1901,21.7,21.6,22.4,22.4,23.2,23.4,23,23,22.3,22.5,22.4,22.2
1902,20.1,21.3,21.4,22.2,22.8,23.5,22.7,22.7,22.2,22.3,22,22.5
1903,21.2,20.3,22.1,23,23.2,22.4,22.5,22.3,22,21.9,21.1,19.8
1904,19.1,19.5,21.1,21.8,22.7,22.9,22.5,22.8,22.6,22.4,21.5,21
1905,21.5,21.5,21.7,23,22.8,22.9,22.7,23.1,22.6,22.5,22.3,23.8
1906,22.1,21.7,21.8,23.5,23.6,23.3,22.8,23.1,22.9,22.2,21.5,21.9
1907,20.6,20.8,20.9,22.2,22.4,22.7,22.5,22.4,22.5,22.2,22,20.5
1908,20.6,20.4,21.1,22.4,22.6,22.9,22.5,22.5,22.4,22.3,21.1,21.6
1909,20.7,20.7,21.2,22.2,22.5,22.9,22.3,22.7,22.5,22.4,21.3,21
1910,21.1,20,20.7,22.2,22.6,22.7,22.6,22.7,22,22.1,21.8,20.8
1911,20.9,21.1,21.8,22.7,23.2,23.4,23.3,23.3,23,22.7,23.6,23.1
1912,21.7,21.6,22.6,23.3,23.8,23.4,22.9,22.9,22.8,22.6,22.1,22.4
1913,21.3,21.6,22.4,23,23.2,22.9,22.7,23.2,22.8,22.8,22.4,22.5
1914,21.1,21.5,22.1,23.1,24.1,23.1,22.9,23.1,23.2,23.1,23.3,23.1
1915,21.7,22,22.3,23.2,23.5,23.1,23.1,23,23,22.7,22.5,21.4
1916,20.5,21.1,22.2,23,23.1,23.1,22.6,22.9,22.8,22.6,22.1,21.7
1917,20.7,20.7,21.2,23,22.7,23,22.7,22.6,22.5,22.2,22.3,21.7
1918,20.1,19.4,21.4,22.2,22.5,22.8,23.2,23.1,23,22.5,23,22.4
1919,22,21.7,22.5,23.2,23.6,23.3,22.9,23.4,23.1,22.9,22.4,22.4
1920,20.8,20.9,22.3,23,23.4,23.5,23.1,23,22.9,22.4,22.9,21.8
1921,21.2,20.6,21.9,22.8,22.7,22.7,22.6,23,22.6,22.3,21.9,22.3
1922,21.6,21.1,21.1,22.1,22.9,23,22.5,22.6,23,22.5,22.3,22
1923,20.9,20.4,21.5,22.5,22.7,23.1,22.1,22.5,22.2,22.4,22.6,22.7
1924,21.9,21.1,22,22.6,23,23,22.5,23.1,22,21.5,22.5,21.2
1925,20.9,20.1,21.3,22.1,23.1,23,23,22.8,22.8,22.1,22.3,21.4
1926,21.1,21.1,21.6,23.5,24,23.5,22.9,22.8,22.6,22.2,22.3,22.3
1927,21.2,20.9,22.1,22.2,22.4,22.9,22.8,22.8,22.8,22.1,22.3,22.2
1928,21.7,21.1,21.5,22.1,22.9,22.9,22.8,22.7,22.5,22.1,22.2,22.8
1929,21.2,20.5,20.8,22.2,22.9,22.4,22.8,22.9,22.8,21.9,22,22.5
1930,20.5,20.2,20.9,21.9,22.9,22.7,23.2,23.5,23.1,22.7,22.6,22.2
1931,21.8,20.3,21.6,23.2,23.4,23.5,23.2,23.8,23,22.5,21.7,21.6
1932,20.2,20.5,20.9,22.4,23,23.1,23.2,23.2,22.8,22.9,22.7,21.4
1933,21.6,20.3,21.5,22.8,23.2,23.1,23.1,23.7,22.7,22.6,21.9,21.3
1934,20.5,20.3,21.1,22.3,23.7,23.2,23.3,23.3,23.3,22.6,22.5,21.3
1935,21.1,20.5,22.3,22.7,23.2,23.1,23.4,23.3,22.9,22.9,22.6,22.1
1936,21.4,21.1,21.2,23,23.7,23.1,23.1,23,23,22.2,22.2,22.6
