1901,31.7,33.4,35,35.6,33.7,32.6,31.6,31.5,31,30.6,30.5,30.4
1902,30.9,33.3,35.1,35.5,34.2,33.2,31.9,31.8,30.9,30.8,30.8,31.5
1903,31.8,32.7,35.9,36.3,34.4,32.1,31.6,31.2,30.5,30.3,29.5,28
1904,29.4,32,34.5,34.8,33.8,32.6,31.6,31.8,31.3,31,30,29.5
1905,32.5,34,35,36.1,34,32.6,31.9,32.2,31.4,31.1,31,33
1906,32.9,34.6,35.3,36.7,35,33.2,32.1,32.2,31.7,30.6,29.9,30.7
1907,31.3,33.3,34.2,35.2,33.5,32.4,31.7,31.4,31.2,30.8,30.8,29
1908,31.3,32.9,34.4,35.3,33.8,32.5,31.7,31.5,31.2,30.8,29.6,30.3
1909,31.4,33.4,34.7,35.3,33.5,32.7,31.5,31.8,31.3,31.1,29.9,29.6
1910,32,32.5,34.1,35.2,33.9,32.4,31.8,31.8,30.6,30.6,30.4,29.1
1911,30.8,32.6,34.6,35.7,34.1,32.7,31.8,32.2,31.5,31,31.8,31.7
1912,31.8,33.4,36,35.9,35.4,33.4,31.5,31.1,30.9,30.4,29.3,30.2
1913,30.7,33.4,35.1,36.1,33.1,32.3,31,31.2,31,30.5,29.7,30.2
1914,30.3,33.4,35,36.1,35.2,32.5,31.4,31.3,30.8,30.3,30.7,31.1
1915,31.2,34.1,35.2,35.8,34,32.9,31.6,31.9,30.7,30.4,29.6,28.3
1916,29.8,32.7,35.3,35.6,33.8,32.1,31.6,31.4,30.6,30.1,28.9,29.1
1917,31,32.7,33.7,35.9,34.1,32,31.2,31,30.4,29.7,29.5,29.2
1918,29.9,31.2,33.9,34.5,33.3,32.5,32.1,31.6,31.3,30.8,31.2,31.4
1919,31.8,33.6,35.8,35.8,34.2,32.2,31.4,31.3,30.8,30.5,30,30.6
1920,29.7,33.1,35,35.5,34.4,32.6,31.4,31.9,31,30.1,30.8,30.6
1921,30.4,32.4,34.8,35.1,33.4,32.4,30.8,31.2,30.3,30.2,29.2,30
1922,31.6,33.4,33.8,35.4,34.1,32.4,30.8,31.3,31.4,30.3,29.6,29.6
1923,30.5,31.9,34.1,34.5,32.9,31.9,30.6,30.6,30.5,30.1,30.5,30.7
1924,31.5,33.1,34.8,35,33.9,32.3,30.6,31.3,30.9,30,30.9,28.5
1925,31.3,32.1,34.6,34.3,33.9,32.2,31.4,31.5,31,30,30.3,28.9
1926,31.2,33.3,34.5,36.2,34.8,32.9,31.6,31.1,31,30.2,30.2,30.5
1927,31,33.1,35.3,34.6,33.2,32.1,31.2,31.2,30.9,30.1,30.5,30.4
1928,32.9,32.7,35.4,34.9,33.9,32.2,31.5,31.6,30.7,29.6,29.9,31.2
1929,32.1,33,33.8,34.8,34.5,32.4,31.1,31.3,30.9,30.4,30,31.4
1930,30.7,32.9,33.8,35.4,34.1,32.7,31.3,31.5,31.1,30.5,30.7,31
1931,32.3,33.2,35.9,36.5,34.6,33,31.8,31.6,30.9,29.4,29.8,30.3
1932,30.4,32.9,34,35.6,34.6,33,31.4,32.1,30.7,30.4,30.6,29.8
1933,30.7,34,34.5,35.7,34.6,33.2,31.5,32.1,31.2,30.5,29.4,30.4
1934,30.1,32,34.1,34.9,34.5,33,31.4,31.6,31.3,29.9,30.9,29.7
1935,32.4,34,35.8,35.9,34,32.9,31.6,31.8,30.9,31.1,31.3,30.7
1936,30.9,33.3,33.9,36.1,34.4,32.8,31.7,31.4,31.3,29.8,30.7,32.2
