1901,21.4,22.7,22.5,22,21,20.2,20.4,20.2,20.8,20.9,20.5,20.8
1902,20.9,21.6,21.8,21.1,19.8,20.6,21.3,21.4,21.4,20.9,20.4,20.4
1903,22.1,22.6,22.7,22.5,21,20.4,20.8,20.2,20.6,20.6,19.7,20.2
1904,20.6,22.1,22.2,22.3,21,20.9,20.1,20.4,20.6,20.5,20.1,20.1
1905,21.2,21.6,21.8,21.6,20.6,20.5,20.4,19.9,20.6,21.2,20.9,21
1906,20.9,22.8,22.3,21.9,21.7,21.3,20.4,20.5,21,20.7,19.7,19.1
1907,20.3,22.4,22.7,22.3,21.4,20.8,20.2,19.8,20.4,20.6,19.8,18.6
1908,20.9,21.4,23.2,22.9,22.7,21,20.3,19.8,21.5,22.8,19.3,19.2
1909,20.1,21.3,21.6,20.7,20.5,19.8,20.4,20.4,20.6,20.6,19.8,20.6
1910,21,22,22.6,22.6,21.7,20.8,21.2,20.5,20.5,20.6,20.4,21.1
1911,21.6,22,22.9,22.2,21.6,20.9,20.5,20.3,20.7,21.3,20.8,21
1912,20.9,21.8,21.9,21.6,20.8,20.4,19.9,19.9,20.5,20.5,20.2,20.2
1913,20.9,21.8,21.4,21.7,20.6,20.1,20.3,20.1,20.7,20.5,19.4,19.8
1914,21.8,22,22.2,21.4,20.6,20.6,20,19.9,20.5,20.6,20.4,20.5
1915,21.5,22.1,22.1,21.7,20.7,20.2,20,19.9,20.5,20.6,20.4,20.3
1916,20.5,21.9,22,21.9,20.6,20.1,19.8,19.7,20.2,20.2,20.2,20.2
1917,21,21.9,21.6,21.5,20.7,20.1,20,19.8,20.1,20,20,20.2
1918,20.7,21.5,21.5,21.3,20.6,20.2,20.5,19.8,20.7,20.7,20.3,20.5
1919,22,22.5,22.2,21.2,20.9,20.3,20.2,20.4,20.8,20.9,20.2,20.3
1920,20.8,21.2,21.4,21.2,20.5,20.1,20.1,19.5,20.2,20.3,19.8,19.8
1921,20.4,21,20.9,22.1,20.7,20.5,20.3,19.7,20.5,20.7,20.3,20.9
1922,21.3,22,22.1,21.9,20.7,20.6,19.9,19.8,20.3,20.6,20.6,20.5
1923,22,21.6,22.3,21.6,20.5,20.2,19.8,19.7,20.6,20.5,20,20.3
1924,21.4,22.2,22.5,21.9,20.7,20.3,19.9,19.9,20.4,20.8,20.3,20.7
1925,20.5,21.4,22.3,21.9,20.6,20.1,20.1,19.9,20.8,20.8,20.4,20.7
1926,20.9,21.9,21.8,21.7,20.9,20.4,20,20.2,20.9,20.7,20.1,20.5
1927,21.3,21.8,22,21.5,20.9,20.4,20,20,20.5,21,20.4,21.1
1928,21.8,22.2,22.6,22,20.8,20.4,20,19.9,20.7,20.7,20.2,20.6
1929,21.2,22.4,22.2,22,20.6,20.3,19.6,19.8,20.5,20.6,20.3,20
1930,20.6,22.1,21.8,21.7,20.7,20,19.8,19.8,20.6,20.6,19.8,20.5
1931,21,22.3,22.1,21.8,20.7,20.4,19.8,19.8,20.3,20.7,20.3,20.5
1932,21,22,22,21.8,20.4,20.2,19.7,19.7,20.5,20.8,20.4,20.3
1933,21.6,22.5,22.5,21.7,20.9,20.3,20,19.8,20.5,20.8,20.8,20.8
1934,21.3,21.8,22.3,22,20.7,20.2,19.7,19.9,20.6,20.8,20.5,20.3
1935,21.4,22,22.5,21.9,20.8,20.2,19.9,19.8,20.5,20.7,20.2,20.6
1936,21.2,22.2,22.5,22.1,21,20.3,19.9,19.8,20.5,20.8,20.4,20.6