1937,21.4,20.6,22.1,23.1,22.7,23,22.7,23.1,22.8,22.1,22.4,22.2
1938,21.6,21.5,22,23,23.1,23.3,22.8,23.2,23.1,22.7,22,22.1
1939,23.2,20.9,21.7,23,23.5,22.7,23.3,23.4,22.8,22,22.6,20.9
1940,19.4,20.4,20.9,23,23.2,23.7,22.9,22.9,23.3,22.7,22.8,22.4
1941,21.8,21.5,21.7,23.9,23.7,23.3,22.8,23.4,23.2,23,23.2,22.6
1942,20.4,21.2,21.9,22.8,23.1,22.8,22.4,22.4,22.5,22.2,21.7,21.8
1943,19.8,19.6,21,21.2,22.4,22.1,21.8,21.6,21.7,21.8,21.4,21.3
1944,20.8,20.8,21.2,22.3,22.5,22.2,22.2,22.5,22.5,22.3,21.6,21.2
1945,21,21.2,21.3,21.9,22.4,22.6,22.6,22.5,22.1,21.9,22,21.9
1946,20.7,20.8,21.6,22.1,22.6,22.8,22.1,22.3,22.2,22,21.9,22.6
1947,21.7,21,21.9,22.5,22.9,22.7,22.2,22.4,22.2,22.2,21.6,21.7
1948,22.1,21.5,22.8,23.5,23.8,24,23.4,23.9,23.4,23.2,22.5,21.8
1949,20.4,21.6,22.8,23.3,23.9,23.5,23.3,23.5,22.9,23.1,22.6,22.9
1950,21.8,21.7,22.8,23.1,23.8,23.4,22.8,23.1,22.6,22.8,23,22.1
1951,19.8,19.7,20.5,22,22.4,22.5,22,22.6,22.2,21.9,21.8,21
1952,20.5,20.5,21.4,22.4,23.2,22.8,22.1,22.2,22.2,22.3,21.4,19.8
1953,20.9,21.4,21.1,22.6,22.8,22.8,22.3,22.5,22.3,22.2,21.6,20.6
1954,20.7,19.9,21.4,22.6,22.9,22.7,22.3,22.6,22.2,21.5,20.6,20.8
1955,20.5,19.5,19.9,21.7,22.7,22.6,21.8,22.2,22,21.9,21.2,19.6
1956,18.6,19.4,20.2,22.1,22.1,22.3,22.2,22.6,22.5,21.8,21.1,20.4
1957,19.5,19.7,21,23,23.2,23.2,22.8,22.6,22.6,22.3,21.8,21.7
1958,20.4,19.9,20.7,21.5,23.1,23,22.6,22.6,22.6,22.4,21.6,20.3
1959,20.8,20.2,21.4,22.3,22.8,23.4,22.8,22.6,22.2,22.4,22,22.2
1960,21.2,20.9,21.3,22.8,23,22.9,22.7,23.3,22.3,22.3,22.1,21.8
1961,20.7,21.2,22,22.7,23.2,22.6,21.9,22.3,21.9,21.8,22.1,22
1962,21.6,20.3,21.5,21.8,23.1,22.2,22.5,21.7,22.5,22.2,21.9,21.6
1963,20.3,20.2,20.4,20.9,21.8,22.5,22.5,22.7,22.6,22.7,22.4,21.7
1964,21.3,21.5,20.9,21.6,23.2,22.7,22.5,22.4,22.6,21.7,21.3,21.1
1965,19.2,20.8,20.9,22.3,22.8,23.1,22.4,22.4,22.3,21.9,22.2,22.3
1966,21.3,21.1,21.8,22.9,22.6,22.4,22.3,22.6,21.8,22.1,22.2,22
1967,21.1,20.9,20.8,21.8,22.9,22.5,22.2,22.3,22.1,22.1,21.9,21.2
1968,19.8,19,20.5,21.5,22.7,22.9,22.7,22.8,22.3,22,21.5,22.1
1969,21.2,20.6,21.1,22.6,23.2,23.1,23,22.6,22.4,22.5,22.2,21.7
1970,21.4,20.8,21.7,23.2,23.2,23.2,22.5,23,22.3,22.2,22.2,21.9
1971,20.7,20.2,21.3,21.5,22.5,22.5,21.9,22.1,22.2,22.2,21.1,22.2
1972,20.6,20.5,21.2,21.9,22.2,22.8,23,22.3,22.5,22.6,22.6,22.3
1973,21.3,21.3,21.8,22.6,22.8,23.4,22.7,23,22.4,22.4,22,21.7
