1901,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1902,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1903,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1904,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1905,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1906,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1907,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1908,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1909,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1910,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1911,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1912,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1913,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1914,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1915,21.4,21.6,21.6,21.4,21.9,21.6,22,22.1,21.6,21.5,21.1,21.4
1916,21.6,21.6,21.5,21.9,21.7,21.4,21.6,21.2,21.5,20.7,20.6,20.8
1917,21,20.9,21.4,21.4,21.2,20.8,21.4,21.2,21.2,20.7,20.6,21
1918,21.3,21.4,20.8,21.1,20.5,20.6,21.3,21.6,21.3,21,20.6,21
1919,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1920,21.4,21.6,21.6,21.4,21.2,21.1,21.3,21.3,21.2,20.7,20.7,21
1921,21.5,21.4,20.9,21,20.7,20.8,21.3,21,21.1,20.2,20.5,20.8
1922,21.3,21.3,21.2,21.3,20.9,20.6,21,21.2,21.1,20.4,20.3,20.7
1923,20.9,21.5,21.5,21.1,20.6,21.3,20.4,21.1,21.4,20.4,20.8,20.6
1924,22.2,21.5,22,21.7,21.5,20.8,21,21.2,20.4,20.2,20.2,20.7
1925,20.6,20.6,20.7,21.1,21.2,20.7,21.1,21,21.3,21,20.4,21
1926,21.7,21.9,22.2,22.2,21.6,21.6,21.4,21.3,21.1,20.7,20.9,20.6
1927,21,21.3,21.5,21.3,21.1,21,20.7,21.5,21.3,20.4,21,21.4
1928,21.4,21.9,21.3,21.6,21.1,21,21.1,21.2,21.2,20.6,20.7,20.7
1929,21.7,21.8,21.3,21.6,21,20.8,20.6,21.4,21.4,20.7,20.9,21.3
1930,21.2,21.5,22,21.6,20.9,20.9,21.2,21,21.2,20.5,21.2,21.4
1931,21.9,22.1,22.3,22.2,21.5,21.4,21,21.3,21.2,21,20.8,21
1932,21.5,21.7,21.3,22.2,20.9,20.9,21,21.3,21,20.3,20.8,20.9
1933,21.7,21.5,21.4,21.2,21.3,20.8,21.6,21,21.5,20.2,20.1,20.2
1934,20.8,20.9,20.8,21.3,20.6,21.1,20.7,21.5,21.6,20.2,20.4,21.1
1935,21.2,20.8,21.8,21.2,20.9,21.2,21.3,21.3,20.9,20.6,20.6,21.3
1936,21.5,22.2,22.2,22,21.5,21,21,21,21.5,20.6,21.3,21.1
1937,21.4,21.6,22,21.8,21.2,21.1,21.3,21.4,21.2,20.8,20.9,21.4
1938,21.4,21.6,21.1,21.1,20.9,20.9,21.2,20.9,21.2,20.7,20.6,20.9
1939,21.3,21.2,21.4,21.3,21.3,20.9,21.3,21.5,21.4,20.7,20.8,21.5
1940,19.4,20.4,20.2,21.8,21.6,21.2,21.7,21.7,21.5,20.9,20.7,19.2
1941,22.7,23,22.8,22.1,21.9,21.6,21.6,22,22.1,21.6,21.6,21.9
1942,21.9,22.2,21.8,21.7,21.1,20.9,21,21.2,21.6,20.4,20.8,20.8
1943,21.6,21,21.2,21.8,20.9,20.7,22.1,21,21.8,21.5,20.9,22
1944,22.3,22.1,22.5,23,21,20.7,22.2,21.7,21.7,21.5,21.5,21.6
1945,22.4,22.7,22.9,21.1,20.4,21.9,21.8,21.7,22,20.8,21.1,21.4
1946,21.3,22,22.1,22,21.5,22.5,22.2,22.2,22.3,21.3,21,21.4
1947,21.7,21.9,22.2,21.7,21.2,21.2,21,21.3,21.4,20.5,20.9,21.5
1948,21.8,21.9,21.8,21.3,21.6,21.2,21.1,22.2,22.3,20.5,21.4,21.6
1949,20.6,21.5,22,21.7,21.3,20.7,20.5,20.8,21,20.9,21,20.4
1950,20.7,20.8,20.6,21,20.5,20.2,20.4,21.1,22.5,20.6,21.2,21.5
1951,20.9,20.9,21.5,22,22.4,22,20.8,21.5,22.2,21.7,21.4,21.4
1952,21.9,22,22,21.6,21.5,21.2,21.3,22,21.9,21,21.1,21.2
1953,21.2,21.8,21.2,22,21.1,21.7,21.7,22.4,21,20.8,21,21.4
1954,21.5,21.5,21.7,21,20.7,19.8,20,20,20.9,19.9,20.6,21
1955,21.3,21.8,21.6,20.7,21.6,20.7,20.8,21.5,21.4,20.3,20.9,20.6
