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