1901,21,20.9,21.1,22,22.9,22.9,22.4,22.6,22.5,22.4,22.1,21.5
1902,20.9,21,21,21.9,22.6,22.8,22.5,22.6,22.4,22.3,22.1,21.6
1903,21.1,20.8,21,21.9,22.9,23.1,22.5,22.6,22.4,22.4,22.1,21.5
1904,20.9,20.7,20.9,21.7,22.7,22.8,22.4,22.4,22.4,22.3,22.2,21.5
1905,20.9,20.7,20.9,22,22.6,22.9,22.5,22.6,22.5,22.3,22.3,21.5
1906,20.9,20.7,21,21.8,22.8,22.8,22.4,22.6,22.5,22.4,22.2,21.3
1907,20.7,20.5,20.8,21.6,22.6,22.8,22.5,22.6,22.5,22.4,22.2,21.5
1908,21,20.7,21,21.8,22.8,22.9,22.6,22.7,22.5,22.4,22.1,21.5
1909,20.8,20.6,21.1,21.8,22.7,22.7,22.5,22.4,22.5,22.4,22,21.3
1910,20.8,20.6,21,21.8,22.6,22.9,22.5,22.6,22.6,22.4,22.2,21.6
1911,20.8,20.7,20.9,21.9,22.7,23,22.5,22.7,22.6,22.5,22.3,21.5
1912,21,20.9,21.1,21.9,22.8,22.9,22.6,22.7,22.6,22.5,22.2,21.6
1913,20.9,20.7,20.9,21.8,22.8,22.8,22.4,22.5,22.5,22.5,22.1,21.4
1914,20.9,20.7,21.1,21.8,22.7,22.8,22.5,22.6,22.6,22.5,22.2,21.6
1915,20.9,20.6,21.1,21.6,22.8,23,22.8,22.9,22.7,22.7,22.3,21.7
1916,20.8,20.6,20.8,21.8,22.9,23,22.5,22.5,22.4,22.2,22,21.1
1917,20.5,20.4,20.4,21.6,23,23.5,22.8,22.3,22.5,22.7,22.5,21.6
1918,20.7,20.6,20.7,21.6,22.9,23.2,22.4,23,23.1,22.4,22.1,21.1
1919,20.7,20.7,20.8,21.6,22.8,22.8,22.2,22.5,22.3,22.2,21.9,21.4
1920,20.8,20.7,20.9,21.8,22.8,22.7,22.3,22.4,22.3,22.2,22,21.3
1921,21.1,21,21.1,21.3,23.1,22.6,21.8,22.5,22.5,22,22,21.4
1922,20.7,20.4,20.5,21.7,22.1,22.4,22.3,22.3,22.4,22.5,21.9,20.6
1923,20.1,19.7,19.6,21.2,22.7,22.3,22.3,22.6,22.6,22.3,22.1,20.9
1924,20.3,20.3,21,22.1,23.2,22.7,22.1,22.1,21.8,21.7,21.7,20.9
1925,19.7,20,20.4,21.6,22.7,22.9,22.5,22.2,22.2,22.6,21.9,21.4
1926,20.6,20.8,21.1,21.9,23.3,24.1,22.3,22.5,22,22.1,21.9,20.8
1927,20.2,19.7,20.6,20.9,22,22.3,21.9,22,22.2,22.1,22.1,21.4
1928,20.5,20.2,20.4,21.2,22.3,22.5,22.1,22.4,22.3,22.2,22.1,20.8
1929,19.9,20,20.2,21.2,21.7,22.4,22.2,22.8,22.2,22.4,21.6,20.8
1930,20.7,20.6,21,21.7,22.8,22.8,22.4,22.6,22.4,22.4,22.2,21.6
1931,21,20.8,21.5,22.1,23.2,23.1,22.6,22.7,22.5,22.5,22.2,21.5
1932,20.8,20.6,21.1,22,22.7,23,22.5,22.7,22.7,22.5,22.3,21.6
1933,20.5,19.9,20.4,21.8,22.7,22.6,22,22.1,22.1,22,21.5,20.8
1934,19.8,19.6,19.9,21.2,22.5,23.3,22.2,22.7,22.1,21.9,22.2,21.2
1935,21,20.7,19.9,21.5,22.3,23.1,22.2,22,22.1,22.2,22.4,20.8
1936,20.5,20.3,21.1,21.7,22.9,22.7,22.3,22.5,22.5,22.2,21.9,21.1
