1901,31.9,30.5,28,28.6,25.1,23.1,22.7,24.6,25.4,25.5,27.6,29.7
1902,29.9,30.3,29.3,27.5,26.2,23.2,23.6,24.5,25.9,26,27.1,29.7
1903,31.3,29.8,28.7,27.2,26.5,23.5,23,25.4,25.4,26.9,27,29.5
1904,30.8,29.4,28.7,27.7,26.2,24.3,23.4,24.9,25.3,26.4,28,29.1
1905,30.6,29,27.8,27.6,25.9,23.6,23.6,24.1,25.8,26.8,26.9,29.5
1906,31.7,29.4,28.7,26.6,25.8,24.4,23.3,24.3,25.1,25.5,26.9,29.1
1907,30.3,29.8,29.6,26.5,25.4,23.3,22.8,24.9,25.6,25.5,26.7,28.7
1908,30,29.6,28.6,26.3,25.2,23.8,23.2,24.8,26,26,27.5,29.5
1909,30.4,28.9,28.4,27.4,25.5,25.1,23.9,25.2,25.1,26.1,26.7,29.3
1910,29.6,29.1,28.8,27.6,26.2,23.4,23.6,24.6,25.3,25.9,26.7,28.2
1911,30.2,29.9,29.2,26.7,24.1,22.6,23,24,25.4,27.3,27.5,30.7
1912,30.7,30.8,29.1,27.8,26.4,23.7,23.3,24.9,26.9,27.1,29.2,30.1
1913,31,30.7,29,27.5,26.7,24.9,25,25.5,25.9,27.1,28.3,30.5
1914,31.2,30,29.6,28.6,26,23.8,24.5,24.9,27.7,26.7,27.8,30.4
1915,31.6,30.8,29.2,27.9,25.1,24,22.7,25.3,25.5,27.2,28.1,29.2
1916,30.4,30.3,29.2,28.1,25.4,24.2,24.8,25.3,26.8,27.5,28.3,30
1917,30.7,29.1,29.7,27.7,25.9,24.2,23.1,23.3,24.2,26.2,26.5,29.2
1918,28.7,29.5,28.9,27.4,25.3,23.9,23.6,23.7,26.7,28.6,28.1,29.8
1919,31.2,29.8,29.9,28.4,24.7,24,23.8,24.4,25.5,27.2,26.4,29.7
1920,30.9,29.8,28.8,27.8,26.2,24.3,24,25.6,26.1,26.2,28.4,30
1921,30.5,30.3,30.5,27.2,24.6,25,22.7,24.7,26.4,26.6,27.2,29.5
1922,31.1,29.4,29.4,27.9,24.8,23.8,24.2,25.7,26.2,26.9,28.4,29.9
1923,30.2,29.9,29.6,28.2,26.2,24.3,24.6,25.3,27.1,28.5,29.3,29
1924,30.8,28.6,28.5,27.2,25.9,24.3,22.5,24.4,24.7,26.5,27.2,29.3
1925,30.3,30.6,28.6,27.9,25.2,25.2,23.5,25.7,25.3,27,28.5,30.8
1926,31.3,30.9,29.4,28,26.2,23.4,23.2,25.5,24.9,27.9,28.4,30.1
1927,31.2,30.8,29.7,28.6,26.4,23.8,23.8,25.5,27.1,27.4,28.6,29.8
1928,30.5,30.3,29.5,27.3,25,25,23.3,24.3,25.8,26.6,28.9,29.6
1929,29.9,29.2,27.9,27.7,26.5,23.6,23.8,23.9,25.7,27.3,27.8,29.6
1930,30.3,29.3,28.8,27,25,23,23.6,24.1,24.9,26.8,28,30.7
1931,30.7,31.2,29.2,27.8,26.9,24,22.6,25.8,26.5,27.7,28.2,30.6
1932,30.6,30.2,29.6,28.4,25.2,24.5,24.1,25.3,27.3,27.8,28.4,30.3
1933,30.9,31.1,30.5,28.3,27.1,24.8,24.8,25.4,26.2,28.2,28,30.1
1934,31,30.1,29.8,28.8,27.3,23.9,23.5,25.8,26.9,27.9,28.5,30
1935,30.3,29.4,28.7,27.6,25.5,23,24.2,23.5,26.2,28,26.9,29.2
1936,30.5,29.9,29.4,27.8,25.1,24.2,24.3,25.7,26.1,26,27.3,30.2
