1901,31.3,31,31.5,30.2,28.9,26.1,26.2,28.1,30.7,32.6,33.8,32
1902,31.3,31,31,31.2,28.7,27.2,27.7,29.2,32,32.7,34,33
1903,31.5,31.7,31.5,31.4,30,27.2,26.4,28.9,33.5,34.5,33.2,31.7
1904,30.6,30.3,30,30.6,28.1,27.3,26,28.1,29.8,33.5,34.1,31.2
1905,31.5,31,30.4,29.8,28.9,28.7,26.1,29.3,32.4,35.2,33.9,32.8
1906,32.5,30.6,31.1,29.8,29.2,26.7,26.6,28,31.2,33,32.6,32.2
1907,31.6,30.6,30.9,30.3,28.9,26.5,25.4,27.1,30.9,34,33.3,32.4
1908,31.3,30.9,31.3,31,27.7,26.9,26.5,29.1,31.8,34.9,34.5,32.5
1909,31.3,31.5,31.4,30.4,28.8,26.3,26.9,28.9,31.3,33.7,33.7,32.8
1910,31.6,31.1,30.9,29.9,28.3,26.4,26.3,28.4,30.9,33,32.9,32.1
1911,30.8,30.4,30.4,29.6,28.6,25.7,25.6,27.9,30.3,34.3,34.1,34
1912,32.6,32,30.8,31.3,30.6,26.5,26,27.8,31.9,33.4,35.8,31.8
1913,31.4,31.2,31,30.4,29.2,26,27,28.9,31.9,34.9,34.9,32.9
1914,32.3,31.2,32.5,30.9,29.8,27.6,26.4,29.1,32.8,35.3,35,33.2
1915,32,31.1,31.2,31.4,28.5,26.7,27.5,28.3,32.3,35.8,35,33.3
1916,32.1,31.7,32.2,31.3,29.2,27.3,26.8,28.4,32.3,35.3,33.4,32.5
1917,32.5,32.4,31.8,30.8,30.1,27.9,27.8,28.6,31.1,34.4,34.5,31.2
1918,30.4,30.9,31,29.6,28.3,26.1,26.3,26.5,31.6,35.7,34.6,33.1
1919,32.2,31.3,31.8,31.6,27.9,26.5,26.4,28,31.4,33.1,33.6,32.9
1920,32.4,31.9,31,29.9,29.8,27.3,26.4,28.6,32.8,35.4,34.7,33.3
1921,32.1,32,31.9,30.4,28.6,27.5,26.3,27.7,31.3,34.8,33.8,32.4
1922,32.5,31.4,31.7,31.1,29.4,27.5,26.4,30.7,32.5,34.1,35,33.2
1923,32.2,31.3,31.5,31.1,29.1,27.1,27,28.1,32.5,34.4,36.7,32.9
1924,31.1,31.3,32.8,30.6,29.9,27.6,26.3,27.9,31.3,33.5,33.9,31.7
1925,31,31.1,31.5,31.5,29.5,28.7,27.3,29,30.8,33.5,34.6,33.3
1926,31.6,33.2,32.1,30.4,29.3,26.9,26.3,28.1,31.7,34.7,35,32.3
1927,31.9,31.3,30.9,30.3,28.7,26.2,26.8,28.5,31.4,34.3,33.7,33.3
1928,32.8,31.7,31.7,30.2,28.1,27.8,26.6,28.2,32.7,35,35.4,33.1
1929,31.4,31.4,30.9,30.2,29.6,27.5,27.7,27.7,32.8,35.7,35.7,32.2
1930,31.2,31.9,31.3,30.6,27.9,26,26.4,28.5,32.6,33.7,35.3,33.6
1931,31.5,32.3,31.9,31.1,30.3,26.4,27.6,30.3,32.9,35.5,33.8,33
1932,32.1,31.6,31.4,30.4,27.6,26,26.1,27.5,32.4,34.4,34.5,32.8
1933,31.2,31.3,31.5,30.3,28.8,27.1,27.2,28.3,30.5,34.5,34.2,31.4
1934,31.9,30.7,30.7,30.3,29.3,26.1,26.9,28.4,30.4,34.1,33.1,31.4
1935,31.4,30,30.8,29.2,28.8,25.8,26.2,26.3,32.2,34.7,33.1,32.2
1936,31.6,31.4,31.1,29.1,28.8,26.6,26.7,27.5,30,34,34.2,32.2
