1901,21,21.7,23.1,23.5,25.8,27.4,26.2,27.5,27.1,26.5,22.7,21.8
1902,19.8,21,23.4,24.5,26.8,27.1,27.1,27.8,27.6,26.6,24.9,23
1903,22.2,23.5,24,24.2,25.4,27.3,27.3,27.6,27,25.5,23.4,21.2
1904,21.3,22.1,22.9,24.6,26,27.1,26.5,26.9,26.9,25.7,23.5,22.7
1905,18.8,22.3,23.5,24.2,27.5,28.1,27,27.7,27.6,26.9,24.7,23
1906,21.5,21.5,23,23.8,26.1,27,27.2,26.9,26.9,25.9,24.1,21.5
1907,21.6,21.1,23.1,24,27,27,27.2,27.2,27.2,25.7,24.6,22.9
1908,20.9,20.6,23.6,25.9,26.9,26.7,27,26.8,26.9,25.3,23.7,22.7
1909,21.3,21.8,23.9,24.5,26.8,27.2,27,26.9,26.4,25.5,23.5,21.7
1910,20.2,20.8,21.7,23.3,25.9,26.6,26.9,27.1,26.5,25.3,22.4,20.8
1911,21.4,21.3,23.1,24.7,25.6,26.9,26.5,27.5,27.6,27,25.6,23.5
1912,22.3,21,24.7,26.4,27.6,27.2,26.8,27.6,27.5,26.4,24.1,23.9
1913,23,23.3,25,23.9,25.5,26.2,26.9,27,26.6,25.7,23.6,22.8
1914,21.4,22.1,21.8,24.9,26.2,27.6,27.2,28,27.1,26,24,23.7
1915,22,21.3,21.1,23,27.6,28.1,27.6,28.3,27.6,27,24.6,22.6
1916,22.9,21.7,22.7,23.9,26.9,27.8,26.6,27.7,27.2,26.4,24.1,22.7
1917,22.3,21.2,24.1,24.2,26.4,27.2,27.1,27.6,27.3,26.3,22.7,21
1918,20.6,22.8,24,25.2,26.1,27.6,27.2,27.8,27.5,26.9,24.6,23.3
1919,21.1,22.1,24.1,24.3,26.7,27.1,26.8,27.9,27.1,27.1,24.8,23.3
1920,22.1,21.3,23,25.9,26.9,27.4,27.3,27.5,27.1,25.5,24.5,23.2
1921,21.7,22.7,24.3,25.3,25.4,27.5,26.5,27.6,27.8,26.3,25.3,23.6
1922,22.1,22.5,24.6,25.5,26.3,27.4,26.5,27.6,26.9,26.4,24.9,23.8
1923,22.1,23,24.8,25.7,26.5,27.5,26.8,27.5,27.7,26,23.4,23.4
1924,22.7,21.2,23,25.8,27.1,27.1,27.6,27.9,27.2,26.3,24,23.9
1925,23.5,22.8,23.6,24.5,26.2,27.5,27.2,28.3,27.8,26.9,25.3,23.6
1926,22,21.7,23.4,26,26.2,27.2,27,27.3,27.4,26.1,24.1,23.2
1927,20.5,22.7,22.6,24.3,26.7,27.6,27.7,27.6,27.1,25.4,23.5,21.9
1928,20,22.1,23.1,24.3,25.2,27,27.2,27,27,25.5,23.5,21.6
1929,22.1,22.8,23.9,24.9,26.5,26.4,26.1,26.6,26.6,24.8,24.6,22.3
1930,22.2,21.8,22.9,24.1,26.3,26.3,26.9,27.6,27,25.7,23,21.4
1931,20.5,20.8,21.6,23.4,26,27,27.1,27.8,27.1,25.8,23.7,24
1932,22.7,23.5,23.1,23.8,25.5,26.9,27.6,27.2,27.5,26.2,23.2,22.9
1933,22,23.1,23.7,25.5,26.9,26.7,27.5,27,26.8,26.2,23.8,22.9
1934,22.1,21.6,22.7,24.6,26,26.8,27,27.2,27.1,26.1,23.9,22.7
1935,21.3,21.4,23.6,25.5,27.6,27.7,27,27.1,27.2,25.8,23.5,21.2
1936,22.2,22.2,22.6,24.6,25.9,26.6,27.1,26.9,27,27.1,24.3,23.1
