1901,31.3,31.3,31.2,31.3,31.5,31.3,31.1,32.5,32.8,32.4,31.7,31.6
1902,31.2,30.9,31.2,31.3,31.5,31.2,31.4,32.3,32.8,32.3,31.9,31.8
1903,31.4,31.6,31.3,31,31.1,31.1,31.1,32.1,32.7,32.2,31.5,31.2
1904,30.9,30.8,30.9,31,31,31.3,31,32.3,32.6,32.2,31.8,31.6
1905,31.2,31.3,31,31.2,31.4,31.5,31.3,32.3,32.6,32.4,31.8,31.5
1906,31.3,31.2,31.2,31.3,31.3,31,31.1,32.2,32.7,32,31.8,31.3
1907,31.1,30.7,31.3,31,31.3,31.2,31,32.2,32.7,32.2,31.8,31.7
1908,31.3,31,31.2,31.2,31.4,31.4,31,32.1,32.5,31.9,31.6,31.5
1909,31,30.8,31.2,30.9,31.4,30.9,30.9,32,32.7,32.2,31.6,31.4
1910,31,30.9,31,31,30.8,30.8,30.6,31.8,32.1,31.7,31.6,31.2
1911,31,31.1,30.6,31,30.9,31.1,31.1,32.3,32.6,32.3,31.9,32.1
1912,32.2,32.1,31.9,31.8,31.3,31,30.8,32,32.6,32.2,31.3,31.6
1913,31.5,31.1,31.4,31.1,31,31,31.2,32.3,32.6,32.7,32.3,31.9
1914,31.6,31.6,31.5,31.3,31.3,31.1,31.1,32.4,32.6,32.2,31.7,32.1
1915,32,31.9,32,32,31.6,30.9,31.3,32.5,32.2,32.1,31.4,32.1
1916,31.6,31.8,31.8,32.2,31.2,29.7,29.8,31.2,32.7,31.7,31,32.2
1917,32,32.1,32.1,32,31.7,31.7,30.8,31.7,32.1,31.7,32.2,31.1
1918,31.4,30.8,31.7,31.3,29.3,32.9,31.7,33.9,32.9,32.3,31.7,31.7
1919,31.9,31.8,31.6,31.6,31.7,31.1,30.9,32.2,32.7,32.4,31.7,31.5
1920,31.3,31.1,31.3,31.3,30.9,30.8,30.7,31.9,32.4,32.2,31.7,31.3
1921,30.7,30.5,30.9,30.4,30.9,29,28.6,31.2,31.3,31.5,31.4,31.3
1922,31.5,31.3,31.4,31.6,31.5,31.3,31.4,32.2,32.8,32.3,32,31.6
1923,31,31.1,31.2,31,31.3,31.3,31.2,32.4,32.9,32.6,32.2,31.8
1924,32,31.4,31.5,31.5,31.2,31.1,31.2,32.1,32.6,32.2,31.8,31.5
1925,31.1,30.7,31,31.3,31.6,31.5,31.1,32.6,32.6,32.8,32.2,32.2
1926,31.8,31.5,31.4,31.4,31.4,31.4,31.2,32.5,33,32.9,32.5,32.2
1927,31.7,31.3,31.5,31.4,31.4,31.3,31.2,32.4,33,32.9,32.4,32.3
1928,31.7,31.5,31.4,31.4,31.6,31.4,31.2,32.4,33,32.7,32.5,32.2
1929,31.8,31.4,31.5,31.4,31.5,31.4,31.2,32.4,32.9,32.7,32.3,32.1
1930,31.5,31.3,31.4,31.4,31.4,31.4,31.2,32.3,32.8,32.8,32.3,32.3
1931,32,31.7,31.5,31.6,31.6,31.5,31.2,32.5,33,32.8,32.5,32.1
1932,31.6,31.6,31.5,31.3,31,31,31.3,32.5,33,32.8,32.3,32.1
1933,31.8,31.3,31.6,31.3,31.4,31.2,31.2,32.4,33.1,32.6,32.2,32.2
1934,31.5,30.9,31.5,31.3,31.5,31.5,31.2,32.2,32.7,32.7,32.3,32.1
1935,31.7,31.4,31.7,31.3,31.2,31.2,31.2,32.2,32.9,32.9,32.3,32.2
1936,31.6,31.6,31.3,31.2,31.7,31.3,31.2,32.3,33,32.8,32.3,32.2
