1901,22.4,21.6,21.8,20.6,19.2,17.8,17.2,16.8,18.2,19.9,22.5,21
1902,22.6,21.7,21.2,21.5,19.8,17.8,17.7,17.1,20.2,20.5,21.8,21.6
1903,21.9,21.5,21.9,21.3,20.2,18.7,17.1,17.7,17.7,19.5,21.2,21.3
1904,21.3,21.4,21.5,20.6,19.9,17.6,16.7,17.7,17.9,20.8,22.3,21.8
1905,22.1,21.6,21.3,20.2,20.1,19,17.1,18,18,21,20.9,21.3
1906,22.8,21.9,22.3,21.3,19.6,17.8,17.1,17.3,18.5,19.8,21.1,21.3
1907,21.9,21.6,21.1,20.9,19.6,18,16.2,17.6,19.1,21.5,21.5,20.9
1908,22.1,21.4,22,21.1,19,18.5,17.2,18.2,19.6,21.5,22,21.2
1909,21.6,21.6,21.5,20.9,19.1,16.9,17.9,17.6,19.6,19.5,21.7,21
1910,22,21.7,21.5,21.2,19.2,17.2,16.9,17.7,19.1,20.7,20.1,20.8
1911,21.7,21,21.2,19.9,19,17.5,17.4,17.6,19.1,20.8,21.2,22.4
1912,22.5,21.3,22.4,21.3,20.2,18.1,17.2,18.1,20.1,20.8,22.4,21.6
1913,21.4,21.3,22.2,20.2,20.4,17.6,16.8,18.4,19.3,21.3,21.3,21.1
1914,21.5,22.1,21.7,21.2,19.7,18.5,17,18.1,19.5,20.5,20.8,22.3
1915,22.1,21.9,21.8,21.7,19.9,17.8,17.8,17.1,18.7,21.4,21.5,21.5
1916,22,21.4,21.9,21.2,19.3,17.7,16,17.8,18.8,20.4,20.4,20.3
1917,21.3,20.5,21,20.7,20.2,18.2,17.7,17.7,18.5,18.8,21,20.4
1918,22.1,21.2,21.4,20.4,19.2,18.1,16.8,17.3,18.9,20.8,21.4,21.6
1919,22,21.8,21.8,20.2,18.5,17.7,16.4,18.6,20.1,20.4,22.2,22
1920,21.8,21.4,21.4,20.1,19.6,16.9,16.2,17.8,20.1,21.4,21,20.9
1921,21.5,21.4,21,20.2,19.3,17.6,17.1,17.7,19.2,21,21.2,20.8
1922,21.1,21.3,21.5,19.4,19.2,17.2,16.3,17.6,18.3,20,21.5,21.8
1923,22.4,21.8,22.1,21.4,20.1,17.9,17.8,17.2,19.6,20.7,22,21.6
1924,22,21.6,22.3,20.7,20,18,17.7,18.1,19.3,20.3,21.3,21.2
1925,21.7,21.6,21.4,21.3,19,19,18.2,17.4,20.5,20.9,21.3,21.7
1926,22.7,22.2,22.8,22.2,20.3,19.2,17.8,18.4,20.2,21.1,22.4,21.9
1927,21.9,21.9,21.4,21.1,19.7,18.1,16.7,18.2,19.3,20.8,21.5,22.2
1928,21.4,22,22.1,21.9,20.4,17.7,17.2,17.9,19.2,21,21.8,21.5
1929,22.4,20.7,22.5,21.5,19.7,18.6,17.9,18,19.3,21.7,21.9,21.2
1930,21.3,22.1,21.5,21,18.7,17.5,16.9,17,20.3,20.3,21.9,21.7
1931,21.3,21.4,21.3,20.6,19.2,17.4,17.1,17.2,18.1,19.4,20.3,21
1932,22,21.3,21.8,20.3,18.5,17.6,17.2,17.7,18.3,19.8,21.8,21.2
1933,21.9,21.1,21,20.8,19.3,17.5,17.1,17.6,17.8,20.4,21.9,21.3
1934,21.5,21.4,21.9,20.9,19.6,16.6,17,16.5,18.1,19.9,21.1,20.8
1935,21.7,21.3,21.9,20.5,20,17.9,15.9,17.9,19.6,20.6,20.8,21.2
1936,21.6,22.4,22,21,19.8,17.4,16.9,17.2,18.8,21.2,21.5,21.2
