1901,17.7,17.5,17.1,14.7,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1902,17.7,17.5,16.8,15,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1903,17.7,17.5,17.6,15.5,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1904,17.7,17.5,17.2,14.6,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1905,17.7,17.5,17.2,14.7,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1906,17.7,17.5,16.8,15.1,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1907,17.7,17.5,16.8,14.4,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1908,17.7,17.5,16.8,14.6,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1909,17.7,17.5,16.7,14.2,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1910,17.7,17.5,16.6,14.4,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1911,17.7,17.5,17.2,15.1,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1912,17.7,17.5,17,15.2,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1913,17.7,17.5,16.8,14.9,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1914,17.7,17.5,17.2,14.8,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1915,17.7,17.5,16.8,15,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1916,17.7,17.5,17.1,14.4,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1917,17.7,17.5,16.9,14.8,11.3,7.8,7.1,9.3,13.3,17,17.2,17.6
1918,17.4,17.3,16.9,14.2,10.9,7.9,7.3,8.9,13.1,16.9,16.9,17.4
1919,17.5,17.4,17,15.2,10.9,7.6,7.3,9.1,13.2,16.7,17.1,17.5
1920,18,17.5,17.1,14.5,11.3,7.8,7.1,9.1,13.3,16.7,17.2,17.9
1921,18,17.6,17.1,14.9,11.3,7.8,7.1,9.3,13.3,16.9,17.1,17.6
1922,18.2,17.8,17.3,15,11.6,8.3,7.2,9.5,13.2,16.3,17.2,17.9
1923,17.5,17.5,16.8,14.7,11.3,8.2,7.1,9.6,12.9,16.9,17.4,18
1924,18.2,17.7,16.9,14.6,11.3,8.1,6.9,9.1,13.1,16.8,17.1,17.5
1925,17.6,17.2,16.7,14.6,11,8,6.9,9,12.8,16.7,17.3,17.8
1926,18,17.6,17,15.1,11.2,7.7,6.8,8.8,13.2,16.8,17.2,17.6
1927,17.9,17.6,17,15,11.1,7.6,6.9,8.9,13,16.7,17.2,17.7
1928,17.9,17.9,17,14.9,11,8,6.8,9,13.5,17.2,17.4,17.9
1929,17.8,17.7,16.7,14.6,11.4,8,7,9,13.4,17.3,17.5,17.5
1930,17.8,17.8,17.1,14.5,10.8,7.6,6.9,9,13,17,17.6,17.8
1931,18.2,18.3,18.1,15.5,11.8,8,7.1,9.3,13.1,16.9,16.8,17.6
1932,18.1,17.8,17.1,15.4,11.4,7.6,6.4,8.9,13.1,17.2,17.5,17.7
1933,17.8,17.8,18,15.4,11.4,8,7.2,9.2,12.9,17.2,17,17.5
