1901,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1902,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1903,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1904,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1905,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1906,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1907,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1908,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1909,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1910,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1911,31.2,31.5,31.3,29.4,28.1,27.5,27,27.4,28.6,29.8,30.6,30.7
1912,31.1,31.6,31.3,29.4,28,27.3,26.9,27.3,28.5,29.9,30.7,30.7
1913,31,31.5,31.2,29.4,28.1,27.3,27.2,27.5,28.7,30,30.7,30.9
1914,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,31
1915,31.2,31.7,31.4,29.6,28.2,27.4,27.1,27.4,28.7,30,30.7,30.8
1916,31.1,31.8,31.3,29.4,28.2,27.5,27.1,27.5,28.7,30,30.8,30.9
1917,31.2,31.8,31.4,29.4,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1918,31.1,31.8,31.4,29.4,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1919,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1920,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1921,31.2,31.7,31.4,29.5,28.2,27.5,27.2,27.5,28.8,30.1,30.9,31.1
1922,31.4,31.9,31.6,29.6,28.3,27.7,27.2,27.5,28.8,30.1,30.9,31.1
1923,31.2,32,31.4,29.7,28.2,27.7,27.2,27.8,29,30.3,31,31.2
1924,31.3,32.1,31.6,29.6,28.4,27.4,27.6,27.5,28.9,30.2,30.9,31.1
1925,31.3,31.7,31.4,29.5,28.3,27.7,27.5,27.8,28.8,30,30.7,30.9
1926,31.5,31.8,31.3,29.2,28.3,27.7,27.2,27.8,28.7,30.1,30.8,30.9
1927,31.4,32.1,31.6,29.4,28.3,27.4,27.5,27.8,29.2,30.2,31.4,31.3
1928,31.6,31.9,31.8,29.8,28.4,27.5,27.3,27.5,28.9,30.2,31.1,31.1
1929,31.5,32.2,31.8,29.7,28.6,27.6,27.1,27.6,28.8,30,30.7,31.4
1930,31.3,31.8,31.3,29.4,28,27.4,27,27.4,28.7,30.1,31,30.9
1931,31.2,31.7,31.4,29.5,28.4,27.6,27.3,27.6,28.8,30.1,30.7,31
1932,31.2,31.9,31.4,29.5,28.2,27.5,27.2,27.5,28.7,30,30.7,30.9
1933,31,31.4,31.2,29.5,28,27.2,26.8,27.3,28.5,29.9,30.9,30.9
1934,30.4,30.5,30.6,29.6,28.7,27.5,26.8,27.5,28.4,29.7,30.6,30.8
1935,31.7,31.1,31.4,28.6,27.7,26.7,26.4,26.5,28.8,30.7,31,30.6
1936,30.6,31.4,31,28.9,28.4,27.2,26.4,26.7,28,30.5,31.6,30.7
