1901,20.6,21,21.4,21.8,21.8,21.5,21.6,20.9,21,20.8,20.6,20.1
1902,20.4,20.9,21.5,21.8,21.8,21.5,21.6,20.7,21.2,20.9,20.7,20.1
1903,20.6,21.2,21.5,21.7,21.7,21.6,21.7,20.9,21.1,20.8,20.5,19.9
1904,20.6,21,21.4,21.8,21.8,21.5,21.6,20.9,21,20.8,20.6,20.1
1905,20.6,21,21.4,21.8,21.8,21.5,21.6,20.9,21,20.8,20.6,20.1
1906,20.4,20.8,21.3,21.7,21.8,21.5,21.6,20.9,21.1,20.8,20.6,20
1907,20.7,21,21.4,21.8,21.8,21.5,21.5,20.8,20.9,20.8,20.7,20
1908,20.5,20.9,21.4,21.9,21.9,21.5,21.6,20.9,21,20.7,20.5,20.1
1909,20.5,21,21.5,21.8,21.9,21.5,21.7,20.9,21,20.8,20.5,20.1
1910,20.4,20.8,21.1,21.5,21.7,21.4,21.5,20.9,21,20.8,20.4,19.8
1911,20.6,21,21.4,21.9,21.5,21.3,21.6,20.9,21,20.9,20.7,20.1
1912,20.6,20.7,21.5,22,21.8,21.4,21.6,20.9,21,20.8,20.4,20.1
1913,20.7,21.2,21.4,21.5,21.5,21.3,21.5,20.9,20.9,20.7,20.5,20
1914,20.5,21,21.1,21.7,21.6,21.3,21.6,20.9,20.9,20.8,20.5,20.2
1915,20.5,20.9,21,21.5,21.9,21.6,21.8,21,21,20.8,20.6,20.1
1916,20.9,20.7,21.1,21.5,21.7,21.3,21.8,20.8,20.9,20.7,20.4,20.1
1917,20.6,21,21.4,21.8,21.8,21.5,21.6,20.9,21,20.8,20.6,20.1
1918,20.4,21.2,21.4,21.8,21.7,21.3,21.6,20.9,21,21,20.6,20.1
1919,20.4,21,21.4,21.7,21.7,21.4,21.6,20.9,21,20.8,20.8,20.1
1920,20.6,20.9,21.4,22,21.8,21.4,21.6,20.8,21,20.8,20.5,20.1
1921,20.5,20.9,21.4,21.7,21.3,21.3,21.5,20.8,21,20.7,20.6,20.1
1922,20.7,21.1,21.5,22,21.8,21.4,21.6,21,21.1,20.8,20.6,20.2
1923,20.6,21.1,21.6,22,21.8,21.6,21.5,20.9,21.1,20.8,20.4,20.2
1924,20.8,20.9,21.4,22,22,21.5,21.6,21,21,20.8,20.5,20.3
1925,20.9,21.1,21.4,21.8,21.8,21.6,21.5,21,21.1,21,20.8,20.3
1926,20.7,21,21.4,22.1,21.8,21.5,21.5,20.9,21,20.8,20.6,20.2
1927,20.4,21.1,21.3,21.7,21.8,21.6,21.6,20.9,21,20.7,20.5,19.9
1928,20.3,21,21.3,21.8,21.6,21.5,21.6,20.8,21,20.7,20.5,19.9
1929,20.7,21.2,21.5,21.8,21.8,21.4,21.4,20.7,20.9,20.6,20.6,20
1930,20.7,21,21.3,21.7,21.8,21.3,21.5,20.9,21,20.7,20.4,19.9
1931,20.9,21.4,21.7,22.1,21.7,21.6,21.3,21.1,21.4,21.3,20.3,20.6
1932,21.2,21.4,21.3,22,22,21.3,21.3,20.9,21.3,20.8,19.9,20.4
1933,21.2,21.5,21.2,22.3,21.8,21.3,21.6,20.6,20.8,20.5,19.6,19.5
1934,20.7,20.6,20.4,22,21.3,21.2,21.4,21.3,21.3,20.7,20.6,20.4
1935,20.1,20.1,21.3,22,21.6,21.3,21.7,20.8,21.1,20.8,20.4,20.2
1936,21.5,21.9,22.3,22.2,21.9,21.5,21.5,21.2,21.3,21.1,21.1,20.1
1937,21.6,21.6,21.9,22.2,21.9,21.6,21.8,20.9,20.7,20.5,19.9,20.2
