1901,21.7,22,21.7,21.6,20.7,19,18.1,19,20.2,20.7,20.9,21.3
1902,21.6,21.5,21.7,21.5,20.7,18.9,18.4,18.8,20.2,20.6,21.2,21.5
1903,21.9,22.4,21.7,21.2,20.2,18.7,18,18.5,20.1,20.4,20.7,20.8
1904,21.3,21.4,21.3,21.2,20.1,19,17.9,18.7,19.9,20.4,21.1,21.3
1905,21.6,22,21.4,21.5,20.6,19.2,18.3,18.7,19.9,20.7,21.1,21.2
1906,21.7,21.9,21.7,21.6,20.5,18.6,18,18.6,20.1,20.2,21.1,20.9
1907,21.5,21.2,21.8,21.2,20.4,18.9,17.9,18.7,20.1,20.5,21.1,21.4
1908,21.8,21.6,21.7,21.5,20.6,19.2,17.9,18.5,19.8,20.1,20.8,21.1
1909,21.4,21.4,21.7,21.1,20.6,18.5,17.8,18.4,20,20.5,20.8,21.1
1910,21.1,21.3,20.9,21.3,20.1,19.1,18,18.6,20,20.2,21.1,21
1911,21.2,22.1,21.2,21.6,20.4,18.8,18.3,18.8,20.3,20.9,21.2,21.9
1912,22.3,22.2,22.3,21.9,20.8,19.4,18,18.9,19.9,20.5,20.7,21.1
1913,21.6,22,21.7,21.2,20.1,18.9,18.3,18.4,19.7,20.4,21.3,21.7
1914,22,22.4,22.1,21.6,21,19.3,18.5,19,20.2,20.3,21,21.9
1915,22.5,22.3,22.8,22.4,21.2,18.8,18.3,19,19.7,20.6,20.6,21.7
1916,22,22.2,22.1,22.1,20.3,17.5,16.9,17.8,20,20,20.2,21.4
1917,21.9,22,22.1,21.7,20.3,19,17.7,18.1,19.2,19.9,21.1,20.4
1918,21.6,21.4,22.3,21.4,18.9,20.4,18.4,20,20.3,20.8,21.3,21.8
1919,22.9,23.3,22.4,21.6,21.3,19.1,18.4,18.6,20.9,21.1,21.7,22
1920,22.4,22.5,22.3,21.7,20.7,18.7,18.4,18.6,20.6,21.5,22.1,22.4
1921,21.4,21.3,21.5,20.9,20.2,17,16.2,17.8,19.1,20.1,20.9,21.6
1922,22.5,22.5,22.3,21.9,20.4,19.1,18.3,18.8,20.4,20.6,21.4,21.9
1923,21.2,21.7,21.6,21.1,20.5,19.1,18.2,18.9,20.3,20.8,21.6,21.4
1924,22.8,22.2,22.1,21.8,20.3,18.7,18.1,18.5,19.7,20.3,21,21
1925,21.4,21.1,21.2,21.5,21,19.3,18.1,19.3,19.8,21.3,21.6,22.2
1926,22.8,22.6,22,21.7,20.6,19.2,18.2,19.1,20.6,21.4,22.3,22.1
1927,22.3,22.1,22.1,21.6,20.4,18.9,18,18.7,20.5,21.4,22,22.5
1928,22.5,22.5,21.8,21.6,21,19.2,18.1,18.8,20.3,21,22.1,22.2
1929,22.6,22.3,22.1,21.5,20.6,19.2,18.1,18.7,20.2,21.1,21.8,21.9
1930,22,22,21.8,21.6,20.5,19.2,18,18.6,19.8,21.2,21.8,22.4
1931,23.1,22.9,22.1,22.1,21.1,19.4,18,19.2,20.4,21.3,22.2,21.9
1932,22.3,22.7,22,21.5,19.9,18.5,18.3,19.1,20.5,21.3,22,22.1
1933,22.5,22.1,22.2,21.5,20.6,18.9,17.7,19,20.8,20.6,21.5,22.1
1934,21.9,21.2,22.1,21.5,20.8,19.4,18.2,18.4,19.9,21,21.7,22.1
1935,22.4,22.2,22.5,21.4,20.2,18.9,18.2,18.4,20.3,21.7,21.9,22.4
1936,22.3,22.7,21.7,21.5,21.2,19,18.2,18.8,20.6,21.3,21.8,22.2
