1901,13.9,11.5,10,7.2,4.1,2.4,0.3,2,4.2,6.4,8.8,11.5
1902,12.4,11,9.8,7.9,3.8,0.7,-1.4,0.8,2.3,5.5,7.8,11.1
1903,12.6,10.5,9,6.6,4.7,1.3,0.6,1.4,3.2,6,8.6,10.7
1904,13.5,11.2,10,7.4,3.8,1.6,1.1,1.7,2.9,5.4,8.6,10.6
1905,13.5,11.3,11.4,6.8,1.5,1.5,-0.5,0.7,3.4,5.4,8.8,10.6
1906,13.2,12,10.8,7.1,4.5,-0.7,-1,1.5,3.3,6.8,9.1,10.6
1907,11.9,11.5,9.2,6,3.2,-0.6,0.3,1.1,2.4,5.4,8.1,8.8
1908,11.9,11.1,9.8,5,3.4,1.6,0.1,0.8,2.4,6.3,7.7,9.6
1909,11.9,10.4,9.3,6.2,2.6,-0.2,-0.5,0.8,2.8,5.7,7.2,9.8
1910,11.2,10.8,9.3,5.3,3.1,-0.5,0.4,1.5,3.9,7,8.9,11.8
1911,11.4,10,9.2,4.9,3.1,1.5,0.9,0.8,2.8,6.2,8.6,11
1912,13.4,10.5,9.6,6.8,1.9,0.9,1.2,1.1,3.7,6.2,7.6,10.4
1913,13.1,10.9,9.7,5.8,2.2,0.4,-0.4,0.8,4.8,5.9,8.3,11
1914,11.9,12.1,10.1,6.1,3.9,-0.1,0.6,1,2.6,6,6.6,11
1915,11.8,11.4,10.7,5.6,2.2,0.4,1.4,1.8,4.2,6.7,8.8,10.8
1916,12.5,12,9.3,6.8,4.5,0.6,0.1,2,3.6,6.6,8.7,10.6
1917,11.8,12.4,9.5,7.2,4.1,1.9,1.4,1.5,3.9,7.1,9.8,10.8
1918,11.8,12.7,9.6,6.6,2.3,1.2,-0.7,1.1,2.7,6.7,7.6,11.8
1919,12.2,12,11.2,5.8,4.1,1.3,0.8,2.6,2.9,5.8,7.1,11.3
1920,12.4,12.1,9.2,7.7,3.5,1.3,-0.2,2.9,3.8,4.9,8.6,10.8
1921,12.2,11,9.9,7.3,2.9,0.7,1,1.1,3.2,6.2,9.2,10.9
1922,11.5,11.3,9.1,6.6,4.5,0.3,1.4,2,4.1,5.9,8.8,11.6
1923,12.3,11.9,9.3,5.4,4.2,0.6,-1.4,0.1,3,4.8,8,9.7
1924,12.2,10.9,9.6,7,3.8,2,0.5,2.2,3.6,7.2,8.3,11
1925,11.6,10.9,9.6,6.1,3.5,0.7,0.5,1.8,4.2,5.8,8.4,11.2
1926,12,12.1,8.7,5.6,4,1.3,-0.8,2.1,3.1,4.9,8.2,11.2
1927,11.9,11.9,10.4,7.4,3.7,1.2,0.5,1.9,2.6,6.3,8.4,10.6
1928,11.4,10.6,8.9,6.2,3.8,-0.1,0.1,2.8,4.9,7.2,8.6,9.9
1929,12.6,12.2,9.7,7.6,4.1,2,1.3,1.8,3.3,6.1,7.9,9.6
1930,12,12,8.9,7.3,3.7,2.2,-0.9,0.8,4.7,5.4,9.6,10.4
1931,13.4,13.4,10.4,7.3,3.9,3.2,0.4,2.7,4.1,6.6,8.9,11.9
1932,13.4,13,10.5,7.6,4.9,2.6,2.4,1.9,4.6,7.5,9.1,11.4
1933,12.5,11,8.6,7.3,5.2,2.6,0.7,3.7,4.7,6.2,8.3,9.9
1934,12.5,10.6,9.6,7.3,4.6,1.3,2.3,3.8,5.4,7,9.6,11.5
1935,13.2,11.6,10.9,8.2,6.3,3.2,2.1,3.8,4,5.8,8.8,9.3
1936,11.8,13.4,10.2,7.6,3.9,1.5,3.2,2.5,4.2,6.3,10.9,8.8
