1901,20,18.5,20.1,20.7,21.5,22.5,22.8,23.2,22.4,21.9,20.9,20.3
1902,19.8,19,19.4,19.9,20.7,21.8,22.7,23,22.4,21.7,20.7,19.7
1903,19.1,20.6,21,19.9,21,21.7,22.6,22.6,22.5,21.4,20.9,20.6
1904,20.2,19.3,19.6,20.4,21.1,22.1,22.6,22.6,22.8,22.3,20.7,20.4
1905,19,18.8,19.7,20.6,21.4,21.8,22.7,23,22.1,21.6,21.4,20.2
1906,19.6,19.8,19.8,21,21.4,22.5,22.8,23.2,23.2,22.8,21.7,20.7
1907,20.4,20.1,19.2,20,21.7,22.8,23,22.9,23.1,22.3,21.5,21
1908,19.5,19.2,20.1,20,21.1,21.4,22.1,22.4,22.3,21.9,21,20.3
1909,19.3,18.7,18.6,20.2,20.6,21.8,21.9,22.2,22.3,22,21.7,20.6
1910,19.4,18.8,19.4,20,20.3,21.2,22,22.8,22.8,21.4,21.3,20
1911,19,18.9,19.5,20.5,20.9,21.5,22.3,22.9,22.3,21.6,21.1,20
1912,19.8,19.6,18.7,20,20.9,21.6,22.4,23.2,22.7,22.3,21.3,20.9
1913,19.8,19.3,19.8,20.2,21.1,21.9,22.6,23.2,22.7,22.1,21.5,20.4
1914,18.7,19.8,19.6,20.4,21.2,21.8,22.3,23,23.1,22.6,21.7,19.5
1915,19.4,18.5,19.8,20.4,22.2,22.6,22.9,23.5,23.2,22.2,21.5,20.9
1916,19.8,19.3,20.5,21,21.4,21.6,22.1,21.9,22.3,21.8,21.2,20.1
1917,19.5,19.3,19.6,20.1,21.9,22.4,22.5,22.8,22.5,22.8,21.6,21.3
1918,20.4,20.2,20.2,20.5,21.3,22,23,23.5,23.7,23.1,21.9,20.7
1919,19.5,19.9,19.9,21.1,21.4,22.6,22.8,23.3,22.9,22.6,21.9,21.1
1920,20.2,20.3,19.8,20.8,22.4,23,23.5,23.7,23.1,22.5,21.3,21
1921,19.7,20.7,20.3,21.5,22,23,23.1,23.2,22.9,22.4,21.3,20.7
1922,19.4,19.4,19.7,21,21.2,22.2,23.4,23.1,22.9,22.6,21.5,21.3
1923,19.8,19.4,19.8,20.9,21.7,22.1,22.9,23.3,23.6,22.9,21.8,20.6
1924,19.2,20.2,19.6,20.7,21.3,22.3,22.4,22.7,23,22.2,21.6,21.3
1925,20.3,20.6,19.8,20.1,21.1,22.3,22.8,23.2,23,22.6,21.8,21.3
1926,20.6,20.4,20.1,20.3,21.9,22.7,23.6,23.5,23.6,22.9,22.3,21.6
1927,20.6,20.6,20.4,21.1,21.8,22.7,22.7,22.9,23,22.6,22,20.4
1928,19.9,19,20.6,21.2,21.5,22.2,22.6,23,22.8,22.4,21.4,20.4
1929,19.6,19.5,20.4,21.1,21.8,22.6,23.4,23.4,23.5,22.8,21.2,20
1930,19.4,20.3,19.9,20,21.6,22.3,23.2,23.7,23.8,23,22.2,21.5
1931,20.5,20.1,20.5,20.6,21.9,23,22.9,23.5,23,23,21.5,20
1932,20.5,19.6,20.3,20.8,21.3,21.9,22.6,23,22.9,22.6,22,20.9
1933,19.9,19.8,19.8,20,21,21.5,21.9,22,22.1,21.8,20.8,21.3
1934,20.8,20.2,20.2,19.7,21.9,22.8,23.3,23.9,23.6,23,22.4,21.7
1935,20.1,19.7,20.1,20.5,22.1,22.3,23.2,23.3,23.2,23,22,21.6
1936,21,20.5,20.1,20.9,21,22.6,23,23.2,23.3,23.1,21.6,20.3
