1901,0.7,4,7.1,10.6,13.5,16.9,17.7,17.5,15.8,12,5.8,1.8
1902,1.6,3.8,7.6,9,13.6,15.4,17.2,16.7,15.5,10.6,5.7,1.4
1903,0.4,3.7,6.8,10.4,12.9,15.9,17.6,16.5,16.2,12.6,6.7,2.2
1904,0.7,4,6.9,9.3,12.8,16.5,17.2,16.9,15.8,12,5.6,1.3
1905,0.4,2.2,5.6,8.7,13.5,16.9,17.4,16,16.5,11.8,6.3,1.8
1906,1.3,3.4,6.2,9,13.2,16.4,17.8,15.8,16.6,11.9,6.6,1.9
1907,1.8,3.7,5.7,9.1,13.2,15.8,16.5,17.5,15,11.9,6.6,2.2
1908,1.2,4.5,7.8,11.5,13.3,16.9,17,17.1,15.5,11.3,5.8,1.4
1909,0.7,4.1,8.4,9.8,12.5,15.9,17.5,16.8,16.7,12.9,7.7,2.7
1910,1.3,4.1,7,10.4,14,15.5,16.3,16.8,16.2,11.5,6.6,2.3
1911,2.3,3.5,6.5,10.4,13.1,16.3,16.7,16.8,15.8,11.4,6,1.4
1912,1.3,4.1,6.5,9,13.6,16.3,16.6,16.7,15.6,11.2,6.5,2.2
1913,1.2,4,6.3,9.1,11.8,16.1,17.2,17.1,15.5,11.6,5.4,1.5
1914,1.1,3.7,7.1,9.4,13.3,17,17.7,16,15.5,10.1,6.1,2.6
1915,2.4,4.7,7.4,10.8,13.1,15.5,16.5,16.2,15.3,13.9,8,3
1916,1.8,4.3,7.8,10.2,13,16.9,16.2,17.3,16.5,12.1,7.6,2.5
1917,0.7,3.6,6.8,9.3,13.8,16.5,17.2,17.6,16.1,12.6,7.5,2.4
1918,1,4.1,7.5,10.6,15.4,15.5,17.1,17.3,15.9,12.5,6.3,1.9
1919,1.8,4.1,8.7,10.3,13.5,16.5,17.4,18.6,14.8,11.3,7.8,3.2
1920,2.9,4,6.7,9.5,12.7,16.1,18,16.7,16.1,12.3,6.4,3.7
1921,2.2,3.9,7.7,10,13.5,15.6,17.2,17.2,15.5,10.7,6.9,2.7
1922,1.6,4.3,8,11,14.1,16.1,17.1,17,16.4,11.5,7.4,2.7
1923,1.7,4.4,8.4,11.2,12.7,16.4,17,18.1,15.3,11.4,7.6,3.1
1924,1.8,4.8,8.8,11,12.6,17,16.9,16.5,15.2,13.4,7.6,3.5
1925,1.1,4.2,7.2,10.8,11.3,16.8,17,16.7,14.1,11.8,6.6,1.6
1926,2.1,5.1,7.1,9.8,13.5,16.1,16.8,17.3,16.6,12.2,6.6,3.3
1927,2,3.7,5.5,9.4,13.5,15.8,17.5,16.9,14.8,12.2,7.1,2.2
1928,1.7,5.6,8.3,11.8,13.3,16.6,17.6,16.9,15.6,10.6,5.5,2
1929,1.2,3.9,8.3,10.8,12.4,15.7,17.4,17.1,15.6,11.2,6.7,1.4
1930,1.1,4.4,7.4,9.9,14.5,15.5,18.2,17.2,15.3,10.6,6.6,1.9
1931,1.6,4.2,7.6,10.1,13,16.1,17.2,18,15.4,13.6,6.6,2.9
1932,2.1,3.4,7.6,11.3,12.1,16.3,17.8,17.4,16,12.4,7.6,3.1
1933,1.1,4.4,8.1,10.2,13,16.8,17.8,17.6,16.7,12.8,6.3,2.9
1934,1.6,5.1,7.6,10.2,12.5,15,17.9,17.7,16.6,11.7,6.3,2.2
1935,0.8,4.6,8,10.4,13.2,15.3,17.9,16.9,15.9,12.3,7.7,1.7
1936,0.8,4.3,8.4,11,14.4,16.4,17.9,18.1,16.3,12.5,7.5,3.6
