1901,20.8,20.8,20.6,20.9,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1902,21,20.3,20.8,20.7,21.1,20.3,19.5,19.8,20.3,20.7,20.6,20.4
1903,21.3,21,21.2,20.9,20.9,19.8,19.5,19.7,20.3,20.7,20.6,20.4
1904,21,20.5,20.5,20.7,20.8,20.1,19.5,19.1,20.3,20.7,20.6,20.4
1905,21.3,21.1,21.5,21.5,21.4,20,19.5,19.9,20.3,20.7,20.6,20.4
1906,20.9,20.8,21.4,21.7,20.9,20.2,19.5,19.6,20.3,20.7,20.6,20.4
1907,20.7,20.9,21.1,21,21.1,20.2,19.5,20.1,20.3,20.7,20.6,20.4
1908,20.7,20.5,21,21.1,21.1,19.4,19.5,18.8,20.3,20.7,20.6,20.4
1909,21,20.9,21.2,21.5,21.1,21,19.5,20.6,20.3,20.7,20.6,20.4
1910,20.5,20.2,20.4,20.3,20.6,20.8,19.5,19.5,20.3,20.7,20.6,20.4
1911,20.7,20.5,21.3,21.1,21.3,20.6,19.5,19.7,20.3,20.7,20.6,20.4
1912,21.1,21.4,21.8,21.7,21.6,21.1,19.5,20,20.3,20.7,20.6,20.4
1913,20.8,20.3,20.7,20.8,20.8,19.7,19.5,19.7,20.3,20.7,20.6,20.4
1914,21.5,21,21.5,21.4,21.2,20,19.5,19.7,20.3,20.7,20.6,20.4
1915,21,20.9,21.1,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1916,21,20.9,21,20.8,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1917,21,20.9,21,20.9,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1918,21,20.9,21.1,20.9,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1919,21,20.9,21.1,21.1,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1920,21,20.9,21.1,20.9,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1921,21,20.9,21,20.9,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1922,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1923,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1924,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1925,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1926,21,20.9,21.1,21.1,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1927,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1928,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1929,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1930,21,20.9,21.1,20.9,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1931,21,20.9,21.1,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1932,21,20.9,21.1,21.1,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1933,21,20.9,21.2,21.1,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1934,21,20.9,21.1,21.1,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1935,21,20.9,21.1,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1936,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1937,21,20.9,21.2,21.1,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1938,21,20.9,21.1,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1939,21,20.9,21,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1940,21,20.9,21.2,21,21.1,20.3,19.5,19.6,20.3,20.7,20.6,20.4
1941,22.4,21.9,22.5,22.1,22.1,21.1,19,19.6,20.8,21.8,20.6,21
1942,22.1,22,22.3,21.8,21.4,21.1,19,19.6,20.7,21,20.6,20.5
1943,21.4,20.9,21.5,21.2,20.7,19.3,18.4,19.6,20.7,21.2,20.6,20.9
1944,21.4,21.3,21.2,21.2,21.7,21.4,19.7,19.6,21.4,21,20.6,21.1
1945,22,21.7,22.1,20.9,21.6,20.9,19.9,19.6,21,20.9,20.6,20.2
1946,22.2,21.6,21.8,21.8,20.9,20.7,19,19.6,20.4,20.5,20.6,20.4
1947,21.7,21.2,21.6,21.3,22.1,22,20.4,20.8,21,21.6,20.6,20.7
1948,21.5,20.9,21.4,20.7,21,20.7,19.4,19.8,21,21.2,20.6,20.7
1949,22,21.6,22,21.8,22.2,21.3,20.1,19.8,21.1,21.1,20.6,20
1950,21.5,21,21.8,21.1,21.5,21.7,19.3,18.9,20.4,20.4,20.6,20.6
1951,21.5,20.9,21.5,21.5,21.6,21.1,19.4,19.8,20.6,21.2,20.7,21.5
1952,21.5,21.5,21.9,20.5,21.6,20.8,19.4,18.3,20.6,21.4,20.2,20.7
1953,20.9,20.6,21.1,22,21.1,20.7,19.9,19.4,20.4,21,20.4,21.2