1937,21.1,22.1,22.3,22,20.8,20.3,19.8,19.8,20.5,20.8,20.3,20.7
1938,21.3,22.2,22.2,22.5,20.9,20.3,19.7,19.7,20.4,20.7,20.4,20.7
1939,21.3,22.1,22.4,22.1,21,20.4,20,20,20.5,20.8,20.4,20.8
1940,22.2,22.9,21.8,22,21.7,21.4,20.2,20.3,21.4,21.3,21.1,22
1941,21.6,22.9,22.6,22.8,20.9,20,20,19.8,20.7,20.8,20.1,19.9
1942,21.5,22.8,22.4,22.7,20.1,20.4,19.5,19.3,20.5,21,21,20.6
1943,21.2,21.1,21.7,22.1,20.9,20.2,19.5,19.3,20.2,20.4,21.2,21.4
1944,21.1,23.3,21.8,22.7,21.2,20.5,19.6,19.8,20.1,20.5,20,20.5
1945,21.5,21.2,22.3,22.9,21,19.8,19.6,19.2,20,20.2,20.1,20
1946,22,23.3,22.7,21.8,21.3,19.6,19.8,19.3,20.4,20.8,20.5,21.3
1947,22,22.5,22.2,20.9,20.9,21.2,20.2,20,20.5,21.2,21.9,21
1948,22.3,22.9,22,22.1,21.3,19.2,19.5,19.2,19.9,19.9,19.4,20
1949,21.2,22.6,22.8,23.2,20.9,19.6,19,19.2,19.3,20.6,20.7,20.3
1950,21.2,20.9,22.6,22,21.1,19.8,19.2,18.8,19.3,19.2,19.9,20.5
1951,21.7,22.7,22.6,20.6,21.4,21,19.7,20,19.5,21.4,20.8,20.5
1952,21.9,22.5,23.2,21.8,21.7,20.9,20.2,19.8,21.2,20.9,21.4,21.9
1953,22.8,23,23.4,22.3,21.8,20.8,20,20.2,20.3,20.1,21.3,21.1
1954,22,23.5,23.5,22.2,21.3,19.9,19.2,19.5,20.1,20.1,20.8,21.2
1955,21.4,22.7,23.4,21.9,21.2,20.3,19.8,19.4,20.5,21.2,20.6,20.3
1956,19.7,22.2,22.2,21,20.2,19.3,19.1,19.3,20,20,20.2,20.1
1957,21.2,21.3,20.7,21.8,20,19.7,19.8,19.7,20.7,20.7,20.9,21.2
1958,21.9,21.8,23.7,22.5,21.3,20.1,19.5,20.2,21,20.9,20.9,20.8
1959,21.5,21.3,21.5,22.5,20.6,20.4,20.2,20.2,20.7,21,20.7,20.8
1960,21,21.9,21.6,21.9,21.3,20.7,20,20.5,21.1,20.9,20.6,21
1961,21.5,22.1,22.1,22.1,22.1,20.8,19.8,18.3,19.6,18.9,18.1,18.4
1962,19.5,20.7,21.4,21.7,20.2,19.8,19.7,19.4,20.2,19.8,19.8,20
1963,21,22.2,22.3,20.7,20.5,20.4,19.9,19.5,20.3,21.1,20,19.6
1964,20.5,22,23.1,21.9,20.9,19.8,19.3,19,19.8,19.6,20.2,19.1
1965,21,21.6,21.8,21.1,20.9,20,19.6,19.4,20.5,20.5,19.7,21.2
1966,21.2,22.2,22.3,21.5,20.8,20,19.9,19.4,20.4,20.8,19.5,20.4
1967,21,22.7,22.5,21.8,20.3,19.4,18.7,18.7,19.7,20,18.8,20.3
1968,20.5,20.7,21.5,21.2,19.8,19.4,19.5,19.6,20,20.2,19.7,20.2
1969,21.4,20.2,20.8,21.9,20.6,19.9,19.5,19.4,20.2,20,20.1,21.1
1970,20.8,22.6,22.3,21.1,20.8,20,20.1,19.6,20.5,20.4,20.7,20.4
1971,21.2,22,22.4,21.9,19.9,19.4,19.4,19.4,20,20,19.8,19.6
1972,21.2,21.1,22.6,22.1,21.2,20.2,20.3,20.4,20.6,20.9,20.3,21.3
1973,22,23.8,24.3,22.9,21,20.6,19.8,19.6,20.4,20.8,20.4,20.2
