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