1901,21.8,21.3,21.5,21.4,19.3,17.1,15.9,15.8,17.9,19.2,18.8,20.2
1902,22,21.9,21,19.3,17.3,16.6,15.6,15,16,17.8,18.9,21.7
1903,21.9,22.4,21.5,20.2,18.6,17.3,16.6,16,16.9,18.6,19.3,20.9
1904,21.2,21.3,21.1,20.1,17.4,16.2,15.8,15.7,16,17,18.8,19.9
1905,20.7,21.5,20.4,19.1,18,17,15.3,15.8,16.6,17.4,18.9,22
1906,21.9,20.8,20.9,20.1,18,16.5,15.7,15.9,17.2,18.1,20.1,21.2
1907,22.4,21.5,22.8,20.4,18.3,17.7,16.1,15.5,16.3,18.6,19.9,21.5
1908,21.2,21.5,21.4,20.1,18.8,17,15.7,16.1,17.2,17.1,19.4,20.2
1909,21.9,22.1,20.7,20.4,18.2,17.7,17.3,16.4,17.6,18.3,20.2,21.3
1910,22.4,22.9,23,21.1,19.1,18,17.2,16.4,17.5,19.4,20.4,21.6
1911,21.2,21.3,21.2,19.9,18.1,16.9,15.8,15.8,16.5,17.8,19.3,20.7
1912,21.3,21.4,21.2,20,18.2,17.2,15.8,15.8,16.5,17.9,19.2,20.5
1913,21.1,21.3,21.2,19.9,18,16.9,15.9,15.7,16.4,17.9,19.4,20.5
1914,21.3,21.4,21.2,20.2,18.3,17.1,15.6,15.7,16.4,17.7,19.2,20.5
1915,21.6,22.1,21.2,20,18.3,17.1,16.1,16,16.8,18.2,19.6,20.8
1916,21.4,21.7,21.4,20.2,18.2,17.2,16,15.8,16.7,18.1,19.5,20.8
1917,21.6,21.4,21.2,20,18.2,17,16,15.8,16.8,18.2,19.4,20.6
1918,21.4,21.4,21.2,19.9,18.1,17.1,15.7,15.7,16.5,18,19.4,20.5
1919,21.4,21.5,21.2,19.8,18.3,17,15.8,15.7,16.5,18,19.2,20.6
1920,21.5,21.5,21.2,19.8,17.9,16.8,16.1,16,16.6,18.1,19.7,20.7
1921,21.5,21.6,21.4,20,18.3,17.2,16.2,16.1,16.5,18.1,19.6,20.7
1922,21.6,21.4,21.1,19.7,17.9,16.8,15.8,16,16.7,17.8,19.4,20.8
1923,21.3,21.4,21.7,19.6,18,16.6,16,15.7,16.3,17.8,19.2,20.4
1924,21.3,21.3,21.3,20,18.4,17.2,16.3,16.1,16.4,17.7,19.4,20.4
1925,21.2,21.4,21.4,20.1,18,17,15.7,15.9,16.6,18.1,19.4,20.8
1926,21.2,21.9,21.6,19.9,18.2,17.2,15.9,16.1,16.6,17.8,19,20.1
1927,21.3,21.4,21.2,19.9,18.1,16.6,16,15.6,16.3,17.7,19.2,20.3
1928,21,21.2,21.2,20.4,18.2,16.9,16,15.9,16.3,17.8,19.1,20.3
1929,21.6,21.5,21.3,19.8,17.8,17,15.7,15.5,16.3,17.9,19.2,20.7
1930,21.4,21.6,21.5,20,18.5,17.5,16.3,16.1,16.3,17.5,19.3,20.1
1931,21.4,21.6,21.2,19.6,18.2,17.1,16,15.9,16.8,18.4,19.9,20.9
1932,21.8,21.7,21.3,20.5,18.3,16.5,16.2,16.1,16.6,17.7,19.6,21.2
1933,22.1,21.9,21.5,19.9,18.4,16.6,16.2,15,16.4,18.2,19.2,21
1934,21.2,20.5,20.9,19.6,18.3,17.4,16.3,15.7,16.9,18,19.3,20.8
1935,22,22.3,21.6,19.7,17.4,16.5,16.1,15.8,16.6,18.5,18.9,20.8
1936,21.3,21,21.4,20.3,18.5,16.7,15.6,15.7,15.8,17.6,18.8,20.8
1937,21.4,21.2,20.8,19.4,17.5,17.3,15.9,16.3,16.4,17.9,19.6,20.5