1937,31.6,31.2,30.8,28.4,27.6,25.1,23.8,25.2,25.9,27,28.9,29.2
1938,30.9,30.1,30.6,28.4,26.3,23.8,24.1,24.7,26.6,27.7,27.5,30.4
1939,31.1,30.9,29,27.4,26.7,23.9,22.6,24.9,24.7,27.5,27.8,29.9
1940,31.8,31.2,30.6,28.6,26.8,24.7,24.1,25.9,27,27.1,28.9,31.5
1941,31.6,31.6,30.5,29.4,28.1,25.5,24.6,26.1,27,28.6,29.5,31.6
1942,32,31.5,30.5,28.1,26.3,24.9,24.4,25.9,25.9,27.1,28.4,29.7
1943,31.6,30.6,29.3,27.7,25.2,24.2,23.6,23.8,25.7,27.6,29.5,30.4
1944,33.2,29.5,29.8,28.7,26.1,23.6,24.8,27.1,26.6,28.5,29.6,30.8
1945,30.6,31.2,29.3,28.7,26.6,24.3,24.5,25,27.6,27.3,28.7,30.8
1946,30.5,30,30.6,29,26.6,24.3,24.5,25.6,28.6,28,29.2,30.6
1947,31.1,31.5,29.6,28.6,26.5,24.2,23.9,26.7,26.7,27.6,29.8,30.1
1948,30.3,30.3,29.2,28.1,27.1,25.7,24.8,26.5,27,28.6,28.2,31.6
1949,31.9,29.6,28.7,28.4,25.9,23.7,24.1,25.7,27.1,27.6,28.1,30.2
1950,30.6,30.2,31,28.7,26,24.9,24.5,24.4,27.2,27.8,28,29.5
1951,29.6,30.5,29.4,28,25.2,23.8,22.9,24.3,25.3,27.4,28.9,29.9
1952,31,29.9,30.3,28.4,26.1,24.4,23.9,26.4,26.7,28.2,27.6,29.5
1953,31.7,30.3,29.2,28.2,26.6,24.4,23.8,25.1,25.2,27.9,28.5,30.3
1954,30.4,30.6,29.3,27.8,26.6,23.1,24.3,25,26.6,27.3,27.9,30.3
1955,30.1,29.4,28.5,27.3,25.2,23.6,24.5,25.3,25.9,25.5,26.5,28.6
1956,30.4,29.9,29.7,27.7,25.7,24.3,23.9,25.9,25.2,26.8,28.3,29
1957,31.6,31.1,29.4,27.9,26.1,23.6,23.8,25.6,27,28.5,29.7,30.2
1958,31,30.8,30.3,28.7,27.3,23.2,23.8,25,26.2,27.4,29.4,30.4
1959,30.7,30.3,29.5,29,26.4,24.1,24.4,24.8,26.3,27,27.6,29.7
1960,31.4,31.1,30.8,27.3,26,24.4,23.9,26.7,26.9,29,29,31
1961,32.6,32,31.6,27.9,26.7,23.9,23.6,24.4,26.6,26.5,27.6,28.9
1962,30.3,31,30.1,27.7,25.5,26.3,25,26.4,28,28.3,28.1,30
1963,30,30.4,28.9,27.3,25.5,22.9,22.1,26,28.3,27.6,28.6,29.8
1964,30.7,30.9,30.9,27.2,25.9,24,22.8,24.9,26.3,26.8,27.7,29.2
1965,31.5,31.6,30.3,27.7,26.3,22.6,23.8,26.2,26.4,26.2,26.6,29.6
1966,31.9,29.7,30.7,26.9,25.9,25,24.8,25.6,27.2,27.9,28.9,30.8
1967,31.4,29.8,29.4,27.7,26,24.8,23,25.5,27,27.6,28.7,30.7
1968,32,29.7,28.4,26.8,26.3,22.9,24.6,24.9,25.9,27.2,27.3,31.7
1969,33.3,32.6,29.9,27,25.4,24.2,24.4,26.6,26.5,27.5,28.6,30.1
1970,32.6,31.2,30.8,28.6,26.6,24.1,24.4,26.6,28.3,26.8,29.2,32
1971,30.5,30.2,30.4,27.9,24.8,23.9,24.7,26,26,26.6,27.1,29.2
1972,31.3,28.5,28.7,28,24.4,22.5,23.9,24.3,27.3,28,28.5,30.4
1973,31,30.6,31.5,27.3,26.3,25,24.5,25,26,27.1,27.8,28.6