1937,20.2,20.1,20.8,22,22.9,23.9,23.4,24,23.9,23.4,23,22.3
1938,20.6,20.2,20.1,21,22.1,23.2,22.9,23,23.2,23.1,22.2,21.4
1939,19.9,19.7,20,21,22,22.1,22.1,22.2,22.4,22.4,22.6,22
1940,21.4,21,21.2,22.6,23.5,22.7,22.7,22.6,23.1,22.6,22.3,21.2
1941,20.9,21.1,21.5,22.9,23.4,23,22.7,22.6,22.8,22.7,22.6,21.4
1942,21.4,21.8,21.2,22.4,23,23.6,22.3,22.5,22.5,22.6,22.7,21.5
1943,21.1,21.3,20.7,22.2,22,23.1,22.5,22,22.4,22.4,22,21.3
1944,20.8,20.4,20.7,22.1,22.9,22.6,22.9,23.2,22.2,23.1,22.5,21.7
1945,20.4,20.7,20.7,21.3,23.4,23,23,22.6,22.6,22.3,22.1,21.3
1946,20.6,20,20.1,21.6,21.8,22.7,22.6,22.5,22.6,22.8,22.6,21.7
1947,20.1,20.8,20.8,21.1,22.9,23.2,22.7,22.7,23,22.8,22.2,21.4
1948,21.3,20.9,20.9,21.7,23.3,23.1,22.5,22.5,22.6,22.9,22.4,21.6
1949,20.4,20.2,20.9,21.7,22.9,22.8,22.4,23.1,22.8,22.6,22.3,21.4
1950,20.2,20.6,20.3,21.7,22.2,22.5,22.5,22.7,22.8,22.6,22.5,21.4
1951,19.9,20,20.4,21.6,22.5,22.6,22.4,22.3,22.2,22,21.8,21.4
1952,20.8,20.4,20.9,22.1,23,22.7,22.4,22.5,22.6,22.7,22,21.2
1953,20.6,20.5,20.7,21.9,22.3,22.8,22.6,22.5,22.6,22.1,22.1,21.3
1954,20.4,20.1,20.2,21.3,22.4,22.6,21.4,22.2,21.8,21.9,21.2,20.7
1955,19.9,20.5,20.1,21.1,22.4,22.7,22.3,22.9,22,22.4,22,21.6
1956,21.2,20.6,20.6,21.6,22.1,22.5,22.6,22.2,21.9,22.1,21.8,21
1957,20.1,20.1,20.2,20.9,22.2,23,22.8,23,23.1,22.8,22.2,21.5
1958,20.8,20.8,22.1,22.7,23,23.2,22.7,22.9,23.1,22.5,21.8,21.5
1959,20.7,20.7,21.3,22.3,23.1,23.1,22.6,22.5,22.6,22,21.6,22
1960,20.6,20.7,20.9,21.8,23,23.1,22.6,22.8,22.8,22.3,22,21.6
1961,21.1,20.6,21.3,22,23.1,23,23.3,23.4,22.5,22.6,22,21.7
1962,21,20.1,21,21.9,23,22.7,22.2,22,22.6,22.6,22.1,21.2
1963,20.8,21,21,22.1,23,23.2,22.9,23.5,22.8,23,22.3,21.5
1964,19.9,20.4,20.9,21.8,22.3,22.5,22.2,22.6,22.3,21.7,21.4,20.3
1965,20.1,19.8,20.3,20.7,22.5,22.5,22.8,22.7,22.4,22.3,22.3,21.9
1966,21.1,20.5,21.1,21.7,22.7,22.8,22.7,22.8,22.2,22.2,22.5,21.8
1967,21.1,20.7,20,21.4,22.5,22.7,22.1,22.1,22.4,22.1,21.7,21.1
1968,20.4,20.2,20.4,21.6,22.1,22.8,21.9,22,22,22,21.5,21.2
1969,20.9,21.2,22.2,22.8,23.9,23.3,22.9,22.4,22.7,22,22.7,22.3
1970,21.4,20.8,21.4,21.7,23.2,22.9,22.4,22.4,22.1,22.7,21.3,21.7
1971,20.6,20.2,20.3,21.1,22.1,22.5,22,21.6,21.7,21.2,21.4,20.6
1972,20.7,20.2,20.8,21.2,22.1,22.5,22.7,22.8,23,22.7,22.1,21.8
1973,21.1,21,21.5,21.9,22.8,22.9,22.9,22.2,22.2,21.9,21.9,20.8
