1901,28.9,27.8,27.9,26.8,24.6,22.8,22.2,22.2,23.9,26,28.8,27.3
1902,28.8,28,27.5,27.6,25.4,23.1,23.1,22.8,26.1,26.6,28.2,28
1903,28.3,27.7,28.2,27.4,25.9,23.9,22.2,23.4,23.8,26,27.4,27.6
1904,27.5,27.4,27.6,26.7,25.4,23,21.8,23.2,23.6,27.1,28.8,27.9
1905,28.4,27.6,27.3,26.2,25.6,24.5,22.2,23.5,24.1,27.5,27.3,27.7
1906,29.4,27.9,28.5,27.2,25.2,23.1,22.3,22.6,24.3,26,27.3,27.6
1907,28.2,27.8,27.4,26.8,25.1,23.1,21.2,22.9,24.8,27.6,27.7,27.2
1908,28.3,27.5,28.2,27,24.3,23.7,22.3,23.7,25.5,27.8,28.4,27.5
1909,27.9,27.7,27.8,26.9,24.6,22.2,23.1,23.2,25.3,25.8,27.9,27.4
1910,28.2,27.7,27.7,27.1,24.5,22.3,22,23.1,24.8,26.8,26.3,26.9
1911,27.8,27.1,27.3,25.7,24.3,22.4,22.4,22.8,24.6,27.1,27.6,28.9
1912,28.8,27.7,28.4,27.5,25.8,23.2,22.3,23.4,25.9,27,29.1,27.9
1913,27.7,27.6,28.4,26.3,25.9,22.9,22.2,23.9,25.1,27.7,27.8,27.4
1914,28,28.3,28.1,27.4,25.4,23.7,22.2,23.5,25.6,26.9,27.3,28.8
1915,28.6,28.1,28.1,27.9,25.3,23,23,22.6,24.5,27.7,28,27.7
1916,28.3,27.5,28.1,27.3,24.7,23,21.4,23.2,24.8,27,26.9,26.7
1917,27.6,26.7,27.4,26.7,25.8,23.5,22.9,22.9,24.1,25.1,27.3,26.6
1918,28,27.3,27.6,26.1,24.5,23.2,22,22.4,24.9,27.5,27.9,28
1919,28.4,27.9,28.1,26.4,23.7,22.9,21.6,23.9,25.8,26.6,28.3,28.3
1920,28.2,27.6,27.7,26.1,25.2,22.1,21.5,23.3,26.1,27.7,27.6,27.3
1921,27.8,27.8,27.5,26.1,24.7,23.1,22.2,23,24.9,27.3,27.5,27.1
1922,27.5,27.4,27.7,25.5,24.6,22.6,21.6,23.4,24.3,26.4,28,28.2
1923,28.7,28,28.4,27.5,25.5,23.1,23.1,22.7,25.6,27.2,28.8,27.9
1924,28.2,27.6,28.5,26.5,25.5,23.2,22.7,23.4,25,26.5,27.6,27.3
1925,27.8,27.8,27.7,27.4,24.6,24.3,23.2,22.9,26,27.1,27.8,28.1
1926,28.7,28.8,29,27.8,25.5,24.1,22.9,23.5,25.5,27.2,28.7,28.2
1927,28.2,28.1,27.6,27,25,23.1,22.1,23.3,24.9,26.9,27.9,28.5
1928,28.1,28.2,28.4,27.7,25.5,23.2,22.3,23.2,25.1,27.2,28.3,27.9
1929,28.6,27.1,28.6,27.3,25.1,23.8,23.2,23.2,25.3,28,28.7,27.7
1930,27.5,28,28,27,24.1,22.6,22.1,22.3,26,26.2,28.2,28.3
1931,27.8,28.1,27.8,26.8,25.3,22.8,22.6,23.3,24.4,26.3,27,27.6
1932,28.3,27.7,28,26.5,24,22.8,22.2,23.1,24.7,26.3,28.2,27.8
1933,28,27.4,27.5,26.7,24.8,22.8,22.4,23,23.8,26.7,28.4,27.6
1934,28,27.6,28.2,27.1,25.2,22,22.3,22.4,23.9,26.2,27.4,27.1
1935,27.8,27.3,27.9,26.2,25.3,22.8,21.2,22.7,25.4,26.9,27,27.3
1936,27.9,28.6,28.3,26.9,25.3,22.7,22.3,22.6,24.5,27.3,27.9,27.5
