1901,17.6,17.7,17.5,17,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1902,17.6,17.7,17.4,17.2,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1903,17.6,17.7,18,17.6,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1904,17.6,17.7,17.8,17.1,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1905,17.6,17.7,17.8,17.2,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1906,17.6,17.7,17.5,17.6,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1907,17.6,17.7,17.5,17,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1908,17.6,17.7,17.5,17.2,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1909,17.6,17.7,17.5,17,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1910,17.6,17.7,17.3,17,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1911,17.6,17.7,17.8,17.6,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1912,17.6,17.7,17.7,17.4,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1913,17.6,17.7,17.5,17.3,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1914,17.6,17.7,17.8,17.1,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1915,17.6,17.7,17.7,17.5,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1916,17.6,17.7,17.7,17,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1917,17.6,17.7,17.6,17.3,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
1918,17.5,17.6,17.7,16.9,15.7,13.6,13.4,15.4,16.5,17.3,17.3,17.7
1919,17.5,17.6,17.7,17.6,15.7,13.5,13.4,15.5,16.6,17.3,17.5,17.7
1920,17.8,17.7,17.7,17.1,15.9,13.6,13.3,15.5,16.6,17.3,17.5,17.9
1921,17.7,17.8,17.7,17.4,15.9,13.6,13.3,15.6,16.6,17.4,17.4,17.8
1922,17.9,17.8,17.9,17.5,16,13.8,13.4,15.7,16.5,17.1,17.5,18
1923,17.5,17.7,17.5,17.3,15.9,13.8,13.3,15.8,16.4,17.4,17.6,18
1924,17.8,17.8,17.6,17.2,15.9,13.7,13.2,15.5,16.5,17.3,17.4,17.7
1925,17.6,17.6,17.4,17.2,15.7,13.7,13.2,15.4,16.3,17.3,17.6,17.9
1926,17.8,17.8,17.6,17.6,15.9,13.6,13.1,15.4,16.5,17.3,17.5,17.8
1927,17.7,17.7,17.6,17.5,15.8,13.5,13.2,15.4,16.5,17.2,17.5,17.9
1928,17.7,17.9,17.6,17.5,15.7,13.7,13.1,15.4,16.7,17.5,17.6,17.9
1929,17.7,17.8,17.4,17.2,15.9,13.7,13.3,15.5,16.7,17.6,17.7,17.8
1930,17.6,17.9,17.8,17.1,15.7,13.5,13.2,15.5,16.4,17.4,17.7,17.9
1931,17.8,18,18.2,17.7,16.1,13.6,13.3,15.6,16.5,17.4,17.3,17.8
1932,17.8,17.9,17.7,17.6,15.9,13.5,13.1,15.4,16.6,17.5,17.7,17.8
1933,17.6,17.8,18.3,17.7,15.9,13.7,13.4,15.5,16.4,17.4,17.4,17.7