1937,31.6,31.1,31.7,31.9,31.9,32.1,32.2,33.3,33.6,32.9,32.9,32.6
1938,32.1,31.6,31.6,31.9,31.8,31.6,31.9,32.9,33.6,32.7,32.7,32.4
1939,31.6,31.4,31.6,32.2,32,32.4,32.1,32.4,33.1,33.3,32.5,32.2
1940,31.9,32.2,32.2,31.9,32.3,32.2,32.1,32.7,33.7,33.7,33.2,32.3
1941,32.2,32.1,32.7,32.2,32.7,31.7,32.2,33.3,33.8,34.5,34.4,33.8
1942,32.7,32.6,32.5,32.6,32.3,32.5,32.8,33.9,33.8,34.2,34,32.3
1943,33.7,31.9,33.4,33.1,31.7,32.1,33.3,32.9,33.8,33.9,34,33.2
1944,32.9,31.5,31.6,32.8,33.2,33,33.5,33.5,34.8,34.2,33.2,33.6
1945,33,32.4,32.6,32.7,32.6,31.2,32.6,33.9,34.6,33.7,33.6,33.1
1946,32.5,32.6,32.6,31.7,31.7,32.1,31.2,32.9,33.6,33.6,32.5,31.7
1947,32.4,32.3,32.5,32.2,32.4,31,31,31.6,33.2,32.4,31.9,31.1
1948,31.3,31.3,31.1,31.2,31.8,31.2,31.1,31.9,32.3,32.9,32.2,31.4
1949,33,30.9,31.6,30,30.9,30.7,30.7,31.4,32.5,32.2,32.1,32
1950,31.2,30.5,30.6,31.2,30,30.5,30.4,32.1,32.9,32.7,32.3,30.4
1951,30.8,30.3,30.5,29.9,30.5,30.6,31.4,31.8,33,32.3,31.6,32
1952,31.1,30.8,31.2,30.4,30.9,29.3,30.4,31.2,31.6,32.3,31.4,31.5
1953,30.9,30.8,30.8,31,31,30.6,29.7,32.2,33.1,32.1,31.6,31.5
1954,30.8,30.7,30.9,31.4,30.5,31.2,30.5,32.7,33,31.8,31.7,31.1
1955,31.1,30.9,30.9,31,30.5,31.4,30.4,31.8,32.3,33,32.1,31.4
1956,31.1,30.2,31.2,30.7,30.5,30.7,30.8,31.9,32.9,31.8,31.8,32
1957,31.1,30.7,31,30.4,31.7,31,30.1,32.2,32.3,32.3,31.5,31.9
1958,31.3,31.3,30.4,30.9,30.1,31,32,31.6,33.6,32.7,32.2,32.6
1959,31.1,30.7,31.3,31.1,30.1,31.4,30.7,32.4,33.5,32.3,33.1,31.8
1960,32.9,31.9,32.2,31.5,30.7,31.9,31.7,32.4,33.1,33.2,32.3,31.3
1961,32.7,31.5,32.1,31.8,32,31.6,33.3,35,34.9,34.4,33.5,32.5
1962,32.6,31.9,32.5,32.3,31.2,31.7,30.3,32.3,34.9,33.8,34,33.5
1963,32.8,32.1,31.4,31.9,31.6,32.3,32.5,35.1,35.1,34,32,33.2
1964,33.5,32.1,32,32.1,31.2,32,31.4,32.9,33.9,33.2,32.9,33.4
1965,32.7,32.2,31.8,31.8,32.2,32.2,31.7,33.8,33.7,34.3,32.9,32.7
1966,33,33.7,32.5,32.8,32.4,32.9,31.7,32,33.2,33.2,32.4,32.2
1967,32.2,31.4,31.3,31.4,32.3,32.1,31.5,33.6,34,33.1,32.5,32.2
1968,31.5,32.3,31.6,31.3,31.6,31.5,32.7,32.6,32.5,32.9,32.4,32.5
1969,32.1,32.5,33,32.7,33.3,32.1,31.8,33.1,33.9,33.5,33.7,32.5
1970,31.9,30.7,31.4,32,32.3,32.2,31.7,33.2,33.2,32.7,32.6,31.9
1971,32,31.3,31.7,31.7,31.6,31.5,32.1,32.7,33.2,32.5,32.4,32.1
1972,30.9,31.7,31.3,31.1,31.8,33.2,31.9,33.6,32.3,33,33.1,33.2
1973,31.7,32.1,32.6,32.5,32.3,31.8,30.6,31.3,32,32.4,31.3,30.7
