1901,6.2,6.8,8.8,10.2,11,11.8,11.4,10.7,11.9,11.1,9,6.1
1902,6.1,7,9.7,11.1,12.1,12.3,11.4,11.1,11.9,10.3,8.9,6.5
1903,5.9,7.2,8,9.8,10.6,11.5,11,10.8,11.2,9.1,7,5.2
1904,5.4,7.9,9.9,10.9,10.7,11.7,10.5,10.6,11.3,9.5,7,6.1
1905,5.2,4.8,8.5,9.9,11.6,11.6,11,11.7,11.2,9.5,7.5,4.4
1906,5.4,6.8,8.1,10.2,11.1,11.9,11,10.7,11.3,9.3,7.2,6.4
1907,7,7.2,9.5,10.3,10.7,11.7,10.7,10.9,11.5,10,6.9,6.2
1908,5.9,6.6,9.1,10.5,11.7,12.3,10.8,10.9,10.9,9.1,6.8,6.4
1909,6.2,7.1,9.6,10.3,11.8,11.8,11,10.6,10.5,9,7.7,5
1910,5.2,5.8,7.5,9.3,10.5,11.3,10.6,10.8,10.6,8.7,6.8,5.2
1911,6.2,7,8.5,9.9,9.4,11.4,10.3,11,11.5,9.4,6.4,5.6
1912,5.5,5.5,8,10.5,11.2,10.8,10.4,11,11,9.5,5.9,5.6
1913,5.8,6.6,8,8.5,10.1,10.4,10.3,10.9,10.4,9,7,5.4
1914,5.9,6.4,6.9,9.4,10.3,10.6,10.5,10.6,10.7,9.5,6.7,5.1
1915,5.2,6.4,6.9,9,11.5,12.2,11.1,11.2,10.9,9.4,6.9,6.1
1916,7,6.8,8.6,9.7,10.6,11.8,10.4,10.2,10.3,8.5,5.6,5.1
1917,5,5.7,7.4,8.4,10.8,9.5,10,10,10,8.1,7,4.1
1918,4.2,6.3,6,9.3,10.3,10.1,10,9.8,10,9.4,7,5.2
1919,3.1,6.1,7.2,8.2,10.4,11.3,10.5,10.8,10.5,9.5,7,5
1920,4,6.4,8.2,10.3,9.2,10.2,10.5,10.3,10.3,8.7,6.6,4.6
1921,3.8,4.9,7.7,9.3,9.4,11.3,10.1,10.3,10.5,7.8,6.4,4.9
1922,5.2,6.4,7.8,10.1,10.7,10.1,10.2,10.4,10.6,8.3,6.8,5
1923,4.8,5.8,7.6,9.8,11.1,11.2,10.2,10.4,11.2,8.8,6.3,5.2
1924,4.5,5.4,8.5,9.8,9.6,10.9,10.4,10.5,10,8.3,5.3,4.9
1925,4.2,5.3,6.6,8.8,8.7,10.1,9.9,10.2,10.4,9.5,6.3,3.9
1926,4.3,4.5,7.6,8.1,8.7,11.7,11.9,11.7,10.6,9.4,4.3,3.6
1927,1.7,5.4,6.8,8.2,10.2,12.3,10.2,10.3,10,8.9,5.7,5.5
1928,3.7,5.5,7.1,8.7,10.3,11.1,10.2,10.1,10.5,8.5,5.8,3
1929,3.4,5.7,7.2,9.3,8.5,10.4,9.6,9.5,10.2,9,7,5.7
1930,5,5.8,8.3,7.2,8.7,10.2,9.1,8.4,10.7,8.8,5,3.7
1931,3.6,6.3,6.6,7.5,10,9.6,10.7,10.4,10.4,8.3,4.8,5
1932,3.9,5.7,6.2,7.8,9.7,10.5,9.7,11,11,8.5,3.3,3.7
1933,6.5,7.1,7.1,9.4,10.1,10,11.7,11.4,10,9.1,5.3,4.4
1934,5.2,6.6,8.2,8.1,9.3,11.2,10.9,10.7,10.8,8.2,5.5,4.6
1935,2,5,6.8,8.8,10.7,11.2,10.7,11.7,10.4,8.8,4.9,3.5
1936,4.3,6.1,9.1,9,8.6,11.5,12.4,10.9,11.3,9.5,6,3.3
1937,4.8,6.8,7.3,10.5,10,10.9,10.8,10.6,10.9,9,5,4.6
