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