1901,21,19.6,20.5,20.9,21.9,22.9,23.1,23.5,22.9,22.2,21.3,21.1
1902,20.8,20,19.8,20.2,21.1,22.3,23,23.3,22.9,22.1,21.1,20.5
1903,20.2,21.4,21.3,20.2,21.4,22.2,22.9,22.9,22.9,21.9,21.3,21.3
1904,21.1,20.2,20.1,20.6,21.5,22.5,22.9,22.9,23.2,22.6,21.1,21.1
1905,20.4,19.6,20.8,21.7,22.7,22.6,23.6,24,22.7,22,21.8,21
1906,20.9,20.8,19.9,21.4,22,23.1,23.4,23.9,23.9,23.4,22.2,21.5
1907,21.3,20.6,19.7,20.4,22.3,23.5,23.6,23.5,23.7,22.8,22.1,21.4
1908,19.9,19.4,20.7,20.1,21.2,21.8,22.6,23.1,22.9,22.2,21.5,21
1909,20.1,19.5,19,20.8,20.8,22.4,22.6,22.9,23,22.6,22.4,21.6
1910,20.6,19.4,19.5,20.3,20.6,21.8,22.5,23.9,23.8,21.9,21.6,20.8
1911,19.7,19.7,19.9,20.8,21.2,22.1,22.9,23.5,23,22.2,21.2,20.3
1912,20.5,20.5,19.2,20.1,21,22,22.7,23.9,23.1,22.5,21.6,21.2
1913,20.3,20.3,20.2,20.4,21.4,22.4,22.8,23.7,22.9,22,21.8,21.1
1914,19.6,20.6,20.4,20.8,21.7,22.1,22.1,23.2,23.7,23.3,22.4,20
1915,20.3,19.1,20.4,20.8,22.7,23.1,23.3,24,23.8,22.4,22.2,21.5
1916,20.8,19.1,21,21.3,21.8,22.1,22.5,22.3,22.8,22,21.2,20.5
1917,20.4,20.4,19.8,19.9,22.6,23.1,23,23.1,22.7,23.4,22.1,22.2
1918,21.6,21.4,21.1,21.4,21.7,22.6,23.6,24.4,24.6,23.6,22.5,21.2
1919,20.2,20.3,20.5,21.5,21.8,23.3,23.4,23.8,23.6,23,22.1,21.8
1920,21.2,20.9,20.2,21.2,23.3,23.9,24.3,24.4,23.5,22.5,21.7,21.6
1921,20.6,21.6,21,22.2,22.6,23.5,23.8,23.9,23.5,23.1,21.7,21.4
1922,20.1,20,20.2,21.3,21.8,22.9,24.2,23.9,23.8,23.3,22.1,22.1
1923,20.6,20.5,20.5,21.5,22.3,22.7,23.6,24.1,24.4,23.4,22.1,21.2
1924,19.9,21.2,20,21.3,21.8,23,23,23.3,23.7,22.7,22.2,22.2
1925,20.9,21.4,20.2,20.4,21.7,23,23.5,23.8,23.7,23.3,22.3,22
1926,21.5,21.3,20.5,20.9,22.4,23.7,24.2,24.1,24.5,23.5,22.9,22
1927,21.3,21.6,20.9,21.7,22.5,23.5,23.4,23.4,23.7,22.9,22.5,21
1928,20.6,19.4,21.3,21.6,22.1,22.8,23.1,23.7,23.5,22.8,21.9,20.5
1929,20.4,20,21,21.3,22.5,23.3,23.8,24.1,24.2,23.1,21.6,20.5
1930,20.3,20.9,20.7,20.3,22,23,23.8,24.4,24.7,23.5,22.8,22.2
1931,21.4,20.9,21.4,21.3,22.7,23.9,23.5,24.3,23.9,23.7,21.9,20.8
1932,21.1,20.9,21.1,21.4,21.8,22.7,23.5,24,24,23.2,22.6,21.3
1933,20.4,20.6,20.5,20.4,21.6,22.3,22.8,22.8,22.9,22.5,21.5,22.1
1934,21.5,21.2,20.9,20.4,22.6,23.5,23.9,24.7,24.4,23.6,23,22.3
1935,21.3,20.4,20.8,21,22.7,22.6,23.8,24,24,23.8,22.7,22.3
1936,21.8,21.8,20.8,21.7,21.7,23.5,23.7,23.9,24,23.9,22.2,20.8
