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