1938,21.7,21,21.5,19.6,18.2,17.1,16.4,15.9,16.4,18.4,19.6,21
1939,20.9,21.5,21.5,20.3,18.8,17.4,15.8,15.5,15.6,16.8,19.1,20.1
1940,21.1,21,21.2,19.6,18.3,16.9,14.9,15.3,15.8,17.6,18.6,20.8
1941,21.5,22.8,22,20.4,17.9,16.3,15.8,15.1,16.6,17.9,20,21.4
1942,22.1,22.7,22.7,21.3,18.7,17.9,16.8,16.3,16.6,19.1,19.8,21
1943,21.8,21.6,21.5,20.1,19,17.2,15.8,15.5,16.1,19.2,20.5,20.5
1944,22.2,21.8,21.5,20.2,18.5,16.9,16,16,16.8,17.7,19.7,20.8
1945,21.1,21.2,21.6,20.6,17.9,16.8,15.9,15.9,16,17.4,19.1,20.4
1946,22.5,22.5,21.8,21,18.3,17.1,15.5,15.9,17.2,18.3,19.7,21.7
1947,22.8,21.9,21.8,21.1,18.7,17.1,15.2,16.7,17.6,18.2,19.9,21.6
1948,21.9,21.1,21.6,20.4,18.5,17.1,16.1,16.1,16.9,18.6,20,20.4
1949,21.4,22.2,22.2,20.4,18.2,18.6,17.1,16,17.3,18.5,19.7,21.3
1950,22.1,22.3,21.4,20.3,18.8,18.5,16.7,17.1,16.6,18.5,19.3,20.9
1951,21.5,21.4,20.5,18.4,16.2,15.9,15.4,15.4,15.8,17.5,19.9,21.2
1952,21,21.3,21.7,19.8,18,16.7,15.4,15.8,16.3,18.7,20.1,20.9
1953,20.8,21.4,20.6,18.8,18.1,16.1,14.3,16.1,16.6,19.1,20.4,20.5
1954,21.7,21.2,20.6,19.4,18.3,17.1,16.3,14.8,16.4,17.2,19.2,19.6
1955,20.4,21.4,20.9,19.8,18.4,15.8,14.7,15.2,17.2,18.3,19.6,21.3
1956,21.1,21.7,21.1,19.9,18.3,16.6,15.2,15.2,16.5,18.3,18.5,20.9
1957,21.2,21.5,20,19.6,16.8,14.7,15,16.4,15.6,17.3,19.1,20.5
1958,20.9,22.1,21.6,20.4,17.8,18.4,15.5,16.2,17.3,17.2,18,20.4
1959,21.4,20.8,20.6,18.5,15.9,16,16.2,14.7,15.9,17.3,20.2,21.7
1960,20.6,20.9,20.6,19.1,18.4,16.5,15.6,15.8,17.2,17.9,18.8,19.7
1961,20.9,21.8,22.1,20.1,17.7,17.9,16.3,15.6,16.9,18.4,20.1,21.1
1962,21.5,21.5,20.6,19.6,20,16.7,16.7,15.8,16,17.8,18.2,19.9
1963,21.6,21.8,21.5,19.3,18.5,17.4,15.2,15.5,15.4,16.4,18.1,19.6
1964,21.3,22.1,21.6,20.6,18.4,17.4,16.1,16,15.8,18.2,19.8,19.2
1965,20.4,21.3,20.1,18.4,16.5,16.1,15.5,14.3,15.4,16.1,18.1,20.2
1966,20.1,21.4,20.7,19.2,16.8,16,15.2,14.9,15.6,17.3,18.7,19.4
1967,21.5,21.6,22.3,20.1,18,17.3,16.2,17,16.8,18.3,18.6,20.2
1968,20.7,21.1,21,18.8,18,16.1,14.9,15.6,15.7,17.5,18.9,21.1
1969,20.8,20.8,21.4,20.9,19.3,17.3,16,16.5,16.7,17.4,19.6,21.3
1970,22,21.4,22.3,20.5,18.1,17.8,15.9,17.8,17.8,19,19.5,21.2
1971,21.5,21.8,21.3,19,17.6,17.1,16.2,16.1,17.8,18.3,19.3,20.4
1972,21.2,21.2,21.8,20.1,18,16,15.5,14.8,16.3,17.8,19.8,20.2
1973,21.4,21.4,21.5,19.4,19.2,17.9,17.5,16.7,17.8,19.1,20.5,21