1938,20.5,20.7,21.2,20.9,21.5,21.2,21.3,20.7,20.8,20.4,20.3,19.4
1939,20.8,20.9,20.8,21.6,21.8,21.2,21.5,21,20.6,20.8,20,20.7
1940,20.5,20.6,21.4,21.4,21.7,21.2,21.8,21.4,21.2,20.5,20.4,20
1941,20.8,21.3,22.1,22.3,21.8,22,21.6,21.2,21,20.8,20.3,20.3
1942,19.9,21.5,21.3,21.9,22.3,21.4,21.4,20.6,20.7,20.5,20.2,20
1943,20.2,19.8,20.1,20.9,21.3,21,21.3,20.6,21.1,20.2,19.8,19.6
1944,20,20.8,21.4,21.9,21.1,20.8,21.7,20.8,20.6,20.1,20.5,19.3
1945,20.6,21.2,21.4,21.2,21,21.6,21.5,20.7,20.9,20.2,20,19.8
1946,20.6,20.8,21,21.4,22,21.7,21.6,20.9,20.8,20.3,20.4,19.8
1947,20.8,20.6,21.6,21.6,21.3,21.1,21.1,20.2,20.5,20.6,20.6,19.6
1948,20.1,20.8,21.4,20.8,21.3,20.9,20.8,20.4,20.7,20.7,20.8,19.9
1949,19.8,20.6,20.9,21.5,21.7,21.1,21.1,20.3,20.5,20.5,19.4,19.2
1950,20,19.8,20.4,20.8,21.1,20.6,20.8,20.2,20.9,20,19.3,19
1951,20.6,19.9,21.1,22.2,22.3,22.5,22.4,21.8,22,20.9,20.7,20.4
1952,20.9,20.6,20.6,21.5,21.1,21.3,20.9,21.9,22.3,20.6,21.8,19.5
1953,19.9,19.8,20.9,22.2,21.8,21.9,21.9,21.3,21.2,21.1,20.5,20.4
1954,20.6,20.3,21.1,21.1,20.8,20.2,20.5,20.2,20.7,19.3,22,19.2
1955,20.1,20.7,20.5,21.1,21.3,21.2,20.6,20.4,20.7,19.8,20.1,19.3
1956,20.3,22.1,23,23.2,22,21.8,21.6,21.5,21.3,21.5,20.7,20.2
1957,21.3,22.1,21.8,22.6,22.8,22.9,22.3,21.8,22.1,21.6,21.3,20.1
1958,21,21.4,22.7,22.6,22.9,22.4,22.5,21.6,22.2,21.8,21.1,20.4
1959,20.2,21.7,22.1,21.6,22.3,21.6,22.7,21.5,22.2,21.4,20.8,20.2
1960,21.2,21.5,21.6,22.6,22.3,22.2,22.4,21.7,22,21.3,21.1,20
1961,22.5,22.1,21.3,22.4,21.7,21.3,21,21,20,20.4,20.8,21
1962,21.4,21.6,21,21.8,20.9,20.7,20.4,20.5,20.8,19.9,21.8,21.2
1963,21.3,21.3,21.7,21.8,21.8,21.8,22.1,21.5,21.1,21.1,21.8,21.4
1964,22.3,21.7,21,22.4,22.3,20.8,20.6,20.2,20.6,20.2,20.8,21.3
1965,21.6,21.8,21.1,22.3,21.8,22.5,22.9,20.8,21.3,21.5,22.4,21.6
1966,22.9,21.9,22.7,21.7,22.1,21.7,22.2,21.8,21.7,20.6,20.6,19.7
1967,21,20.9,21.1,21.8,23,21.3,21.5,20.9,20.6,20.9,20.4,19.9
1968,20.8,20.3,21,21.3,20.6,20.6,21.7,21.3,20.9,20.7,20.5,19.8
1969,19.2,20,22.3,21.4,22.3,21.4,22,20.1,21.3,20.4,20.2,20.3
1970,20.2,20.8,21.2,21.7,21.3,21.5,20.3,19.6,20.4,20.2,19.3,18.9
1971,20.1,20.4,20.8,20.7,21.2,21,21,19.6,19.5,20.2,19.7,19.5
1972,20.1,20.6,20.7,21.6,21.4,21.6,22.5,21.5,21.4,21.3,21.4,21.1
1973,21.2,21.6,22.1,22.1,21.8,21.2,21.1,19.8,20,19.8,20.5,18.9
