1901,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1902,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1903,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1904,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1905,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1906,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1907,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1908,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1909,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1910,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1911,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1912,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1913,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1914,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1915,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1916,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1917,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1918,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1919,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1920,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1921,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1922,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1923,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1924,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1925,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1926,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1927,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1928,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1929,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1930,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1931,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1932,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1933,20.5,20.7,20.9,20.7,20.4,20.1,19.9,20.4,20.6,20.6,20.5,20.3
1934,20.4,20.6,20.8,20.6,20.5,20.1,19.9,20.5,20.6,20.5,20.4,20.2
1935,20.5,20.5,20.9,20.6,20.4,20.1,19.8,20.3,20.7,20.8,20.5,20.3
1936,20.5,20.7,20.8,20.6,20.5,20.2,19.9,20.3,20.6,20.6,20.6,20.2
1937,20.5,20.7,20.9,20.6,20.3,20.1,19.8,20.3,20.6,20.6,20.6,20.3
1938,20.6,20.7,20.8,20.7,20.4,20.1,20,20.4,20.7,20.6,20.5,20.3
1939,20.5,20.7,20.8,20.6,20.4,20,20,20.5,20.6,20.6,20.5,20.3
1940,20.5,20.8,20.7,20.4,20.6,20.4,19.9,20.6,20.8,20.5,20.6,20.5
1941,21.4,22.5,21.4,21.4,20.8,20.1,20.1,20.3,20.6,21,20,20
1942,21.2,21.8,20.8,20.4,20.7,20.4,19.4,19.9,20.4,20.7,20.7,20.6
1943,21.1,20.3,20.6,20.8,20.5,20,19.7,19.7,20.1,20.7,21.7,21.5
1944,21.4,21,20,20.5,20.1,21.2,19.8,20.1,20.1,20.8,21.3,20.7
1945,21.1,20.8,22.3,21.6,20.1,19.3,20.1,19.7,20.1,20.5,20.7,19.8
1946,21.5,21.8,21.3,20.3,20.3,19.3,19.1,19,19.8,20.3,19.8,20.4
1947,20.4,20.7,20.5,19.6,20,20.1,19.7,19.7,20.1,20.8,21.6,20.3
1948,20.5,21.2,20.2,20.8,20.7,19.8,19.7,19.9,19.6,20.1,20.1,19.9
1949,20.9,21.3,21.2,21.8,20.6,19.8,19.6,20.4,19.8,20.4,21.5,20.4
1950,20.4,19.5,21,20.3,19.7,19.6,19.2,19.4,19.4,18.8,20.2,20.3
1951,21,20.9,21,20.8,20.5,20.3,20.1,20.3,21.4,21,21,20.2
1952,21.4,21.2,21.5,21.2,20.8,20.2,19.9,20.5,21.1,20.8,20.5,20.7
1953,21,20.9,21.1,21.2,20.7,20.5,20,20.7,21,20.8,20.9,20.8
1954,21.3,21.1,21.6,21,20.6,19.9,19.9,20.2,20.7,20.6,20.4,20.2
1955,20.9,20.7,20.9,20.6,20.3,20.2,20.2,20.6,20.7,20.7,20.7,20.1