1974,21.6,21.7,21.2,20.1,18.2,17.1,15.8,15.3,16.6,17.6,19.4,19.7
1975,21.2,20.3,21.2,20.8,18.8,16.6,15.9,15.9,17.4,17.8,19.3,20.7
1976,22,20.8,21.3,20.3,18.6,17.1,15.7,15.6,15.5,17.4,19.3,20.3
1977,21.3,21.2,21.1,19.3,17.5,16.6,16.7,15.9,15.7,16.3,18.9,20.2
1978,21.2,20.7,21.2,20.1,17.7,17.2,16.1,15.5,16.2,16.7,18.7,20.2
1979,20.8,20.9,21.7,19.7,17.6,17.2,15.8,14.3,16,17.9,19.3,20.4
1980,22.4,22.6,21.6,18.9,18.6,16.3,15.6,15.4,16,17.7,19.1,20.3
1981,20.9,22.4,21.9,19.7,18.3,17.2,15.2,15.2,16.1,18.4,18.7,21.8
1982,21.9,21.5,21.6,20.3,18.3,16.5,15,15.7,15.7,17.4,20.1,20.7
1983,22.1,20.8,21.1,20.7,18.6,17.2,15.8,15.8,17.1,18.8,19.7,20.6
1984,20.9,21.5,21.2,20.6,18.5,17.6,16.2,16.1,16.9,18.3,20.1,21.3
1985,21.8,22.3,21.2,21,18.1,16.5,16.2,15.4,16.6,18.3,19.5,20.7
1986,22.3,21.7,21,20.2,18.1,16.5,15.8,15.9,15.9,18.4,19.5,20
1987,20.6,20.9,20.4,19.3,19,16.9,16.3,16.7,17.1,18.3,19.4,20.7
1988,22,22.4,20.9,21.1,19.6,19,16.5,17.3,18.5,19.6,21.1,21.4
1989,22.3,22.2,21.3,20.7,18.4,18.7,16.1,16.4,17.2,18.4,19.9,21.3
1990,22.1,21.8,22.7,20.8,19.2,18.1,16.7,16.7,16.5,17.9,19.6,21.1
1991,21.6,22.4,20.9,19.8,17.1,16.8,15.8,15.6,16.4,17.5,18.4,20.8
1992,21.7,21.9,21.6,20.2,18.1,17.4,16.1,15.9,16.7,17,18.8,20.2
1993,20.6,20.5,21.8,19.2,17.9,16.4,16.7,15.6,16.2,17.8,19.7,20.9
1994,22.6,21.4,21.9,20.2,17.6,16.4,14.9,16.2,15.3,17.4,19.1,19.7
1995,21.1,21.7,22.4,21.4,18.4,16.5,16.4,16.3,17,19.1,20.5,21.7
1996,21.8,22.4,22,21.6,18.6,16.9,16.1,15.7,17,18.2,19.4,21.6
1997,21.5,21.6,21.8,19.1,18.9,17.2,15.4,14.8,16.2,17,19.6,21.8
1998,22.1,22,22.2,21.6,19.9,18,17.2,17.7,18.2,18.9,20,21.5
1999,22.2,22.5,22.1,20.8,20,16.4,17.8,15.9,17.7,18.6,19,20.1
2000,21.3,21.8,21.4,20.3,20,16.8,15.3,15.8,16.9,18.5,19.9,20.3
2001,21.5,22,22.1,20,18.4,16.5,15.9,16.3,16.9,18.9,20.4,21.7
2002,22.7,22.2,21.7,20.5,18.4,18.3,15.7,16.3,16.6,18.5,18.8,21
2003,21.5,21.6,22.1,20.4,19.9,17.5,16,15.1,16.1,18,19.2,21.3
2004,21.8,22.5,22.2,20,18.4,16.9,15.8,14.8,16.6,18.4,19.2,20.7
2005,22.9,22.2,21,20.3,18.8,16.3,16.3,15.5,16.8,18.2,19.2,20.8
2006,21.8,21.7,22,21.1,18.4,16.7,15.1,15.6,16.4,17.5,19.7,20.3
2007,21.1,21.8,21.7,20,18.3,19,15.7,17.2,17.9,19.1,20.2,21.4
2008,22.3,22.4,22.1,21,17,16.6,16.7,16.7,17.4,18.4,19.9,21.4
2009,21.6,22.5,22,20.5,17.6,17,16,15.5,17,17.6,19,21.1