1937,27.9,28.2,27.7,26.9,24.7,23.6,22.1,22.8,25.6,26.3,28.8,27.9
1938,28.3,27.8,28.1,27.5,25.5,22.7,22.9,23.5,24.9,26.7,26.9,28.2
1939,28.3,28.4,27.8,26.9,25.5,23.1,22.5,22.7,24.9,26.9,27.8,27.4
1940,27.6,27.6,27.8,26.9,24.6,22.9,22,22.6,24.4,25.4,27.2,28
1941,27.2,27.8,27.9,27.6,25.2,23.7,22.4,23.3,25.1,26.8,27.9,28.4
1942,28.7,28.4,28.5,26.8,24.5,23.4,22.4,23.5,24.8,25.1,27.1,27.6
1943,27.5,27.2,27.4,27.2,24.6,22.6,22.3,23.4,23.2,26,27.6,27.5
1944,28.1,28,27.3,26.4,24.5,24.3,22.2,23.4,24.5,25.8,28.1,27.6
1945,28.4,27.7,28.1,27.2,24.6,22.2,22,22.7,24.1,27,27,27.5
1946,28.2,28.1,27.6,26.8,24.7,22.7,22.6,22.8,23.8,26.5,27,27.9
1947,28.5,28.3,27.2,27.3,24.8,23,23.2,22.7,24.4,26.3,27.8,28.3
1948,28.3,27.8,28.2,27.6,25.9,23.5,23,23,24.3,26.3,27.4,27.4
1949,28.8,27.7,27.7,26.5,25,22.9,22.6,23.6,24.8,26.6,27.8,28.2
1950,28.4,27.5,27.6,27.1,23.8,22.8,22.3,22.7,23.5,25.4,27,28
1951,27.4,27.3,26.9,26.3,24,22.7,21.2,23.1,24,26,27.1,27.8
1952,27.6,28.2,27.7,27,25.3,23.3,22.6,23.4,24.3,25.8,26.1,27.2
1953,27.5,27,27.2,26.8,24.4,22.8,21.4,22,23.3,25.4,27,27.7
1954,27.3,27.9,27.1,26.5,24.8,22,21.9,22.8,24.3,26,26.7,27.6
1955,27.6,28.4,27.7,26.5,24.3,22.6,22.8,21.9,24,25.3,26.6,27.7
1956,27.5,27.4,27.9,26.7,25.3,23.3,21.8,22.7,23.9,25.1,26.2,26.7
1957,28.1,27.4,27.3,26.9,24.9,22.3,22,22.9,24.7,26.4,27.5,27.9
1958,27.8,27.9,27.6,27.1,24.5,22.8,22.4,23.2,24.2,25.6,27.2,27.5
1959,27.3,28,28.1,25.9,25.1,22.8,22.7,23.1,24.2,25.1,26.7,27.9
1960,27.3,27.6,27,26.4,24.3,23.6,22.1,22.9,24.2,26,26.5,27
1961,27.9,28.5,28.1,27.7,25.5,23.8,23.8,23.4,24.4,25.9,27.1,27.5
1962,28.1,27.8,27.5,27,23.8,22.4,22,22.8,23.8,25.6,27.1,27.4
1963,27.3,27.6,27.5,26.4,23.4,22.1,21.9,21.1,23.5,25.3,26.2,27
1964,27.6,28.5,27.3,26.6,24.1,22.5,20.8,21.9,23.7,25.6,26.6,26.9
1965,26.7,27.7,26.9,26,23.9,21.1,21.6,22.8,23.8,24.8,26.8,27.4
1966,28,28,27.7,26.7,24.1,23.6,22.6,23,24.7,25.3,26.4,27.6
1967,27.8,28.2,27.9,27.2,25.2,23.6,23.2,23.2,24.3,26.1,26.6,26.9
1968,27.7,27.4,27.3,25.4,23.9,21.2,21.8,22.7,23.6,25.4,26.4,27.4
1969,28.1,28.1,28.7,27.6,25.2,22.5,22.8,23.3,23.2,26.5,27.6,28.2
1970,27.9,28.1,27.9,26,24.7,23.2,22.7,23.7,24.5,25.8,27.1,27.5
1971,26.9,27,27.1,27,24.2,22,22.6,22.5,23.9,25.5,26,26.9
1972,27.5,26.7,26.6,26.2,25.2,21.7,22.4,22.9,23.8,25.5,26.3,27.6
1973,27.6,27.5,27.8,26.5,24.2,22.7,21.9,22.4,23.8,26,26.9,26.5
