1901,21.9,21.1,21.4,19.8,17.8,15.8,15.3,15,16.7,19.4,22.2,20.7
1902,22.1,21.3,20.7,20.7,18.4,15.8,16,15.4,18.8,19.9,21.6,21.3
1903,21.5,21.1,21.5,20.6,18.9,16.7,15.3,16.1,16.4,19.1,20.9,21
1904,20.7,20.9,21,19.8,18.4,15.6,14.8,16,16.4,20.3,22.1,21.4
1905,21.6,21.1,20.7,19.4,18.7,17.2,15.2,16.3,16.6,20.6,20.7,21.1
1906,22.4,21.4,21.8,20.5,18.3,15.8,15.3,15.5,17.1,19.3,20.7,21
1907,21.4,21.2,20.6,20.1,18.3,16,14.3,15.8,17.6,21,21.2,20.6
1908,21.6,21,21.5,20.3,17.5,16.5,15.3,16.5,18.2,21.1,21.8,20.9
1909,21.1,21.2,21,20.1,17.7,14.9,16.1,15.9,18.2,19,21.4,20.7
1910,21.5,21.3,21,20.4,17.7,15.1,15.1,16,17.7,20.2,19.8,20.4
1911,21.2,20.5,20.7,19,17.6,15.4,15.6,15.9,17.6,20.3,20.9,22.2
1912,22,20.9,21.9,20.6,18.8,16.1,15.4,16.4,18.8,20.4,22.2,21.3
1913,20.9,20.9,21.7,19.4,19,15.6,15,16.7,17.9,20.9,21,20.8
1914,21.1,21.7,21.3,20.5,18.4,16.5,15.2,16.4,18.1,20.1,20.6,22.1
1915,21.6,21.5,21.3,20.9,18.5,15.8,16.1,15.4,17.3,21,21.3,21.2
1916,21.6,21,21.4,20.4,17.9,15.7,14.2,16.1,17.5,20,20.1,20
1917,20.8,20.1,20.6,19.9,18.9,16.3,16,16,17.1,18.3,20.7,20.1
1918,21.6,20.7,20.9,19.5,17.8,16.1,15,15.4,17.5,20.5,21.1,21.4
1919,21.6,21.4,21.4,19.4,17,15.7,14.5,16.9,18.7,19.9,21.9,21.7
1920,21.4,21,21,19.3,18.3,14.9,14.4,16.1,18.8,21,20.8,20.7
1921,21.1,21.1,20.6,19.4,17.9,15.7,15.3,15.9,17.8,20.6,20.9,20.5
1922,20.7,20.9,21,18.7,17.8,15.3,14.4,16,17,19.6,21.2,21.6
1923,21.9,21.4,21.6,20.7,18.8,15.9,16,15.5,18.2,20.3,21.9,21.4
1924,21.5,21.2,21.8,19.9,18.6,16,15.9,16.4,17.9,19.8,21,20.9
1925,21.2,21.2,20.9,20.6,17.6,17.1,16.4,15.7,19.1,20.4,21,21.4
1926,22.1,21.9,22.3,21.4,18.9,17.2,16,16.7,18.8,20.6,22.2,21.6
1927,21.4,21.5,20.8,20.3,18.3,16,14.9,16.4,17.9,20.4,21.2,22
1928,21.1,21.6,21.6,21.1,19,15.8,15.4,16.2,17.8,20.5,21.5,21.2
1929,21.9,20.3,22,20.6,18.3,16.6,16.1,16.3,18,21.3,21.7,20.9
1930,20.8,21.6,21.1,20.2,17.2,15.5,15.1,15.3,19,19.7,21.6,21.5
1931,20.9,21.2,20.9,19.9,18.1,15.5,15.4,15.8,16.9,19.2,20.2,20.8
1932,21.5,20.9,21.2,19.5,17.1,15.7,15.3,15.9,17,19.3,21.4,21
1933,21.4,20.7,20.5,19.9,17.9,15.5,15.3,15.9,16.4,19.9,21.6,21
1934,21,20.9,21.3,20.2,18.3,14.6,15.2,14.9,16.6,19.4,20.9,20.4
1935,21.2,20.8,21.3,19.5,18.5,15.7,14,15.8,18.1,20.2,20.5,20.7
1936,21.1,22,21.5,20.1,18.5,15.4,15.1,15.3,17.2,20.7,21.3,20.9
