1901,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1902,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1903,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1904,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1905,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1906,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1907,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1908,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1909,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1910,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1911,21,20.9,21.4,21.2,20,18.8,17.6,17.6,17.9,19.1,20.4,20.8
1912,20.8,21.1,21.3,21.1,19.9,18.5,17.5,17.4,17.7,19.2,20.6,20.8
1913,20.7,20.9,21.2,21.1,20.1,18.5,18,17.8,18.1,19.4,20.6,21.2
1914,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.3
1915,21,21.2,21.5,21.4,20.2,18.7,17.9,17.7,18,19.4,20.7,21.1
1916,20.9,21.3,21.3,21.1,20.2,18.7,17.9,17.8,18.1,19.4,20.7,21.2
1917,21,21.4,21.5,21.2,20.2,18.7,17.9,17.7,18,19.4,20.7,21.3
1918,20.9,21.4,21.5,21.2,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1919,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1920,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1921,21,21.2,21.5,21.3,20.2,18.8,18,17.8,18.3,19.5,21,21.6
1922,21.3,21.5,21.8,21.4,20.4,19.1,17.9,17.8,18.2,19.6,21,21.6
1923,21,20.9,21.5,21.1,20.2,18.6,18,17.5,17.8,19.1,20.3,20.9
1924,21.2,21.4,21.7,21.5,20.5,19.2,18.3,18.3,18.4,19.8,21,21.5
1925,21.1,21.1,21.5,21.3,20.4,19.2,18.5,18.3,18.3,19.3,20.6,21.1
1926,20.7,21.1,21.3,20.9,20.4,19.1,18.5,18.2,18.4,19.3,20.5,20.7
1927,20.8,20.8,21.4,20.6,19.5,18.3,17.8,18.1,18.1,19.7,20.7,21.1
1928,20.6,21,21.7,21.5,20.5,18.8,18.2,18,18.3,19.8,21,21.2
1929,20.7,21.3,21.6,21,20,18.4,17.8,17.3,17.7,19.4,20.6,20.9
1930,21.1,21.1,21.6,21.2,19.9,18.4,17.7,17.3,17.7,19,20.2,21.2
1931,21,21.3,21.5,21.3,20.5,19,18.2,18,18.3,19.6,20.6,21.3
1932,21,21.6,21.5,21.3,20.2,18.8,18,17.8,18.1,19.4,20.6,21.2
1933,21.1,21.5,21.7,21.5,20.5,19.2,18.4,18.1,18.3,19.6,20.3,21.2
1934,20.5,20.3,20.9,21.3,21.2,19,18.4,18.4,18.1,19.8,21.1,21.6
1935,21.5,21.6,21.9,21,20.7,18.5,17.4,17.1,18.4,20.3,20.8,21.3
1936,21.2,21.6,21.7,21.6,21.2,18.8,17.8,17.3,17.7,20,21.5,21.2
1937,21.5,21.9,21.6,22.3,20.9,19.1,18,17.9,18.8,20.1,21.8,21.2
