1901,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1902,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1903,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1904,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1905,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1906,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1907,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1908,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1909,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1910,20.1,20.5,20.7,20.4,19.5,18.5,17.6,17.4,17.5,17.8,18.2,18.8
1911,20.1,20.5,20.6,20.4,19.5,18.7,17.7,17.5,17.6,17.9,18.3,18.9
1912,20.2,20.6,20.8,20.6,19.5,18.6,17.6,17.4,17.7,18,18.2,18.9
1913,20.2,20.5,20.7,20.5,19.6,18.6,17.7,17.5,17.7,18.1,18.4,18.9
1914,20.2,20.6,20.7,20.5,19.5,18.6,17.7,17.5,17.7,18,18.3,19
1915,20.2,20.7,20.8,20.6,19.7,18.7,17.7,17.5,17.7,18,18.3,18.9
1916,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1917,20.1,20.5,20.7,20.4,19.5,18.7,17.7,17.4,17.6,17.9,18.3,18.8
1918,20,20.5,20.7,20.5,19.6,18.7,17.8,17.5,17.7,18,18.3,18.9
1919,20.2,20.6,20.7,20.6,19.7,18.6,17.6,17.4,17.6,17.9,18.2,18.8
1920,20.1,20.5,20.7,20.4,19.5,18.5,17.5,17.4,17.6,17.9,18.2,18.7
1921,20.1,20.5,20.6,20.4,19.6,18.7,17.6,17.5,17.7,18,18.3,18.9
1922,20.1,20.5,20.7,20.5,19.6,18.7,17.7,17.5,17.7,18,18.3,18.9
1923,19.9,20.5,20.7,20.4,19.4,18.8,17.4,17.4,17.8,17.9,18.3,18.8
1924,20.4,20.5,20.8,20.6,19.7,18.6,17.6,17.5,17.5,17.8,18.1,18.8
1925,19.9,20.2,20.4,20.4,19.6,18.6,17.6,17.4,17.7,18.1,18.2,18.9
1926,20.2,20.6,20.9,20.7,19.7,18.9,17.7,17.5,17.7,18,18.4,18.8
1927,20,20.4,20.7,20.5,19.6,18.7,17.5,17.6,17.7,17.9,18.4,19
1928,20.1,20.6,20.6,20.6,19.6,18.7,17.6,17.5,17.7,18,18.3,18.8
1929,20.2,20.6,20.6,20.6,19.5,18.6,17.5,17.5,17.8,18,18.4,19
1930,19.9,20.5,20.7,20.6,19.5,18.6,17.7,17.3,17.6,18,18.5,19
1931,20.3,20.8,20.9,20.6,19.7,18.9,17.7,17.4,17.8,18.1,18.2,19
1932,20.3,20.6,20.6,20.8,19.6,18.7,17.6,17.6,17.6,18,18.3,19
1933,20.4,20.6,20.7,20.4,19.6,18.7,17.9,17.3,17.7,17.7,18.1,18.8
1934,19.9,20.3,20.3,20.4,19.3,18.8,17.5,17.5,17.8,17.8,18.2,18.9
1935,20,20.3,20.8,20.3,19.4,18.7,17.6,17.5,17.5,18,18.2,19
1936,20.1,20.6,20.9,20.5,19.6,18.6,17.5,17.2,17.7,17.9,18.5,18.8
1937,20.1,20.5,20.7,20.4,19.5,18.7,17.7,17.5,17.7,17.9,18.2,18.9