1974,20.5,20.6,20.4,21.2,22.3,22.7,22,22.2,22.2,21.9,22.2,20.7
1975,20.4,20.2,20.8,20.9,22.4,22.6,22,22.2,22.3,21.6,21.8,21.1
1976,20.3,20.2,20.2,21.4,22.3,22.3,22.4,22.8,22.7,23.4,22.4,21.1
1977,20.8,20.9,21.6,21.4,23.1,22.7,22.2,23,22.9,23.2,22.7,21.2
1978,20.7,21.2,21.5,22.8,22.9,22.9,22.4,22.5,22.6,22.7,22.7,21.4
1979,20.3,20.8,21.6,22.5,23.2,23.4,23.1,23.3,23.1,22.8,22.9,22.5
1980,21.9,21.7,21.3,22,23.4,23.5,23.5,23.6,23.6,23,22.5,22.7
1981,22.1,22.7,22.4,22.9,23.6,23.2,23,22.9,22.7,22.8,22.7,22.7
1982,21.5,21.5,21.3,22.5,23.5,23,22.6,22.5,23.2,22.4,22.3,22
1983,21.7,21.3,22.4,23,23.2,23.2,23.2,23.2,23.5,22.6,22.4,21.9
1984,21.4,21.5,21.6,22.3,22.6,23.4,22.8,23.2,23,22.5,21.9,21.7
1985,20.4,20.4,21.4,22.2,23.2,23.2,22.4,22.6,22.2,22.2,22.2,21.4
1986,20.6,20.2,20.7,22.3,22.7,22.4,22.4,23.1,22.8,22.7,22,21.5
1987,21.3,21.3,22.5,23.6,24.6,24.4,23.6,24.4,23.7,24.2,23.9,23.4
1988,22,22.3,22.3,23.4,24.5,24.6,24.1,24,23.3,23.3,22.8,22.2
1989,21.7,21.5,21.5,22,23.1,24,23.5,24.1,23.7,23.4,22.9,21.4
1990,21.7,21,21.9,22.9,23.5,23.7,23.4,23.2,24,23.8,23.3,22.3
1991,20.8,21.2,21.6,22.4,23.3,23.2,23,23.6,22.1,21.7,22,21.4
1992,20.7,20.6,20.8,22.8,23.6,22.9,22.4,22.5,22.1,22.5,22.3,21.3
1993,21.2,20.8,21.7,23.1,24.2,24.1,23,22.5,22.5,22.5,22.2,21.8
1994,21.5,21.5,21.7,22.1,23.2,22.1,22.3,22.8,22.5,22.4,22.2,21.7
1995,20.8,21,22.1,22.9,23.7,23.3,23.2,23,23.2,22.5,23,22.3
1996,21,21.9,21.5,22.1,22.4,23,23.1,22.6,22.7,22.6,22.2,22.3
1997,21.4,21.2,20.8,21.7,22.7,23.3,23.1,23.1,23.5,23.6,22.8,22.5
1998,22,22.6,22.6,23.8,23.6,23.8,23.3,24,23.4,23.1,22.7,22.5
1999,21.6,21.5,21.6,22.4,23,23.4,23.4,23.1,23,22.5,23.4,22.8
2000,21.9,21.6,21.4,21.8,22.7,22.8,22.8,23.2,23,22.9,22.4,21.9
2001,21.3,20.8,21.3,22,23.2,23.3,22.5,23.8,22.6,23.1,23.1,22.9
2002,21.9,21.5,21.7,22,22.6,23,22.6,23.5,23.1,22.5,22,22.2
2003,21.4,21.5,21.7,23.4,23.3,23.5,23.6,23.1,22.4,23,22.9,22.1
2004,21.5,20.4,21.7,22.6,22.4,22.9,22.9,23.2,23,22.6,22.4,22
2005,22.4,22.2,21.7,23.4,23.7,23.5,23.3,23.5,23.5,22.9,22,21.5
2006,20.4,21,21.3,22.2,23.5,23.6,23.1,23.3,23.2,23.1,22.6,22.4
2007,21.3,19.8,22.4,22.8,23.6,23.1,23.8,22.5,22.4,22.7,22.1,21.1
2008,21.8,20.5,20.6,22,23.2,24.2,23.2,23.1,23.6,22.9,22.8,22.5
2009,21.3,21,21.7,22.2,23.8,23.6,23.7,23.5,24.4,22.8,23.6,23.1