1974,21.3,22.4,21.5,22.5,20.1,20,19.3,19.6,19.9,20.9,20.3,20.4
1975,21.3,23.1,23.1,22.5,20.5,19.3,19.1,18.7,19.9,20.1,20.3,20.3
1976,21,22,22,22,20.7,20.9,19.6,19.4,20.5,20.7,20.3,20.8
1977,21,22.1,21.2,22.5,21.1,20.3,20,20,20.6,20.6,19.6,20.4
1978,21.5,22.3,22.4,22.7,21,20.4,19.7,19.9,20.2,20.5,20.5,20.5
1979,20.8,21.9,22.3,22.4,20.9,20.2,20,20.2,20.8,21.2,21.1,21.2
1980,22.3,22.7,23.1,22,20.4,20.7,20,20.3,20.6,21.2,20.6,20.2
1981,21.7,22.7,21.9,22.3,21,20.7,20.2,20.5,21,21.5,20.9,20.9
1982,21.3,22.2,22.1,21.8,21.4,21,20.5,20.2,21.2,20.6,20.3,20.5
1983,21.3,22.5,22.9,23.3,22.1,21.3,20.7,20.2,20.7,20.9,20.6,20.6
1984,21.3,21.2,22.7,23.1,21.9,20.4,20.1,20.4,20.6,21.1,20.5,20.8
1985,21.5,22.2,22.5,21.1,20.3,20.1,19.7,19.9,20.7,21,20.6,20.7
1986,21.5,22.5,21.8,22.1,22.3,20.2,20.3,20.6,20.9,21.1,21.2,21.3
1987,21.7,22.5,22.6,22.5,21.3,20.5,21,20.7,21.7,21.7,20.8,21.4
1988,22.1,22.4,23.7,22.1,21.2,20.7,19.9,20.4,20.7,20.9,20.2,19.6
1989,21,21,21.7,21.4,20.5,20.6,20,20.4,20.2,20.8,20.7,20.6
1990,20.9,21.4,21.6,22.3,21.8,20.8,20.6,20.9,21.4,21.4,20.8,21.3
1991,21.5,22.7,22,22.7,20.8,20.8,20.2,19.9,21.6,20.7,19.9,20.2
1992,20.7,22.4,22.3,23.5,20.9,20.7,20,19.9,20.9,21.2,19.8,21.1
1993,20.8,21.6,21.5,22.3,20.9,20.6,20.6,20.8,21,21,21.8,19.6
1994,20.3,22.5,22.8,21.8,21.1,20.6,20.2,20.4,20.8,21,20.9,20.1
1995,21.4,22.7,22.7,23.3,22,21.7,20.5,21.2,21.4,21.5,21,21.5
1996,23,22.5,22.7,22.5,21.2,21,20.6,20.6,21.3,21.3,20.1,20.4
1997,22,21.7,23.8,22.2,21.3,20.9,21,21.3,22.6,22.2,20.2,22.1
1998,22.5,23.1,23.7,22.8,20.8,20.8,21,20.8,21.8,22.2,20.4,19.9
1999,21.1,21.9,22.7,22.8,21.2,20.9,20.6,19.6,20.2,21.4,20,20.5
2000,20.9,21.8,23.2,23.2,22.1,21.1,20.9,21.3,21.7,21.2,23.4,20.9
2001,22.4,23.5,23.1,23.3,22,21.2,21,21.3,22.2,22.6,21.5,21.5
2002,22.2,24.3,23.4,23,22.3,21.5,21.7,21.7,22.5,21.7,21.3,22.5
2003,21.9,22.9,23.5,23,22.4,21.6,21.1,21.1,21.9,21.7,21.5,21.7
2004,23.3,23.2,23,22.8,22.1,21.2,21.2,21.4,21.6,21.3,21.1,21.3
2005,20.7,23.1,23.6,23.7,21.5,21.4,20.8,21.3,22,21.3,20.4,20.5
2006,22,23.7,23.7,23.1,21.3,21.1,21.7,21.1,21.3,22.6,21.8,22.1
2007,22.8,23.1,22.8,23.2,22.5,21,20.1,20.9,21.2,21.6,21.2,20.9
2008,22.7,24,22.5,22.9,21.8,21.2,20.7,21,21.8,21.1,20.5,20.2
2009,21.9,23,23.2,23.1,22.1,21.8,21.8,21.2,22,21.7,21.7,22.7
