1901,21.1,21.6,21.8,22.2,22,21.8,21.9,21.3,21.5,21.2,21.1,20.5
1902,21,21.5,21.9,22.2,22,21.8,21.9,21.2,21.7,21.3,21.2,20.5
1903,21.1,21.8,21.9,22.1,21.9,21.9,22,21.3,21.6,21.2,21,20.3
1904,21.1,21.6,21.8,22.2,22,21.8,21.9,21.3,21.5,21.2,21.1,20.5
1905,21.1,21.6,21.8,22.2,22,21.8,21.9,21.3,21.5,21.2,21.1,20.5
1906,20.9,21.4,21.7,22.1,22,21.8,21.9,21.3,21.6,21.2,21.1,20.4
1907,21.2,21.6,21.8,22.2,22,21.8,21.8,21.2,21.4,21.2,21.2,20.4
1908,21,21.5,21.8,22.3,22.1,21.8,21.9,21.3,21.5,21.1,21,20.5
1909,21,21.6,21.9,22.2,22.1,21.8,22,21.3,21.5,21.2,21,20.5
1910,20.9,21.5,21.5,22,21.9,21.7,21.8,21.3,21.5,21.2,20.9,20.3
1911,21.1,21.6,21.8,22.3,21.8,21.6,21.9,21.3,21.5,21.3,21.2,20.5
1912,21.1,21.4,21.9,22.4,22,21.7,21.9,21.3,21.5,21.2,21,20.5
1913,21.2,21.8,21.8,21.9,21.8,21.6,21.8,21.3,21.4,21.1,21,20.4
1914,21,21.6,21.5,22.1,21.8,21.7,21.9,21.3,21.4,21.2,21,20.6
1915,21,21.5,21.5,21.9,22.2,21.9,22,21.4,21.6,21.3,21.1,20.5
1916,21.4,21.4,21.6,22,21.9,21.7,22,21.2,21.4,21.1,20.9,20.5
1917,21.1,21.6,21.8,22.2,22,21.8,21.9,21.3,21.5,21.2,21.1,20.5
1918,20.9,21.8,21.9,22.2,21.9,21.7,21.9,21.3,21.5,21.4,21.1,20.5
1919,21,21.6,21.8,22.1,21.9,21.7,21.9,21.3,21.5,21.2,21.2,20.5
1920,21.1,21.5,21.8,22.4,22,21.7,21.9,21.2,21.5,21.2,21,20.5
1921,21,21.6,21.9,22.2,21.6,21.7,21.8,21.3,21.5,21.2,21.2,20.6
1922,21.2,21.7,21.9,22.4,22,21.8,21.8,21.4,21.5,21.2,21.2,20.6
1923,21.1,21.7,22,22.4,22,21.9,21.8,21.3,21.6,21.2,20.9,20.6
1924,21.3,21.5,21.8,22.4,22.2,21.7,21.9,21.4,21.5,21.2,21,20.7
1925,21.4,21.7,21.7,22.2,22,21.9,21.8,21.4,21.6,21.4,21.3,20.7
1926,21.2,21.6,21.8,22.5,22.1,21.8,21.8,21.3,21.5,21.2,21.1,20.6
1927,20.9,21.7,21.6,22.1,22,21.8,21.8,21.3,21.5,21.1,21,20.3
1928,20.8,21.6,21.7,22.2,21.8,21.7,21.8,21.2,21.5,21.1,20.9,20.3
1929,21.2,21.8,21.9,22.2,22,21.7,21.7,21.1,21.4,21,21.2,20.4
1930,21.2,21.6,21.7,22.1,22,21.6,21.8,21.3,21.5,21.1,20.9,20.3
1931,21.5,22,22.1,22.5,21.9,21.9,21.6,21.5,21.9,21.7,20.8,21
1932,21.7,22,21.7,22.4,22.2,21.6,21.6,21.3,21.8,21.2,20.4,20.8
1933,21.7,22.1,21.6,22.7,22,21.6,21.9,20.9,21.4,20.9,20.1,19.9
1934,21.1,21.2,20.8,22.4,21.5,21.5,21.6,21.7,21.8,21.1,21.1,20.8
1935,20.6,20.7,21.7,22.4,21.8,21.7,22,21.2,21.6,21.2,20.9,20.6
1936,21.9,22.5,22.7,22.6,22.1,21.8,21.8,21.6,21.8,21.5,21.6,20.5