1937,32.8,34.1,36.4,36.3,33.4,32.5,31,31.6,30.5,30,29.9,31
1938,32.3,34,34.8,35.2,33.5,32.3,31.2,31.9,31,30,30.4,30.7
1939,31.8,34.3,34.8,35.6,34,32.6,32,31.8,31.2,31.4,30.9,27.6
1940,30.9,33.6,35.3,36.8,34.6,33.1,31.7,31.4,31.7,32.3,31.9,31.8
1941,34.9,34.8,36.3,37.5,35.1,32.7,31.8,31.9,32.4,31.1,31.7,31.4
1942,31.1,33.7,35.6,35.8,33.9,32.6,31.6,31.7,31.2,30.3,30.4,30.5
1943,31.1,33.3,35.2,34.4,33.9,32.4,31.6,31.9,30.5,30.3,30,29.9
1944,32.2,34,35.3,36.2,34.1,32.7,31.3,31.5,31.3,30.7,30.2,29.4
1945,32,34.2,34.4,35.4,34.2,32.8,31.8,32.1,31.3,30.2,31.5,31.5
1946,31.9,32.6,35.4,34.9,33.5,32.6,31.4,31.4,31.1,31,31,32.2
1947,34.2,34,35.4,34.6,34.8,32.7,31.6,32.2,31.7,31,30.5,31.4
1948,31.7,34.3,35.9,35.6,35,32.9,32,31.8,31.3,30.9,30,30.9
1949,31.2,33.7,35.7,35.4,35,33.4,32.1,32,31.1,30.7,30.4,31.6
1950,31.8,32.9,36.2,35.6,34.1,31.8,30.9,32,30.3,30.1,30,28.8
1951,31.4,33.6,35,35.5,33.7,32.3,31.6,31.4,31.7,30.5,30.9,30
1952,31.6,33.9,34.5,34.9,34.3,32.6,31.5,31.2,31,29.7,30.4,29.2
1953,32.1,33.6,34.8,35.2,33.8,32.4,31.5,31.8,31.2,31.8,30.2,30.1
1954,33.3,33.7,35,35.9,33.8,33.2,32.2,32,30.1,31,30.5,30.5
1955,30.5,34.4,35.8,35.2,34,31.6,31.7,32.1,31.6,30.9,29.1,29.8
1956,30.6,33.7,35.2,34.7,33,32.2,31.6,31.1,30.9,30.8,29.7,29.8
1957,31.7,33.2,34.1,35.2,36.1,33.1,31.5,31.7,30.9,30.3,31.6,31.9
1958,32.6,33.3,36.6,36.8,35.4,32.9,31.3,31.9,30.3,29.7,29.6,29.8
1959,31.6,34.6,33.6,35.8,34.9,34.5,31.5,31.5,30.8,30,31.1,31.7
1960,32,32.6,34.9,36.1,34.2,32.1,32.1,31.6,31.1,30.5,31,29.9
1961,30.7,33,35.2,35.5,33.4,32.4,31.4,31.5,30.7,30.3,30.6,31.1
1962,30.2,32.9,34.8,35.1,34.3,32.7,31.3,31.7,30.7,31,31.1,30.5
1963,28.7,32.4,34.4,35.9,35,33,31.7,31.4,31.2,31,31.7,30.5
1964,32.1,33.5,35.5,36,32.8,32.7,32.5,31.3,30.9,30.7,28.8,29.2
1965,30.6,33.1,34,35.2,33.8,32.3,31.3,32,30.1,31.3,31.4,32.1
1966,33.1,33.9,35.3,35.4,32.2,33.1,31.3,31.2,30.7,31.4,30.7,31.1
1967,29.8,33,35,35.1,33.8,33,31,31.2,30.3,29.7,31,29.5
1968,31.2,32.8,34.8,34.6,33.7,32.6,31.6,30.9,30.6,30.6,31.6,32.1
1969,33.1,33,35.5,35.7,34.4,33,30.9,32,31.1,31.3,29.6,29.3
1970,31.4,32.5,35.4,34.6,33.9,32.8,31.2,30.8,30.6,29.8,30.1,30.7
1971,29.5,31.8,33.5,35.3,34.5,31.3,31.2,31.6,31.5,29.6,28.8,30.5
1972,30,32.5,33.8,33.6,34.6,32.3,30.9,30.9,30.8,31.6,30.8,30.8
1973,31.5,33.8,35.4,36.2,34.6,33.4,31.5,31.9,31.2,30.4,29,29.4