1937,31,31.7,31.5,29.4,28.9,27.9,26.7,27,29.1,30.2,31.3,30.8
1938,31.3,31.4,30.9,29.6,27.9,27.9,27,27.5,28.9,30.3,30.9,30.7
1939,30.8,31.7,31,29.2,28.5,26.7,27.2,27.8,28.8,30.3,30.9,31
1940,31.3,32.1,31.2,28.6,28.5,27.7,26.8,27.5,29.3,29.8,31.7,31.9
1941,30.9,32.5,31.8,30.1,28.5,26.8,26.9,27.3,29.5,30.5,30.8,31.1
1942,32,32.9,32,30.1,28.3,27.7,26.9,27.4,28.8,29.9,30.9,31.6
1943,31.8,31.6,31.9,30.5,28.7,27.5,26.7,27.6,28.4,29.9,31.3,31.7
1944,30.7,32,31.7,29.8,28.7,27.6,27.1,27.2,28.9,30.1,31.6,31.8
1945,31.7,31.9,32.2,30.7,29,26.9,26.7,27.3,28,30.9,31.1,31.9
1946,31.6,32.2,32,30.1,28.9,27.9,26.6,27,28.2,30.1,31.5,32.1
1947,32.2,32.2,32,29.9,27.7,27.4,27,26.8,28.6,29.8,30.8,30.9
1948,30.9,31.3,31.5,29.8,29,27.4,26.8,27.5,28.5,30.1,30.7,30.8
1949,31.2,31,31.2,29.8,28.7,27.1,27.2,28.3,29,30.5,31.5,31.2
1950,30.4,30.8,30.9,29.6,27.4,26.6,26.9,27.2,28.5,29.2,30.3,30.8
1951,31.5,32.5,31.5,29.3,28.1,27.9,27.2,27.5,29.6,30.7,31.2,31.6
1952,32.1,32.7,32.4,30.1,28.8,27.9,27.5,27.7,29.3,30.1,31.2,31.5
1953,32.3,32.2,31.7,29.9,28.5,28,27.4,27.7,28.8,30.3,31,31.5
1954,31.5,32.6,32,29.7,28.5,27.6,27.5,27.9,29.4,29.8,30.8,31.5
1955,31.8,31.9,31.5,29.3,27.9,27.5,27.4,27.4,28.8,29.8,30.8,31.4
1956,30.4,31.6,31.6,29.3,28.2,27.3,26.4,27.6,28.1,29.7,30.8,31.1
1957,30.4,30.6,31.1,29.1,27.3,27.4,26.8,27.5,28.8,30.2,30.7,31.3
1958,31.7,31,31.3,30.5,28.6,27.6,27,27.7,29.2,30.5,31.2,30.7
1959,31.7,32,31.2,30,29.2,28,26.6,27,28.6,29.6,31,30.8
1960,30.9,32,30.6,28.8,28.2,27.6,26.8,27.7,28.4,29.9,30.6,31.7
1961,33.3,33.5,33.2,30.2,29.2,28.4,27,27.3,28,29.2,29.3,30.9
1962,30.9,31.6,31.4,29.4,28,28,27.3,27.4,28,29.4,30.4,30.8
1963,30.7,30.9,30.7,29.3,27.6,26.9,27,26.9,27.7,29.6,29.8,30.3
1964,30.9,32.1,30.4,29.2,28,27.1,26.5,27,27.8,29,30.4,30.5
1965,30,31.4,31.7,29.2,28,26.9,26.9,27.1,28.7,29.6,30.2,30.6
1966,31,32.1,30.8,29.1,28,27.5,27.6,27.7,28.9,30,30.8,31.8
1967,32.2,31.7,32,29.2,27.8,27,27.2,27.2,28.5,29.3,30.3,30.6
1968,30.2,30.9,30.2,28.7,27.6,26.6,26.6,27.1,28.6,29.9,29.5,30.9
1969,31,30.8,31,30.1,28.3,27.5,27.9,27,28.9,30.2,31.1,31.5
1970,31.3,31.7,31.6,29,28.2,28,27.7,27.9,28.7,30.3,31.6,30.9
1971,31.1,30.8,30.8,28.8,27.6,26.9,26.3,26.6,28.1,29.5,31.6,31.1
1972,30.7,30.4,31.2,29.5,28,27.2,27,28.3,28.8,29,31.1,32
1973,31.5,32.1,32.7,30.2,28.6,27.9,27.6,27,29.2,31.3,31.3,30.8