1974,30.3,29.8,30.7,30.4,30.2,30.4,30.1,31,31.3,31.5,32,30.9
1975,30.1,30.3,30.9,31.7,31.1,31.5,29.6,32,32.5,32.4,32,31.3
1976,30.3,30.6,30.3,30.7,30.4,30.4,30.2,31.6,31.4,31.9,31.6,31
1977,31.9,30.5,30.8,31,30.2,30.5,31.5,31.6,32.9,32.1,31.5,32.1
1978,30.8,31.1,30.7,30.9,30.4,30.4,30.9,30.2,31.6,31.5,31.5,30.8
1979,31.2,30.5,30.7,30.6,31,29.3,30.4,32.4,32.1,31.9,31.5,31.1
1980,31,31,30.8,31.5,30.9,30.4,30.3,31.7,31.7,31.6,31.4,32.2
1981,30.7,30,31,31.4,31.2,30.4,29.5,31.2,31.4,31.7,31.7,30.9
1982,30.3,29.4,32.1,30.3,30.5,31.5,30.9,31.3,31.7,31.2,32.4,32.5
1983,31.1,31.1,31.6,31.7,31.7,30.8,31.3,32.3,32,32.4,31.5,31.4
1984,30.3,30.2,30.8,30.7,31.5,30.9,30.8,30.7,33.5,34.4,30.9,31.5
1985,31.2,30.4,30.8,30.1,31,30.2,31,31.9,31.8,31.9,31.3,31.5
1986,30.6,30,30.3,32.1,31.4,31.6,30.1,32.7,33.1,32.7,31.8,31
1987,30.8,30.7,31.4,31.4,31,30.8,31.8,31.6,32.3,33.4,31.9,31.7
1988,31.4,32.1,31.7,31.4,30.9,30.1,31.3,33.4,32.6,32.5,31.7,32.2
1989,31.3,30.3,30.5,30.9,30.4,30.9,30.8,31.9,32.8,31.8,32.4,32.2
1990,30.7,30.9,31,31.2,31,30.8,30.8,32.2,32.6,32.5,32.6,31.2
1991,31.7,31,31.1,31.7,31.5,31.5,31.1,31.3,32.1,32,31.3,32.5
1992,32,31.2,31.7,32,33,32.3,30,32,32.1,32.4,31.6,31.6
1993,31.1,30.6,31.1,31.3,31.6,31.4,31,31.2,32.5,32.4,31.6,31.4
1994,31.4,31.2,31.8,32,31.9,31.2,31.2,32.9,33.3,32.4,32.2,31.5
1995,32.1,31.1,31,31.4,30.3,31.7,32,32.7,32.9,31.9,31,31.6
1996,30.8,31.3,31.4,30.6,30.8,29.9,30.9,32.4,32.3,32,31.3,31.3
1997,31,30.5,30.6,31.7,31.3,30.8,32.1,31.9,33.7,33.4,32.4,32.1
1998,32.7,32.5,32.2,32.3,31.4,30.7,32.1,33.7,32.9,32.8,31.9,31.8
1999,30.7,30.6,31.3,30.6,30.7,31,30.7,31.4,32.3,32.4,32.1,31.5
2000,31,30.9,31.2,30.6,31.5,31.5,29.9,32.8,33.4,32.9,33.2,32.1
2001,31,31.3,31.1,31.9,31.5,30.3,31.5,33.3,32.8,33.4,33,31.9
2002,32.2,31.4,31.6,31.9,32.1,31.6,31.3,33.3,33.5,33.1,32.2,32.3
2003,32.2,31.7,32.6,31.9,31.6,32.3,31.6,31,32.9,33.5,33.1,32.1
2004,32,31.7,31.9,32.2,32,32.5,32.6,33.2,33,32.8,32.3,31.7
2005,31.7,31.7,32,31.7,32.7,32.5,31.6,33.5,33.2,32.8,32.8,32.6
2006,31.5,31.4,31.6,31.8,31.2,31.7,32.6,32.9,33.3,32.7,32.2,31.9
2007,31.9,31.7,31.3,31.8,30.6,31.8,31.4,32.7,33.4,32.8,32.5,31.6
2008,31.1,30.9,30.9,31.4,30.9,30,32.1,33.7,32.6,32.6,32.5,32
2009,30.8,31,31.7,32.1,31.7,30.9,32,33,33.5,33.3,33.1,32.2
