1901,13.8,12.7,9.6,9.1,3.1,0.3,0.4,3.5,6.1,8.4,10.7,12.3
1902,12.2,12.8,11.2,8.4,4.7,0.7,1.3,3,7.2,8.2,10.6,12.6
1903,13.7,12.4,10.9,8.2,5.5,0.9,0.8,4,5.6,9,10.5,12.1
1904,13,11.7,10.4,8.2,4.8,1.9,0.9,3.5,6.2,8.9,11.5,11.3
1905,13.1,11.6,9.6,8.2,4.3,0.9,0.9,2.8,6.9,9.5,10.5,12.4
1906,14,11.6,10.5,7.1,4.5,1.7,0.7,2.8,6.1,7.8,10,11.7
1908,12.2,11.9,10.4,6.6,3.8,1.6,0.7,3.6,7.3,8.6,10.5,12.1
1909,12.6,11.3,9.9,7.2,4,0.4,1.3,3.9,5.9,8.6,10,12
1910,12,10.7,10.4,6.7,2.9,-0.6,-0.2,2.3,5.4,7.8,8.4,11
1911,11.9,12.3,9.7,6.7,2.9,-0.9,-0.5,1.9,5.4,9.6,10.2,12.8
1912,12.4,12.3,9.5,7.9,4.4,0.3,0.3,2.9,5,8.3,10.8,11.9
1913,12.6,12.5,10.1,8.1,4,0.8,1.1,3.7,6.2,8.1,10.7,11.6
1914,13.3,12,10.7,7.9,5,0.2,0.3,2.3,7.6,9.3,9.9,12.5
1915,14.1,12.3,11.2,8.2,3.4,0.2,0.1,3,6.2,7.6,9.8,11
1916,11.5,12,9.9,7.6,2.1,0.5,0.9,1.9,6.5,9.1,10.7,12.1
1917,12.2,11.4,10.5,6.9,3.1,0.4,-0.3,1.5,5.9,8.1,10.2,11.1
1918,11.1,12.2,10.5,6.6,2.3,-0.2,0.8,2.2,7.4,9.4,10.4,11.8
1919,12.4,12.2,10.4,8.9,3.1,1.2,1.3,2.7,5.5,8.8,9.5,11.6
1920,13.2,11.4,9.8,7.1,3.7,-0.9,1.3,3.4,6.6,8.4,11.3,11.3
1921,11.8,12.3,10.2,6.8,3.1,0.7,-0.7,2.2,5.6,8.7,9.8,11.2
1922,12.7,12,10.8,7.7,3,0.7,1.2,3.8,7.7,9.3,10.6,12.1
1923,12.6,12.2,11.3,7,2.9,0.2,0.7,3.6,6.9,10,11.8,11.5
1924,12.1,10.9,10.5,6.8,3.2,-0.2,-0.3,2.3,6,8.3,10.2,10.9
1925,11.9,12.8,11.2,7.8,3.2,-0.7,0.3,3.2,6.3,8.4,10.5,12.3
1926,13.8,13.9,10.7,7.2,3.6,1.3,-0.5,2.4,6.1,8.4,9.5,11.8
1927,12.8,12,10.5,7.8,2.8,0.4,1.3,2.8,7.2,8.9,11.1,11.6
1928,12.2,11,10.7,7.5,3.5,1.7,0.8,2.3,6.7,9.8,11.2,12.9
1929,12.3,11.9,9.5,7,4.3,1.5,0.4,2.7,7.6,9.2,10.9,11.7
1930,11.9,11.2,10.7,7.5,3.2,0.3,0.9,2.3,5.6,8.6,10.6,12.7
1931,12.1,12.8,10.9,7.1,5.2,0.8,0.9,3.6,6.5,8.8,10.6,12.3
1932,11.9,12.3,11.6,9.2,4.7,2,0.5,3.4,8.7,9.3,11.8,11.9
1933,12.4,12,10.8,7.5,4.6,1.2,1.3,3.1,6.5,9.1,10.1,11.3
1934,12.2,11.7,11.2,8.7,5.7,2.9,1.2,4.8,6.5,9,10.9,11.9
1935,12.5,10.3,9.6,7.2,4.2,0.8,1.2,1.3,7,9.2,10.9,11.1
1936,12.5,11.7,11.2,7.7,3.9,1.6,1.3,3.7,6.3,8,9.7,11.8
1937,12.4,12.4,11.2,7.3,4.6,1.2,0.5,3.2,6.1,8.7,11.4,11.1
