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