1956,20.2,21,21.9,22,21.5,21.2,21.5,21.9,21,20.9,21.1,21.1
1957,22.1,22.4,21.6,21.8,21.8,21.9,22.2,22.6,22.6,21.7,22.1,22.5
1958,22.7,23.5,23.1,22.6,22.1,22.2,21.8,21.4,22,21.4,21.3,21.3
1959,22.7,22.7,22.5,22.3,21.6,21.2,21.5,21.4,22.1,21,21.2,21.5
1960,21.6,22.2,21.8,21.8,21.9,21.7,21.5,21.8,22,21.3,21.3,21.7
1961,22.2,22.5,22.1,21.8,22.5,21.5,21.2,21.9,21.7,21.3,20.5,21.5
1962,21.5,21.8,20.9,21.2,20.6,20.3,22,21.5,22,21.1,21.2,21.5
1963,21.9,21,21.8,21.8,21.7,22.2,21.7,22.4,22.3,20.9,20.9,22.4
1964,22.8,22.9,22.9,22,22,20.2,20.8,20.8,21.2,20.5,20.1,20.6
1965,20.8,21.8,21.6,20.7,21.3,21.8,21.8,21.5,21.6,21,20.8,21.4
1966,22.5,23,21.6,22,21.2,21.2,21.6,21,21.6,20.9,20.5,20.7
1967,21.2,21.3,21.3,21.6,21.2,20.8,21,21.5,21.1,20.9,20.8,21.2
1968,21.2,21.2,21.1,21.4,21.1,20.5,21.3,21.6,21,20.5,20.5,21
1969,21,22,22.3,21.3,21.7,21.3,22.1,21.5,21.5,20.3,20.9,21.2
1970,21.5,21.6,21.7,21.4,20.9,21.3,21.2,21.2,21,20.7,20.2,21.2
1971,20.3,20.5,19.9,20.9,20.7,20.8,20.9,20.2,20.4,20,20.2,21
1972,21.2,21.7,21.6,22,21.6,21.9,22.4,21.2,21.6,21.1,21,21.5
1973,22.8,22.6,22.4,21.6,21,20.6,21,20.2,19.9,20.2,20.2,19.8
1974,20.2,20.4,20.2,20.6,20.6,20.5,20.6,21,20,20,20.4,20.6
1975,21.1,20.6,20.8,21.2,20.4,20.6,19.5,22,20.3,19.7,19.6,19.4
1976,20.6,20.4,20.9,21,20.6,20.7,21.2,21.3,22.1,20.4,20.6,20.9
1977,21.8,22.1,22.5,21.5,21.1,20.9,21.4,21.2,21,20.7,20.9,21.3
1978,21.3,22.4,21.4,20.5,20.6,20.5,20.8,21.3,21.1,20.8,21,21
1979,21.2,21.9,21.5,21.7,21,21.1,21.4,21.1,20.7,21,20.8,21
1980,21.1,21.7,22.4,21.9,21.7,21.3,21.6,21,21.7,21,20.6,20.7
1981,21.4,21.6,21.6,21.1,20.6,20.6,20.9,20.7,21.2,20.6,20.7,21
1982,20.9,21.1,21,20.9,20.8,21.6,21.4,22.1,21.4,20.4,21,21.3
1983,22.7,23.4,22.5,21.8,22.1,21.9,22,22,21.8,21,21.3,20.4
1984,20,20.7,21.3,21.1,20.7,20.9,20.9,20.5,20.5,20.6,20.6,20.9
1985,20.6,21.7,21.8,21.6,21.3,21.4,21.1,20.6,20.7,20.6,20.5,20.9
1986,21.1,20.7,20.8,21.4,21,21.1,21.7,21.6,21.9,20.7,20.7,21.8
1987,22,21.5,21.7,21.5,21.1,22,21.7,22.1,21.9,21.3,22,22.1
1988,22.3,22.3,22.9,21.5,21.8,21.1,21.3,20.9,21.2,20.9,20.3,20.9
1989,20.8,20.9,20.7,22.2,20.8,20.7,21.6,20.9,20.8,20.6,21.7,21.1
1990,21.4,21,22.2,21.9,21.6,21.5,21.3,21.7,21.8,20.4,21.1,21
1991,21.4,22.2,21.3,21.1,21,21.4,20.9,20.8,21.3,21.2,20.9,21.9
1992,21.8,22.4,22.8,22.3,21.1,22.3,21.5,21.9,21.4,20.8,21.3,21.5
1993,21.5,21.7,20.9,21.1,21.2,21.8,21.9,21.4,21.1,21.2,20.7,21.4
1994,21.1,21.4,21,21.6,21.1,21.5,21.6,21.4,21.9,21,20.9,21.3
1995,22,22.4,22.1,21.6,21.4,21.6,21.1,20.9,22,20.9,20.7,20.7
1996,20.8,20.9,20,20.5,20.5,20.1,20.8,20.7,21,20.1,20.6,21
1997,20.6,21.6,21.3,21.3,21.3,20.6,21.5,21.4,21.4,21.4,20.8,21.8
1998,23.2,22.8,22.2,22,21.6,21.1,20.9,20.8,20.9,20.9,20.5,20.7
1999,20.6,20.3,20.6,20.7,20.3,20.1,20.7,20.6,19.7,19.9,20.1,20.3
2000,20.1,20.3,20.3,20.6,20.2,20.4,20,20.8,20,20.6,20.4,20.6
2001,20.4,21.3,20.8,21.5,20.9,20.8,20.9,21.9,20.8,21.4,20.9,20.9
2002,21.4,21.9,21.3,20.9,21.3,20.5,21.3,21.5,21.3,21,20.9,21.5
2003,21.8,21.9,21.4,21.3,21.5,20.4,20.9,20.9,21,20.5,20.1,20.9
2004,20.8,21.5,22,21.3,20.9,21.2,20.5,21.4,20.5,21.4,20.6,20.8
2005,21.1,21.9,21.4,21.9,21.1,21.1,21.4,21.3,21.3,20.2,20.5,20.3
2006,20.6,21.6,20.8,21.1,21.1,20.7,21.5,21.3,21.3,21.1,20.6,21
2007,21.7,21.8,21.2,20.9,20.8,20.8,21.1,20.4,21.2,19.9,19.9,20
2008,20.6,20.8,20.6,20.7,20.3,20.5,20.4,20.3,20.6,20.4,20.3,20.5
2009,20.6,21.3,19.7,21.4,21.2,21,21.8,21.9,22.3,21.6,22,21.8