1937,22.1,22.2,22.3,22.7,22.1,21.9,22.1,21.3,21.2,21,20.4,20.6
1938,21,21.3,21.6,21.3,21.7,21.5,21.6,21.1,21.3,20.9,20.8,19.8
1939,21.3,21.4,21.2,21.9,22,21.5,21.8,21.5,21.1,21.2,20.6,21
1940,21,21.3,21.8,21.9,21.9,21.6,22.2,21.8,21.7,20.9,20.9,20.4
1941,21.4,22,22.6,22.7,22,22.3,21.9,21.6,21.5,21.3,20.8,20.7
1942,20.5,22.1,21.8,22.4,22.5,21.7,21.7,21,21.2,20.9,20.7,20.4
1943,20.7,20.4,20.5,21.3,21.5,21.3,21.7,21,21.7,20.6,20.3,20.1
1944,20.5,21.4,21.9,22.4,21.3,21,22,21.2,21.2,20.5,21,19.8
1945,21.1,21.9,21.9,21.6,21.1,22,21.8,21.1,21.4,20.7,20.5,20.3
1946,21.1,21.4,21.5,21.8,22.2,22,21.9,21.3,21.3,20.7,20.9,20.3
1947,21.3,21.3,22,22.1,21.5,21.4,21.4,20.7,21,21,21.1,20.1
1948,20.7,21.4,21.9,21.2,21.5,21.3,21.1,20.8,21.2,21.1,21.3,20.3
1949,20.2,21.2,21.3,21.9,21.9,21.4,21.4,20.7,21,20.9,19.9,19.6
1950,20.5,20.4,20.8,21.2,21.3,20.9,21,20.5,21.4,20.4,19.9,19.4
1951,21.1,20.5,21.6,22.6,22.5,22.7,22.6,22.2,22.5,21.3,21.2,20.8
1952,21.4,21.2,21.1,21.9,21.4,21.7,21.2,22.4,22.9,21,22.3,20
1953,20.5,20.5,21.3,22.6,21.9,22.2,22.2,21.7,21.7,21.5,21,20.8
1954,21.1,20.9,21.5,21.5,21,20.4,20.8,20.6,21.2,19.8,22.5,19.6
1955,20.6,21.3,20.9,21.5,21.5,21.5,20.9,20.8,21.2,20.2,20.7,19.7
1956,20.9,22.8,23.6,23.7,22.3,22.2,22,22,21.9,22,21.3,20.8
1957,21.9,22.9,22.3,23.1,23.1,23.4,22.6,22.3,22.7,22.1,21.8,20.6
1958,21.6,22.1,23.1,23,23.2,22.8,22.8,22.1,22.7,22.3,21.7,20.9
1959,20.6,22.3,22.5,21.9,22.6,22.1,23.1,22,22.9,21.9,21.4,20.7
1960,21.7,22.1,21.9,23.1,22.6,22.6,22.7,22.2,22.6,21.7,21.5,20.4
1961,23.1,22.8,21.7,22.8,21.8,21.6,21.2,21.4,20.4,20.8,21.3,21.4
1962,22,22.2,21.4,22.3,21.1,20.9,20.5,20.9,21.3,20.2,22.3,21.8
1963,21.9,22,22.2,22.2,22,22.2,22.3,22,21.6,21.6,22.4,22
1964,23,22.4,21.7,22.8,22.3,21.1,20.9,20.8,21.1,20.6,21.3,21.8
1965,22.2,22.5,21.3,22.7,22.1,22.8,23.1,21.2,21.8,21.9,23,22.1
1966,23.6,22.5,23,22.1,22.2,22.1,22.4,22.3,22.2,20.9,21.1,20.1
1967,21.6,21.6,21.6,22.3,23.2,21.6,21.9,21.4,21.2,21.6,20.9,20.3
1968,21.4,20.9,21.7,21.7,21,21.1,22.1,21.8,21.5,21.2,21,20.1
1969,19.5,20.4,22.9,21.7,22.6,21.8,22.4,20.7,21.9,20.8,20.7,20.7
1970,20.6,21.5,21.8,22,21.5,21.8,20.8,20.2,21,20.6,19.7,19.2
1971,20.6,21.1,21.3,21.2,21.4,21.4,21.4,20.1,20.1,20.7,20.3,20
1972,20.6,21.3,21.2,22.1,21.7,22.1,22.8,21.9,21.9,21.8,21.8,21.5
1973,21.8,22.3,22.6,22.6,22,21.6,21.5,20.4,20.7,20.3,21,19.4