1974,20.1,19.8,20.4,21.6,20.8,20.6,21.2,20.7,19.5,20.1,20.6,19.8
1975,20.2,18.7,19.6,19.9,20.5,20.4,19.7,19,19.4,19.8,19.4,18.7
1976,19.7,20,20.7,19.9,20.8,20.6,21.7,20.6,20.7,20.4,20.9,20.4
1977,18.7,20.2,20.4,20.9,21,21,21.5,20.1,20.6,20.5,19.8,20.7
1978,20.8,20.9,21.9,21.4,22,21.8,21.3,20.7,20.9,20.8,20.5,19.6
1979,19.6,20.9,22.1,21.3,22,21.6,21.9,20.9,20.7,21.2,20.1,20
1980,20.2,20.3,22.4,21.2,22.2,21.9,21.7,20.5,20.4,21,19.7,18.8
1981,18.9,20.2,21.9,21.8,21.5,21.1,21.5,20.4,21.3,20.8,19.9,19.4
1982,19.5,20.5,21.6,21.2,21.1,21.6,22.4,22.9,21.8,21.5,20.8,20.5
1983,21,21.3,22.1,22.3,23.6,22.4,22.6,21.9,21.4,21.1,20.3,19.4
1984,19,20.2,21.6,21.2,21.8,21.7,20.8,20.6,20.7,21.1,19.7,19.5
1985,19.2,20.4,21.9,21.6,21.7,21.8,21.2,20.4,21.1,20.6,20.4,19.6
1986,19.4,21.7,20.9,21.6,21.8,22,22.8,21.9,21.6,20.9,20.9,20.5
1987,20.5,21.3,21.9,22.8,22.5,22.2,22.1,22,22.1,22.2,21.8,20.8
1988,20.6,21.4,22.1,22.2,22.4,21.5,21.9,20.6,21.4,21.4,20.4,19.6
1989,20.4,20.3,20.7,21.7,21.9,21.5,22.1,21.1,21.1,21.2,20.2,19.4
1990,20.9,20.7,21.7,22,22.7,22.5,21.8,21.7,21.9,21.2,20.9,20.4
1991,20.7,21.1,23.1,21.8,23.2,22.3,23.8,22.6,22.9,22.4,20.9,20.2
1992,20.4,21.1,23.2,22.8,23.8,23.4,23,21.4,21.8,22.3,19.5,19.6
1993,19.4,20.4,22.5,21.9,22.8,23.2,23.5,22.6,21.9,22.6,20.6,20.8
1994,20.2,20.6,22.8,21.9,23.1,22.9,23.4,22.4,23,22.3,20,20.7
1995,20.9,21.4,22.7,21.3,22.7,22.6,23,21.8,22.3,21.8,19.9,19.3
1996,19.8,20.6,22.3,20.8,21.5,21.7,22.1,21.4,21.3,20.9,19.4,20.1
1997,19.3,21,22.1,21.6,22.9,22.5,23.4,23,22.1,22.2,20.6,20.6
1998,20.6,21.2,23.4,23.2,24.2,23.1,22.1,21.7,21.6,21.6,20.6,19.2
1999,19.8,20.4,21.6,21.2,21.7,21.6,21.9,20.9,20.7,20.7,20,19.8
2000,19.7,20.4,21.6,21.6,22,22,22.2,21.7,21.3,21.8,21.3,20.5
2001,21,21.8,21.9,22.8,23,22.7,22.6,22.5,21.7,22.2,21.4,21.1
2002,21.8,22.5,22.9,23.2,22.5,22.7,23.1,21,22,21.9,21.6,21.3
2003,21.8,22.7,22.5,23,22.7,22.1,22.6,22,22.1,21.9,21.5,20.4
2004,21.5,22.4,22.9,23.4,22.7,23.2,22.3,21.8,21.5,21.5,21.1,20.9
2005,21.2,21.7,22.5,23,22.5,22.1,22.5,21.7,22,20.7,20.7,20.3
2006,21.5,21.4,22.1,22.5,22.5,22.3,22.5,22.1,22.1,22.1,20.7,20.9
2007,21.7,22,22.2,22.5,22,22.2,22.2,21.1,21.5,20.8,20.6,20.3
2008,21.3,21.5,22,22.3,22.3,22.2,21.9,21.2,21.8,21.3,20.8,20.7
2009,21.5,21.8,21.8,23.2,22.4,22.4,23.2,22.2,22.8,22,21.4,21.5