1938,12.4,12,11,8.9,4.5,1.8,1.8,3.5,7.3,9.6,11,12.4
1939,12,12.9,10.7,7.3,5,1.3,1.1,3.1,5.1,9.7,10,11.2
1940,12.3,12.5,12.1,7.7,3.8,1.3,-0.4,4,8,7.8,10.5,10.9
1941,11.9,12,9.8,8.7,5.4,1.1,1.4,4,6.8,10.5,11.3,13
1942,13.5,13.4,12,8.2,4.1,1.6,1.2,4.5,7.3,8.6,10.7,11.5
1943,11.9,11.2,10.8,9,3.9,0.1,1.7,2.8,6.4,9.8,10.9,10.2
1944,13.5,11.9,10.5,7.3,2.1,1.5,1,4.9,6.9,9.8,11.5,12.2
1945,11.9,12.9,10.8,7.9,2.7,-0.7,0.3,3,8.1,9.1,11.9,12.1
1946,13,12.8,11.4,9,5.5,0.9,1.3,2.4,7.6,9.8,11.3,13
1947,12.6,13,10.7,9.2,4.1,2.2,-0.4,4.6,6.3,10.1,11.8,12
1948,12,11.5,12.1,7.4,5,0.4,1.8,3.7,6,10.3,10.4,12.3
1949,13.9,11.7,10.6,7.8,3.7,2.5,0.3,3.6,8.2,9.8,10.9,12.4
1950,12.5,12.6,13.2,9.3,3.9,2,2.5,4.1,8.3,7.8,10.4,13.1
1951,11.7,12,11.5,9.2,5.4,-0.7,-0.2,2.7,6.5,10.9,11.3,12.7
1952,13.4,12.7,11.2,8.3,4.1,2.3,2.4,3.9,6,9.8,10.5,12.3
1953,13.2,13.1,10.9,7.2,4.9,-0.4,-1.3,3.5,4.6,9.1,9.8,12.4
1954,12.3,12.4,11.2,7.9,4.7,-0.1,-0.8,2.8,7.4,10.3,10.8,12.6
1955,12.4,12.7,10.2,8.6,5.1,1.7,0.5,2.5,5.5,8.6,10,12.1
1956,11.7,13.1,12.4,8.7,5.3,1.8,2.1,4.7,5.5,9.7,11.1,11.5
1957,13.3,13.6,12,9.2,3.9,1.2,3.3,3.3,8.4,9.9,12.5,12.3
1958,14,13,11.5,9.1,5.9,0.8,2.1,3.9,7,9.3,12.8,12.4
1959,12.4,12.7,11.3,9,3.7,2.8,2.3,3.2,6.1,9.4,11.1,12.5
1960,12.1,12.9,11.5,7.1,3.1,0.6,-0.4,4.7,7.4,10.7,11.2,12.7
1961,11.9,12.5,12.3,8.6,5.5,4,3,2.7,8.5,8.9,11.7,11.9
1962,13,13.5,10.6,8,3.2,1,1,3.6,7.8,11.3,12.3,12.8
1963,13.1,12.3,10.4,7.4,3.3,2.3,2.2,3.1,8.2,10.4,12.8,13
1964,13.3,13.1,13.3,8.1,3.7,-0.2,-1.2,3.1,8,9.9,11.1,12.2
1965,13.1,13.2,11.5,8.1,4.3,-0.2,1.2,5,7,7.3,11.6,12.6
1966,14.5,13.1,11,6.8,4.7,2.7,1.7,4.2,7,9.8,11.9,13.3
1967,14.1,13.2,11.6,9.5,4.9,1.3,0.3,3.3,7,9.4,11.1,12.3
1968,13.2,11.8,11.3,7.3,5.3,-1,3.4,5.6,7.3,9.4,9.6,13.7
1969,13.8,13.9,12.3,9.6,4.8,2.3,2.6,3.4,7,9.9,11.3,12.8
1970,13.9,11.6,10.8,7.4,5.3,2.2,1.6,4.7,8.4,9.1,12,13
1971,13.7,12.2,12.4,9.5,4.8,1.9,1.1,3.5,8.3,9.1,10.4,12.2
1972,13,12.3,12.1,9.1,4.6,0.2,1.1,3.2,7.3,10.6,10.4,13.5
1973,13.7,12,13.7,8.3,5.2,1.1,1.2,3.3,7.5,9.5,10.9,12.3