1938,20.1,20.5,20.6,20.5,19.5,18.7,17.7,17.5,17.6,18,18.2,18.9
1939,20,20.5,20.7,20.4,19.5,18.7,17.6,17.5,17.7,17.9,18.3,18.9
1940,20,20.4,20.4,20.5,19.5,18.6,17.7,17.5,17.6,18,18.2,18.8
1941,20.3,20.8,20.8,20.6,19.8,18.7,17.6,17.7,18,18.1,18.5,19.1
1942,20.1,20.6,20.7,20.4,19.4,18.4,17.4,17.3,17.7,17.8,18.1,18.8
1943,22,20.3,22.9,21.9,19.2,18.4,18.3,17.1,17.8,19.2,18.1,20.2
1944,21.5,21.7,21.5,21.6,20.5,19.4,19.9,18.9,19.4,18.9,19,19.7
1945,21.3,21.8,21.7,20.3,19.2,19.1,18,18.3,19.2,19.1,19.5,19.3
1946,19.9,21.1,21.4,21.4,20.1,19.3,18,18,18.3,18.6,19,19.1
1947,20.2,20.5,20.8,20.6,19.6,18.6,17.6,17.5,17.8,17.9,18.4,19
1948,20.2,20.5,20.6,20.5,20.5,19,17.8,17.9,18.3,18,18.5,18.7
1949,20.1,20.8,21.5,20.9,19.4,18.3,16.8,17,16.8,17.2,18.2,17.7
1950,18.8,19.2,19.1,18.9,18.7,16.8,16.2,16.3,17.6,17.6,18,18.7
1951,18.7,20.2,20,19.6,19.4,19.7,18.7,17.9,17.8,18.1,18.3,18.7
1952,19.6,20.1,20.4,19.9,19.8,18,16.9,16.8,16.9,17.4,17.3,18.3
1953,19.2,19.9,19.6,19.6,19.1,18.1,16.4,18.2,16.6,17,18.2,17.3
1954,20.1,19.9,20.3,20.4,18.6,17.9,17.1,16.9,17,17.3,18,18.5
1955,19,20.3,19.8,19.7,18.7,17.6,16.9,16.4,16.8,17.2,17.4,17.8
1956,19.2,20.3,20.1,19.9,18.6,17.8,17.1,17,17.1,17.1,17.1,18
1957,19.3,19.6,19.9,19.9,20.7,20,19.1,18.6,18.1,18.8,18.7,19.6
1958,19.1,20,20.1,20.1,19.4,18.5,17.4,17.1,17.1,17.4,17.4,18.2
1959,19.9,19.7,20,20.1,19,17.4,16.8,16.9,16.7,17.3,17.3,18.3
1960,19.1,19.6,19.3,19.5,18.4,16.8,16.8,16.3,16.7,16.5,17.5,18.5
1961,19.9,20.1,19.5,19.6,18.8,17.7,16.4,16.1,16.4,17.3,17.2,18.7
1962,20,20.3,19.9,19.8,19.1,17.7,17.1,17,17.2,17,18.1,18.9
1963,20.2,20,19.9,19.5,18.7,17.3,17.7,17.4,16.9,17.9,16.9,17.6
1964,19,19.9,19.7,19.7,18.4,18,17.7,17,16.8,16.9,18,18.3
1965,20.5,19.7,19.8,20.2,19.8,19.7,18.4,17.7,17.5,18.1,18,18.9
1966,20.1,18.2,20,20,19.3,18.1,17.4,17.7,17.6,18.1,18.3,18.7
1967,19.4,20.1,20.2,20.2,19.7,17.7,16.8,16.5,16.7,17.3,16.5,17.4
1968,19.4,20.2,19.9,19.7,17.5,17.1,17.4,16.9,17.8,17.1,17.4,18.1
1969,19.4,20.8,20.9,21.2,20.6,20,17.2,17.1,17.7,18.1,18.2,18.8
1970,20.6,21,20.8,20.3,19.1,18.5,16.9,17.3,17.4,17.9,17.8,18.8
1971,19.5,19.6,19.5,19.2,18,17.9,16.8,17,17.1,16.9,17.1,18.3
1972,19.7,19.8,19.8,20.6,20.5,19.6,19.4,19.3,18.1,18.8,18.5,20
1973,20,20.3,20.5,20,19.1,18.5,16.2,16.3,17.5,16.9,17.1,17
