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