.5,22.3,20.9
1951,19.2,19,18.7,20.4,22.1,22.4,22.2,22.5,22.4,22,21.8,20.6
1952,19.1,19.1,18.9,20.6,21.5,22.3,22,22.6,21.9,22.3,21.1,19.3
1953,19.1,19.2,19.6,20,21.8,22.5,23,22.5,22.3,21.2,21.1,20.4
1954,18.9,18.9,19.6,20.3,21.3,22.6,22.3,22.3,22.2,21.6,20.6,19.8
1955,18.5,19.9,18.5,19.1,21.5,22.4,21.8,22.8,22.4,21.9,21.8,20.6
1956,19.7,19.9,20.4,20.6,21.2,22.5,21.9,22.2,22,21.5,21,20.9
1957,19.6,20.2,18.8,19.6,21.1,22.8,23.1,22.8,22.4,21.5,21.8,21.1
1958,19.5,18.8,20.3,21.8,22.7,22.9,23.2,23.2,22.9,22.2,21.5,20.9
1959,18,20.2,20.9,21.2,21.2,21.5,22.1,22.3,22.2,22.1,20.7,21
1960,19.5,19.2,19.7,20.2,21.6,22.9,22.2,22.4,21.2,21.8,20.9,19.8
1961,19.9,19.6,19.4,20,21.6,22.3,22.3,22.6,22.7,21.8,21,21.2
1962,20.7,19.1,19.6,20.2,20.5,22.7,22.9,22.7,22.7,22.1,21.2,20.5
1963,20,19.6,20.1,20.5,21.3,22.6,23,23.2,22.9,21.9,21.4,21
1964,19.4,20.6,20.2,20.5,21.4,22.7,23,22.7,22.7,22.1,21.3,19
1965,19.2,19.5,20.6,19.6,21.9,22.3,23,22.8,22.4,22.1,22,21
1966,20.3,20.9,20.8,20.9,22.4,23.1,23.5,23.4,22.7,22.8,22.3,21.1
1967,20.9,20.5,19.6,20.2,22.2,22.8,23.3,22.9,22.8,22.3,21.9,19.9
1968,19.5,19.1,19.2,19.5,21.4,22.2,22.3,23,22.7,22,21.5,20.2
1969,19.5,18.5,20.3,21.3,22.7,22.9,22.4,22.6,22.3,21.8,22,20.3
1970,20.1,19.7,19.7,21,21.9,22.6,22.9,22.5,22.2,21.9,21.3,21.3
1971,19.7,18.9,19.3,20.3,21,22.4,22.4,22.3,21.9,21.6,21.2,19.3
1972,19.9,19.4,20.1,20.5,21.3,22.6,23.2,22.6,22.2,21.9,21.4,20.4
1973,20.5,19.1,20.6,20.7,22,22.9,22.8,23.1,22.3,22.2,21.2,19.4
1974,20.6,19.8,20,20.2,20.7,22.3,22.2,22.4,21.8,21.7,21.9,19.4
1975,19.5,19.3,19.7,19.7,21.2,22.3,22.2,22.3,22.2,21.6,20.9,20.2
1976,19.3,19.4,19.3,20.1,21.4,22.1,22.6,22.7,22.4,22,21.9,20.5
1977,19.5,19.8,20.4,20.6,21.9,23.1,22.7,22.7,22.2,22.2,22,20.8
1978,19,19.9,20.4,21.1,22.1,22.9,23,23.3,22.7,22.4,21.9,20.9
1979,19,20.2,20.4,21.3,22.5,23.8,23.5,23.6,23,23.1,22.3,21.6
1980,20.6,20.9,20.2,21.4,23.7,24,23.8,23.9,23.7,23.2,22.4,21.6
1981,20.8,20.9,21.2,22.3,23.6,23.6,22.9,23.3,22.7,22.4,22.4,22.1
1982,20.4,21.1,20.2,21.1,22.6,23.4,23.2,22.9,22.5,21.9,21.8,20.9
1983,21.3,20.4,22.1,21.3,23.7,24.4,24.3,23.9,23.8,22.9,21.9,21.2
1984,20.6,20.6,20.8,21.1,22.1,22.9,23.1,23.6,23.1,22.1,22.4,21
1985,19.7,20.2,20.3,20.7,22.5,23.4,23.5,23.7,23.3,22.6,22.4,21.9
1986,20.6,18.9,20.7,21.9,22.3,23.6,22.9,23.7,23.2,22.5,22.1,21.3
1987,20.3,19.8,20.7,22.9,22.9,23.6,24,23.9,23.3,23.4,23,22.4
1988,21.3,20.9,20.9,21.5,22.9,23.8,24.1,23.4,22.9,23,22.5,20.8
1989,20.5,21,20.4,21.1,21.7,23.3,23.6,23.2,23.6,23.1,21,21.8
1990,21.9,19.8,20.3,21.5,23.1,23.9,23.7,23.9,23.5,23.5,23,21.1
1991,21.9,21.7,21.9,21.8,22.5,24.3,23.9,24.1,23.7,22.6,22.5,20.4
1992,21.4,21.6,21.3,22.5,23.8,24.2,23.8,23.6,23.1,22.7,22.7,21.6
1993,21.8,20.4,21.4,22.3,23.3,24.2,23.7,23.8,23.4,23.2,22.5,21.4
1994,20.4,20.6,20.1,21.2,23,23.5,23.4,23.9,23.2,22.8,22.6,21.8
1995,19.9,20.9,21.5,21.7,23,23.9,24.7,24.2,23.9,23.5,23.1,21.6
1996,21.2,21,21.5,21.7,22.7,23.6,24.1,23.9,23.9,23.6,22.9,21.3
1997,21,22.2,20.9,21,23.1,24.4,24.2,24.2,24.3,24.1,23.4,22.8
1998,22.3,22.3,22.7,23,24.1,24.6,24.2,24.8,24.5,23.9,23.3,22.7
1999,21.4,20,21.2,21.9,23.3,24.2,24,24.1,24,23.8,23.4,21.9
2000,21.7,21.2,20.5,22.2,22.9,24,24.2,24.1,23.6,23.2,23.2,22.5
2001,21.2,20.7,21.3,21.7,24.3,24.4,24.3,24.6,24,23.9,22.7,23.3
2002,22.4,20.5,21.8,22.1,23.4,24.4,24.2,24,23.9,23.2,22.9,22.3
2003,21.7,22.3,20.7,22.9,23.5,23.4,24,23.8,23.7,23.2,23.2,22
2004,20.8,20.5,21.2,21.9,22.2,23.4,23.5,23.7,23.3,22.8,22,21.2
2005,20.7,19.9,21.5,22.7,23.3,23.5,23.5,23.8,23.8,23,22.2,21.3
2006,20.7,20.5,20.5,21.5,22.9,23.5,23.3,23.4,23,22.8,22,21.3
2007,20.4,20.7,21.4,21.9,23.2,23.9,23.7,23.2,22.5,22.1,22,21.3
2008,19.8,20,19.5,20.5,21.8,23,23.1,23.8,22.5,22.1,21.7,20.5
2009,20.8,20.1,19.7,20.3,21.8,23,23.6,23.9,23,22.9,22.4,21.5