1937,22.2,21.9,22.3,22.3,21.2,20.1,19.3,20.1,21.1,21.3,22.5,22.5
1938,22.6,22.3,22.2,22.4,21.1,19.4,19,19.6,21.1,21.1,22.1,22.2
1939,22.1,22.1,22.2,22.7,21.3,20.5,19.2,18.9,20.5,21.9,22.1,22.2
1940,22.6,23.3,23,22.4,21.7,20.2,19.4,19.3,21.3,22.2,22.8,22.3
1941,22.9,23,23.5,22.8,22.3,19.6,19.3,20.1,21.4,22.8,23.7,23.4
1942,23.5,23.8,23.3,23.2,21.9,20.6,19.7,20.8,21.5,22.8,23.5,22.6
1943,23.7,22.9,22.9,23.1,22.3,20.6,20,20.1,20.9,22.5,23.5,22.7
1944,23.2,22.4,21.8,23.2,22.4,21,19.6,20,21.7,22.5,22.7,23.3
1945,23.4,22.8,23.1,23.3,22.1,18.7,19.8,20.5,21.9,21.9,22.9,22.7
1946,23.3,23.6,23.1,21.6,20.8,20,18.1,19.4,21,22,21.3,21
1947,23.2,23.3,23.3,22.8,21.9,18.4,17.8,17.4,21,20.8,21.1,20.8
1948,22.9,21.4,20.9,20.8,21.1,19.3,18.1,19.5,20.7,21.2,21.5,21.3
1949,22.1,21.2,21.5,20.8,21.4,19.8,17.3,19.2,20.9,21.5,22.5,22.4
1950,21.5,21.4,21,21.5,20.3,19.5,18.2,19.7,21.1,21.5,22.5,20.6
1951,21.7,20.6,21.6,20.9,21.3,19.2,18,18.6,20.9,21,21.1,21.8
1952,21.5,21.1,22,20.4,19.6,16,16.4,17,18.4,20.9,20.8,21
1953,21.3,21.6,20.9,21.1,19.7,18.6,16.1,18.4,20.9,20.8,20.9,21.6
1954,21.4,21.3,20.9,21.7,19.7,19.5,18,20,20.7,20.1,21.1,21.2
1955,21.4,21.4,21.4,21.2,19.7,19.4,17.1,18.6,20.7,21.4,21.9,21.4
1956,21.3,21.4,21.8,20.7,19.1,17.8,17.7,17.4,21.1,20.1,21.2,21.7
1957,21.7,21.3,21.3,20.1,20.3,18.1,16,17.8,19.3,20.3,20.8,21.6
1958,22.2,21.6,21.4,20.6,18.8,18,18.2,17.9,20.4,20.3,20.8,21.4
1959,22.1,21.1,21.3,20.2,19.1,17.6,16.7,17.1,18.9,20.2,21.3,21.7
1960,21.3,21,21.3,20.3,18.7,17.2,15.9,15.8,18.6,19.8,20.2,21.5
1961,22.7,21.8,22.8,22.3,20.7,16.8,19.5,21.4,22,22.4,22.4,22.1
1962,22,21.3,21.8,22.4,20.1,19.1,15.8,19.4,21.4,20.5,23.1,22.3
1963,22.1,22.2,20.6,21.8,20.5,19.5,18.6,21.2,22.1,22.7,21.9,22.1
1964,22.1,22.9,21.1,21.3,19.8,19,18.4,20.1,21.2,20.6,21.2,22.6
1965,22.3,21.9,21.1,21,20.2,19.9,18.5,18.8,20.3,22.1,21.1,21.4
1966,22.4,23.3,22,21.9,21.8,19.2,17.4,17.1,20.6,21.3,21.7,21.7
1967,22.1,21.8,22.1,21.1,21.6,19,17.8,19.9,20.8,20.9,21.5,21.9
1968,21.6,22.4,22.4,21,19.9,20.1,19.7,19.1,20.4,21.8,22.8,22.1
1969,21.4,21.5,23.1,22.2,22.9,19.8,19.3,19.7,21.8,22.1,22.9,21.7
1970,21.9,20.9,21.4,22.2,21.2,19.4,17.7,18.9,20.2,21.4,21.6,21.3
1971,22.1,21.4,21.5,20.9,19.4,18.2,18,18.2,20.2,19.7,21.1,21.8
1972,21.2,21.3,21.9,20.7,21,19.9,18.3,18.3,19.8,20.7,22.1,22
1973,22.1,21.8,22.1,22,20.1,19.5,17.4,17.8,19.5,21,20.9,21.3