1938,4,5.8,8.2,9.4,10.3,11.2,11.1,10.3,10.3,7.6,5.9,2.9
1939,4.5,6.2,7.4,9.6,10.8,11.3,10.3,11.1,10,9.2,4.2,3.9
1940,3.3,6.2,6.6,11.9,12.7,11.6,11.2,11.6,10.3,8.5,6.9,4.3
1941,5,6.2,8.6,12.1,10.8,13.9,12.5,13,12.4,11.4,8.3,6.8
1942,5,7.8,8.1,11.1,12.2,13,11.4,11.8,11.4,10,7.1,6.2
1943,5.8,5.1,8.5,10.7,12.8,12.4,11.4,13.4,12.5,9.4,6.6,6
1944,5.4,8.5,11.4,10.9,12.3,13.2,12.9,11.9,13.3,9,8.2,6.2
1945,5.2,8.8,11,10.7,10.6,12.1,12.7,11.7,11.5,9.9,7.6,5.2
1946,5.2,7.3,8,9.6,10.5,11.3,9.3,11.7,11.3,9.6,8.2,5.5
1947,6.1,6.7,9.8,11.4,12.2,13,10.4,11.8,10.6,10.4,8.8,6.6
1948,6.1,8,10.1,10.1,11.4,12.6,11,11.6,12.2,10.6,9.3,6.6
1949,5.8,8.3,9.1,11,11.8,12.9,12.1,11.6,11.2,11.5,5.9,6.4
1950,6.6,7.4,8.3,10.2,11.6,12,11.2,10.5,12.1,9,6.3,3.8
1951,4.5,5.1,8.3,10.3,10.5,12,10.8,11,11.4,9,7.2,5.8
1952,6.6,6.6,9.4,10.7,10.4,11.8,10.6,10.7,10.7,6.5,7.7,4.6
1953,3.9,6.4,9.2,10.9,10.7,12,10.6,11,11,9.4,6,5
1954,5.4,5.9,7.7,9.2,10.2,11.7,10.7,10.6,10.8,9.1,6.5,4.4
1955,5.5,5.4,8.7,10.6,10.7,12.2,10.9,11.1,10.8,8.4,7.3,5
1956,4.7,7,8.5,10.3,10.7,11.3,10.1,10.4,10.7,9.2,7.7,6.9
1957,6.5,9.3,8.5,11,11.8,12.5,11.5,11.4,11.2,9.3,7.4,5.8
1958,5.6,7.5,9.9,11.4,11.5,12.9,11.8,11.5,11.8,11.4,9.2,7.7
1959,6.7,8.8,9.8,11.1,11.7,12.8,11.2,11,11.5,10.6,7.4,6.1
1960,6.7,5.9,8.3,9.3,10.8,12.2,11.9,12,12.1,11,8.2,7
1961,6.4,6.7,9.7,10.7,10.9,11.9,10.7,10.7,10.9,8.7,8.1,6.6
1962,5.1,7.1,8.7,10.7,10.7,11.9,11,11.4,11.4,9.8,6.6,7.1
1963,5.8,5.6,10.3,11.1,11.2,12.5,11.6,11.4,11.9,9,7.1,5.8
1964,6.7,8,9.7,10.9,11.4,12.2,11.6,10.9,11.9,8.3,7.8,6.4
1965,6.4,6.8,8.4,10.4,11.4,12.3,10.8,10.8,11.3,9.6,7.3,7.7
1966,6.6,7,9,11.2,11.7,12.4,11.3,11.3,11.3,10.2,6.2,5
1967,5.3,6.5,9.2,10.6,10.7,12.2,10.8,10.6,11.4,9.5,7.3,6.8
1968,6.6,6.5,7.6,10.4,11.5,12.2,11.1,10.7,11.8,9.9,7.7,6.7
1969,6.4,8.9,9.1,11.3,11.9,12.6,11.7,12.2,12.7,10,7.2,6.5
1970,5.7,7.2,8.3,10.9,10.3,12.2,11.2,11.6,11.7,9.9,5.5,5.1
1971,6.6,4.9,8.6,9.2,10.7,11.4,10.2,10.5,11.1,10.4,7.6,6.6
1972,6.5,6.4,9.9,11.7,12.1,12.3,10.8,10.8,11.4,9.7,9.4,6.3
1973,6.1,7.8,9.3,11.6,11.7,12.5,11.5,11.4,11.6,10.1,8,5.2