1956,20.1,20.2,21,20.5,20.5,20.2,19.6,20.7,20.4,20.6,20.3,20
1957,20.6,20.1,20.7,20.8,20.7,20.5,20.1,20.7,21.2,21.1,21.2,20.6
1958,21.4,20.6,21.6,21.4,20.9,20.4,19.9,20.6,21.2,21.1,21.3,20.7
1959,21,21.2,21,21,20.9,20.2,20,20.6,20.9,20.8,20.7,20.6
1960,20.8,20.4,20.7,20.5,20.3,20.3,19.7,20.7,20.6,20.6,21.1,20.8
1961,21.1,20.9,21.5,20.8,21.3,20.8,20.5,20.6,20.5,20.5,20.2,20.4
1962,20.2,20.6,20.9,21.1,20.4,20.3,20,20.6,20.8,20.7,20.4,20.2
1963,19.7,20.3,20.6,20.3,20.4,19.9,19.9,20.1,20.5,21.1,20.6,20.2
1964,20.7,21.1,21.1,20.7,20.4,20.2,19.3,20.1,19.9,20.1,20.6,19.8
1965,20.1,20.5,20.8,20.6,20.4,19.9,19.4,20.1,21,20.3,20.6,20.3
1966,21.1,21.2,21,20.3,20.6,20.2,20.3,20.8,20.9,20.8,20.1,20.4
1967,20.7,21.1,21.5,21,20.6,20,19.7,20,20.3,20.2,20.2,20.4
1968,20.2,20.2,19.7,20,19.8,19.6,19.3,19.9,20.3,20.3,20.1,20.3
1969,20.3,20.3,20.8,21.4,20.4,20.1,19.8,20.1,21,21.2,20.7,20.5
1970,20.9,21.2,21,20.6,20.3,20.1,19.4,20,20.5,20.5,20.6,20.2
1971,20.2,20.4,20.4,20.3,20.2,19.3,19.5,20.3,20,20,20.3,19.9
1972,19.7,19.8,20.7,20.9,20.6,20.3,20.2,20.7,21.1,21,20.5,20.6
1973,20.8,21.4,20.8,21.3,20.6,20.2,20,20.5,20.8,20.9,21,20.1
1974,20.3,20.4,20.6,20.6,19.9,20.1,19.6,20.4,19.5,20.5,20.4,20.1
1975,20.4,20.8,21.2,20.7,20.4,20,20.1,19.8,20,20,20.2,20
1976,20.6,20.6,21.1,20.5,20.5,20.2,19.9,20.4,20.6,20.9,20.8,20.5
1977,21,20.9,20.9,21,20.7,19.9,20,20.7,20.9,21,20,20.2
1978,20.2,21,20.4,20.7,20.3,20,19.8,20.6,21,20.7,20.5,20.5
1979,20.8,20.1,19.7,20.3,20.3,19.9,20.1,21.2,20.5,19.6,20.7,21
1980,20.7,20.7,21,21.3,20.3,19.4,19.4,20,20.8,20.7,20.2,20.2
1981,20.5,20.8,20.9,20.2,20.1,19.9,19.2,20.4,20.5,20.4,20.6,20.3
1982,20.8,20.8,21.2,20.6,20.1,20.3,20.1,20.5,21,20.2,20.4,20.4
1983,21,21.5,21.4,21,20.6,20.4,20.5,20.7,20.5,21,21.2,19.3
1984,19.3,20.6,20.8,19.8,20.4,20.1,19.6,20.2,20.7,20.4,20,20.2
1985,21.1,20.1,20.4,20,20,19.6,20,20.3,20.5,20.4,20.6,20.3
1986,20.8,20.8,20.7,20.6,20.3,19.6,19.6,20.8,20.6,20.9,20.7,20.4
1987,20.9,20.8,21.8,21.9,20.9,20.4,20.3,21.1,21.6,21.3,21.3,21.2
1988,21.3,21.7,21.4,20.7,20.7,21.1,20.2,20.5,20.6,20.7,20.3,20.3
1989,18.3,20,20.7,20.2,20,19.9,19.7,20.1,20.5,20.4,20.6,20.5
1990,19.9,21.1,21,21,20.7,20.3,20,20.3,20.3,20.7,20.6,20.4
1991,20.1,21,21.6,21,20.8,20.9,20,20.2,20.8,21.1,20.8,20.4
1992,20.9,21.4,21.7,21.3,20.2,20.6,20.1,20.2,20.6,21,20.6,20.3
1993,19.6,19.2,20.7,20.7,20.3,20.9,20,21.8,20.4,20.4,22.8,20.8
1994,19.2,20.8,19.8,20.7,21,20.4,19.6,20.7,20.9,21.1,20.8,20.4
1995,20.4,20.9,21.1,22.6,20.8,21,20.3,22.6,20.8,21.4,22.9,21.1
1996,21.2,21.5,20.9,20.9,20.6,20.6,20.8,20.7,20.9,21.2,20.7,21
1997,21.6,21.3,20.7,21.2,21.3,21,20.7,20.6,22.2,21.3,21.3,21.2
1998,21.4,21.4,21.5,20.5,20.5,20.8,20.7,20.3,20.8,21,21.7,21.1
1999,21.1,22.2,21.1,21.2,20.3,21.4,20.3,21.1,21.2,20.2,20.7,20.5
2000,21.2,21.3,21.4,21.9,22.3,20.5,20.4,22.1,21,20.7,22,20.4
2001,21.6,23.2,22.2,22.7,20.6,21,21.3,22.3,22.2,21.3,21.2,20.8
2002,20.8,21.3,22.4,22.7,22.4,21.9,22.8,22.6,22.7,21.5,22.1,22.1
2003,23.5,22.3,23,22.3,22,21.3,21.1,21.3,22.2,22.3,22.9,23.1
2004,23.3,22.7,22.2,20.6,21.2,21.3,21.4,22.2,21.4,21.6,20.9,20.7
2005,20.2,23.2,23,22.7,21,21.7,20.7,21.8,22.2,21.5,23.8,23.7
2006,21.6,22.3,21.9,22,20,20.2,21.1,22.1,20.6,22.5,22.6,21.1
2007,21.9,23,22.8,22,21.7,19.9,19.3,20.7,22,20.8,20.7,22
2008,22.5,23.1,21.7,21.5,21.6,20.6,20.3,21.7,21.4,20.5,19.8,20.2
2009,20.8,23.9,21.8,21.7,21.1,20.8,20.6,22.4,22.1,22.2,22.4,23