1974,19.3,19.6,19.8,19.9,19.3,18.7,16.8,16.9,16.8,16.9,17.7,18.1
1975,19,19.8,20.5,20.1,18.6,17.9,16.3,16.4,16.7,17.2,16.9,17.6
1976,18.7,19.5,20,20,19.6,19.5,18.5,17.7,16.7,17.6,18.1,18.9
1977,19.5,20,20.6,20,19.3,18.8,17.6,17,17.7,17.7,17.9,19.4
1978,19.7,20.4,20.4,19.7,19.5,18.2,17.3,16.5,16.8,17.7,18.4,19
1979,20.1,20.5,20.7,20.4,19.9,18.9,17.2,17.8,18.4,18,17.9,18.4
1980,20.7,20.7,20.5,20.6,19.7,18.8,18,16.9,17,18.2,17.8,18.4
1981,20.3,20.6,21.6,21.2,19.3,18.9,18.3,17.7,18.3,18.6,18.3,19.4
1982,21.6,22.1,22.3,21.4,20.9,19.7,19.5,18.7,19.5,20.5,20.9,20.7
1983,21.5,22.3,22.4,22,21.6,21.5,20.6,19.9,18.8,18.8,18.9,19.2
1984,20.3,20.8,20.9,20.7,19.3,19.1,17.7,18.2,18.2,18.9,18.7,19.6
1985,20,20.6,20.9,20.4,19,19.2,17.2,17.9,18.2,18.5,18.3,19
1986,20,21.3,21.6,20.7,19.4,18,17.7,18.1,18.3,18.7,19.2,19.6
1987,21,21.3,21.9,21.6,20.6,19.6,19,19,18.8,18.9,19.7,20
1988,21,21.8,21.4,21.4,20.6,18.7,18,17.7,19.1,18.6,19.1,19.5
1989,20.8,20.7,21.3,21,19.4,18.1,17.7,17.4,18.1,18.9,19.4,19.5
1990,21.3,21.8,21.6,21.3,20.5,20,18.6,18,18.3,18.8,19.4,20.2
1991,20.2,21.3,21.9,21.2,20.9,19.9,18.4,17.7,17.3,17.8,18.7,19.4
1992,20.5,20.6,21,21.1,20.7,19.1,17.9,17.3,17.1,17.7,17.9,18.8
1993,20.3,20.2,20.6,20.7,20.2,19.5,18.4,18.1,18,17.9,18.1,18.5
1994,19.3,20.6,20.6,20,19.7,18.9,17.6,17.3,17.8,18.6,18.4,19.2
1995,20.1,20.4,20.8,20.4,20.7,19.5,18.7,18.3,18.9,19,19,19.4
1996,19.9,21,21.3,20.6,19.9,18.4,17.6,18.2,17.6,17.3,18.8,19.4
1997,19.6,20.9,21.4,21.4,21.5,21.2,21.4,19.2,18.9,19.2,20.1,20.7
1998,21.8,22.4,22.2,22.2,21.8,21.2,19.9,18.6,18,18.4,19,19.3
1999,20.7,20.4,21.3,20.6,19.6,17.9,16.2,17.1,17.8,17.3,17.5,18
2000,19.1,19.4,19.7,19.7,18.4,17.1,16.4,16.6,16.6,17.6,17.1,18.1
2001,21.6,22,20,20.1,18.4,17,17.1,17.1,16.8,17.2,17.7,18.4
2002,19.6,20.6,21.1,21.3,20.3,18,17.3,17.1,17.3,18.3,19.5,19.5
2003,20.4,20.6,20.9,20,19,17.8,17.3,17.3,17.6,18.6,18.3,18.7
2004,20,21,21.3,20,18.4,17.2,16.9,16.7,17.2,18.8,17.9,19.9
2005,19.9,20.5,20.2,20.3,18.8,17.6,17.3,16.9,16.6,17,16.5,17.3
2006,19.8,19.6,20.6,19.5,18.8,19,18.1,17.5,17.7,18.3,18.4,18.8
2007,20.7,20.6,20.7,20.2,18.6,16.7,16.8,16,16.2,16.4,17.1,17.3
2008,19.7,20.1,20.5,19.7,18.4,17.9,17.9,17.5,17.8,17.8,17.8,18.2
2009,19.9,20.3,20.2,21.5,20.4,19.8,19.2,19,18.7,19.1,19.1,19.5