1954,21.5,20.7,21.6,20.8,21.5,20.3,19.1,18.5,20.2,20.9,20.5,20.7
1955,20.6,21.1,21.5,20.7,21.7,20.7,19.5,19.7,20.2,20.8,20.6,19.9
1956,20.9,21.2,21.2,20.8,21.6,20.6,19.5,18.5,20.5,20.8,20.4,20.5
1957,20.6,20.9,21.4,21.3,22.1,20.7,19.7,20.1,20.6,20.8,20.8,20.8
1958,22,21.4,22,21.8,21.6,19.7,19.2,19.1,20.5,21.3,20.6,21.3
1959,21.5,21.5,21.8,21.1,21.9,20,19.9,19.9,20.2,21.2,20.8,21.5
1960,21.8,20.9,21.7,21.3,21.6,20.3,19.7,20.5,20.8,21.2,21.2,21.2
1961,21.1,20.6,21.7,21.5,22,19.8,18.6,19.1,20.2,20.7,20,20.2
1962,20.8,21,21.5,21.5,22.2,20.3,20.2,19.4,20.2,21.3,20.9,20.5
1963,20.4,20.8,20.4,21.4,21.8,21,20,19.7,20.8,20.7,20.7,20.8
1964,21.9,21.1,21.7,21.7,21.9,19.6,19.2,19.3,20.8,20.4,20.3,20.2
1965,21,20.5,21.2,20.9,21.4,20.6,19.5,19.8,20.6,21.2,20.9,20.5
1966,21.3,21.2,21.3,21.1,21.7,20.6,20,20,20.2,21.2,20.7,20.7
1967,21.2,21.1,21.4,21.5,20.9,20.4,18.9,19.4,20.1,21,20.9,20.8
1968,21.1,21.1,21.3,21.1,21.1,20.4,19.6,19.5,20,21.1,21,20.6
1969,20.9,21.5,22.3,21.8,22.4,20.1,19.1,19.9,20.7,21.3,21.3,20.8
1970,21.5,21.5,21.9,21.8,21.7,20.3,19.2,19.9,19.9,20.6,20.8,20.2
1971,21,21,20.9,20.4,20.3,21.2,19.9,19.1,20.5,21,20.4,19.4
1972,21.1,21.1,21.4,20.8,20.9,19.9,19.9,19.4,20.4,20.6,20.8,20.8
1973,21.4,21.4,20.3,21,20.2,20.6,19.9,19.6,20,20.3,20.5,20.5
1974,20.6,20.2,20,20.6,20.1,21.1,19.2,19.3,20.2,20.7,19.9,19.2
1975,20.5,20.5,20.7,20.8,20.7,19.9,19.3,18.6,19.9,19.9,19.8,19.6
1976,20.6,20.2,20.7,20.6,20.2,19.4,18.8,18.7,19.7,20.2,19.8,19.9
1977,20.9,20.7,20.8,21.1,20.7,19.7,19.5,19.5,20.1,20.6,20.5,20.2
1978,20.5,20.9,20.9,20.3,20.2,19.5,19,18.9,19.4,20.3,20.3,20.3
1979,21.1,20.9,21,20.9,20.8,20.2,20.4,19.8,20.4,21.2,21.2,20.8
1980,21.4,21.2,21.2,21.4,21.5,19.8,19.5,19.2,20.5,20.3,21.1,19.9
1981,20.6,20.8,20.6,21,21.3,20.5,19.1,19.7,20.6,20.6,19.7,20.4
1982,20.8,20.6,20.8,20.4,20.3,19.7,19,19.2,20,20.6,20.8,20.8
1983,20.1,20.7,22.2,21.9,21.9,20.1,19.5,19,21.1,20.2,20.8,20.6
1984,20.7,21.2,20.5,20.8,20.9,20.5,19.8,20.5,21,21.4,20.4,20.2
1985,20.9,20.3,20.9,20.7,20.6,20.3,19.6,19.9,20.1,20.9,20.8,20.5
1986,20.9,20.6,20.2,20.8,21,20.5,19.4,19.7,20.7,20.3,20.8,20.3
1987,21.1,21.2,21.2,21.1,21.6,20.9,20,20.5,20.3,20.7,20.9,21.3
1988,21.4,21.2,21.4,21.2,21.4,20.4,19.5,19.8,20.2,20.7,20.6,19.7
1989,20.4,20.6,20.6,21.3,20.2,20.4,19.9,20,20.9,21.2,20.8,20.4
1990,21.7,21,21.4,20.7,21.1,21.4,19.8,19.7,20.2,21.6,21.1,21
1991,21.2,21.2,21.9,21.3,21.3,20.4,20.4,19.7,20.7,20.5,21.2,20.8
1992,20.8,20.9,21.8,21.8,21.1,19.7,19.4,20.1,19.8,20.8,20.9,20.6
1993,20.9,20.1,21.2,20.7,21.3,20.3,19.7,19.8,20.1,20.6,20.9,20.6
1994,20.6,20.8,21.3,21.6,21,20.2,19.3,19.6,20.4,20.7,21.2,20.4
1995,21.4,20,20.6,22,21.3,20.9,20.4,20,20.3,21.2,21.5,20.3
1996,21.4,21.5,22.1,20.8,20.1,20.8,20,19.9,20.5,21.2,20.8,20.5
1997,21.6,21.7,21.4,20.9,21.3,20.5,20.1,20.9,21.4,21.4,22,20.8
1998,21.8,22.7,22.2,22.1,21.2,21.8,20.7,20.3,21.4,21,21.5,21
1999,20.9,21,21.4,21.1,21.3,20.9,20,20.6,19.7,20.6,21.3,20.6
2000,21.4,20.5,21.7,21.1,21.6,20.3,20,19.7,20.3,21,20.5,20.2
2001,20.7,22.1,21.5,20.4,21.4,20.7,20.3,18.9,20,20.7,21.3,21.3
2002,20.9,21.2,21.5,21.4,22.5,20.8,20.2,19.9,20.2,20.7,21.1,21.1
2003,21.4,21.3,21.4,21.7,21.5,19.8,20.1,20.1,20.9,21,21.5,20.9
2004,21.5,21.1,21.2,21.6,21.2,20.2,19.7,19.6,20.1,20.8,21.3,20.7
2005,21.3,21.6,21.7,21.6,21.2,20.1,19.5,20.2,20.8,20.8,20.8,20.8
2006,22.5,21.2,20.4,21.4,21.6,20.8,20.1,20,20.4,21,20.7,19.7
2007,21.5,21.3,21.1,20.6,21.2,20.7,19.6,20.2,20.9,20.8,21.2,20.6
2008,20.7,20.6,21,20.7,21.3,20.5,19.6,19.7,20.5,21.1,20.9,21
2009,21.1,21.7,21.5,21.9,22.1,20.7,19.7,19.8,20.6,21.3,20.8,21