1937,14.2,10.6,8.6,8,4.3,3.2,1.7,1.3,4.9,7.7,7.7,12.2
1938,10.3,12,8.6,6.9,5.2,2.5,1.4,2.3,4.4,6.3,8.2,10.7
1939,11.5,10.8,9.7,6.6,4.3,3.8,2.7,3.7,4.8,6.6,8.5,13.4
1940,12.2,12.8,9.4,6.6,4.7,3.4,3.3,2.7,5.2,7,9.1,9.7
1941,14,11.8,11.2,5.4,3,3.3,2.6,3.6,4.2,7.8,6.9,10.2
1942,12.9,11.2,8.9,7.6,4.1,1.7,0.8,2,4.8,7,10,12.4
1943,13.7,12.9,9.5,9,6.2,1.7,2.1,2.3,4.7,7.2,9.3,14.3
1944,14,13.2,11.7,8.6,5.1,2.5,1.7,1.4,4.5,5.6,9.4,12.4
1945,15.3,13.1,11.4,7.9,5.2,2.9,1,2.7,5.5,7.1,8.6,10.9
1946,11.8,10.5,10.2,8.7,4.8,3.3,2.7,3.4,4.8,6.6,7.2,10.5
1947,10.6,11.6,10.1,7.1,5.1,3.9,1.6,2.7,4.2,7.7,11.2,10
1948,12.5,12.3,9,7.4,6.1,3.3,0.9,0.8,4.6,7.2,9.8,10.2
1949,14.1,11.1,8.5,8.2,3.8,2.1,1.9,2.3,4.5,8.3,9.9,10.4
1950,13.1,12.3,10.3,6.7,3,2.6,2,1.4,2.6,5.9,8.1,10.1
1951,12.2,9.9,9.3,8.3,5.6,3,1.4,3.3,2.2,6,7.1,12.5
1952,13,13.6,8.9,9,4.8,0.4,2.6,2,5.9,7.8,10.5,13.9
1953,12.9,14,10.1,8.2,5.8,3,1,2.5,3.6,6.1,9.4,12.6
1954,11.8,11.7,12.1,7.1,4.6,2.2,1.1,2.7,3.4,6.1,9.6,11.4
1955,14.2,11,10.1,7.3,3.4,1,0.1,1,3.4,7.3,11.3,9.8
1956,9.9,11.7,9,5.9,2.9,1.9,2.7,2.3,3.3,7.7,11.5,13.4
1957,12.9,13,11.4,6.5,5.3,2,0.7,2.3,4.5,6.1,10.2,10.3
1958,12.8,11.4,11.7,6.7,3.5,2.1,4.1,1.4,3.6,9.2,8.2,11.2
1959,12.5,12.9,9.7,4.5,4.7,2.9,1.1,1.7,3.6,6.1,9.5,12.7
1960,15,13.4,11,7.5,5.1,1.4,-0.2,2.9,4.4,6,9.1,11.4
1961,10.6,11.1,9.6,6.7,3.8,0.2,1.2,3.3,3.7,6.4,8.6,11.1
1962,12.5,13.3,11.5,6.2,4.7,3,0.3,3.2,4.1,8.2,10.6,12.4
1963,12.1,14.2,9.3,7.8,4.4,1.6,2.5,2.4,2.7,7.2,6.8,11.2
1964,13.1,9.9,9,6.8,4.8,0.3,1.5,2.3,3.2,7.8,9.6,10.9
1965,12.7,10.7,11.1,6.5,2.6,4.3,-0.4,2.1,3.2,5.8,9.1,9
1966,12.3,9.5,10.1,7.8,6.2,2.1,0.6,2.2,3.3,4.9,9.7,9.4
1967,11.8,10.7,10.1,7.3,4.7,-0.4,1.4,1.1,3.6,5.9,9.1,12
1968,12.8,10.4,9.3,7.7,5.9,1.5,2.9,2.8,4.5,4.9,9.7,9.5
1969,12.7,10.6,9.7,7.3,4.8,1.9,1.9,1.8,3.6,5.1,8.8,12.6
1970,12.1,12.2,9.9,7.3,4.5,1.2,2.5,1.3,5.2,6.3,8.7,9.1
1971,9.4,10.1,9.1,5.8,3.6,-0.4,2.4,2.2,4.7,7.2,8.9,8.4
1972,12.3,11.6,7.7,7.8,2.2,1,0.1,1.2,3,4.9,9.5,12.2
