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