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