1934,17.7,17.9,17.5,17.3,16.3,13.8,13.5,15.9,16.2,17.3,17.6,17.9
1935,17.8,17.8,17.7,17,16.2,13.2,13.3,14.8,16.7,17.6,17.6,18.1
1936,17.7,18.2,17.4,16.9,15.7,13.4,13.1,15.2,15.9,17.5,17.6,17.9
1937,17.9,17.8,17.9,17.5,15.6,13.4,12.8,15,15.9,16.5,17.2,17.1
1938,17.7,17.8,17.6,17.6,16.2,13.6,13.2,15.6,16.5,17.6,17.1,17.6
1939,18,18,18,17.7,16.5,13.6,13.8,15.8,16.3,17.3,17.4,17.7
1940,18,18,18.3,18,16,14,13.5,16,17.2,17.2,17.9,18.4
1941,17.7,18.5,18.4,17.8,17,13.9,13.3,16,17.4,18.2,18,17.9
1942,18,18.3,18.2,17.2,16.6,14.1,12.7,16.2,18.1,17.1,17.9,17.6
1943,17.7,17.5,17.4,16.9,16.5,12.5,12.7,15.8,17.5,18,17.8,17.8
1944,17.6,17.5,17.6,17.3,15.6,14.5,13.6,16,17.4,17.6,17.6,18.1
1945,17.9,17.6,17.6,17.2,16.1,12.9,13.5,15.6,17.1,17.7,17.7,17.8
1946,18.1,18.1,17.5,17.2,16.4,13,12.6,15.1,16.8,17.7,17.5,17.7
1947,17.6,17.5,17.7,17.6,16.3,13.8,12.4,16.1,16.9,17.2,17.6,17.4
1948,17.2,17.3,17.2,17.5,16.6,13.4,12.7,15.8,16.5,17.2,17.3,18.2
1949,18.3,17.4,17.6,17.9,17.4,13.6,13.8,16.6,17.3,17.7,18,17.7
1950,17.3,17.4,17.8,17.4,16,13.6,13.7,15.5,16,16.4,17.7,17.4
1951,17.3,17.1,17.6,17.6,16.1,13.5,12.8,15.9,16.4,17.6,17.7,18
1952,18.4,17.8,18.2,17.9,15.3,14.3,13.3,15.8,16.6,17.4,17.4,18
1953,17.7,18,18.1,17.6,16.1,12.4,13.3,15.3,15.7,17.2,17.5,17.9
1954,17.7,17.6,18.2,17.3,16.1,12.2,12.2,15.7,16.5,17,17.4,17.4
1955,17.5,17.6,17.8,17.7,16.5,13.7,13.4,14.8,15.7,17.2,17.4,17.4
1956,17,17.5,17.9,17.6,15.7,13.2,13,15.4,16.2,17,17.7,17.4
1957,17.4,17.6,17.6,17.4,15.5,12.9,13.8,15.9,17.5,17.3,17.8,18.1
1958,18.1,18.1,18.3,18.4,15.7,13.6,13,14.9,17.4,17.6,18,18.1
1959,18.1,18.1,17.5,17.9,16,13.3,13.9,16,16.2,16.9,17.3,18.2
1960,17.8,17.5,17.6,17.3,15.9,14.5,13,16,16.7,17.4,17.7,18.5
1961,17.6,17.1,18,17.6,16.6,14,14.5,15.1,16.1,17.2,17,17.5
1962,17.3,17.5,17.9,17.5,14.9,13.5,13.8,15.8,16.2,16.9,17.2,17
1963,17.6,17.6,17.7,17.3,15,12.7,13,14.8,16.9,17.5,17.5,17.7
1964,18,18.1,18.1,16.7,15.6,12.6,11.6,15.2,16.2,16.5,17,17.1
1965,17.4,17.4,17.7,16.5,15.2,13.9,12.4,15.3,16.6,17.3,17.8,17.8
1966,17.6,17.9,17.4,17.3,16.3,14.3,13.1,15.9,16.4,17.2,17.2,17.5
1967,17.5,17.7,18,17.3,15.6,14.2,13,15.8,16.4,17,17.1,17.3
1968,17.6,17.3,17,16.9,14.9,11.7,12.4,14.8,16.9,16.7,17.6,17.7
1969,17.7,18.2,18.2,17.9,16.1,13.6,14.1,16.2,16.4,17.7,18,17.9
1970,17.3,18.6,17.3,17.6,16.1,13.5,13.8,15.8,16.4,17.5,17.4,17.5
1971,17.1,17.5,17.4,17.2,15.6,12.8,13.2,14.8,16.1,16.9,16.9,17.4