1937,23.4,22.7,23.5,24.6,26.1,27.1,26.9,27.4,27.2,26,23.6,21.9
1938,21.4,22,23.9,24.5,26.3,26.9,26.9,26.9,26.9,25.7,24.4,22.2
1939,21.8,23.4,23.7,24.4,25.6,26.5,27.2,27.3,27.1,25.9,23.1,21.8
1940,19.7,20,22.4,23.7,25.5,27.1,27.8,27.6,26.5,25.2,23.8,23.2
1941,21.7,20.5,22,24.5,25.7,27.6,27.6,27.9,27.8,27,24.8,24.8
1942,21.7,21,23.6,23.9,26.5,27.5,27.8,27.6,27.3,25.6,24.8,23.8
1943,22.7,21.3,23.2,23.9,26.2,26.9,27.8,27.3,27.2,25.5,23.8,22.1
1944,20.8,22.9,24.7,25.3,25.8,27.4,27.8,28.2,27.5,25.3,23.2,21.7
1945,21.1,22.6,24.3,25.8,26.3,27.7,27.2,27.2,26.6,25.8,23.3,22.7
1946,22.3,23,24.1,24.7,26.8,27.1,27.3,27.7,27.2,25.8,25.2,23.3
1947,22.9,21,22.9,25.9,26.5,27.3,27,26.8,27,25.7,25.6,23.3
1948,22.1,23,25.2,25.2,25.9,27.2,27.3,27.3,27.1,25.7,25.2,23.7
1949,22.4,22.9,24.1,25,26,27.1,27.2,27,27.3,26.5,23.2,22.9
1950,22.4,21.9,23.8,23.1,26.1,27,27.4,26.7,26.5,25.8,22.7,21.2
1951,20,20,22.6,24.1,25.8,27.1,27.6,27.5,27.3,25.7,23.7,23
1952,21.3,21.3,24.3,23.7,26.2,27,27,27,26.9,25.4,23.8,21.4
1953,20.9,22.2,23.9,25.5,26.3,26.6,27.2,27.2,26.7,24.9,23.7,22.7
1954,21.8,21.4,22.5,24.6,25.6,26.5,27.4,27.1,26.3,25.2,23,21.1
1955,20.8,21.3,23.4,24.6,26.3,26.7,26.7,27.5,26.9,25.2,23.9,22.7
1956,20.6,22.4,22.7,24.3,26.2,26.7,27.8,27.4,26.4,25.4,23,22.6
1957,21.8,22.4,23.2,24.5,25.7,26.7,28.3,27.1,26.8,25,24.5,21.5
1958,20,19.3,23.1,24.7,25.9,27.1,27.7,27.8,27.1,25.6,25.5,22.9
1959,21.6,23.9,23.8,24.5,25.7,27.2,27,26.9,26.7,26.3,24.3,22
1960,21.3,21.9,22.3,24.1,25.5,26.6,27.6,26.9,26.7,26.5,24.4,21.4
1961,21.4,23,24.5,25.2,26.2,27.2,27.6,27.7,26.7,26,24.7,23.4
1962,22.4,23.2,23.9,24.8,25.9,26.9,28.3,27.8,27.2,26.3,23.3,21.7
1963,22,21.7,24.2,24.6,26.1,27.5,27.6,27.9,28,25.5,24.3,21.5
1964,21.9,21.7,25,25.8,26.4,27.3,27.5,27.7,27.4,25.4,24.4,23.7
1965,21.6,23.4,24.2,25,25.6,26.8,28,27.7,27.1,26.1,24.1,22.8
1966,21.2,21.8,22.6,24.2,26,26.5,27,27.6,27.7,26.2,23,21.7
1967,22,21.8,23.3,24.2,26.5,26.7,28.4,27.5,27.2,25.8,24,23.3
1968,21.6,20.8,22,24.3,26.1,27.1,27.1,27.6,27,25.9,23.8,22.1
1969,21.5,21,22.6,25.3,27.1,27.9,27.7,27.5,27,26.4,23.7,21.9
1970,20.8,20.2,23.2,25.5,25.9,27.3,27,27.5,27.1,26.8,23.3,23.2
1971,21.5,22.1,22.5,23.6,26.4,26.8,27,26.8,26.9,25.8,24,23.4
1972,22.8,21.9,23.4,24.5,26,26.3,27,27.3,26.6,25.3,25.1,23.4
1973,22.5,20.6,24.2,24.6,25.7,27.1,27,26.9,26.6,26,25.1,21.7
