1901,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1902,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1903,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1904,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1905,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1906,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1907,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1908,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1909,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1910,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1911,20.6,20.5,20.7,20.5,19.4,17.6,16.7,16.7,17.1,18.3,19.7,20.5
1912,20.5,20.6,20.7,20.5,19.3,17.4,16.6,16.6,17,18.4,19.8,20.5
1913,20.4,20.5,20.6,20.5,19.4,17.4,16.9,16.8,17.2,18.5,19.8,20.7
1914,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.8
1915,20.6,20.7,20.8,20.7,19.5,17.5,16.8,16.7,17.2,18.5,19.8,20.6
1916,20.5,20.8,20.7,20.5,19.5,17.6,16.8,16.8,17.2,18.5,19.9,20.7
1917,20.6,20.8,20.8,20.5,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1918,20.5,20.8,20.8,20.5,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1919,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1920,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1921,20.6,20.7,20.8,20.6,19.5,17.6,16.9,16.8,17.3,18.6,20,20.9
1922,20.8,20.9,21,20.7,19.6,17.8,16.9,16.8,17.3,18.6,20,20.9
1923,20.6,20.4,20.8,20.4,19.5,17.4,16.9,16.5,16.9,18.2,19.5,20.5
1924,20.7,20.8,20.9,20.7,19.7,17.9,17,17.2,17.3,18.6,20,20.9
1925,20.7,20.7,20.8,20.6,19.6,17.8,17.2,17.1,17.3,18.5,19.8,20.7
1926,20.3,20.7,20.7,20.4,19.5,17.8,17.2,17,17.4,18.4,19.6,20.4
1927,20.4,20.4,20.7,20.1,19,17.2,16.6,16.9,17.1,18.7,19.7,20.6
1928,20.3,20.6,20.9,20.6,19.6,17.6,17,17,17.3,18.6,19.9,20.7
1929,20.3,20.7,20.8,20.3,19.3,17.3,16.8,16.4,16.9,18.5,19.8,20.5
1930,20.7,20.7,21,20.6,19.2,17.3,16.7,16.4,16.9,18.1,19.4,20.7
1931,20.6,20.7,20.8,20.6,19.7,17.7,17,16.9,17.3,18.6,19.8,20.8
1932,20.6,20.9,20.8,20.6,19.5,17.6,16.9,16.8,17.2,18.5,19.8,20.7
1933,20.9,21,21.1,20.7,19.8,18.1,17.2,17,17.3,18.7,19.6,20.8
1934,20.2,20,20.3,20.6,20.5,17.8,17.2,17.4,17.1,18.8,20.2,21.1
1935,21.2,21.1,21.2,20.2,20,17.3,16.5,16,17.5,19.4,20,20.9
1936,20.8,21.2,21.1,21,20.4,17.7,16.9,16.4,16.9,19.1,20.6,20.8
