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