1901,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1902,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1903,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1904,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1905,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1906,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1907,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1908,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1909,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1910,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1911,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1912,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1913,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1914,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1915,21.1,21.3,21.6,21.6,21.7,21.2,20.9,20.9,20.8,21.4,21,21.3
1916,21.2,21.3,21.6,21.9,21.6,21.1,20.7,20.4,20.7,20.9,20.8,20.9
1917,20.9,20.9,21.5,21.6,21.3,20.7,20.5,20.3,20.5,20.9,20.8,21
1918,21,21.2,21.2,21.4,20.9,20.6,20.5,20.6,20.5,21.1,20.7,21
1919,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1920,21.1,21.3,21.6,21.6,21.3,20.9,20.5,20.4,20.5,20.9,20.8,21
1921,21.1,21.2,21.2,21.3,21,20.7,20.5,20.2,20.5,20.6,20.7,20.9
1922,21.1,21.2,21.5,21.6,21.2,20.8,20.4,20.4,20.5,20.8,20.7,20.9
1923,20.8,21.2,21.5,21.4,20.9,21,19.9,20.3,20.6,20.7,20.9,20.7
1924,21.6,21.2,21.9,21.8,21.5,20.7,20.3,20.3,20,20.6,20.5,20.8
1925,20.6,20.7,21,21.4,21.3,20.6,20.4,20.2,20.6,21.1,20.6,21
1926,21.3,21.5,22,22.1,21.6,21.2,20.6,20.4,20.4,20.9,20.9,20.7
1927,20.8,21.1,21.5,21.5,21.2,20.8,20.1,20.5,20.6,20.7,21,21.3
1928,21.1,21.5,21.4,21.7,21.2,20.8,20.4,20.3,20.5,20.8,20.8,20.8
1929,21.3,21.4,21.4,21.7,21.2,20.7,20.1,20.5,20.6,20.9,20.9,21.2
1930,20.3,21.2,21.4,21.7,21.1,20.5,20.2,19.9,20,21,21.2,21.1
1931,21.3,21.8,22,21.9,21.9,21.4,20.8,20.3,20.8,20.8,20.6,21.4
1932,21.9,21.8,21.6,22.3,21.8,21.3,20.3,20.9,20.5,21,21.1,21.1
1933,22.1,21.4,21.9,21.6,21.8,21,21,19.7,20.1,20.1,20.7,20.6
1934,20.4,20.7,20.7,20.9,20.5,21.1,20,19.9,20.8,20.4,20.5,20.9
1935,20.8,20.8,21.7,21.1,21,20.9,20,20.3,19.5,20.8,20.5,21.2
1936,21.2,20.9,22,21.3,21.3,20.3,19.9,19.5,19.9,20.3,21.2,20.5
1937,20.9,21.3,21.8,21.2,20.8,20.9,20.5,20.4,20.3,20.3,20.7,20.7
1938,20.9,21.2,21.2,21.5,21.1,20.5,20.2,20.1,19.9,20.6,20.3,20.7
1939,20.2,21.1,21.5,21,20.8,20.8,19.9,20.5,20.6,20.4,20.8,21.1
1940,19.3,20,19.5,21.8,21,20.5,20.3,20.6,20,20.5,20.3,19.4
1941,21.3,21.7,21.5,21.3,21.5,20.9,19.9,20.6,20.8,20.9,20.9,21.3
1942,21,21.2,21.4,21.1,20.5,19.9,19.5,19.5,20.2,20.3,20.4,20.6
1943,21.9,20.4,21.8,22.2,20.5,19.9,21.2,19.2,19.7,21.4,20.2,21.6
1944,22,21.6,22.4,22.8,21.2,20.8,21.5,20.9,21.1,21.1,21.2,21.2
1945,21.8,22.2,22.3,20.9,20.4,21.4,20.6,20.8,20.8,21.2,21.2,20.9
1946,20.3,21.3,21.8,22.2,21.7,21.3,20.9,20.5,20.8,20.9,21,21.1
1947,21.3,21.1,21.1,21.7,21.1,20.5,20.1,20.2,20.3,20.8,20.6,20.9
1948,21.3,21,21.4,21.8,21.8,20.8,20.7,21.4,21.1,20.1,21,20.8
1949,20.6,21.3,22.1,21.4,20.8,20.5,19.8,19.9,19.7,20.5,20.8,19.9