1937,1.1,5.3,7.6,11.7,14.3,17.6,18.3,18.7,17,13.3,6.6,3.6
1938,2.2,4.2,7.9,11.1,15.2,17,17.2,18.2,16.8,13.2,5.1,2.6
1939,2.5,4.9,7.9,10.6,13.7,16.4,17.8,18.1,16,11.8,6.2,2.7
1940,1.2,4.3,6.2,10.5,13.7,17,18.2,18,15.6,11.8,6,3
1941,1.6,4.8,8.3,11.2,13.7,16.9,18.1,17.6,15.2,11.8,5.7,2.7
1942,2,5.6,8.3,11.1,12.6,16.4,17.9,17.3,15.7,12.4,6.3,1.4
1943,2.3,4,7.3,10,12.6,16.9,17.4,17.2,15.5,11,5.9,2.5
1944,2.5,4.1,8.2,10.5,13.4,16.2,17.8,17.2,15.4,12.6,6.2,2.8
1945,1.9,3.5,7.5,12.2,13.8,17.4,17.6,17.5,17,12.5,6.1,1.6
1946,1.4,6.7,8.1,11.5,14.2,16.2,17.1,18.3,15.7,12.9,7,3.1
1947,1.4,4.9,8.1,10.7,13.6,16.9,19.6,18.2,16.9,11.9,6.5,2.9
1948,1.3,4.4,8,11.5,13.1,16.7,17.6,17.4,16.9,12.3,8.3,2.2
1949,2.4,5.1,7.1,9.5,13.6,16.1,17.4,17.3,16,12.8,6.1,0.7
1950,1.9,3.8,7.1,10.1,13.3,16,17.5,16.9,15.7,12,6.5,2.9
1951,1.5,3.5,7.8,9.2,12.1,16.4,17.1,18.1,14.5,12,6,2
1952,0.7,5,6.4,10.8,13.8,16.7,18.2,17,15.3,11.8,6.6,1.8
1953,2,4.4,7.8,10,13.7,16.4,17.4,17.8,15.5,10.7,6,3.3
1954,-0.2,5.5,7.2,10.7,13.6,15.9,17,16.6,15.3,11.6,5.5,2.8
1955,1.8,3.6,6.6,10.8,14.4,16.3,17.8,16.2,16.7,12.5,5.9,-0.3
1956,0.8,3.6,7,11.4,14.1,17.5,16.1,17.1,15.5,11.5,6.4,3.3
1957,2.3,4.3,7.2,10.5,12.4,15.8,17.7,17.2,16.5,11,6.6,2.8
1958,2.7,3.7,7.9,11.3,12.3,17.1,17.3,16.8,16.3,12.6,5.9,3
1959,2.5,3.7,7,11.3,12.9,16.5,18.3,17.7,14.7,12.3,7,3
1960,0.1,5.3,7.8,11.7,14.4,16.9,17.2,17.5,16,12.6,6.6,2.9
1961,3.5,5.1,7.4,10.9,13.9,16.8,17.4,18.7,15.8,13.6,5.7,0.6
1962,0.9,3.5,5.9,10.2,13.9,16.7,18,17.3,16.1,11.3,6.7,2.3
1963,-0.6,3.5,7,10.6,13.3,16.1,18.1,17.8,16.3,11.3,4.6,1.1
1964,1.9,3.8,6.1,10.4,12.9,15.9,17.2,17,16.1,13,7.2,1.5
1965,-0.3,3.2,5.5,10.2,13.9,16.6,16.7,16.9,15.5,10.9,4,2.8
1966,0.9,4,8.4,10.2,14.6,15,17.8,17.4,15.2,10.2,8.8,3.5
1967,2.6,3.5,6.5,10,13.1,15.9,17.2,17.4,15.2,10,5.3,1.8
1968,0.6,3.1,7.4,9.1,12.8,16.2,17.4,17.2,16.7,10.7,5.9,1.5
1969,1.5,4.7,7.6,10.5,14.2,17.2,18.1,17.1,15.9,10.8,6.6,2.5
1970,0.6,3.2,7.5,9.7,13.5,16.4,18.1,17.1,15.2,10.5,6.6,2.1
1971,1.3,2.5,7.1,10.7,13.3,17,17.1,16.5,16.2,11.8,4.5,-0.2
1972,1.8,4.8,7.5,9.8,13.7,16.5,18.5,16.7,15.8,11.6,5.3,2.9