1937,21.6,21.7,21.3,20.9,19.2,18.4,17,17.4,19.9,20,22.5,21.7
1938,22.1,21.7,22,21.3,20,17.4,17.7,18.1,19,20.2,20.5,21.9
1939,22.1,22,21.6,21,19.9,18.1,17.5,17.3,19.3,20.5,21.5,21
1940,21.3,21.4,21.3,20.6,19,17.5,16.9,17.1,18.1,19.2,20.4,21.1
1941,20.6,21.8,22,21.3,19.5,18.1,16.9,17.7,19.3,20.1,20.8,21.7
1942,21.9,22.3,22.3,21.2,19.3,17.5,16.5,17.5,18.8,18.9,20.9,21.4
1943,21.4,21.1,21.2,21.2,19.4,17.3,16.2,17.3,17.1,18.8,20.4,21
1944,21.2,21.8,21.4,20.5,19.6,18.8,16.6,17.4,19,19.5,21.7,21.6
1945,22.3,21.3,22.1,21.7,19.4,17.3,17,17.5,18.8,21.1,21.2,21.1
1946,21.5,22.1,21.3,21,19.7,17.7,17.4,17.9,17.6,20.3,20.9,21.3
1947,22,22.1,21.2,21.2,19.7,17.9,18.1,17.2,18.6,19.7,20.7,21.8
1948,21.8,21.9,21.7,21.7,20.7,18.3,17.3,17.6,18.7,19.9,21,20.8
1949,22,21.7,21.5,20.6,19.5,17.8,17.1,18,19,20.4,21.2,21.7
1950,22.1,21.1,21.4,20.9,18.7,17.6,16.6,17.5,17.8,19.8,21.2,21.5
1951,20.5,20.5,20.3,20.6,19.2,17.4,17.2,17.2,17.9,19.4,20.1,21
1952,21,21.1,21,20.6,19.2,17.3,16.7,16.9,17.9,18.5,19.6,20.9
1953,21.2,21.2,21.1,20.9,19.4,18.1,16.9,16.8,17.9,18.8,20.3,21
1954,20.9,21.4,20.8,20.3,19.3,17.2,17,17,18.2,18.7,19.9,20.8
1955,21.6,21.2,20.7,20.2,18.8,16.9,16.8,16.7,17.7,18.6,20.2,20.7
1956,20.5,20.7,20.9,20.3,18.6,17,16.1,16.9,18.1,18.8,19.8,21
1957,21.2,20.3,20.3,20.2,18.3,16.7,16.3,16.9,18.3,19.5,20.4,21.2
1958,21.4,21.8,21,21.1,18.2,16.9,16.4,17.1,18.5,19,20.1,20.9
1959,21.2,21.5,20.5,20,18.4,16.9,16.3,16.5,17.3,18.8,20.2,21.2
1960,20.8,21.4,20.6,20.2,18.8,17.5,16.1,16.7,17.9,18.7,19.8,21
1961,21.5,22,21.6,21.5,20.1,18.3,17.9,17.5,18.4,19.9,21,21.2
1962,21.8,21.7,21.4,20.7,18.8,17.1,16.9,17.5,18.6,19.5,20.7,21.5
1963,21.8,21.2,21.3,21.1,18.5,17.7,17.1,16.6,17.6,18.9,20.3,20.8
1964,21.2,21.9,21.5,20.6,18.5,17.2,16.4,16.6,17.7,18.6,19.7,20.6
1965,20.9,21.1,20.3,20.3,18.6,16.7,16.8,17.2,18.4,19.3,20.6,20.7
1966,21.7,21.8,21.2,21.1,19.7,18.1,17.6,17.4,18.6,18.9,20.1,21.2
1967,21.4,21.9,21.7,21.1,19.5,18,17.8,17.7,18.5,19.5,20.6,20.7
1968,20.9,21.4,20.9,20.3,18.5,17.5,17.2,17.2,17.9,19.2,20.4,20.8
1969,21.6,21.7,22.3,21.9,19.4,17.9,17.8,17.5,18.3,20.3,21.3,22
1970,21.7,22.4,21.5,20.3,19,17.5,17.5,17.6,18.3,19.1,20.2,20.6
1971,21.1,21.5,21.1,20.4,18.5,16.7,16.9,16.3,17.3,18.3,19.5,20.7
1972,20.9,20.6,20.3,20.5,19.4,17,17.5,17.5,18.1,19.2,20.4,21.1
1973,21.2,21.3,21.2,20.2,19.2,17.5,17,17,17.8,19.1,19.4,20.9
