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