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