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