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