1974,19.7,20.5,21,22,22.2,22.8,22.3,22.9,22.1,22,22.1,21.2
1975,21.8,21,21.9,22.3,22.5,23,22,22.6,22.3,21.9,22,20.8
1976,19.9,19.4,20.7,21.9,22.5,22.3,22.8,22.4,22,22.5,21.8,21.4
1977,20.9,20.9,21.1,21.7,22.4,23.1,23.1,22.5,23,23.1,22.6,21.9
1978,21.5,21.5,21.7,22.7,23.7,23.1,22.9,22.9,22,22,21.8,21.9
1979,21.1,21.2,21.5,23.2,23.3,23.6,22.9,23,22.7,22.2,22.4,21.4
1980,20.7,20.5,22.1,23.1,23.2,23.1,22.8,22.7,22.3,22.5,22.3,21.6
1981,19.7,20.4,21.2,22.6,22.4,22.5,22.2,21.8,22.4,21.8,21.5,21.4
1982,20.3,20.5,20.7,22.7,22.7,22.9,22,21.9,22,21.5,21.6,21.5
1983,21.1,20.4,22,22.4,22.8,22.7,22.4,22.6,22.1,22,21.3,21.4
1984,20.6,21.2,21.5,22.4,22.3,22.4,22,22,21.4,21.3,21.3,21.6
1985,20.4,21.3,21.4,22.3,22.3,22.1,21.2,22.1,21.6,21.8,21.7,21.2
1986,20.3,20.8,21.1,22.1,22.5,22.4,22.1,22.7,22.5,21.8,21.7,21.7
1987,21.4,20.4,21.6,22.2,22.1,23.3,22.7,22.6,22.9,22.4,21.9,21.7
1988,21.4,21.8,22.2,22.9,23.2,22.3,22.4,22.5,22.6,22.1,22.1,21.4
1989,21.4,19.6,20.6,22.2,22.4,22.3,23.1,22.4,22.8,21.9,22.6,21.3
1990,20.8,21.3,21.6,23.2,22.7,23.2,21.9,22.4,22.2,21.9,22,21.9
1991,21.3,21.1,21.3,22.1,22.9,23.1,23.2,22.5,22.8,21.9,21.7,21.6
1992,20.7,20.8,21.1,22.9,23,22.7,22.1,22.6,22.2,21.6,21.2,21.3
1993,20.9,20,21.8,22.3,22.1,22.5,22.4,22.9,21.4,21.7,21.8,22
1994,21,21.2,22.1,22.5,23.3,22.7,22.6,21.8,22.3,22.1,22.2,22
1995,21.4,20.8,21.7,22.6,22.2,23.2,22.7,22.7,22.3,22.3,21.7,21
1996,20.9,21.8,22,22.7,22.9,23.5,23.1,23,22.6,21.9,22.5,21.6
1997,20.3,21.7,22.2,22.4,22.9,22.6,23,22.8,22.7,22.4,21.9,23.1
1998,22.5,22.4,22.6,22.4,23.7,24.2,23.6,22.8,22.7,22.9,22.4,22.1
1999,21.5,21.9,22.5,22.7,23.4,23.4,22.6,22.7,22.9,22.2,22.4,21.1
2000,21.9,21.4,22.8,23,22.6,23.3,22.7,23.2,22.5,22.8,22.9,22.4
2001,22.2,21.6,22.4,23.2,23.7,23.2,23.2,23.4,23.1,23,22.4,22.7
2002,22.2,22.2,22.8,22.8,24,24.3,23.4,23,22.7,22.2,23.3,23.5
2003,22.3,22.5,22.3,23.7,24.2,23.9,23.5,23.7,23.3,22.6,22.9,22.5
2004,22.1,22.1,23,23.9,23.8,24,23.7,22.9,23.5,22.7,23.4,22.6
2005,22.3,22,22.9,24,24.1,24.1,23.6,23.6,22.6,22.5,22.5,22.7
2006,21.9,22.3,22.9,23.2,23.3,23.5,23.9,23.5,23.2,23.1,22.8,22.8
2007,22.4,21.8,22.1,23.4,23.4,22.7,23.1,23.3,22.7,22.2,22.2,22.3
2008,22.4,21.5,22.2,22.9,22.5,23.3,23.2,23.3,22.7,22.7,22.6,22.5
2009,21.2,21.3,22,22.8,22.8,23.2,23.1,23.4,23.3,22.3,22.7,22.9