1937,31.4,31.7,31.4,30.3,29,27.5,26.4,27.4,31.8,34.1,34.9,32.3
1938,31.3,31.3,30.7,31.4,29.5,26.6,27.4,28.8,31.7,34.8,33.9,32.3
1939,31.1,32.4,29.3,29.5,28.3,24.4,25.9,27.8,29.7,33.6,33,31.8
1940,31.3,30.8,31.3,30.4,28.3,26.3,25.7,27.7,31.9,32.1,33.9,34.3
1941,31.1,32.1,31.4,32.5,30.6,27.8,27.2,28.3,32,35.2,34.6,33.1
1942,32.6,31.9,32.5,30.8,29.2,28.7,26.2,28.8,32,32.4,33.8,33.2
1943,31.1,30.5,31.1,30.9,28.2,26.1,28,29.5,30.5,35.4,34.8,32.3
1944,33,31.6,30.4,30.3,28.2,27,27.6,28.2,31.4,34.5,34,32.5
1945,30.5,31,31.4,30.3,28.5,25.6,26.6,27.4,30.4,35.6,33.6,33.4
1946,32.4,31.5,30.2,29.8,27.9,25.1,25.9,27.4,31.5,35.6,33,32.6
1947,32.2,32,30.5,31,27.9,26.5,27.4,28.5,31,34.2,35.5,32.3
1948,32,31.3,31.9,30.5,28.5,26.2,27,27.3,30.6,34.7,33.9,34.4
1949,33.9,32.3,32,30.6,28.9,25.9,26.9,29.8,32.4,34.9,35.8,33
1950,30.8,31,31.3,31.1,26.7,25.7,27.1,26.9,30.9,32.6,33.2,34
1951,30.6,31.3,32.3,32.1,30,27.3,26.8,28.4,31.7,36.1,33.7,32.2
1952,31.8,30.8,31.2,31,28.1,26.1,27.6,30.4,32.7,34.7,32.2,33
1953,31.2,31.6,30.2,30.6,28.5,26.1,25.7,29,29.5,34.7,35.2,32.2
1954,32.4,32.3,31.8,31.3,30.9,26,27.7,28.7,32.1,36.5,33.1,32.5
1955,30.8,30.4,30,30.1,28.4,26.3,27.4,29.5,31,34.7,35.3,32.1
1956,31.3,31.5,31.2,28.9,29.6,27.3,27.2,30.1,30.9,34.4,31.9,30.7
1957,30.8,32.5,31.8,31.3,29.1,27.4,28.5,29.4,33.9,36.5,37.7,32.2
1958,31.7,29.9,30.3,31.1,29.2,26,26.2,27.4,31.6,33.7,35.5,33.9
1959,31.9,30.2,31.6,31.8,32.1,28.3,28,29.3,30.6,34.6,33.2,32.6
1960,32,32.2,30.5,30.3,29.4,26.8,26.3,29.8,31.4,34.4,34.4,32.7
1961,30.6,30.7,31.2,31.1,30.9,27.8,26.5,27.3,31.9,34.6,32,32.3
1962,29.2,30.8,30.1,29.5,26.3,28.1,26.1,28.6,31.4,35.1,33.4,30.1
1963,30.3,28.4,28.6,28.8,27,25.7,27,28.6,31.7,34.2,33.3,32.4
1964,31,31.7,33.3,30.8,27.8,26.6,25.3,27.7,30.7,35.3,33.2,30.1
1965,29.3,31.4,29.5,29.7,27.4,26,26.6,28.9,30.3,32,33.7,33.5
1966,32.4,30.1,30.7,30,28.9,26.2,27.1,29,31.7,33.2,34.3,33.8
1967,31.6,32.2,30,30,28.5,27.3,25.5,27.1,30.1,34.4,34.1,32.8
1968,33.2,31.1,30.8,30,29.4,26.1,27.4,29.4,30.4,34.7,31.4,31.9
1969,30.6,32.8,31.9,30.2,28.3,27.1,26.8,27.8,30.7,34.9,35.3,30.6
1970,31.6,32,32.2,30,29.3,26.3,27.9,29.3,33.7,33.5,33,31.2
1971,29.7,31.1,31.6,31.9,28.1,26.3,27.7,29.7,31.7,33.9,32.6,32.2
1972,30.1,30.8,31.2,30.7,29.4,26.1,26.4,28.1,32.4,33.4,33.1,35.2
1973,31.3,32,32.5,28.7,29.2,25.8,26.8,28.4,33.1,34.2,32.9,31.9