1937,21,21.4,20.8,20.2,17.9,16.4,15.2,15.7,18.5,19.6,22.3,21.3
1938,21.5,21.3,21.4,20.5,18.5,15.5,15.8,16.3,17.6,19.9,20.3,21.6
1939,21.5,21.7,21,20.2,18.6,16,15.6,15.6,17.8,20.1,21.2,20.7
1940,20.7,20.9,20.9,19.9,17.6,15.6,15,15.3,16.9,18.6,20.3,21.1
1941,20.2,21.4,21.3,20.6,18.2,16.2,15.2,16.1,17.9,19.9,20.8,21.6
1942,21.5,21.9,21.8,20.3,17.8,15.8,15,16,17.5,18.4,20.6,21.1
1943,20.8,20.7,20.7,20.5,17.7,15.3,14.7,15.9,15.5,18.7,20.5,20.8
1944,21,21.4,20.8,19.7,18,16.8,15,15.9,17.5,19.1,21.3,21.1
1945,21.7,20.9,21.6,20.7,17.9,15.2,15,15.7,17.1,20.5,20.6,20.8
1946,21.1,21.6,20.7,20.2,18.1,15.7,15.6,15.9,16.4,19.7,20.4,21
1947,21.5,21.7,20.6,20.5,18.2,15.9,16.3,15.5,17.2,19.3,20.5,21.6
1948,21.5,21.5,21.3,21,19.4,16.3,15.8,16,17.3,19.5,20.9,20.7
1949,21.7,21.5,21.4,19.9,18.2,15.8,15.6,16.7,18,20.2,21.2,21.8
1950,21.6,20.7,20.7,20.1,17.1,15.5,14.8,15.9,16.4,19.2,20.8,21.1
1951,20.2,20.6,20.2,19.9,17.8,15.8,15.4,16.5,17,19.4,20.4,21.3
1952,20.8,21.6,21,20.2,18.3,15.8,15.5,16.1,16.9,18.8,19.6,20.9
1953,20.8,21,20.6,20.1,17.7,16.2,15.2,15.2,16.3,18.8,20.3,20.9
1954,20.1,21.3,20.4,19.9,18.2,15.4,15.2,15.7,17.1,19.1,19.8,20.9
1955,21.2,21.3,20.4,19.6,17.7,15.4,15.7,15.2,16.9,18.9,20.2,21
1956,20.3,20.7,21,19.8,17.8,15.7,15,15.7,16.8,18.8,19.7,20.7
1957,21.3,20.4,20.4,19.7,17.6,15.3,14.9,15.6,17.2,19.4,20.6,21
1958,20.9,21.1,20.8,20.4,17.3,15.4,15.1,16,17.2,18.8,20.2,20.3
1959,20.5,21.3,20.6,19.1,17.7,15.4,14.9,15.4,16.8,18.1,20,21.2
1960,20.8,21.3,20.1,19.6,17.7,16,15,15.4,16.6,18.5,19.6,20.4
1961,21.4,21.7,21,20.5,18.8,16.3,16.5,16.1,17.1,19.3,21,20.8
1962,21.2,21.3,20.9,20.2,17.1,15.1,14.9,15.6,16.7,18.5,19.8,20.8
1963,20.9,21,21.2,20.2,17.1,15.3,14.9,14.2,16.2,18.6,19.8,20.6
1964,21.2,21.7,20.6,20,17.4,15.4,14.1,14.9,16.4,18,19.8,20.6
1965,20.1,20.8,20.2,19.2,17.2,14.1,14.4,15.4,16.7,18.6,20.3,20.6
1966,21.7,21.1,20.9,20.4,18,16.4,15.9,15.8,17.6,18.7,20.1,21.1
1967,20.8,21.4,21,20.1,18.3,16.2,16.4,16.2,17.2,19.3,20.1,20.5
1968,20.6,20.9,20.7,19.2,17.2,14.6,14.8,15.3,16.7,18.6,20.1,20.7
1969,21.3,21.1,21.7,20.8,18.3,15.5,15.9,15.8,16.7,19.8,21,21.7
1970,20.9,22,21.3,19.6,17.8,15.8,15.5,15.9,16.9,19.1,20.1,20.6
1971,20.3,20.4,20.5,20,17.2,14.8,15,14.9,16.3,18.2,19,20.1
1972,20.3,19.7,19.7,19.4,18.1,14.3,15.4,15.4,16.6,18.8,19.7,21
1973,20.6,21,20.8,19.9,17.2,15.9,14.7,15.3,16.5,18.7,19.8,19.7