1973,11.4,11.4,10.4,6.6,3.9,2.5,-1,2.2,3.5,6.3,9.7,10.6
1974,10.8,11.1,9.7,6.9,3.5,0.9,1.2,2.5,3.6,6.9,9,10.3
1975,14.8,11.1,9.6,7.1,4.8,3.1,0.2,1.6,4.1,6.8,7.2,9.5
1976,10.4,11.8,8.4,6.4,5,-0.1,0.3,1.5,3.9,5.9,8.7,10.6
1977,12.1,11.7,10,8.6,4.8,2.3,1.6,2.4,5.1,7.3,8.2,12.7
1978,12.1,13.1,10.3,8.2,5.3,1,2.7,1.7,4.8,5.6,9.2,12.3
1979,15,12.5,10.5,8,5.2,3,2.1,3.3,2.8,6.1,8.5,11.8
1980,13.7,12.3,11,4.5,3.9,2,0.9,2.9,5.1,7.1,8.1,11.4
1981,12.3,12.1,10.5,8.1,4.2,3.1,1,2.6,3,7,8.4,11.4
1982,14.1,10.8,9.8,8.6,6,-0.4,-0.3,2.5,5.1,5.2,8.6,12.6
1983,14.6,12.1,10.4,7.4,4.1,0.4,0.6,2.3,3.1,7.6,10.6,14.4
1984,13.6,10.7,10.2,5.9,2.8,-2.2,-1.3,1.6,5.3,5.9,9.4,11.4
1985,13.2,12.3,8.6,5.7,4.6,4.4,2.4,3.1,4.7,6,11.1,11.7
1986,12.1,11.6,9.2,6.5,4.6,2,2.1,1.5,4.4,8.2,7.5,11.7
1987,13.6,13,11.2,7.4,3,3.8,2.7,1.3,4,7.6,10.6,11
1988,12.1,14.3,10.3,7,2.9,1.9,-0.8,1.5,4.3,5.5,9.4,10.7
1989,13.4,13.3,9.7,7.2,3.4,3.8,1.8,1.9,4.2,7.9,9.9,11.2
1990,12.4,14,10.2,5.4,4.3,3.1,2.3,3.7,4.2,7.1,9.3,11.3
1991,12.3,12.9,10.2,7.1,4.3,2.1,0.6,1.2,4.6,5.6,9.7,9.4
1992,13.7,11,11,6.5,2.1,0.2,-0.9,3,4.5,5.6,9.9,10.6
1993,13.7,13.2,10.8,7.2,3.3,2,0.2,3.6,4.8,7,8.3,11
1994,13.5,11.5,11,6.5,5.7,3.4,1.7,2.3,4,6.5,8.8,11.5
1995,11.2,11.3,9.6,7.7,5.4,1.8,-0.3,0.3,4,6.3,9.2,14.3
1996,11.6,11.2,10.1,6.1,4.9,3.5,2.4,3.2,5.4,7.1,8.9,10.2
1997,12.6,9.9,11.2,8.6,5.1,3.2,2,2.7,3.8,5.8,8.4,11.2
1998,12,13.6,9.9,7.1,6.9,3.3,3.6,3.3,3.4,4.9,9.1,12
1999,14.6,12.5,9.5,6.8,3.6,0.1,0.1,3,4.6,8,10,11.4
2000,12.4,11,8.5,7.4,4.1,1.9,0.1,2.1,2.4,7.3,7.7,10.1
2001,11.4,11.8,9.1,6.1,3.8,2.1,-1,3.7,4.1,8,8,13.2
2002,13.5,13.2,8.1,6.4,4.3,-0.1,2.7,2.9,4.2,5.8,8.3,11.4
2003,12.5,11.2,11,6.2,5.2,3.2,1.7,2.7,4.7,7,9,9.2
2004,11.2,14.3,11.3,6.6,3.5,3.8,1.6,2.7,4.6,7,9.7,11.5
2005,11.9,15.2,9.6,6.5,3,0.9,1.4,1,4.1,6.4,9,12.2
2006,12.3,13.4,9.2,7.6,4.1,3.1,1.7,2.1,4.3,5.9,8.3,10.1
2007,13.1,11.2,10,7.4,3.1,1.2,0.4,0.1,4.7,6.6,8.2,12.4
2008,15.3,15.4,11.7,6.6,3.6,2.7,2,1.6,3.8,7.1,10,13.8
2009,13.8,12.4,10,8.4,4,2,1.3,3.5,3.7,5.5,6,10.1
