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