1974,20.3,19.9,19.9,19.5,17.4,14.9,15.2,14.7,15.8,17.6,19.6,20.2
1975,20.3,20.3,20.3,19.7,17.5,15.2,14.8,14.6,15.9,17.9,19.4,20.2
1976,19.5,20.5,20.2,19.5,17.6,15.5,15.1,15,16.2,18.4,20.1,20.7
1977,20.8,20.1,20.4,19.5,17.8,15.5,15.1,15.7,16.6,19.5,20.3,21.1
1978,21.3,21.1,20.4,19.6,17.3,15.7,15,15.6,16.8,19,19.9,20.3
1979,21.1,20.8,20.9,19.2,17.4,15,14.7,15.4,16.9,19,19.8,20.8
1980,20.9,21.7,20.6,19.8,17.4,14.9,15,15.3,16.6,18.8,20.4,20.7
1981,21.3,20.9,20.7,19.7,17.2,14.9,14.3,15.4,16.6,18.6,19.7,20.9
1982,20.4,21,20.5,19.5,17.4,16,15.8,15.8,16.5,18.7,20.2,20.8
1983,20.7,21.6,21.2,20.1,18.2,16.5,15.7,15.4,16.4,18.6,20.1,20.8
1984,20.4,20.4,20.7,19.4,17.7,15.3,14.6,14.9,16.3,18.7,20.4,20.6
1985,21.3,20.9,20.4,19.3,17.2,15.3,15.3,15.8,16.9,18,19.6,20.7
1986,20.9,21.1,20.9,20.4,17.5,14.6,14.3,15,16.4,18.5,20.1,21.1
1987,20.5,21.2,21.4,20.1,17.8,14.9,15.2,15.8,17.1,18.8,20.4,21.5
1988,20.9,21,21.5,20.6,17.7,16.4,15.7,15.6,16.4,19.2,19.9,21.3
1989,20.5,20.5,20.7,19.8,17.7,15.8,15.3,15.5,16.5,18.6,20.1,20.9
1990,21.1,21.5,21,20.2,18,16.1,14.3,15.9,17,19.1,19.4,20.4
1991,21.8,21,21.3,19.8,18.2,15.3,14.7,15.3,16.9,18.9,20.4,20.4
1992,20.9,20.6,21.5,20.2,18.2,15.5,14,15.4,16.5,18.7,20.8,22
1993,21.4,21,20.1,20.1,18,16.4,14.8,15.4,16.1,18.7,20.1,21.1
1994,21.1,22,21.1,21.1,18.1,16.2,14.5,16.6,17.7,18.7,20.5,21.4
1995,21,21.8,20.9,20.3,18.3,15.4,15.4,16.3,17.2,19,20.2,21
1996,20.9,21.1,21.1,20.2,18,15.8,14.9,15.1,17.5,18.2,20.6,21
1997,20.4,20.9,21.2,20.3,17.4,15.8,15.5,15.9,17.6,19,21.6,21.9
1998,21.7,22.1,22.5,20.3,17.8,16,15.2,16.1,16.8,18.3,20.2,20.8
1999,21.3,21.6,21.2,20.2,17.9,15.5,14.6,15.6,16.9,18.5,20,20.8
2000,21.1,21.2,21.2,20,18.1,15.9,15.2,16,17,19.2,20.4,20.8
2001,21,21.6,22,20.2,18.5,15.5,15.3,15.6,16.7,18.9,20.8,21.1
2002,20.8,21.4,21.5,19.9,17.7,15.8,15.5,16.6,16.8,19.6,21.1,21.2
2003,21,21,21.7,20,19,16.1,15.1,15.4,16.6,19.3,21,21.3
2004,21,21.5,21.2,19.9,17.6,14.7,15.5,15.7,17.4,19.3,19.8,20.9
2005,21.4,22.3,21.7,20.3,18.6,16.3,15,16.2,17.6,19.4,20.9,20.7
2006,21.2,21.6,21.3,19.9,18,15.9,15.5,16,16.8,19.3,21,21.7
2007,21.7,21.6,21.6,20.4,18.7,16.1,15.5,16,17.4,19.3,20.7,21.7
2008,21.3,21.4,20.7,19.5,17.8,15.3,15.4,15.8,16.7,19.4,20.4,21.4
2009,21.7,21.9,21.3,20,18.2,16.1,15.6,16,17.2,19.4,20.5,21.5