1974,24.3,21.7,23.5,24.2,26,26.6,26.8,27,26.8,24.8,23.5,22.3
1975,22.3,23.5,23.8,25.4,27.4,27.2,27,27.5,26.6,25.9,23.7,22
1976,20.1,22.2,24.3,23.6,25.8,26.1,27.5,27.1,27.2,25.1,23.1,22.2
1977,18.8,21.1,24.5,24.1,25.3,27.6,28,27.4,27.6,25.4,24.3,22.2
1978,20.7,18.8,21.9,24.5,26.4,27.5,27.7,27.8,27.4,26.1,25.2,24.6
1979,21.6,21.3,22.5,24.5,26.3,27.5,28,27.8,27.2,26.4,24.8,23.1
1980,21.7,20.4,23.9,25.6,26.3,27.4,27.7,27.8,27.2,26.7,24.6,21.4
1981,18.3,21.5,22.3,24.6,27.1,27.5,28.1,27.5,27.4,26.5,23.7,22.5
1982,21.9,23.3,24.6,25.6,25.7,26.9,27.9,27.7,27.3,25.8,24.2,23.1
1983,21.6,21.4,22.7,23.7,26.1,27.1,27.2,27.5,26.8,26.1,24.7,23.5
1984,21.8,22.1,23.2,25,26.2,26.6,26.8,27.4,26.2,25.2,23.9,22.9
1985,20.5,21.9,23.4,23.9,26.4,27.7,27.2,27.3,26.9,26.4,25.1,22.5
1986,21.2,22.1,22.8,23.6,25.9,27,27.9,27,27.3,26.1,25.6,24.1
1987,21.5,22.5,23.3,23.1,26.6,27.8,27.9,28.2,27.8,25.8,24.8,23.1
1988,21.6,21.2,23.1,25,25.6,27,27.5,27.1,25.9,26.1,25,22.8
1989,22.5,22.3,23.4,24.8,26.9,27.4,27.3,27.5,27.4,26,25,22.1
1990,22.9,23.1,23.7,24.6,26.4,27.1,27.6,28,27.3,26.2,24.3,23.2
1991,24.2,22.2,24.5,25.8,26.4,27.6,28.1,28,27.6,26,24,23.3
1992,21.6,22.8,23.3,23.9,25.4,27.6,27.9,27.2,26.8,26,25.4,22.9
1993,22.6,22.2,23,23.8,25.7,27.7,28.3,28,27.4,26.7,25.2,22.8
1994,22.2,23.1,24.5,25.6,27.4,28.2,27.7,27.8,26.8,26.7,25.5,23.7
1995,21.8,21.8,23.5,25.6,27.9,27.6,28,28,27.8,26.8,24.5,22.1
1996,21.4,21.3,22,24.2,26.1,26.8,27.7,27.2,27.4,25.8,24.3,23
1997,22.3,24.1,24.9,25.2,27,27.3,27.5,27.9,26.8,25.7,25,23
1998,22.7,22.4,22.7,24.8,26.5,28.4,28.3,28.1,27.8,26.7,25.3,24.2
1999,22.7,22.2,22.9,25.4,26.6,27.1,27.5,27.5,27,26.1,24.1,22.9
2000,21.9,22.1,24.3,24.5,26.7,27.4,28.1,27.2,27.6,25.7,24.3,22.3
2001,19.9,23.9,23.9,25.1,25.7,27.7,27.5,27.8,26.8,26.1,24.2,24
2002,22.6,22.3,24.6,25.7,26.8,27.1,27.7,27.8,27.7,27.2,24.5,23
2003,19.6,23,25.7,24.4,27.3,27.4,28,28.3,28.2,27.5,25.8,21.7
2004,21.6,22.5,23.7,24,26,27.8,27.9,27.9,27.3,26.6,25.3,22.7
2005,21.6,21.4,23.5,24.1,26.2,27.1,28,28.3,27.6,26.5,24.8,22.7
2006,21.9,20.9,23.6,24.9,26.2,27,27.8,28.1,27.6,26.7,23.6,24.2
2007,23.8,22.4,24,24.9,26.2,27.4,28.8,28.6,27.9,27.5,25.4,24.2
2008,22.1,23.5,24.1,24.6,26.9,27.7,27.7,27.8,27,25.7,23.1,22.7
2009,21.3,21.1,23,24.6,26.7,27.4,27.7,28.2,27.9,27.2,24.6,24