1937,21.1,21.5,20.9,21.6,20.1,17.8,17,16.9,17.9,19.1,21,20.8
1938,20.5,21,21.1,20.7,19.5,17.7,17.5,17,17.5,19,20.1,20.7
1939,20.3,21.1,20.9,20.8,20.6,17.6,17.3,17.4,17.6,18.7,20.1,20.6
1940,21.2,21.2,21.3,19.8,20.2,18.3,17,17,17.6,18.1,20.2,21.3
1941,20.9,21,21.3,21.2,20.6,17.8,17,17.3,17.9,18.8,20.4,21.5
1942,21.7,21.9,22.3,21.6,20.5,18.3,17,17.5,17.2,18.5,20.2,21.5
1943,20.9,21.1,21.3,21.5,20.5,17.6,16.8,16.9,16.9,18.2,20.1,21.1
1944,20.2,21.3,21.5,21.6,20.4,18.4,17.4,16.8,18,19.1,21.3,21.6
1945,21.5,21.6,21.6,21.8,20.8,17,16.8,17,16.7,19.3,20.2,21.8
1946,21,21,21.5,21.5,20.8,18,16.8,16.7,16.9,18.6,20.6,22.1
1947,22.2,21.6,21.8,21.4,19.6,17.5,17.2,16.4,17.4,18.4,20,20.7
1948,20.7,20.5,21.2,21.1,20.7,18.4,17.3,17.2,17.4,18.7,19.6,20.6
1949,20.5,20.1,20.5,21,20.1,18.1,17.6,17.8,17.8,19.1,20.3,20.8
1950,20.3,20.4,21.1,20.8,19.1,17.5,17,16.7,16.9,18.1,19.3,20.5
1951,20.9,21.5,20.9,20.4,19.4,18,16.9,16.8,18.1,19.2,20.3,21.4
1952,21.5,21.7,21.8,21.2,20.1,18,17.2,17,17.8,18.6,20.3,21.3
1953,21.7,21.2,21.1,21,19.8,18.1,17.1,17,17.3,18.8,20.1,21.3
1954,20.9,21.6,21.4,20.8,19.8,17.7,17.2,17.2,17.9,18.3,19.9,21.3
1955,21.2,20.9,20.9,20.4,19.2,17.6,17.1,16.7,17.3,18.3,19.9,21.2
1956,19.8,20.6,21,20.4,19.5,17.4,16,16.9,16.6,18.1,19.9,20.9
1957,21.1,20.7,21,21.3,20.2,17.4,17,17.1,17.7,19.4,20,21.6
1958,21.2,21.6,21.9,21.3,19.7,18.1,16.8,17.5,17.8,18.6,20.7,21.4
1959,21.4,21.9,22.1,20.8,19.2,18.1,17.1,17,17.4,19,20.4,21.5
1960,20.5,20.4,21.2,20.7,19.3,18,16.7,16.4,17.3,18.7,19.3,21.2
1961,20.2,20.4,20.1,20.8,20.5,18.3,18.2,17.5,18.4,19.8,20.6,21.8
1962,20.6,20.5,20.8,20.7,18.6,17.5,16.5,17.1,17,18.3,20.4,21.5
1963,20.6,20.7,21.1,19.5,19.3,17.5,17.4,16.6,17.3,19.2,20.7,21.4
1964,21.4,21.5,22.2,21.2,18.9,17.9,15.8,16.9,16,17.9,19.6,19.9
1965,20.6,20.5,20.9,20.2,18.9,16.8,16.5,16.8,17.5,19.3,20.6,20.9
1966,21.7,22,21.2,20.8,19.8,18.4,17.5,17,17.8,18.9,19.7,20.6
1967,20.6,21.3,21.6,21,20.2,18,17.5,17,17.4,18.3,20.2,20.5
1968,20.5,20.3,20.5,20.3,19.7,17.5,16.7,16.5,16.8,18.9,19.9,21.5
1969,20.4,20.9,20.9,21.2,19.5,17.5,16.7,17.1,17.6,18.7,19.9,20.8
1970,21,21.3,21.2,20.7,19.4,17.2,17,16.9,16.8,17.8,19.3,20.8
1971,20.4,20.1,20,20.2,19,16.6,16.8,15.6,16.4,17.4,18.8,20.3
1972,20,19.9,20.4,20.5,20.2,17.7,16.8,16.6,17.9,20.2,18.4,19.6
1973,20.8,21.5,21.5,20.7,19.5,17.1,16.1,16.2,16.5,17.6,20,20