1972,17.1,17.1,17.4,17.3,16.5,12.6,13.3,14.9,16.8,17.7,17.1,17.8
1973,18,18.7,18.3,18.1,15.9,12.8,12.8,15.8,16.4,17.7,16.9,17.2
1974,17,17.3,17.6,17.1,15.4,12.4,13,16,16.2,17.1,17.6,17.9
1975,17.2,17.2,17.6,17.6,16.6,14.1,12.8,15.2,16.3,16.9,17.4,17.6
1976,17.2,17.2,17.4,17.5,15.9,13.3,13.1,14.8,17.1,17.8,17.3,17.7
1977,17.5,18.3,18.1,17.5,16.1,13.3,13.9,15.8,17.1,18,17.7,18.1
1978,17.9,18.3,18.2,18.2,16,13.9,13,16.1,17.4,17.9,17.8,18.4
1979,17.8,17.5,18.2,17.6,16,13.6,13.4,15.9,16.7,17.5,18.2,17.7
1980,17.6,18.2,17.9,17.8,16,13,13.2,16.1,17,17.4,18.1,17.8
1981,17.6,17.7,18,17.7,16.3,13.6,11.6,16.2,16.4,17.7,17.9,18.4
1982,17.6,18,17.8,18.1,16.1,14.9,13.1,15.8,17.8,17.3,17.6,17.9
1983,18.1,18.7,18.4,18.6,16.7,14.6,14.4,15.8,15.4,17.8,17.6,18.5
1984,17,17.5,17.6,17.5,15.8,14.9,13.2,15.8,17.1,17.9,17.5,17.7
1985,18.3,18.6,18.2,17.5,15.8,13.6,13.8,15.7,17.1,17.4,17.5,18.2
1986,17.5,17.9,17.6,17.8,16.6,14,13.8,15.5,16.5,17.9,17.7,18.1
1987,18.5,18.7,17.6,17.7,17.1,14.3,14.1,16.6,17.2,17.6,18,18.3
1988,18.2,18.3,18.4,18.3,16.5,14.6,13.6,15.9,16.7,17.5,17.9,18.6
1989,18.9,17.3,17.6,18.1,15.7,13.7,13.5,16.1,16.3,17.1,17.7,18.1
1990,18,17.5,17.5,18.4,17.3,14.8,13.4,15.8,16.6,17.7,18.1,17.6
1991,18,17.7,17.6,17.9,17.2,14.6,13.2,15.7,16.5,17.2,17.7,17.9
1992,17.8,18.8,18.9,18.4,17,13.9,13.9,15.3,18.1,17.4,16.5,18
1993,17.9,17.5,17.7,17.8,16.5,13.6,13.8,16.1,15.8,17.6,17.4,18.7
1994,17.8,17.6,18.7,18.5,16.5,14,13,16.5,17.3,17.6,18.3,18.4
1995,18.7,17.8,17.7,17.3,16,13.3,13.8,17.3,17.1,18.8,18.6,18.7
1996,17.9,17.2,17.7,16.9,15.8,13.5,13.8,16.7,17.3,18.5,18.7,18.9
1997,18.1,17.4,18.7,18.5,15.7,15.5,14.7,16.9,17.6,18.3,19.1,19.1
1998,18.4,18,17.7,18.8,16.9,14.6,15.4,16.1,17,18.1,18.9,17.8
1999,16.9,17.7,17.6,17.9,16.1,13.9,14.2,14.7,15.1,16.9,18.1,18.6
2000,18,17.5,17.5,16.5,17,14.5,14.1,15.8,16.6,17,16.7,17.6
2001,17.3,18.1,17.9,17.5,16.3,14.1,13.6,16,17.4,17.4,17.5,18.5
2002,17.9,17.9,17.8,18.6,17.1,14.5,15,16.5,16.6,17.4,18,17.8
2003,18,18.1,18.2,17.6,16.6,15,14.1,16.7,16.7,18.1,18.3,18.6
2004,18.2,18.8,18.5,18.7,16.1,13.6,12.3,15.6,16.8,17.4,17.8,18.1
2005,18.4,19,18.9,18.8,17,14.9,15.1,16.5,16.8,18.4,18.6,19.1
2006,17.5,17.7,17.7,17.9,15.4,13.6,14.5,15.8,16.4,17.7,17.5,17.5
2007,17.9,17.7,17.8,17.6,15.9,13.6,13.3,15.8,16.7,17.3,17.5,17.1
2008,18.2,17,17.8,17.6,15.9,13.6,13.3,15.6,16.6,17.4,17.5,17.8
2009,18.2,18.5,17.9,17.5,15.9,13.6,13.3,16.1,16.6,18,18.4,18.5
