1901,7.8,10.1,11.2,11.6,11.5,10.7,12.1,11.7,11.1,9.1,7.6,5.8
1902,5.8,8.8,9.7,10.5,9.6,9.7,13.6,13.6,12,9.2,7.6,6.6
1903,7.7,7.7,10,12.3,10.2,9.8,12.8,10.7,10.8,8.8,6.5,5
1904,6.7,7.8,8.8,11.9,11.6,10,11.7,12,10.8,8.7,7.2,6.3
1905,7.6,8.8,10.3,11,9.1,11.1,12.3,11.4,10.8,9.7,7.8,6.4
1906,5.4,10.3,10.4,10,12.4,12.4,12.3,12.3,11.4,7.2,6.2,2.7
1907,4.4,8.5,10,10.3,10,10.2,12,10.9,10.6,7.5,7.3,3.5
1908,7.1,7.2,12.1,13,14.2,10.5,12.1,10.6,12.2,11.9,6.6,4.7
1909,6,8.8,9.2,9.6,9.8,9.5,11.2,12.3,11,6.8,4.8,5.6
1910,5.4,6.8,9.5,12.4,11,10.3,13.5,12.5,10.8,7,5.7,6.6
1911,6.1,6.7,10.1,11.9,12.6,11.9,12.1,12,10.6,7.9,6.8,5.9
1912,5.3,8.6,8.6,11.1,11.3,10,11,11.4,10.7,8.6,7.5,6.4
1913,7.3,7.6,9.9,11.3,9.3,9,11.8,11.6,10.9,8.7,6.9,6.1
1914,6.5,9.2,11.2,11.2,9.2,11.1,11.4,11.1,10.6,9.4,6.7,6.6
1915,8,9.3,10.6,11.2,11.1,10.9,11.5,11.3,10.7,8.8,7.4,6.2
1916,6.8,9,10.3,11.4,11,10.7,11.5,11.1,10.4,8.5,7.3,6.3
1917,7.3,9.1,10.7,11,11.2,10.7,11.6,11.2,10.5,8.2,6.9,6.2
1918,7.1,8.8,10.1,10.7,11,10.8,11.5,11.4,10.7,8.8,7.4,6.6
1919,8.4,9.6,11.1,11.2,11.3,10.9,11.5,11.6,10.6,8.6,7.2,6.3
1920,7.4,8.7,10.3,11.3,11,10.9,11.4,10.9,10.4,8.7,7.3,6.4
1921,7.4,8.6,10,11.8,10.9,10.7,11.5,11.1,10.7,8.8,7.3,6.8
1922,7.5,9.2,10.6,11.3,11.2,11.2,11.5,11.4,10.6,8.9,7.6,6.5
1923,8,8.7,10.8,10.9,11,10.8,11.2,10.8,10.4,8.4,7,6.5
1924,7.6,9.3,11.1,11.5,11,10.8,11.4,11.3,10.6,8.8,7.2,6.9
1925,6.9,8.7,10.7,11.4,11.1,10.7,11.5,11.3,10.7,8.9,7.6,6.7
1926,7.2,9,10.3,11,11.3,11,11.5,11.6,11,8.9,7.1,6.5
1927,8,8.9,10.6,10.8,11.2,11,11.5,11.4,10.6,8.9,7.3,7
1928,8,9.5,11,11.6,11.3,10.9,11.5,11.3,10.8,8.8,7.2,6.5
1929,7.9,9.6,10.6,11.9,11.2,10.9,11.2,11.2,10.6,8.8,7.4,6.3
1930,6.9,9.1,10.3,11.3,11.2,10.5,11.3,11.1,10.6,8.6,6.8,6.5
1931,7.3,9.3,10.5,11.1,11.1,10.7,11.4,11.4,10.7,8.9,7.7,6.7
1932,7.8,9.2,10.7,11.6,11,10.8,11.3,11,10.6,8.8,7.4,6.6
1933,7.8,9.6,10.8,11,11.2,10.8,11.4,11.4,10.8,9,7.9,6.9
1934,7.6,9,10.9,11.4,11.2,10.8,11.3,11.3,10.6,8.9,7.4,6.4
1935,7.7,9.2,11,11.3,11.1,10.7,11.3,11.1,10.5,8.7,7.2,6.6
1936,7.4,9.3,10.9,11.5,11.4,10.8,11.3,11.1,10.5,9,7.2,6.7
1937,7.5,9.3,10.7,11.5,11.4,10.9,11.6,11.4,10.8,9,8.4,7.1