1974,13.6,13.5,12.2,8.1,4.1,1.8,2,3.6,6.1,10.4,11.6,12.4
1975,12.8,13,10.6,7.8,5.4,1.3,0.8,3.7,9.3,9.2,11,12.1
1976,12.8,12.7,12.5,7.6,4,1.5,1.7,3,7.7,9.5,10.5,12.4
1977,13.7,13.9,11.3,9.2,3.8,1.1,0.9,4.1,7.9,10.7,11.5,13.2
1978,13.6,13.3,12.7,7.4,3.9,-1.5,1.7,7.1,7.3,9.2,11.6,11.5
1979,12,13.1,10.6,9.1,4.7,1.7,1.7,5.8,8.1,10.2,11.5,12.4
1980,12,12.7,11.3,6.8,3.7,0.2,-0.4,3.6,7.5,10.2,11.5,13.1
1981,14.1,13.3,11.3,7.9,4.9,1,1.7,3.9,6.1,6.7,12.3,11.9
1982,14.1,12.7,11.2,7.7,4.3,0.6,1.7,3.9,7.9,9.7,11,12.7
1983,14.3,12.7,11.7,10.8,7,3.7,3.2,3.9,8.3,9.5,12.2,12.7
1984,12.8,12.4,12.4,7.6,4.9,0.8,3.2,5.2,8.3,11.5,10.9,12.2
1985,14.1,13.5,11.9,7.3,4,1.6,0.9,4.4,8.6,10.3,11.4,12.9
1986,13.6,12.3,11.4,9.1,4.4,2.4,1.2,5.5,7.3,9.3,11.2,12.8
1987,13.9,14.7,12.6,10.4,5.7,1.6,1.1,4.8,8,9,12.7,14.4
1988,14.3,14.3,13.4,9.4,4.5,2,0.9,5,8,9.9,10.7,12.5
1989,13.4,13,11.7,7.6,6.8,3.5,2.5,5.1,6.9,8.9,11.4,12.6
1990,13.3,12.5,12,10,4.5,1.2,2.3,3.7,7.1,10.4,11.4,13.1
1991,14,13.6,12.7,7.2,4.8,3.6,1.7,4.9,9.1,11,11.7,12.5
1992,13.9,14.4,12.1,10.2,4.7,2.2,2,4.7,10.7,11.4,11.7,14.2
1993,13.7,14.3,12.3,9.5,6.6,2,3.2,4.6,8.8,12.2,11.8,13.7
1994,13.3,13.1,12.2,8.7,3.6,1,-0.9,3.8,7.3,8.1,11.5,12.1
1995,13.7,13.2,12.7,8.5,5.1,1.3,2.8,5,8.1,11.1,12.6,12.4
1996,14.6,14.5,11.4,8.5,6.5,1.7,1.9,4.8,7.5,10.9,11.9,13.5
1997,14.2,13.9,13.1,6.9,5,2.5,3,5,9.7,9.9,11.1,13
1998,13.9,14.1,13.4,9.1,3.3,1.2,3.3,4.1,9.5,11.1,12,13.1
1999,14.1,13.3,13.5,9.2,5.9,1.7,2.5,4.2,7.5,9.2,12.2,14
2000,13.7,14.6,13.6,8.3,4,3.1,1.3,3.8,7.5,10.5,11.9,13.1
2001,13.2,12.8,11.9,9.5,4.7,2,2.5,4.7,7.4,10.7,12.3,13.1
2002,13.5,12.8,12.3,8.3,4.7,2.3,1.3,5.8,7.7,9.6,10.2,13.5
2003,14.1,14.7,12,9.5,4.9,2.3,0.7,3.4,7.3,10,12.5,13.4
2004,11.5,14.1,12.2,9.6,5,1.7,1.4,5.4,6.9,10.1,13.3,14.2
2005,14.4,14,11.4,9.3,5.6,2.8,1.6,5.8,8.5,10.5,12.7,12.4
2006,14.9,15.1,11.6,9,3.9,1.1,2.4,4.9,7.2,11.1,12.4,14
2007,13.3,13.1,11.4,9.4,3.7,1.8,1.2,3.6,8.8,9.9,12.3,12.7
2008,13.6,13.1,12.1,6.8,6.2,2.2,2.3,4.8,7.3,10,12.9,13.7
2009,14,13.6,11.2,7.8,5.2,3.6,1.1,4,8,10.6,10.1,12.7