1974,30.4,31.5,33.4,34.5,33.9,32.4,32.1,31.3,32,30.2,30.5,30.5
1975,31.1,33.4,34.4,35.4,33.9,31.6,31.7,31.3,31.4,30,30.3,28.2
1976,30.6,32.7,34.1,35.4,33.6,32.7,31.5,31.6,30.6,30.6,29,30.6
1977,32,32.4,35,35.4,34.6,34,31.8,31.8,30.8,31.5,30.8,31
1978,33,33.6,35.8,35,33.5,32.8,31.2,30.8,30.1,29.9,31,31.6
1979,33.3,34.8,37,35.6,33.7,32.9,31.3,31.8,31.2,30.8,31,31.6
1980,32.9,34.5,35.9,35.6,34.3,32.3,31.4,31.4,30.5,30.2,30.4,30.1
1981,30.4,32.9,34.1,33.7,33.6,31.8,31.4,31.9,32.3,30.5,30.1,29.1
1982,31.2,33.3,35,34,34.1,31.8,31.1,30.8,30.1,31.3,32,29.5
1983,31.4,34.1,35.7,37,35.5,32.6,32.4,32.2,32,30.2,29.5,29.7
1984,30.7,33.5,34.6,35.6,33.4,31.6,31.6,30.7,30.6,30.1,30.7,30.8
1985,32.3,34.2,35,34.3,33,31.5,31.2,31.5,30.4,30.4,31.2,30.2
1986,30.8,33.8,34.7,35,32.8,32.6,31.4,31.4,31.2,30.8,30.6,30.8
1987,32.3,33.9,35.2,36,34.5,33.2,32.1,32.3,31,31.8,31.3,29
1988,32.7,33.5,35,35,33.4,32.2,32.2,31.8,32,29.3,29.7,30.3
1989,33.1,33.5,34.2,35.6,33.8,32.3,31.8,31.7,31.3,30.6,31.1,31
1990,32.7,34.1,33.7,36,33.8,32.5,31.9,32.2,31.3,30.3,30.9,31.4
1991,33.5,34.4,36.2,36.6,35.4,33.6,31.8,31.5,31.2,30.4,31.2,31.6
1992,30.9,33.4,36.2,37.2,35.4,33.5,32.1,31.6,31.7,30.1,30.5,31.6
1993,31.6,33.4,34.9,35.3,34.9,33.9,32,31.7,31.4,31.3,31.5,30.1
1994,32.5,34.5,34.2,36.3,34.4,32.6,31.6,31.7,31.3,31.1,32.1,32.6
1995,32.6,33.1,34.8,36.5,34.9,34.3,32.4,32.7,31.8,31.4,30.8,30.8
1996,32.4,32.8,35.3,34.9,33.5,33.2,32.3,32.7,31,31,30.6,29.9
1997,31.5,32.8,35,35,34.8,33.9,31.8,32.3,32.3,32.3,32.3,33.2
1998,34.1,34.5,36.8,36.7,35.7,33.9,32.8,32.6,31.7,31.9,31.1,30.5
1999,31.6,33.6,34.7,35.2,33.2,32,31.5,32.4,31.8,31.3,30.2,28.5
2000,32.3,32.9,34.9,34.8,34,32,31.8,32.5,32,30.5,30.7,31.9
2001,32.9,34.1,33.5,36.8,34.4,32.5,32.2,32.1,32.4,32,29.6,31.1
2002,32,33.9,34.6,35.3,33.5,33.3,32.4,31.6,31.1,31.7,31.8,32.6
2003,32.2,33.8,34.2,36.3,34.6,33.2,31.9,32.5,31.7,31.5,32.8,31
2004,32.5,31.7,35.4,35.9,34.8,32.2,31.9,31.9,31.8,31.4,32,31.7
2005,32.2,35.1,34.6,35.9,33.7,33.3,32.2,32,32.2,29.2,31.5,30
2006,32.7,34.2,34.5,35.8,34.2,33.1,31.9,31.9,31.7,31.4,31.8,31.9
2007,32.1,33.6,35.4,36,32.8,31,32.1,31.6,31.8,30.9,29.9,32.2
2008,32,32.8,34.6,35.9,33.1,32.6,32.6,32.3,31.5,32,30.2,30.5
2009,30.5,34.2,34.3,35.4,33.7,32.9,32.5,33.1,31.9,31.7,31.7,33