1938,20.9,21.4,21.9,21.4,20.3,18.9,18.5,17.9,18.4,19.8,20.9,21.1
1939,20.6,21.4,21.7,21.6,21.3,18.8,18.5,18.5,18.6,19.7,21,21
1940,21.6,21.7,21.8,20.4,21,19.5,18.2,18,18.4,19.1,21.1,21.7
1941,21.2,21.3,21.8,21.8,21.4,19.1,18.1,18.4,18.8,19.8,21.2,21.8
1942,21.8,22.3,22.8,22.2,21.3,19.5,18,18.4,17.9,19.4,21,21.8
1943,21.1,21.5,22,22.2,21.3,18.9,18,18,17.9,19.3,20.9,21.4
1944,20.3,21.6,22.2,22.3,21.2,19.5,18.4,17.9,19,20,22.1,22.1
1945,21.9,21.8,22.3,22.6,21.6,18.3,17.9,18,17.7,20.2,21.1,22.1
1946,21.3,21.4,22,22.3,21.6,19.3,18.1,17.7,17.8,19.5,21.5,22.5
1947,22.5,22,22.5,22,20.4,18.8,18.4,17.5,18.3,19.3,20.8,21.2
1948,21.1,20.9,21.8,21.8,21.5,19.4,18.3,18.1,18.3,19.6,20.2,21
1949,20.9,20.5,21.2,21.7,21,19.3,18.7,18.7,18.7,20.1,21.1,21.3
1950,20.6,20.7,21.9,21.5,19.9,18.5,18,17.7,17.8,19.1,20.1,20.9
1951,21.2,21.5,21.6,20.9,20.1,19.2,18,17.8,18.9,19.9,21,21.6
1952,21.7,22,22.6,22,21,19.3,18.3,18,18.8,19.6,21.1,21.6
1953,21.9,21.6,21.9,21.9,20.7,19.3,18.2,18,18.2,19.6,20.9,21.7
1954,21.4,21.9,22.2,21.6,20.7,19,18.2,18.1,18.6,19.2,20.7,21.5
1955,21.5,21.1,21.7,21.2,20,18.7,18.2,17.7,18.3,19.2,20.6,21.7
1956,20.2,20.9,21.6,21.2,20.2,18.6,17.2,17.8,17.4,19,20.5,21.1
1957,21.3,20.8,21.6,21.9,20.9,18.9,18.1,18.2,18.5,20.3,20.6,21.6
1958,21.5,22,22.5,21.9,20.4,19.1,17.9,18.5,18.7,19.6,21.5,21.5
1959,21.6,22,22.5,21.4,19.9,18.9,18.1,17.9,18.3,20.1,21.3,22.1
1960,20.8,20.7,21.9,21.2,20.2,18.8,17.8,17.2,18.1,19.5,20,21.4
1961,21.5,22.1,21.8,21.6,21,19.5,18.9,18.5,19,20.3,21.1,21.9
1962,21.4,20.7,21.1,21.1,19.5,18.8,17.9,18.2,17.9,19,20.4,21.4
1963,20.7,21,22.2,20.9,20,18.4,18.1,17.3,17.5,19.5,21.8,21.1
1964,21.2,21.7,22.4,21.8,19.8,18.7,16.9,17.5,16.8,18.6,19.9,20.4
1965,20.7,21,21.6,21.2,19.8,17.9,17.5,17.5,18.7,20,21,21.4
1966,21.5,21.8,21.8,21.2,20.4,19.4,18.7,17.7,18.5,19.7,20.4,21.3
1967,21.4,21.3,22.1,21.3,20.5,19.1,18.7,18.1,18.3,19.5,21,20.6
1968,20.5,20.8,21.1,21.1,20.2,18.4,17.7,17.5,17.7,20,20.6,21.5
1969,20.9,21.2,21.7,21.9,20.3,18.7,18.5,18,18.4,19.7,21.1,21.5
1970,21.5,21.8,22,21.2,20.5,18.9,18.4,18.2,18,19,20.5,21.6
1971,20.8,20.5,20.6,21,19.8,18.2,17.8,17.1,17.4,18.5,19.7,20.8
1972,20.4,20.7,21.1,20.9,21.2,18.5,18,17.7,18.6,20.3,20.8,21.5
1973,21.2,21.9,22.2,21.8,20.6,18.9,17.3,17.6,17.5,18.6,20.9,20.7