1974,30.8,29.7,29.7,28.3,27.3,26.6,26,29.2,30.6,33.6,34.5,31.1
1975,31.7,31.1,30.6,30.7,29.8,26.5,27.1,27.6,31.1,32.8,33.5,32.3
1976,31.4,30.4,29.6,29.3,27,26.3,26.7,27.2,31.5,33.2,36.2,33
1977,31.8,31.5,30.6,30.1,30.1,27.6,26.8,28.4,32,34.2,33.1,32.4
1978,31.2,32,30.2,29.5,29,25.6,25.5,30.7,32.5,34.7,34.6,30.4
1979,32.1,32.7,30.8,30.7,29.3,26.1,26.3,29.5,32.6,35.4,33.4,32.2
1980,32.3,33.4,30.8,31.3,29.1,26.1,25.2,28,31.6,32.6,35.9,31.9
1981,33.3,31.2,31.7,29.6,27.8,26.3,26.2,28.7,31.1,31,35.3,33.2
1982,31.7,30.8,32.1,30.6,28,27.8,27.3,28.5,30,31.6,33.7,33.9
1983,33.7,32.9,33.6,32.7,31.4,28.6,28,27.7,33.1,33,36.5,33.3
1984,34,31.2,30.5,30.1,30.3,26.5,27.9,28.4,32,35.2,32.9,31.8
1985,32,31,31.5,30.1,28.3,26.5,27.6,27.6,32.3,34.1,32.7,30.8
1986,30.4,31.5,31.1,30.9,29.4,26.3,27.2,29.9,31.3,32.6,33.4,32.2
1987,31.7,34.1,34.7,32.9,31.2,26.9,28.1,29.4,33.1,32.6,35.7,34.4
1988,33.4,30.1,30.6,31.9,28.3,27.6,27.2,28.7,31.8,33.2,32.7,32.6
1989,31.6,28.9,29.6,29.8,28.6,27.4,27.8,29.1,31.7,33.5,34.2,32.8
1990,30.5,31.3,33.2,32.1,29.3,28.1,28.3,28.4,30.5,35,34.9,34.2
1991,32.6,31.4,31.6,29.7,29.3,27.2,27.6,28.7,33.1,34.4,33.2,32.7
1992,34,33.7,32.9,31.8,30.9,27.7,27.7,28.2,32.9,36,34.7,33
1993,30.8,31.5,31.4,32.2,30.7,27.3,27.3,28.1,31.7,34.3,33.2,34.4
1994,32.8,31.5,32.8,31.4,29.7,27.1,26.5,27.9,31.6,31.1,35.2,34.4
1995,31.1,33.2,33.8,31.7,29.2,26.9,27.8,29.3,32,37,35.7,31.2
1996,32.5,30.7,30.5,29.3,28.4,26.8,26.7,29.1,33.1,35,37,32.8
1997,30.9,28.7,31.3,28.9,28.5,30,26.4,29.9,31.4,31.9,35.4,32.8
1998,31.9,32.1,33.3,31.8,30.6,28.3,27.5,28.3,32,34.8,35.2,32
1999,30.6,30.6,30.5,30.2,29.4,27.6,27,29,31.3,32.2,34.8,35.7
2000,31.8,31.1,31.2,30.5,28.6,27.9,26.7,27.8,32.3,31.9,32.6,33.8
2001,31.8,30.9,31.1,30.5,28.8,26.9,27.2,29.5,32.2,33.1,35.5,33.2
2002,32.4,31.8,31.8,30.8,29.8,27.2,28.9,29.7,31.6,34.4,34.5,34.1
2003,32.3,31.9,31.6,29.9,29.5,26.8,26.3,28.9,32.2,35.3,35.9,33.3
2004,33.2,32,32,30.6,28.4,26.6,27.3,30.1,31.7,34,34.2,32.3
2005,32.4,33.2,33.5,32.4,30.3,28.6,27.2,30.9,32.7,35.2,35.7,33
2006,31.9,31.8,31.2,30.4,29.6,27.4,27.7,29.6,31,35,34.5,33.2
2007,30.8,31.6,31.9,31.3,29.5,27.5,27.3,29.6,32.4,34.2,35.2,34
2008,31.4,31.3,30.5,30.1,29.9,27.3,27.8,29.7,32.9,35.9,36.6,33.3
2009,32.5,32.7,31.2,30.3,29.5,28.9,26.5,29.2,33,34.5,34.7,33.7