1938,8.6,9.2,10.3,11.1,10.9,11.2,11.9,11.7,10.9,9.4,7.4,7
1939,7.9,9.9,10.6,11.8,12.2,11.2,11.6,11.2,10.3,9.8,7.5,6.9
1940,9.3,11,11.6,11.5,12,11.8,11.7,11.8,11.4,9.2,7.8,7.8
1941,7.6,9.6,10.9,12.1,11.3,10.6,11.8,11.3,10.7,9,7.5,6
1942,7.4,9.7,10.6,12.1,11,11.4,10.6,10.8,10.5,8.9,7.8,6.8
1943,7.1,8,9.7,10.8,11.2,10,11.3,11,10.4,8.4,7.8,7.4
1944,7.6,9.6,10.5,11.8,11.1,11,11.1,11.1,10.3,9.1,7,6.5
1945,7.4,7.8,10.3,11.6,11.5,10.1,11,10.7,10,8.4,7,6.5
1946,7.5,10.4,10.8,11.1,12.2,10.1,12.4,12.2,12,10.2,8.5,7.7
1947,8.9,10.1,11.1,10.7,11.6,12.8,12.4,12.4,11.4,9.5,9.3,7.2
1948,9.9,11.2,10.2,12.2,11.8,9.5,11,10.7,10.7,8.4,6.9,7.2
1949,8.7,9.6,12,12.8,11,10.3,10.7,11.1,10,9.6,7.8,6.6
1950,7.4,8.8,11.5,12.1,12,10.6,11.8,10.9,10.4,7.9,6.6,6.4
1951,9,12.1,13.8,12.4,13.5,12.2,12.3,11.5,7.2,11.2,10.3,9.7
1952,8,9.5,10.7,12.5,13.5,11.5,11.8,12,12.5,9.9,9.7,9.8
1953,10.1,11.2,13,13.1,13.3,12.4,12.3,12.2,11.5,9.6,11,10
1954,9.6,11.4,12.8,13.6,13.2,11.6,10.6,11.4,12.8,8.7,9.7,8.8
1955,9.7,10.1,12.3,13.3,13,11.6,11.3,10.7,13.1,8.8,7.4,8.9
1956,6.4,6.8,11,10.7,10.7,10,10.9,11.2,9.4,8.8,5.6,6.5
1957,7.6,8.5,10,10.7,10.7,9.5,9.3,10.4,9.9,8.3,6.9,8.1
1958,8.6,8.8,9.7,12.1,11.8,11.2,11.5,11.5,10.3,7.9,6.8,6.7
1959,8.5,9.5,10.6,11.9,11,10.3,11.3,10.6,10.9,8.3,7.1,6.7
1960,7,9.1,10.4,11,11.2,10.6,12,11.1,10.7,7.7,7,9.3
1961,6.4,9.2,10,12,10.6,10,10.7,9.6,10.5,7.3,6.6,4.9
1962,4.7,6.1,10.3,9.9,10.3,9.5,10.7,10.2,10.9,7.8,7.3,6.5
1963,7.8,9.5,10.4,10.7,11,10.4,11.3,10.8,10.1,9.4,8.6,7.6
1964,7.7,8.4,11.1,11.2,10.5,10.1,10.4,10.2,9.6,7.8,6.2,6.5
1965,8.2,7.3,9.7,10.7,11.1,10.4,10.5,10.7,9.9,8.3,7.9,6.5
1966,7.6,10.7,10.2,11.9,11.6,10.2,10.7,10.9,10.2,8.8,7,5.9
1967,6.3,9.5,11.2,11.1,11,10.8,11.4,10.9,9.7,8,8.3,4.1
1968,5.1,9.7,9.7,10.9,11.3,10.9,10.8,10.8,10.3,8.3,6.9,6.6
1969,9.2,9.5,11.6,12.8,12,10.8,11.5,10.8,10.3,8.8,7.8,6.1
1970,9.5,9.7,10.6,11.6,11.8,10.7,10.9,10.7,9.7,8.9,5.5,5.3
1971,7.5,7.6,9.7,10.5,10.6,10.5,10.8,10.2,10,8.7,7.2,6.1
1972,7.8,9,10.1,11.1,11,10.6,11.3,10.8,10.6,8.4,7.3,7.1
1973,7.9,8.7,11.5,12.9,11.9,11.1,11.4,11.1,10.2,7.9,6,3.8