1974,21.7,20.7,21.3,20.8,19.9,18.7,18.1,18.3,19.7,20.5,21.7,21.5
1975,21.8,22.1,22.3,23.1,21.5,20.4,18.6,19,19.7,21.4,22.3,21.8
1976,22,21.2,21.6,21.3,20.4,18.7,18.6,18.6,19,20.9,21.1,21
1977,21.9,21.8,21.8,21.5,19.7,19.1,19.5,18.6,20.4,20.6,21.1,21.9
1978,21.6,22.4,21.6,21.7,20.3,19,19.2,17.3,20,21.1,21.1,21.4
1979,22.1,21.9,22.1,21.5,21,17.3,18.6,19.8,20.3,20.6,22.2,21.5
1980,22.4,23.1,22.1,22.2,20.9,18.7,18,18.8,19.6,20.6,20.9,22.1
1981,22.1,20.9,22.1,21.8,21.7,18.6,18.3,18.4,19.5,20.9,22,21.6
1982,22,21.7,22.2,21.5,19.9,19.7,18.1,18.7,19.8,20.5,21.8,21.6
1983,22.5,22.9,22.2,22.8,21.6,17.4,18.2,18.1,19.5,21.8,21.4,22.5
1984,22.1,21.9,22.1,21.5,20.7,19,17.8,17.7,20.1,22.2,20.5,22.4
1985,22.6,22.3,22.3,22.1,21.5,19.6,19.5,18.4,20.6,21.8,21.7,22.4
1986,21.7,22.3,21.8,21.9,21.2,18.7,17.5,18.6,19.5,20.1,20.8,21.3
1987,21.9,21.5,21.7,21.8,19.8,18.5,19.6,17.9,20.1,21.7,21.9,22.3
1988,22.2,22.3,22.8,21.9,20,18.5,17.5,19.6,20.6,21.2,21,21.3
1989,21.2,21.5,21.2,21.1,19.5,19.4,16.8,19.2,19.8,20.5,21.5,22.1
1990,21.5,21.8,22,21.9,20.5,18.6,16.8,18.8,19,21,21.6,21.3
1991,22.2,22.5,22.3,22.2,21,19.3,17.6,17.1,20,20.4,21.1,21.7
1992,22.1,22,22.1,21.8,22.1,20.3,16.1,18.1,19.1,21,20.8,21
1993,21.3,21.1,21.6,21.3,20.3,18.9,17.9,17.3,19.2,20.6,20.8,21.1
1994,22,21.9,22.9,22.2,21.2,19.6,18.5,19.3,20.3,21,21.9,21.6
1995,22.6,22,22,21.1,19.2,19.5,18.3,18.7,20.7,21.8,21.8,22.1
1996,21.9,22.2,22.2,21.8,21.1,18,18.5,19.6,20,20.8,21.4,22
1997,21.6,21.5,21.6,21.9,20.9,18.7,19.4,18.2,21.3,21.9,22,22.2
1998,23.3,23.4,22.9,22,20.8,17.8,18.1,18.8,19.6,21.1,20.6,22
1999,21.8,21.4,21.4,20.5,19.4,18.2,17.1,17.2,20.8,20.5,21.9,20.7
2000,21.7,21.7,21.7,21.8,20.8,18.7,16.2,19,20.6,21,22.2,22
2001,21.8,21.8,21.6,22.2,19.9,17.6,18.5,19.7,20.2,21.6,22.8,21.7
2002,22.6,22.2,22.1,22,21.2,19,17.9,19.7,20.8,21.6,21.6,21.9
2003,22.4,21.9,22.5,21.8,21,20.5,18.6,17.2,20.3,21.4,21.9,22.1
2004,22.7,21.9,22.2,22.5,20.6,19.6,18.9,19.3,20.7,21.3,21.9,21.6
2005,22.6,22.2,22.4,21.9,21.6,20.7,18.4,19.9,19.6,19.9,21.8,22.5
2006,22.2,22.2,22.4,22.3,20.8,20,19.5,18.9,20.8,21.2,21.6,21.8
2007,22.3,22.5,22,22.3,19.4,19.7,18,18.4,20.1,21.3,21.9,22
2008,21.8,21.6,21.9,21.8,20,17.8,19.5,20.3,19.6,21.2,22.1,21.9
2009,21.9,21.8,22.5,22.2,21.4,18.6,19.1,19.4,20.7,21.7,22.5,21.6