1974,18.7,18.8,19.4,19.4,18.6,17.6,16.7,15.7,15.8,16.8,19.2,19.4
1975,20,19.7,20.5,19.7,19,17.2,16.1,15.2,16.1,16.8,17.7,20.6
1976,19.6,19.8,19.8,19.7,19.1,17,15.8,15.7,16.5,18.5,18.7,20.4
1977,20.5,20.9,20.2,21.1,19.1,15.9,16.5,16.8,17.5,18.6,19.8,20.9
1978,20.4,21.2,19.5,20.8,18.7,17.6,16.3,17.2,17.5,18.7,20,21.1
1979,21.4,21.4,20.4,20.9,20,17.8,17,18,17.5,17.6,20.3,22.7
1980,20.9,21.4,20.5,20.4,20,16.2,16.6,16.8,17.3,18.3,19.7,20.7
1981,20.7,21.5,20.7,19.7,18.9,16.7,16,16.2,16.3,17.8,19.6,21.3
1982,21.2,21.2,20.5,20.5,19.7,18.5,17.8,16.9,18,18.8,19.9,20.5
1983,21,20.9,21.3,21.1,20,19.2,17.3,17,17,18.5,19.2,19.6
1984,20,20,20.5,19.1,19.6,18,17.4,16.8,16.8,18.1,19.8,20.5
1985,20.7,20.9,21,20.4,19.2,17.4,16.8,16.9,17.3,18.2,19.9,21.1
1986,21,20,20.5,20.6,20.1,17.3,16.1,16.4,17.1,18.8,20.3,21
1987,21.4,21.1,21.7,21.8,20.4,18,16.8,18.2,17.9,19.3,20.2,21.6
1988,21.4,21.5,21.8,21.1,19,18.9,17.5,17.3,17.7,18.3,20,21
1989,20.4,19.4,20.8,20.3,19.4,17.5,17.1,17.3,17.6,19,21.2,20.8
1990,21,22.1,21.7,21.4,19.9,17.4,16.4,16.8,17.3,18.7,20.7,21.2
1991,20.8,21.6,21.9,20.4,20.2,17.7,17.7,16.9,17,19,20,20.9
1992,21.2,21.9,21.6,21.5,20.2,19.3,18,17.2,18.2,18.6,20.3,21.3
1993,20.7,20.2,21,21,20.4,18,16.4,16.7,17.1,18.5,20.5,21
1994,21.2,21.2,21,20.6,19.7,17.7,17.6,17.2,18,19.9,20.7,21.3
1995,21.6,21.1,21.2,20.9,20.2,17.8,17.6,17.6,17.8,19.3,19.6,21.3
1996,21.8,21.6,21.3,20.8,20.3,18.1,17,16.1,17,18.4,19.5,21.5
1997,22,21.3,21.6,21.1,19.9,19.3,17.7,17,17.8,19.7,21.1,21.8
1998,21.1,22.3,22.2,21.4,19.3,18.7,17.4,17.8,18.5,18.7,20.4,21.8
1999,22,21.1,21.4,20.8,19.7,18.5,17.4,17.5,17.9,18.1,20.2,21.1
2000,21.3,20.1,21.7,20.9,20,17.6,17.5,17.2,17.1,18.5,21.2,21.1
2001,20.9,21,21.8,20.5,19.9,18.1,17.2,17.3,17.7,19.2,20.5,21.3
2002,21.4,21,21.4,20.9,20.1,18.5,18.1,18,18.4,20,20.4,22.1
2003,21.8,21.5,21.8,21.6,21.3,19.7,17.4,17.4,17.7,20.1,20.4,20.9
2004,22.7,22.4,21.7,20.8,20.4,17.7,17.6,17.7,17.7,18.1,19.8,20.5
2005,20.9,21.8,21.5,20.8,20,18.4,17,16.7,17.6,18.6,20.5,21.7
2006,21.4,21,21.6,20.5,20.2,18.2,17.4,17.6,17.9,19.6,21.5,22.1
2007,22.3,22,21.9,21,20.2,18.3,17.5,17.1,18.6,18.9,20.2,21.9
2008,21.6,22.3,20.8,21.4,19.2,17.2,16.9,17.7,17.4,19.5,20.7,21.1
2009,21.2,22.1,21.4,21.4,19.8,18.9,17.5,17.9,18.3,19.9,21,22.8