1974,6.6,8,10.4,10.2,11.1,10,10.6,10.8,9.8,7.4,4.5,5
1975,6.5,10.5,11.3,11.8,12.1,10.9,11.5,12.4,10.7,9.1,6.1,5.7
1976,6.9,9.7,10.6,10.8,13.2,12.5,11.5,12.2,12.9,9.9,10.7,10.5
1977,11.3,11.7,13,13.9,11.4,11.3,11.7,11.6,10.6,10.2,7.8,6.6
1978,6.8,9.9,10.7,11.5,11,11.1,12,11.6,11.1,9.6,7.5,7.7
1979,9.6,9.9,10.7,11,12.4,11.5,12.3,12.1,13,9.8,7.5,7.7
1980,8.8,10.3,11.8,12,12.4,11.7,12.1,11.6,12.6,12.4,11.4,10.3
1981,8.7,9.6,11.8,12,12,11.6,12.3,12,11.2,9.2,7.8,6.8
1982,9.3,10.9,10.9,11.6,12.2,11.4,11.9,11.9,11.4,9.5,9.1,8.7
1983,8,10.3,12.6,12.7,12.6,12.1,12.6,12.8,11.6,9.7,8.4,7
1984,6.7,7.4,11.6,12.1,12.5,11.5,11.8,11.8,11,8.7,7.6,5.7
1985,7.1,7.8,10.5,10.9,10.6,9.9,10.6,10.7,9.9,9.2,7,6.4
1986,6.1,9.4,9.4,10.9,11.2,10.8,11.1,10.8,9.6,8,7.4,7
1987,6.8,9.4,11.4,11.6,11.3,11,12.5,12.2,12.1,10.2,8.3,7.8
1988,9.4,12,11.5,11.6,10,11.8,12.9,12.2,11.2,9.6,6.6,6.4
1989,5.7,9.2,11,11.1,11.2,10.4,11.9,11.8,10.8,7.7,6.4,8.8
1990,6.4,10.4,9.5,10.2,10.9,10.1,11.7,11.3,10.3,7.4,6.8,4.7
1991,9.5,10.8,11.5,12.6,12.8,11.9,12.6,12,11.4,8.6,6.9,7.2
1992,7.2,10.4,12.3,13,13.3,12.3,13.1,12.5,10.9,9.5,8.1,5.4
1993,8.6,9.3,11.2,12,11.9,11.4,11.7,12,10.8,9.2,7.3,4.4
1994,7.5,9.3,11.8,12.3,12.2,13.4,12.5,12.5,10.9,8.4,6.9,6.4
1995,6.4,10.2,10.8,12.3,12.2,11.5,12.9,12.6,11.1,10.1,8.9,7.6
1996,9.3,11.4,11.7,12.3,12.3,11.8,12.3,11.5,11.2,8.7,7.9,5.6
1997,8.4,9.1,11.3,11.9,12.6,12.3,11.7,12.2,11.6,7.5,7.7,5
1998,9.1,11.5,9.7,12,11.2,11.1,12.3,12.5,10.5,8.7,3.8,3.2
1999,5.8,6.7,9.9,12,9.6,11.9,11.8,9.6,10.8,8.2,4.2,4.3
2000,4.7,5.8,10.6,12.5,10.6,10.1,12.4,11.2,10.3,8,10.1,4.9
2001,8.4,7.2,10.8,11.9,10.8,10.9,11.3,11.6,10.8,7.8,5.5,5.1
2002,6.8,9.8,10.3,12.7,12.6,10.8,11.9,11.5,9.8,8,8.7,8.4
2003,8.8,8.9,11.1,11.3,11,12.2,12.1,12.3,11.4,7.6,6.3,6.7
2004,8.9,7.5,9.9,11.9,10.8,11.2,11.9,12.1,10.6,8.4,6.2,7.1
2005,6.3,8,11.5,12.7,11.8,11.2,12.2,12.3,11,9.7,6.6,6.2
2006,8.1,10.3,11.2,11.9,11.3,11.2,12.6,12.4,10.8,9.5,7.8,7.7
2007,8.5,9.5,10,11.7,12.2,12.1,12.8,12.6,11.7,8.8,8.5,5.4
2008,7.2,8.1,9.8,11.5,11.8,11.7,12.1,11.9,11,9,7,5.7
2009,7.8,9.1,12,11.2,12,12,12.6,11.3,11.6,8.5,8.2,7.8