1973,3,5.2,7.5,11,14.7,16.4,16.7,17.4,15.9,12.8,6,3
1974,0.4,5.1,7,10.4,13.9,17,17.2,17.4,15.7,15.1,7.5,3.4
1975,2.1,4.3,8,10.5,13.6,17.7,17.6,16.9,16.1,13.6,7.5,1.4
1976,1.4,5.2,7.7,10.7,13.6,15.8,15.9,16.8,15.4,10.8,8.2,3.4
1977,1.4,4.3,8.6,10.6,12.5,15,18.5,17.1,15.8,10.7,5.9,2.2
1978,0.4,3.5,7.1,9.3,13.7,16.1,16.4,17.3,15.6,12.4,7.4,1
1979,1.2,3.4,7.6,10.9,14.5,17,17.5,18,15.3,10.8,8,3.3
1980,0.6,4,7.4,10.6,13.6,17.1,18.2,18.4,16.9,11.4,5.8,2.8
1981,1.5,4.9,7,10.3,13.3,17.4,18.2,19,16.1,13,6.5,1.1
1982,1.2,3.5,7.3,10.1,13,17,18.3,17.6,16,10.8,5.7,2.7
1983,-0.7,2.3,6.9,9.6,13.2,16.6,18,17.3,16.2,13,5.9,1.7
1984,1.9,6.5,8.3,11.1,13.1,17.1,18,16.9,15.2,13,4.2,3.7
1985,1.7,4.1,8.7,10.8,13.6,16.7,16.9,17.9,16,12,6.4,3.1
1986,2.1,4.2,7.4,10.1,13.3,17.5,17,17,15.6,10.1,5.9,2.5
1987,0.7,4.6,7.2,10,12.6,17.6,18.3,17.5,16.2,12.2,6.4,2
1988,2.1,5.4,8.1,10.3,13.1,16.2,18.1,18.2,15.8,12.1,5.9,3
1989,1.7,4.2,8.8,10.5,14.4,17,17.2,17.6,17,12.3,6,0.4
1990,2.4,4.8,6.1,9.4,13.6,16.3,17.5,17.1,15.5,11.6,5.8,2.8
1991,1.7,5.1,8.1,10.5,12.8,16.2,17.7,17.6,15.3,12.7,5.4,1.5
1992,-0.1,2,7.8,9.9,12.7,16,16.7,17.7,15.3,11.5,4.3,-0.3
1993,1.6,4.1,6.7,10.1,12.7,16.3,17.3,18.6,15.8,11.9,6.5,2.7
1994,2.9,3.8,7.6,10.9,14.2,16.5,16.8,18,16.9,11.5,5.9,1.5
1995,0.9,3.8,8,10.1,14.3,17.3,17.4,17.6,16.4,12.2,7.5,2
1996,2.4,4.7,8.4,11.4,13,16.8,17.7,17.9,17.2,12.4,8.1,2.6
1997,1.1,3.5,7.6,9.3,13.3,16.8,17.5,18,15.5,11.7,7.6,3.8
1998,2.6,4.3,7,10.7,14.7,17.3,18.6,18.8,15.3,14.9,7.7,2.9
1999,1.6,5.7,9.7,12.3,14.9,17.9,17.7,18.7,16.4,13.4,8,2.8
2000,1.8,4.8,6.7,10.4,13.7,17.7,18.5,18.5,16.2,12.9,7.8,2.2
2001,1.1,5.6,8,11,13.3,16.9,18.5,18.5,16.7,12.7,7.7,4.3
2002,2.4,5.6,8.3,11.4,13.3,17.7,19,17.9,16.3,12.3,7.8,4.3
2003,1.5,5.1,7.1,11.3,13.8,16.9,18.1,19.3,16.9,13.3,7.7,4.7
2004,3.4,3.7,8.9,11.2,14.1,17.2,17.7,19,16.7,12,7,3.4
2005,3.8,6.7,8.7,11.2,13.3,17.3,18.5,18.6,17,13.4,5.9,3.6
2006,2.9,5.3,8.8,10.3,13.9,17.2,18.8,18.6,16.7,12.8,7.8,3.7
2007,3.4,4.6,8.3,11.3,15,16.3,18.1,18.7,15.8,14.4,8.1,3.9
2008,3.9,4,7.4,11.1,15.1,17,18,17.9,16.8,12.7,7.4,4.8
2009,3.8,6,8.9,11.6,15.1,18.1,18.5,17.7,16.9,13.1,7.7,4.6