1974,27.4,26.9,27,26.1,24.5,22.7,23,21.9,23.2,24.7,26.7,27
1975,27.2,26.7,27.2,26.5,24.5,22.9,21.8,22.1,23.5,24.8,26.2,27
1976,26.8,27.3,27.5,26.7,24.6,22.7,21.9,21.8,23.6,25.5,27.3,27.2
1977,27.7,27.1,27.2,26.4,24.4,22.5,22.2,22.5,24.2,26.2,27.1,28.1
1978,28.4,28.2,27.7,26.3,24.1,23,21.6,23,24.1,26.4,27,27.1
1979,27.6,27.6,28,26.3,24.6,22.3,21.9,22.7,24.4,26,26.6,27.1
1980,27.6,28.4,27.8,27,24.7,22.2,22,22.6,24.5,25.8,27.8,28.3
1981,28.4,27.7,27.6,26.4,24.5,22,21.3,22.2,24.1,24.8,26.8,27.4
1982,27.3,27.9,27.3,26.3,24.3,23.4,23,22.9,23.6,25.4,26.8,27.3
1983,27.7,28.3,28.4,27.4,25.8,24.6,23.1,22.7,24.1,25.6,27,28.1
1984,27.6,27.2,27.5,26.8,25.1,22.9,21.8,22.4,24,25.6,26.8,27.5
1985,28.1,28.1,27.3,26.2,24.5,22.7,22.4,23.4,24.8,25.7,26.8,27
1986,27.9,27.6,27.8,27.1,24.7,22.2,21.5,22.4,23.7,25.3,26.9,27.5
1987,27.1,28.1,27.9,27.1,24.8,22,22.1,22.8,24.8,25.5,27,28.5
1988,28.2,27.6,28.4,27.9,25.1,23.8,23,23,24.1,26.3,26.5,27.3
1989,27.4,26.8,27.5,26.7,24.8,22.9,22.7,23.3,24.1,25.8,27.1,27.3
1990,27.7,28,27.4,27.2,25.2,23.7,21.8,23.2,24.3,26.4,26.5,27.4
1991,28.9,28,28,27.1,25.4,22.7,22.2,22.6,24.1,25.7,27,27.2
1992,28,27.1,28.5,27.6,25.9,22.7,21.5,22.6,23.8,25.6,27.8,29
1993,27.9,27.7,27.1,26.9,25.1,23.8,21.9,22.7,23.9,25.6,26.8,27.6
1994,28,28.4,27.8,27.5,25.1,23.4,21.8,23.9,24.8,25.2,27.4,27.6
1995,27.8,28.3,28,27,25.3,23,22.6,23.7,24.6,26.3,27.1,27.7
1996,28,28.1,28.3,27,25.2,22.9,21.9,22.1,25.1,25.4,27.8,27.9
1997,28,27.7,28,26.8,24.3,23.4,22.6,23.4,25.2,26.1,28.1,28.4
1998,28.6,28.9,29.5,27.6,25.1,23.6,22.8,23.3,24.3,25.5,27.5,27.6
1999,27.8,28.2,28.2,26.7,24.5,23.1,22.1,23,24.5,25.6,27.3,27.6
2000,28,28.3,28.4,27.5,25.2,24.2,22.7,23.5,24.9,26.3,27.5,27.4
2001,28.1,28.6,28.9,27,25.6,22.8,22.4,22.8,24,26,27.4,27.8
2002,27.9,28,28.5,26.7,24.9,23.5,22.4,24.1,24.6,26.9,27.9,28.1
2003,28.1,28.1,28.8,27,25.9,23.8,22.3,22.7,24.3,26.6,28,28.5
2004,28.2,27.9,28.2,26.5,24.5,22.1,22.6,23.4,24.9,26.3,27.3,28.1
2005,28.1,28.6,28.4,26.8,25.8,23.8,22.3,23.5,24.8,26.3,27.7,27.5
2006,28,28.2,28,26.8,24.9,23.4,22.7,23.4,24.2,26.3,27.9,28.9
2007,28.5,27.9,28.5,27.3,25.6,23.5,22.6,23.2,24.8,26.2,27.8,28.4
2008,28.1,28.1,27.4,26,24.8,22.6,22.9,23.2,24.2,26.6,27.5,28.4
2009,28.8,28.8,28,26.8,25.1,23.6,22.8,23,24.7,26.3,27.5,28.2