1974,6.5,5.7,8.4,10.8,10.9,12.6,10.3,9.7,11.4,8.3,7,6.6
1975,4,7.5,9.7,10.7,11.4,12.1,10.8,11.4,11.1,10.2,6.6,6
1976,5.4,5.8,8.5,10.4,10.8,11.2,10.7,10.8,11.1,10.2,8.6,6
1977,4.3,6.7,7.4,9.4,10.7,10.9,9.8,11.2,10.6,9.8,8.1,6.5
1978,5.5,6,7.5,10.1,10.6,11.3,10.4,10.7,10.5,9.2,8.7,6.4
1979,3.7,6.2,8.7,10.7,10.3,11,9.9,11.2,10.9,9,7.5,5.9
1980,5.8,5.7,7.7,10.1,11.2,11.2,10.7,10.7,10.7,9.3,6.7,4.9
1981,5.3,7.1,9.7,10.3,10.8,12.7,11.2,12.3,11.1,10.7,6.6,6.9
1982,6.6,7.8,9.1,10.6,11.3,11.7,11.3,10.7,11.5,10.3,7.5,6.3
1983,5.6,5.8,8.3,8.7,10.9,11.7,11.9,11.9,11.6,10,9.3,6.9
1984,6.2,7.1,8.3,11.1,10.2,11.2,10.8,11.2,11.6,10.2,6.1,5.9
1985,5.6,6.4,9.2,10,10.9,11.4,10.4,10.8,10.2,9.9,7.7,6.3
1986,4.2,6.4,7.4,9.4,10.6,11.3,10.4,9.5,10.6,9.7,8.6,6.2
1987,3.7,6.8,7.8,8.9,9.9,11.9,10.6,10.8,9.8,8.3,7.2,5.7
1988,5.5,6.6,8.6,10.2,10.3,10.9,10.5,12,11.4,9.2,7.6,5.8
1989,5.3,5.5,6.9,8.8,10.7,11.6,10.7,11,11,8.2,7.2,5.1
1990,5.3,6.9,8.6,10.1,11.1,11.4,10.8,10.6,10.7,9.9,7.8,5.8
1991,6.3,6.7,8.4,9.8,11.1,12.2,11.6,10.7,10.6,9.2,6.8,6.2
1992,6.8,5.8,10,10.7,11,11.7,10.4,10.4,10.8,9.2,7.6,5.8
1993,5.6,7.1,8.2,10,10.1,11.4,10,10.7,11.4,8.9,6,4.7
1994,5,6.6,8.1,9.5,11,11.1,9.7,9.3,10,9.3,7,6.8
1995,7,7.2,9.4,10.5,11.4,12,10.9,12.4,11,8.9,7.8,6.5
1996,3.6,5.4,8.4,9.1,10.9,11,10.3,11.2,11,9.6,7.2,5.5
1997,5.3,7.2,9.8,10.8,11.2,11.5,10.7,11.2,10.8,10.3,9.7,5.8
1998,6,6.9,8.2,10.2,9.7,11.3,10.9,11.7,12.1,10.7,9.4,5.5
1999,6.5,7.7,9.4,11.5,11.4,12.3,10.5,11.2,10.6,8.7,6.2,5.2
2000,6,7.4,9.9,10.2,10.8,11.4,10.8,10.6,10.6,9.9,8.2,5.6
2001,5.9,8.1,9.3,10.4,10.1,11.1,10.6,10.5,10.9,9.6,7.5,6.4
2002,6.1,6.7,8.4,10.6,10.7,12,10.9,10.7,11.1,10.7,7.6,5.9
2003,6.5,6.2,9.7,10.3,11.5,11.8,11.1,11.9,12.3,9.7,7.4,4.4
2004,6,6.4,9.7,10.6,10.8,11.6,11.1,12,11,10.8,7.6,5.3
2005,6.2,8,8.5,12.1,10.9,11.9,11.1,10.1,10.8,10,7.3,5.8
2006,5.4,6.6,9.2,11.5,10.2,11.5,10.3,11.9,11,10.8,7,6
2007,7,6.9,9.4,10.8,11,12.5,11.5,11.1,11.5,8.9,6.7,7.2
2008,6.5,7.8,8.9,10.2,11.6,11.2,10.9,12,11.4,8.9,6.4,5.9
2009,6.2,7.7,9.7,11.2,10.8,12.6,12,12.2,11.5,11.2,7.4,6.6