1937,20.5,20.6,20.2,21.6,22.8,24,23.9,24.6,24.5,24,22.9,22.5
1938,22.3,22.6,21.6,21.8,22.3,23.9,24.2,24.7,24.2,23.9,22.4,21.5
1939,21.2,22.3,20.5,21.4,22.1,22.5,23.1,23.7,23.4,22.9,21.4,21.4
1940,21.7,21.2,21.4,22.5,23.3,23.8,24.1,24.5,24.3,24,22.7,21.8
1941,21.8,20.9,20.2,21,21.7,23.4,23.7,24.8,24.2,23.4,22.3,20.6
1942,21.1,20.9,19.4,20.2,22.2,22.8,23.2,23.4,23.5,23,22.6,22.5
1943,21.7,21,20.1,21.4,22,23.1,23.3,23.2,23.5,23,22.2,21.9
1944,21.8,20.7,20.4,21.4,21.8,22.4,22.9,22.8,23.1,22.3,22,21.4
1945,21.4,21.6,21,21.3,22.9,23.5,23.3,23.9,23.6,23.1,22.5,21.3
1946,21.7,21,20.9,20.8,22.1,23.3,23.6,24.1,24.1,23.3,22.1,20.9
1947,20.3,21,20.5,21.4,21.9,23,23,23.4,23.7,23,21.9,20.8
1948,20.3,20.6,20.2,21.5,22.2,23.1,23.5,24.1,23.7,22.7,21.5,20.3
1949,20.2,20.2,19.4,19.9,21.5,22.6,22.7,23.2,23,22.4,21,20.3
1950,21.8,21.1,21.2,20.5,21.7,22.2,23.3,24,24,23.1,22.7,20.6
1951,21,20.1,20.8,21.5,22.6,23.7,24.4,24,24.7,23.4,21.4,20.9
1952,19.7,20.5,19.4,20.3,21.1,22.2,22.7,23.7,23.4,23.2,21.9,21
1953,22.2,20.2,20.1,21.3,22.2,22.8,23.3,23.9,23.8,22.5,21.2,20.6
1954,21,20.9,20.2,22.3,21.5,23.4,23.7,23.8,23.9,23.2,23.3,19.5
1955,20,19,19.8,20.8,20.8,21.7,22.2,22.7,23,22.2,21.6,21.5
1956,21.7,19.8,20.8,21.8,21.3,22.6,23.5,23.4,23.5,23,22.3,21.6
1957,20.1,19.3,20.5,20.8,22,24.2,24,24.1,24.9,23.9,22,20
1958,21.5,21.3,20.2,21.3,21.7,23.5,24.1,24.6,24.2,23.1,22.4,21.5
1959,21.5,20.8,21.7,22.1,22.8,24.3,24.9,25,23.9,23.7,22.3,20
1960,20.2,20.9,21.2,21,22.5,23.4,24.3,23.8,24.1,23.7,21.3,21.8
1961,21.9,20.9,21.7,22.2,22.6,24.1,24,24.2,24.3,23.8,22.2,20.7
1962,22.2,21.8,20.6,22.6,22.2,23.7,23.2,24.5,23.3,23.7,22.4,21.7
1963,21.9,23.2,21.5,22.5,22.4,23.5,23.9,24.1,24.6,23.5,23,23.1
1964,21.4,20.2,20.7,21.3,21.3,23.9,24.1,24.1,23.7,22.5,22.2,22.9
1965,21.7,19.9,20.8,22.2,23.4,23.3,24.4,24.5,25.7,24.2,22,19.9
1966,20.2,19.9,21.8,21.6,23.9,23.9,24.4,25.2,25.1,24.4,23.5,22.7
1967,21.9,22.7,22.3,23,24.7,25,25.2,25.3,25.1,24.9,22.9,22.4
1968,22.3,23.6,22.7,22.4,24,24.4,25.1,24.6,25.1,25.2,24.7,22.7
1969,21.3,20.6,21.5,21.6,23.4,25.1,24.4,24.3,23.4,23.4,22.5,22.1
1970,21.8,21.4,21.4,21.7,22.7,23,23.7,23.6,23.7,23.6,22.8,21.4
1971,21.3,22,20.1,20.9,22,24,24.7,25.4,24.9,23.7,22.2,20.4
1972,20.2,20.5,23.1,21.4,22.3,23.9,23.6,24.5,24.7,23.8,21.9,21.5