1937,19.7,19.5,19.5,21.1,21.8,22.9,23,23.3,23.3,23.2,22.2,21.5
1938,21.1,21.4,20.9,21.3,21.6,22.8,23.3,23.6,23.4,23.1,21.8,21
1939,20.4,21.1,20.1,20.7,21.4,21.7,22.4,22.9,22.6,22.3,21,20.8
1940,20.4,20.4,20.6,22,22.5,23.2,23.6,23.8,23.5,23.4,22.4,21.2
1941,20.9,19.8,19.7,21,21.3,22.7,23.2,23.9,23.7,22.8,21.9,20.3
1942,20.2,20.1,18.8,19.9,21.9,22.4,22.9,23.1,23.1,22.7,22.4,22
1943,20.8,20.2,19.6,21.3,21.7,22.7,22.9,22.8,23.1,22.7,21.9,21.3
1944,20.9,19.8,20,21.3,21.5,21.9,22.5,22.4,22.6,21.9,21.7,20.7
1945,20.5,20.8,20.7,21.1,22.7,23.2,22.9,23.7,23.2,22.8,22.2,20.6
1946,20.8,20.2,20.5,20.7,21.6,22.9,23,23.7,23.5,22.7,21.5,19.9
1947,19,19.9,20,21,21.5,22.8,23,23.3,23.1,22.8,21.7,20.2
1948,19.3,19.3,19.7,21,21.8,22.7,23.1,23.6,23.3,22.5,21.2,19.6
1949,19,19.6,19.1,19.7,21.1,21.9,22.2,22.5,22.4,22,20.6,20.4
1950,20.5,20.7,20.5,20.5,21.3,22,22.5,23.2,23,22.6,21.8,20.2
1951,20.4,19.7,20.3,20.8,21.7,22.6,23.3,23.2,23.4,22.8,21.6,20.7
1952,20,20.1,19.8,20.2,20.7,21.7,22.4,23,22.6,22.2,21.5,20.3
1953,20.2,19.9,19.9,21,21.8,22.5,22.7,23.2,22.9,22.3,21.2,20.1
1954,19.8,20,19.5,21.5,21.6,22.9,23.1,23.5,23.2,22.9,22.3,20.4
1955,20.1,20,19.2,20.8,21.4,21.6,21.7,22.2,22.1,21.6,21.3,20.8
1956,21.3,20,20.6,21,21.7,22,22.7,23.3,23.4,23.1,21.9,21
1957,20.6,19.1,19.7,20.7,21.4,22.5,23.4,23.6,23.6,23.1,22.2,21.2
1958,19.7,20,19.7,20.8,21.2,22,22.7,23.9,23.5,22.5,21.7,20.5
1959,20.9,20,20.9,21,21.8,23.4,24,24.7,24.5,23.3,22.9,21.3
1960,20.6,20.5,20.8,21.6,23.1,23.6,24,24.2,24.2,23.7,22.4,21.4
1961,21,21.2,21.8,21.8,23.1,23.4,23.8,24.4,24,23.7,22.6,21.2
1962,20.8,20,20.6,22.1,22.8,23.1,23.3,23.8,23.5,22.6,22.2,20.3
1963,20.2,21.3,21.2,22.3,22.4,22.9,23.6,24.1,23.8,23.3,22,21.4
1964,21.9,21.2,21.1,21.8,21.4,23,23.2,22.9,23.1,21.7,20.7,20.8
1965,20.4,18.4,19,21,22.3,22.9,23.1,23.6,23.7,22.8,22,19.9
1966,19.6,19.4,20.5,20.9,23,24.1,24,24.4,24.4,23.6,22.6,21.9
1967,20.4,20.9,20.8,21.1,23.3,23.4,24.1,23.6,23.6,23.3,21.9,20.5
1968,20.3,20.2,20.7,21.8,22.4,23.7,24.1,25,24.7,24.1,23.4,21
1969,19.2,21,20.7,21.4,22.5,23.7,24.6,24.4,23.6,22.5,22,21
1970,20.5,19.5,20.8,22.2,23.1,23.6,24.1,24.6,23.6,23.6,22.3,21.7
1971,19.7,20.9,21.2,21.7,22.1,23.3,23.6,23.5,24,22.9,22.4,20.9
1972,19.5,19.8,20.7,21.4,22,22.6,23.5,24.1,24,23.6,22.2,20.3
1973,19.9,19.5,21.8,21.2,21.3,22.6,23.5,23.9,23.6,23.3,22.4,21.1