1974,19.1,19.3,20.5,21.2,19.9,19.3,18.3,17.6,17.8,19.1,20.5,20.8
1975,20.8,20.9,21.9,20.9,20.5,18.9,18.1,17,17.7,18.5,19.5,21.8
1976,20.5,21.2,21.1,21.1,20.1,18.8,17.5,17.4,18,19.6,20.1,21.5
1977,21.2,21.7,21.1,21.9,19.9,17.6,17.8,17.8,18.1,19.7,20.5,20.9
1978,20.6,21.3,21.2,21.4,19.4,18.9,17.7,17.8,18.1,19.4,20.5,21.1
1979,21.3,21.5,21.1,21,20.4,18.4,17.7,18.2,18.2,18.7,21,21.9
1980,21.2,21.3,21.4,21.6,21,17.9,17.9,17.9,18.3,19.1,20.7,21.5
1981,21.1,21.5,21.6,20.4,19.7,18.3,17.1,17.7,17.7,19.2,20.1,21.3
1982,21.1,21.1,20.9,20.7,20.1,19,18.2,17.4,18.1,19.6,20.6,21.1
1983,21.6,21.7,21.9,22.1,20.8,20.2,18.5,18.1,18,19.5,20.1,21
1984,20.6,20.5,21.5,20.5,20.3,18.8,18,17.5,17.9,19.3,20.2,20.7
1985,20.9,21.7,20.8,20.9,20.2,18.3,17.8,17.6,18.2,19.2,21.3,21.3
1986,20.9,20.6,21.2,21.3,20.3,18.5,17,17.1,17.8,19.8,21,21.3
1987,21.8,21.2,22.1,22,21,19,17.6,18.8,18.8,20,21,21.7
1988,22.2,21.6,22.2,21.9,20.1,20.1,18.3,18.4,18.6,19.1,20.6,21
1989,20.8,20.2,21.1,20.3,19.4,18.3,17.6,17.6,18,19,20.1,20.8
1990,20.7,21.6,21.5,20.9,20,18.2,17.3,17.3,17.7,19,20.7,20.8
1991,21.2,22,22.4,21.1,20.7,19,18.7,17.7,17.9,20.1,20.7,21.5
1992,21.3,22.4,22.2,22.1,20.9,20.4,19,18.2,19.1,19.6,21,21.6
1993,21,20.8,21.6,21.7,21.2,19.1,17.5,17.6,17.9,19.2,21.2,21.3
1994,21.8,21.7,21.8,21.4,20.5,18.9,18.8,18.4,18.7,21.1,21.2,21.8
1995,21.8,21.6,21.8,21.6,20.8,19,18.7,18.4,18.6,20.4,20.7,21.6
1996,22.1,22,21.8,21.6,20.9,19.3,18,17.3,17.8,19.3,20.3,21.7
1997,22.2,21.7,22.1,21.6,20.5,20.2,18.7,18.1,18.6,20.3,21.4,21.7
1998,21.6,22.3,22.8,22.1,20.1,19.9,18.4,18.5,19.3,19.8,20.8,22.1
1999,22.3,21.4,22.1,21.5,20.4,19.5,18.5,18.3,18.7,19,20.9,21.5
2000,21.5,20.6,22.3,21.6,20.5,18.7,18.8,18,17.9,19.3,22.1,21.5
2001,21.5,21.4,22.6,21.1,20.6,19.1,18.2,18,18.6,20,21.1,21.7
2002,21.8,21.5,22.1,21.8,20.8,19.8,18.9,18.9,19.2,20.8,21.2,22.3
2003,22.1,21.9,22.5,22.4,22,20.7,18.6,18.5,18.6,20.9,21.1,21.4
2004,23.3,22.5,22.3,21.6,21.1,19,18.6,18.6,18.5,18.9,20.6,21.1
2005,21.2,22.2,22.2,21.6,20.6,19.6,18.1,17.7,18.5,19.5,21.2,22.2
2006,21.7,21.5,22.4,21.3,20.6,19.4,18.3,18.5,18.8,20.4,22,22.4
2007,22.5,22,22,21.5,20.8,19.6,18.5,18.1,19.3,19.8,20.9,22.3
2008,21.7,22.4,21.4,21.7,19.9,18.4,18.1,18.8,18.4,20.4,21.2,21.6
2009,21.5,22.1,22.2,22.2,20.6,20.2,18.7,19,19.1,20.6,21.8,23.3