1974,31.8,32.2,31.8,29.8,28.7,27.6,27.3,28.3,29.3,31,31.2,31.5
1975,31.8,32.6,32.4,29.4,28.9,28.1,28.2,27.8,28.7,29.8,31.8,32.3
1976,31.9,32.8,31.7,29.9,28.6,27.8,27.9,28.1,29.4,30.4,32.4,33
1977,32,32.5,30.6,29.4,28.4,26.9,27.5,28,28.5,30.3,29.8,30.6
1978,30,31,30.6,28.9,27.9,27.2,26.6,27.9,29.4,30.1,30.1,29.7
1979,30.2,30.4,29.8,29.2,27.9,27.3,26.9,28.1,28.8,28.9,31,31.8
1980,31.5,31.4,32,30.4,28.7,27.7,26.7,27.1,29.2,30.8,30.7,30.7
1981,32.1,32.2,31.7,29.2,27.6,27.3,26.1,27.6,29,29.9,31.2,30.1
1982,31.5,32.1,31.5,29.4,27.5,27.7,27.3,27.5,28.4,29.4,30.4,31.2
1983,32.1,32.5,32.1,30.3,28.3,28.5,27.5,27.5,28.9,31,31.8,30.6
1984,30.7,31.4,31.4,28.2,28.3,26.8,25.8,26.5,28.9,29.1,29.6,30.4
1985,31.3,31.1,30.5,29,28.2,27.3,26.8,27.1,28.7,29.8,30.5,30.8
1986,31,32.4,31.2,29.1,27.8,27.2,27,27.8,28.9,30.8,30.5,30.8
1987,32,32.1,32.5,30.6,28.7,27.7,26.8,27.7,29.6,30.5,31.4,31.7
1988,32.4,32.8,32.6,30.2,29,28.3,28,28.5,29.2,31,31.1,30.6
1989,30.1,31.6,31.1,28.8,27.4,26.7,26.9,26.5,28.2,28.9,29.3,30.2
1990,30.4,31.6,30.3,29,28.6,27.6,27.6,27.3,28.4,30.2,30.5,31.1
1991,31.8,31.4,31.4,31.1,28.1,28.1,26.7,26.9,28.8,30.7,30.9,30.4
1992,31.4,31.9,31.7,29.2,28,26.9,26.1,26.1,27.8,29.9,30.4,30.9
1993,30.5,30.4,30.9,29.3,28.6,27.8,27.1,27.4,28.8,29.9,31.1,31.5
1994,31.2,31.4,31,29.5,27.7,27.7,27,27.4,29.1,30.3,30.2,30.6
1995,31.1,31.5,31.1,29.8,27.8,27.8,27.7,27.3,29,30,30.9,31.8
1996,32,32.5,31,29.2,27.9,28,27.5,27.9,29,29.3,30.5,30.8
1997,32,31.8,30.3,29.5,28.1,27.2,27.4,28.1,29.7,29.6,30.7,31.4
1998,31.5,32.3,32,29.6,28.6,28.4,27.8,28.2,28.4,30.1,31.1,31.9
1999,32.4,32,30.9,29.6,28.2,28,26.9,27.6,29.3,30.2,30.9,31.3
2000,31.5,31.9,31.6,30.4,29.5,27.3,27.6,27.7,29.2,30.7,31.5,30.5
2001,30.9,31.7,32.4,29.4,28.6,28,27.5,28,28.9,30.7,31.4,31.5
2002,32,32,32,29.8,28.8,27.9,27.8,27.5,29,30.9,30.9,32.2
2003,31.9,32.2,32.6,30.4,28.9,28.4,27,28.1,28.5,31.2,31.2,31.1
2004,33.3,33.4,32.3,29.7,29.1,27.6,27.9,28.4,29.2,29.6,30.7,30.7
2005,31.5,32.8,32.1,29.7,28.7,28.3,27.3,27.5,29.1,30.1,31.2,31.9
2006,32.7,32.6,32.2,28.9,28.4,26.3,27.3,27.6,28.3,30.3,30.9,30.6
2007,31.2,32,31.2,29.5,28.4,26.7,26.7,27.7,29.8,30.2,30.9,30.7
2008,31.9,32.1,31.3,29.5,28.5,27,27,27.9,29.2,30.6,30.9,30.8
2009,32.1,32.3,31.6,30.3,28.6,28.1,27.4,28.1,29.7,30.8,30.9,32.7