1974,20.7,20.5,20.3,20.5,18.8,16.9,16.6,16.6,17.3,18.7,19.6,21
1975,21,21.4,20.6,20.7,19,17,16.9,16.4,17,18.1,19.8,20.2
1976,20.2,20.9,20.5,20.5,19.1,17.8,17.1,17.2,17.7,19.2,20.5,21.2
1977,21.4,20.9,21.2,20.4,19.9,17.9,17.2,17.6,18.3,20,20.4,21.5
1978,21.6,21.4,20.7,20.7,19.2,17.5,16.6,17.1,18.3,19.5,20.1,20.9
1979,21.1,21.1,21.1,20.3,18.8,17,16.8,17.3,18.4,19.5,20.6,21.3
1980,21.2,21.3,21.4,20.8,18.7,17.2,16.8,16.9,17.9,19.4,20.4,21
1981,21.8,21.7,21.9,20.7,18.8,17.3,16.5,17.3,17.8,19.7,20.3,21.2
1982,21.5,21.2,21,20.5,18.9,17.9,17.3,17.2,18.6,19.3,20.7,21
1983,21,22.2,21.5,20.7,19.2,17.9,17.2,17,17.8,19.2,20.1,20.8
1984,21.2,21.2,20.6,20.2,18.2,16.9,16,16.1,17.3,18.9,20.4,20.3
1985,21.7,20.9,21.1,20.2,18.5,16.9,16.8,17.5,18,18.7,19.5,21
1986,21,21.6,20.9,20.6,19,16.3,16.2,16.9,17.6,19.2,20.4,21.1
1987,21.4,21.4,21.7,20.6,19.2,17.2,17.5,17.7,18.3,19.8,20.4,21.3
1988,22,21.7,21.6,20.7,18.8,17.9,17.1,16.9,18,19.5,20,20.9
1989,21.1,21,21.7,20.1,19.1,17.5,16.9,17.3,18.2,19,20.1,21.1
1990,21,21.3,21.4,20.2,19.2,17.5,16.1,17.2,18.4,19.6,19.3,20.7
1991,21.5,21.5,21.3,20.4,18.7,17.6,16.6,17.2,18.7,19.7,20.8,20.7
1992,21.8,21.1,21.8,20.8,19.3,17.7,16,17.2,18.2,19.7,21,22
1993,22.1,21.4,20.7,21,19.6,17.8,16.8,17.3,17.6,19.2,20.2,21.3
1994,21.6,22.4,21.5,21.8,19.9,18.2,16.5,18.4,19.2,19.9,20.5,21.2
1995,21.8,21.8,21.7,20.7,18.8,17.8,17.4,17.5,18.6,19.1,19.9,21.4
1996,21.5,21.3,21.6,20.7,19.1,17.5,16.5,16.7,18.9,18.5,20.5,21.6
1997,21.2,21.1,21.8,21.1,19.7,18.1,17.1,17.5,18.4,19.1,21.8,21.8
1998,22.1,22.7,22.3,21,19.9,18.2,17.8,17.4,18.3,19.2,20.8,21.1
1999,21.4,21.9,21.7,20.6,19.6,17.5,16.9,17.1,18.3,18.8,20.2,21.3
2000,22,21.1,21.2,20.6,19.7,18,16.8,17.2,18,19.2,20.5,21.4
2001,21.7,21.8,21.8,21.1,19.6,17.5,17.1,17.3,18.2,19.1,20.8,21.3
2002,21,21.9,21.6,20.8,19.2,17.3,17.8,17.5,18,19.4,21.2,21.4
2003,21.5,21.6,22,21.2,20.6,17.6,16.9,17.1,18.2,19.9,20.9,20.6
2004,20.6,22.2,21.8,20.8,18.7,16.9,17.5,17.7,18.7,19.8,20.2,20.9
2005,22.2,22.9,22.3,21.6,19.6,18,17,17.8,19,19.7,21,21
2006,21.7,22,21.9,20.8,19.5,17.9,17.4,17.6,18.4,19.7,21.2,21.8
2007,22.2,22.2,21.9,21,20.1,18.1,17.4,17.9,18.7,19.7,21,21.7
2008,21.8,21.8,21.2,20.5,19.2,17.4,17.3,17.7,18.5,20.1,21.1,21.8
2009,22.5,22.4,21.9,21.1,19.7,18.5,17.5,17.7,18.7,19.9,21.1,21.9
