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