1934,17.7,17.5,17.3,15.2,11.7,8.4,7.4,9.5,13,16.8,17.1,17.6
1935,17.8,17.5,17.4,15,11.4,7.4,7.1,8.6,13.2,17.3,17.2,17.8
1936,17.7,17.8,16.8,14.3,11,7.8,7,9.2,12.8,17,17.2,17.6
1937,17.9,17.5,17.2,15.1,11.1,7.6,6.6,9,12.7,16.4,17.1,17.1
1938,17.8,17.6,17.2,15.8,11.6,7.9,7,9.3,13.1,17.1,16.7,17.4
1939,18.2,18,17.3,15.2,12.2,7.9,7.8,9.6,12.9,16.9,17,17.4
1940,18.3,17.9,17.6,15.4,11.4,8.3,7.4,9.8,14,16.8,17.8,18.5
1941,18,18.1,17.9,15.9,11.9,8.6,7.7,9.8,13.6,17.6,18,17.7
1942,18.4,18.4,18.1,15.6,11.7,8.8,7.3,10,14.2,17,17.9,17.7
1943,18.3,17.8,17.6,15.5,11.7,7.9,7.7,9.6,13.7,18.1,17.6,17.5
1944,17.9,17.7,17.5,15.6,11.1,8.4,7.7,9.8,13.6,17.4,17.5,18.2
1945,18,17.9,17.6,15.5,11.4,7.4,7.5,9.3,13.5,17.6,17.4,17.7
1946,17.9,18.2,17.8,15.3,11.6,7.8,6.8,8.6,13.2,17.3,17.3,17.6
1947,17.9,17.8,17.4,15.4,11.3,7.8,6.2,9.1,13.1,16.8,17.2,17.3
1948,17.5,17.3,16.7,14.8,11.7,7.8,7.2,9.1,12.8,17,16.9,17.9
1949,18.3,17.8,17.7,15.8,12.2,8.3,7.7,9.9,13.9,17.8,17.8,17.6
1950,17.8,17.8,17.8,15.7,11.4,8.1,7.9,9.3,13.6,16.9,17.7,17.5
1951,17.7,17.6,17.7,15.4,12,8,7.5,9.5,13.5,17.1,17.5,17.8
1952,17.9,17.7,18,15.8,11.5,8.5,7.8,10.1,13.7,17.4,17,18.1
1953,18.1,17.8,17.5,15.5,11.5,7.1,6.8,9.4,12.1,17.1,17.6,17.8
1954,18,18.1,17.6,15.2,11.5,7.2,6.5,8.9,13.5,17.5,17.4,17.6
1955,17.6,17.8,17.4,15.3,11.5,8.1,6.8,8.8,13,16.9,17.3,17.7
1956,17.7,17.6,17.5,15.2,11.2,7.5,7,9.1,12.8,17.1,17.2,17.7
1957,18,17.6,17.5,15.5,11.2,7.8,7.5,9.3,14.1,16.9,17.6,17.8
1958,18.2,17.9,17.7,15.5,11.5,7.5,6.8,8.2,13.7,16.8,17.5,17.9
1959,18,18,17.6,15.6,11.5,8,7.5,8.6,12.9,17.1,17.4,17.9
1960,18,17.9,17.2,15.4,11.1,8.4,6.4,9.7,13.4,16.9,17.4,17.9
1961,17.6,17.3,17.1,15.3,11.6,7.7,7.3,8.4,13.5,16.9,17,17.1
1962,17.6,17.5,17,15,10.4,7.4,6.9,9,13.1,17.1,17,17.2
1963,17.8,17.4,17.2,15,10.5,7.1,7,8.8,13.1,16.7,16.8,17.4
1964,17.6,17.5,17.1,14.7,11.1,6.7,6.1,9.2,13.1,16.5,16.4,17.1
1965,17.4,17.1,16.9,14.6,10.4,7.7,6.7,9.2,13.3,16.5,17,17.2
1966,17.6,17.6,16.9,14.7,10.9,8.3,6.8,9,13,17.1,17.2,17.5
1967,17.6,17.3,17.1,15,11.1,8.1,6.6,9,13,16.8,16.6,17.5
1968,17.2,17.3,16.9,14.6,11.3,6.5,6.7,9.4,13.4,17.1,16.8,17.1
1969,17.5,17.5,17.5,15.2,11.6,7.5,7.1,9.9,13.1,16.6,16.8,17.2
1970,17.6,17.9,16.2,15,11.1,7.9,7.2,9.5,13.5,16.7,16.8,17.7
1971,17.4,17.5,17,15.1,11.3,7.8,7.3,8.8,13.1,17.2,16.9,17.4