1974,21.9,21.3,21.1,22.8,22.6,23,23.1,24.1,23.7,23.7,22.2,22
1975,20.4,20.8,20.5,21.8,21.2,22,22.6,23.2,22.8,22.5,21.5,20.8
1976,20.3,20.4,20.9,21.7,22.2,22.4,23.7,24.3,24.1,23.6,22.1,22
1977,20.9,21.6,21.9,22,22.6,23,23.6,24.9,24.6,24.1,23.2,21.7
1978,21.7,21.2,22,22.9,24,24.2,24.9,25.2,25.1,24.3,22.7,21.6
1979,20.2,20.5,20.3,21.3,22.7,23.8,24.1,24.8,25.2,24.7,22.8,22.4
1980,21.4,21.4,22.3,22.7,24.4,24.8,25.2,24.7,25.1,24.3,23.6,22.7
1981,22.2,22.1,22,22.7,23.6,24.9,24.8,25.2,24.9,23.6,23,21.9
1982,21.3,20.9,20.9,21.2,22.6,23.9,25,25.4,24.7,24,23.1,21.2
1983,20.5,20.4,20.9,21.6,22.1,23.3,23.6,24,23.6,23,22.5,21.4
1984,21.5,21.4,22.6,23.1,23.9,24.8,24.5,24.3,24.3,24.8,24,21.6
1985,20.6,21.1,19.8,19.8,21.1,22.1,23.3,23.5,23.3,22.8,21.1,20.3
1986,20,20.6,21.5,21.9,22.8,23.3,24.4,25.1,24.5,23.4,23.3,21.2
1987,20.8,19.3,20.5,21,20.8,22.9,24,24.2,24.6,23.7,22.5,21.6
1988,20.5,20.9,21.3,21.7,22.9,23.4,24,24.2,24.1,23.5,23.2,21.4
1989,21,20.5,21.2,20.5,22.4,23.3,24,23.6,23.9,23.3,22,20.5
1990,21.2,20.1,20.5,21.9,22.5,23.6,23.8,24.4,24.9,23.8,22.9,21.2
1991,20.7,21.2,20.7,22,22.7,23,23.9,24.6,24.3,23.8,23.5,22.2
1992,20.7,20.7,21.2,21.8,23,24.1,24.4,25,25.1,24.1,23.3,22.6
1993,20.5,19.5,20.6,22.5,22.8,24.1,24.3,24.9,24.9,23.8,22.6,21.6
1994,20.2,21.6,21.1,21.5,22.9,23.8,24.8,25.3,25.2,24.1,22.9,21.5
1995,20.7,21.1,22,22.1,22.8,24.2,24.8,25,24.8,24.5,23.6,22.8
1996,22.4,21,20.6,23.2,23.9,25,25.3,25.2,25,24.7,23.5,21.4
1997,21.1,21.4,22,22.1,22.6,24.5,24.7,24.9,25.4,24.4,22.4,21.4
1998,20.7,20.7,21.2,21.4,21.8,22.7,23.6,24.2,23.5,23,22.4,20.5
1999,20.3,20,20.9,21.4,22.5,23,23.3,23.6,23.8,22.7,22.1,21
2000,19.8,20.5,21.2,21.4,22.7,23.4,24,24.2,23.5,23.6,22.2,20.7
2001,21.3,20.7,20.9,21.6,22.2,23.1,24,24.3,24.3,23.4,22.5,22
2002,21.2,20.1,20.8,22.2,22.7,23.8,24.1,24.6,24,23.7,22.7,21.8
2003,20.9,20.8,21.8,22,22.9,23.9,24.8,25,24.7,24.3,22.9,21.9
2004,21.2,21.9,21.5,22.3,23.5,24.2,24.9,25.1,25,24.3,23,21.7
2005,21,20.9,21.3,22.8,24.1,24.4,24.9,24.9,24.5,22.9,22.5,21.3
2006,21.1,20,20.9,21.3,21.4,23.5,24,24.2,23.7,23.5,23.2,21.9
2007,21.1,20.4,21.2,22,23,23.9,24.4,24.5,24.3,23.4,22.5,21.7
2008,20.5,20.9,21.9,22.2,22.9,23.7,24.5,24.2,23.7,23.1,22.3,21.4
2009,20.1,20,19.9,20.4,22.8,24.2,24.2,24.1,23.9,24,22.8,21.3