1973,21.6,20.8,21,21.3,22,23.7,24.2,24.7,24.7,23.5,23.4,23.2
1974,23.1,21.8,22.3,22.5,22.7,23.8,24.8,24.8,25.8,24.5,22.5,21.5
1975,20.6,20.7,20.3,21.3,22.6,23.3,23.7,23.8,24,22.8,22.5,21.8
1976,21.1,20.3,20.3,21.1,21.9,22.6,23.1,24.2,24.9,23.7,22.8,21.6
1977,23.7,23.2,21.4,22.4,23,24.6,24.7,25.6,25.2,23.9,23.6,23
1978,22.1,22.6,22,22.8,23.9,23.9,24.2,24.1,24.2,23.2,22.5,20.3
1979,20,19.7,21.3,22.6,23.1,22.8,23.4,24.2,24.8,23.9,22.4,22.6
1980,22.2,22.3,20.3,22.7,23.9,24.3,25.1,23.9,24.1,23.1,23,23.9
1981,23.4,22.5,21.5,22,22.9,24.1,24.5,24.2,24.7,23,22.4,21.5
1982,21.2,21.6,20,21.1,22.2,23.9,23.8,24,23.7,23,22.9,21.8
1983,22.3,22.5,22.8,21.2,21.7,23.4,23.2,23.9,23.3,22.2,23.1,23
1984,22,20.9,22.9,21.9,22.7,22.9,23.5,23.1,23.6,24.1,22.2,20.5
1985,21.3,20.4,19,19.9,20.7,23.2,23.5,23.8,23.8,22.2,22.4,21.6
1986,20.9,22.4,23,21.9,23.3,23.8,24.5,24.9,25,24.3,22.4,22
1987,20.8,21.6,21.3,21.2,21.5,23.1,23.9,25.1,24.9,23.6,22.4,21.4
1988,20.8,20.8,21.1,21.6,22.5,23.2,23.9,23.9,24.4,25.1,23.3,23
1989,20.8,20.9,21.5,20.1,21.2,23,23,23.6,23.2,23.4,22.6,21.7
1990,20.7,20,20.5,22.7,22.2,23.1,23.9,24.6,24.5,23.4,22.8,21
1991,21.5,22.6,19.8,21.5,22.8,23.4,24.2,24.4,24.9,24.1,23.7,21.8
1992,21.9,21.3,21.7,22.2,23.4,23.7,23.9,24.1,24.6,24.8,22.8,22
1993,21,20.6,21,22.7,22.3,23.7,23.6,24.5,24.6,23.3,21.5,21.1
1994,20.6,20.3,21.1,22.2,23.2,23.8,25.1,25.6,25,24.8,21.8,22
1995,22.8,22.5,23,22.6,23.3,24.7,25,25.2,25.9,23.4,23.8,23.7
1996,22.1,21.2,21,23.1,23.9,24.5,25.2,25.5,25,24.9,22.9,22.2
1997,22.6,22.3,21.8,23.1,22.9,24.2,25,25.5,25.4,24.6,22.3,22.6
1998,22.5,21.9,22.3,20.9,20.8,22.5,23.3,23.8,23.4,22.3,21,20.1
1999,20.1,19.2,20.4,20.9,22,22.7,23.4,23,23.1,22.9,21.5,20.9
2000,19.5,22,21.6,20.7,22.9,23.8,23.4,23.8,23.7,23,21.7,21.9
2001,22,20.7,21,21,21.9,22.7,24,24.1,24.2,23,22.4,21.7
2002,21.3,20,21.2,22.2,22.5,24.1,24,24.6,23.8,24,23.3,22.1
2003,22.3,21,22.9,21.5,23.3,24.4,25,24.8,25.3,24.9,22.2,22.1
2004,22.3,22,21.7,22.2,23.5,24.2,25.6,25.6,25.8,24,23.6,21.8
2005,21.6,21.1,21.8,22.2,23.7,23.7,24.5,24.5,24.7,22.6,22.3,22.5
2006,21.2,20.2,20.7,20.9,21.3,23.3,23.9,24.1,23.7,23.4,23.3,21.9
2007,20.9,20.4,21.4,21.9,23.1,23.9,24.5,24.4,24.3,22.8,22.5,21.1
2008,20.4,20.7,21.5,21.7,22.4,23.4,24.4,24.1,23.7,22.5,21.9,20.9
2009,20.2,19.6,19.3,19.5,22.7,23.7,23.9,24.2,23.6,23.5,21.9,22