1972,17.7,17.5,17,15.2,11.3,7.4,7.2,8.9,13.3,17,16.9,17.7
1973,18,16.8,17.7,15.4,11.7,8,7.3,9.3,13.7,17.3,16.9,17.4
1974,17.7,17.6,17.2,15.1,11.2,7.5,6.8,9.5,12.8,17,17,17.6
1975,17.5,17.6,17.2,15.2,11.8,8.2,7.2,9.1,13.6,16.7,17.6,17.4
1976,17.7,17.4,17.3,15.2,11.2,7.8,6.8,8.5,13,16.9,17.2,17.7
1977,17.7,17.7,17.3,15.2,11.5,7.7,7.5,9.4,13.6,17.6,17.1,17.7
1978,17.9,17.7,17.5,15.2,11.2,8.2,7,9.8,13.7,16.6,17.1,17.4
1979,17.5,17.6,17.6,16,11.5,7.8,7,9.7,13.4,17.2,17.4,17.6
1980,17.7,17.9,17.9,15.8,11.6,7.4,6.9,9.3,13.4,16.9,17.1,17.6
1981,17.5,17.7,17.3,14.9,11,7.5,7.1,9.9,13,17,17.4,17.8
1982,17.6,17.8,17.3,15.1,11.3,8.5,7.4,9.7,13.7,16.9,17.1,17.9
1983,17.8,17.9,17.7,15.6,11,8.6,8,8.8,12.4,17.4,17.4,19.2
1984,17.6,17.3,17.2,15.3,12.1,8.4,7,9.6,13.9,17.4,17.3,17.5
1985,17.7,18.1,17.8,15.2,11.6,8,7.5,9.4,13.6,17.2,17.5,17.6
1986,17.6,17.5,17.3,15.4,11.6,8,6.8,9.7,13.5,16.7,17.2,17.7
1987,18,17.7,17.7,15.2,12.2,7.8,7.2,10,13.9,17.3,18,17.9
1988,18,17.9,17.3,15.7,11.4,8.3,7,9.7,13.5,17,17.3,17.6
1989,17.5,17.5,17.2,15.3,11.4,8.2,6.9,10,13.1,16.9,17.7,17.9
1990,17.7,17.3,16.3,15.5,12.1,8.9,7.5,9.5,13.7,17.3,18,17.5
1991,17.7,17.7,17.1,14.8,11.6,8.1,7,9.4,13.3,17.1,17.2,17.6
1992,17.7,17.9,17.4,15.3,11.6,8.4,7.4,9.1,13.8,17.3,17.3,17.7
1993,17.9,17.4,17.2,15.3,12,8.2,7.4,9.7,13.2,18,17.4,17.9
1994,17.9,18.1,17.9,14.3,11.9,7.9,7,9.6,13.8,17.5,18.2,17.9
1995,18.5,17.6,17.6,15.4,12.4,7.9,7.1,10.9,13.6,17.9,18.2,17.8
1996,18,17.8,16.2,15.6,11.7,7.7,7.1,10.2,14.1,17.9,18.2,18.1
1997,17.9,17.7,17.7,15.4,11.5,9.1,7.7,10,14.1,17.4,18.1,18.8
1998,18.1,18.1,17.5,16.1,12.1,8.7,7.8,10.1,14.1,18.1,17.8,17.4
1999,17.7,17.8,17.3,15.4,11.8,8.4,7.4,9.8,13.4,16.9,17.6,18
2000,17.9,17.8,17.3,14.3,11.9,8.8,7.4,9.5,13.9,17.9,17,17.6
2001,18.1,17.6,17.6,15.8,12.1,7.8,7.1,10.2,13.9,16.9,17.1,18.2
2002,17.7,17.6,17.2,15.7,11.8,8.5,8,10.2,13,17.1,18.2,18.2
2003,18.4,18.1,17.9,15.5,12,9.2,7.3,9.9,13.9,17.7,17.7,17.7
2004,17.8,17.7,17.7,15.8,11.3,7.8,7,9.3,13.6,17,17.3,18.4
2005,18.7,18,18.3,16.2,12.1,9.3,7.9,10.3,13.1,18.1,18,17.5
2006,17.5,17.5,17.2,15.1,11.3,7.9,7.2,9.3,13.2,17.3,17.2,17.5
2007,17.8,17.5,17.2,15.5,11.5,7.8,7.2,9.3,13.4,17,17.1,17.5
2008,17.8,17.4,17.2,15.1,11.4,8,7.3,9.5,13.2,16.6,17.2,17.8
2009,18.4,18,17.5,15.5,11.5,7.9,7.3,10.7,13.3,17.5,17.3,18.3