1974,20.6,20.4,20.8,22,21,20.9,21.4,21.2,20.1,20.5,21.1,20.2
1975,20.8,19,19.7,19.9,20.6,20.6,19.7,19.3,20,20.3,20,19.1
1976,20.3,20.6,21.1,20.1,20.8,20.7,21.5,20.6,21.1,20.6,21.5,20.9
1977,18.9,20.1,20.3,20.8,21,21.1,21.2,20.4,20.9,20.6,20.1,21.1
1978,21.3,21.5,22.3,21.8,22.2,22,21.6,21,21.5,21.2,21.1,19.9
1979,20.1,21.5,22.5,21.6,22.1,21.9,22.2,21.2,21.3,21.6,20.6,20.5
1980,20.6,20.8,22.8,21.6,22.4,22.2,22.1,21,21,21.6,20.1,19.1
1981,19.4,20.8,22.4,22.3,21.8,21.5,21.9,21,21.9,21.3,20.4,19.6
1982,19.9,21,22.1,21.5,21.5,22,22.7,23.3,22.3,21.8,21.3,20.9
1983,21.5,21.8,22.8,22.7,23.7,22.8,23,22.3,21.9,21.5,20.7,19.7
1984,19.5,20.8,22.2,21.5,22,22.1,21.2,21.2,21.2,21.5,20.1,19.9
1985,19.6,21.2,22.3,22.1,22,22.2,21.6,20.9,21.6,21,20.8,19.9
1986,19.9,22.3,21.5,22.1,22.1,22.3,23.1,22.4,22.2,21.4,21.4,20.7
1987,21.2,22,22.5,23.3,22.7,22.7,22.5,22.3,22.7,22.5,22.4,21.2
1988,21.1,22,22.5,22.5,22.5,21.8,22.2,21,21.9,21.6,20.7,19.9
1989,20.9,20.9,21.2,22.1,22.1,21.8,22.3,21.4,21.6,21.6,20.6,19.6
1990,21.5,21.3,22.1,22.5,22.8,22.8,22.1,22.1,22.4,21.5,21.5,20.8
1991,21.1,21.7,23.6,22.2,23.5,22.6,24.1,23.1,23.6,22.8,21.4,20.5
1992,20.8,21.7,23.7,23.3,24.1,23.7,23.3,21.9,22.6,22.8,19.9,19.9
1993,19.8,20.9,22.9,22.4,23.1,23.6,23.9,23.1,22.6,23.1,21.1,21.2
1994,20.6,21.1,23.3,22.3,23.4,23.4,23.8,23,23.7,22.9,20.4,21.1
1995,21.4,22,23.2,21.7,22.9,23,23.3,22.2,23,22.2,20.3,19.5
1996,20.3,21.3,22.9,21.3,21.8,22,22.5,21.9,21.9,21.3,19.7,20.5
1997,19.6,21.5,22.5,22.1,23.2,22.7,23.8,23.6,22.7,22.7,21.1,21
1998,21.1,21.8,23.9,23.6,24.5,23.4,22.4,22.1,22.1,21.9,21,19.5
1999,20.2,21,22,21.6,21.9,21.9,22.2,21.3,21.2,21.1,20.5,20.2
2000,20.1,20.9,22,22,22.2,22.2,22.5,22.2,21.8,22.2,21.8,20.9
2001,21.4,22.4,22.3,23.2,23.2,23.1,23,22.9,22.3,22.6,21.9,21.6
2002,22.4,23.1,23.4,23.6,22.8,23.1,23.5,21.3,22.6,22.3,22.2,21.7
2003,22.5,23.4,23,23.5,22.9,22.4,23,22.4,22.7,22.3,22,20.9
2004,22.1,23.1,23.3,23.9,23,23.6,22.7,22.2,22,21.9,21.6,21.3
2005,21.7,22.3,22.9,23.4,22.7,22.4,22.8,22.1,22.5,21.1,21.2,20.7
2006,22,22.1,22.5,22.9,22.7,22.7,22.8,22.6,22.7,22.6,21.2,21.3
2007,22.3,22.8,22.8,23,22.2,22.5,22.6,21.5,22,21.2,21.2,20.7
2008,21.9,22.1,22.4,22.6,22.3,22.5,22.1,21.5,22.3,21.6,21.3,21
2009,22,22.4,22.2,23.6,22.6,22.7,23.4,22.5,23.3,22.3,21.8,21.8