1974,31.4,31.2,30.2,27.3,25.5,24.1,24.3,26.1,26.8,28.5,28.5,30
1975,30.2,28.8,28.1,27.2,26.2,23.9,24.4,25.8,26.3,26.1,27.1,28.3
1976,29.3,30,29.8,27.5,24.9,24.8,24.5,24.5,27,27.1,29.1,31.3
1977,31.3,30.3,28.3,29.8,26.8,25.2,24.8,25.4,27.3,28.3,29,31.7
1978,29.9,30.7,31.2,27.4,26.4,23.7,23.4,25.8,26.6,25.9,28,29.9
1979,30.7,32.5,30.1,29.6,26,24.9,22.9,24.9,25,27.9,28.5,29.7
1980,31.2,31.1,30.8,29.2,26.6,24.8,24.5,25.9,24.5,27.1,28.7,31.7
1981,32.3,29.9,29.5,28.7,24.7,22.7,23.1,23.6,24.4,25.5,28.5,29.5
1982,31.7,31.9,30.8,26.8,26.3,24.2,25.2,26.4,26.8,27.2,27.7,31.6
1983,33.2,31.6,31.4,29.9,27.7,25.3,24.7,25.1,28.1,27,27.6,30.4
1984,30.5,29.1,28.7,27.7,27.2,23.3,23.2,24.4,26.1,27,27.4,30.7
1985,32.1,30.8,30.3,28.7,25.4,24.2,24.1,27,27.3,29.3,29.9,30.5
1986,31.6,31,30.9,28.9,27.4,24.7,25,27.3,27.3,28,28.2,31.6
1987,30.9,32.4,30.6,29.1,28.8,24.1,23.8,25.1,25.6,26,27.3,30.7
1988,31.8,31.8,30.6,28.2,27.3,23.9,24.8,27.1,26.9,26.6,28.2,28.8
1989,30.5,29.3,30.7,28.6,26.7,23.4,24.1,27.5,27.1,27.4,27.9,29.6
1990,30.7,29,29.7,27.6,25.9,24.7,24.3,24.7,25.7,26.7,28.1,28.5
1991,30.4,30,29.4,29.6,26.6,23.6,24.5,25.7,27,27.5,29.6,30.4
1992,31.4,32.6,31.4,30.3,28.2,24.5,24.6,25.7,27.3,29.3,29.2,30.6
1993,32,30.4,29.8,29.1,26.9,25.4,24.9,25.6,27.7,26.9,28.3,30.4
1994,30.8,31.2,30.5,28.2,26.2,24.8,24.2,25.6,27,26.3,29,30.6
1995,31.5,32.1,29.9,27,25.6,23.5,23.6,25.7,27.2,27.6,28.1,28.9
1996,30.7,30.7,29.3,27,26,24.9,22.6,24.3,27.2,27.2,28.9,31.3
1997,31,30.4,29.5,26.9,24.6,24.9,22.7,25.6,25.6,26.8,26.6,29.2
1998,30.5,30.7,30.5,29,27.1,24.9,24.3,25.8,27,26.6,29,30.1
1999,31.5,30.5,31,29,26.6,25.1,24.9,26.4,25.8,26.8,29.2,30.4
2000,29.5,29.7,29.6,26.7,25.1,24.4,24.3,27.1,26.6,25.9,27.8,30.3
2001,31.1,30.5,31,27.8,26.7,25.3,23.8,26.5,26.3,27.8,28.2,30.2
2002,31.8,30.1,31.4,29.7,27.7,24.5,24.9,26.4,26.8,28.1,28.6,30.7
2003,31.6,32.3,31.8,30,27.2,24.1,24.2,25.9,26.6,27.9,29,31.1
2004,30.6,31.1,30.1,28.7,26.6,24.3,23.6,27.2,26.3,28.2,30.6,32.2
2005,31.4,32,29.9,28,27.4,25.7,25.1,26.6,28.1,28.6,29.2,29.6
2006,31.1,30.7,28.9,28.2,25.4,24.7,25.6,25.5,26.8,28.6,29.2,31.3
2007,32.2,32.8,30.8,28.9,27.2,25.1,24.5,26.7,28,27,28.4,29.1
2008,30.7,31.8,30.2,28,26.8,24.2,25.1,26.1,27,27.4,28.4,30.5
2009,31.4,30.2,30,28.9,27,25.8,24.2,26,27.3,27.6,27.5,31.6