1950,19.2,19.7,19.5,19.9,20.6,18.9,18.8,19.4,20.9,20.4,21,21
1951,20.2,20.6,20.9,21.6,22,22,20.7,20.6,21,21.1,20.9,21
1952,21,21.2,21.7,21.3,21.6,20.7,20.2,20.4,20.2,20.3,20,20.8
1953,20.1,20.8,20.9,21.2,20.6,20.5,19.5,21.7,19.1,20.3,20.7,20.2
1954,20.6,21,21.1,21,20.3,19.2,19.2,18.9,19.5,19.8,20.5,21
1955,20.5,21.1,21.3,20.8,20.9,20.2,20.1,20.1,20.2,20.2,20.1,20
1956,19.7,20.4,21.8,21.5,20.8,20.6,20,20.3,19.9,20.6,20.2,20.7
1957,20.8,21.1,21,21.1,22,21.4,21.7,21.4,21.1,21.3,21,21.7
1958,20.2,21.4,21.6,21.6,21.5,21.3,20.1,20,20,20.3,20.2,20.7
1959,21.4,20.6,21.6,21.4,20.9,20.5,20,20.2,19.8,20.5,20.2,20.9
1960,20.8,21.1,20.7,21,20.7,19.9,20.1,19.8,20,19.8,20.3,21
1961,21.4,21,20.8,21.5,21.4,20.8,20.3,20.1,20,21,21.1,21.1
1962,21.5,21.3,21.2,21.3,21.1,20.3,20.6,20.5,20.3,20.7,21.1,21.2
1963,21.4,21.6,21.9,21.9,21.3,20.7,21.1,21,20.7,20.2,20.4,21
1964,20.5,21.6,21.3,21.7,21.1,20.5,19.7,20,19.9,20.1,20.5,20.5
1965,22,20.4,21.1,21.5,21.6,20.9,20.7,20,20.1,20.7,20.9,21.1
1966,21.4,20.7,21,21.7,21.4,20.8,20.9,20.6,20.8,21.3,21.2,21.3
1967,21.3,21.9,22.1,21.2,21.5,20.5,20.2,19.7,19.8,20.6,20,20.5
1968,20.6,21.1,20.9,20.8,20.1,19.9,20.8,20.2,21.3,20.2,19.7,20.1
1969,20.3,21.2,21.9,22.4,22,21.7,20.2,20.4,20.6,20.7,20.6,20.5
1970,21.3,21.7,21.4,20.9,21.2,20.8,20.5,20.7,20.6,20.8,20.3,20.9
1971,20.4,20.6,20.5,20.5,20.6,20.4,20.1,20.2,20.2,20.2,20.2,20.7
1972,21.3,21.4,21.3,22.6,22.8,21.9,21.8,22.1,20.8,21.8,20.9,22.2
1973,21.5,21.2,21.8,21.2,20.8,21,19.8,19.4,21,20.3,20.2,19.7
1974,20.3,20.4,20.4,20.6,20.8,21.1,19.5,20.5,20.1,20.2,20.6,20.4
1975,20.8,20.6,21.1,21.1,20.8,20.2,19.5,20.8,20.1,20.3,20.2,20.3
1976,20.5,21,21.6,21.2,21.2,21,20.5,19.8,19.8,20.6,20.7,20.9
1977,20.4,20.8,21.4,21,20.9,21,20.5,20.5,20.5,20.9,20.9,21.5
1978,20.5,21.2,21.6,21.2,21,20.6,20.1,19.3,19.9,21.2,21.3,21.4
1979,21.1,21.1,21.7,21.6,21.4,20.9,20.1,20.6,21,20.7,20.5,20.1
1980,20.5,21.3,21.2,21.2,21.1,20.5,20.5,19.6,20,21.1,20.5,20.5
1981,20.9,21.2,21.8,21.8,21,21,20.5,20.3,20.4,20.8,21.1,21.3
1982,21.8,22.6,22.3,22.3,21.9,21.4,21.5,21,21.4,22,22.1,22
1983,22.1,22.9,23,22.5,22.4,22.1,21.8,21.1,20.3,20.6,20.7,20.7
1984,19.6,21,21.9,21.3,20.9,21,20.1,19.9,20.3,20.7,20.6,20.7
1985,20.5,20.2,21.3,21.1,20.4,20.5,19.5,20.2,20.2,20.5,20.8,20.5
1986,20.7,21.2,21.2,21.5,20.8,20.5,20.3,20.6,20.6,21.4,21,21.5
1987,21.2,20.8,21.8,21.7,21.1,21.1,20.8,21.2,20.8,21.6,21.4,21.3
1988,21.6,22,21.7,22.3,22.1,20.8,20.9,20,21.1,21.2,20.8,21.7
1989,20.9,20.6,20.9,21.5,21,20.6,20.6,20.1,20.5,21.1,21.8,20.9
1990,21.3,21.4,22.4,22.3,21.7,21.6,20.9,20.6,20.5,20.9,20.7,20.8
1991,20.9,21.6,22.3,21.8,22.2,22.2,21.5,21,20.8,20.7,21.6,22.1
1992,21.5,21.8,22.3,22.4,21.9,21.5,21.3,21.4,20.7,20.8,21.2,21.9
1993,21.9,21.4,21.3,21.8,21.8,22,21.5,20.7,20.8,21.3,21.1,21.5
1994,21,21.2,21.1,21.5,21.4,21.2,20.7,20.3,20.9,21.4,21.9,21.7
1995,21.5,21.6,22,22.5,22.2,21.3,20.7,20.4,22,21.9,21.8,21.7
1996,20.9,21.8,22,22,21.3,20.9,21.6,21.5,20.7,21.4,21.4,21.9
1997,21.2,21.8,22.7,22.8,22.6,22.3,22.6,21.2,22,23.1,22,22.3
1998,23.7,23,24.2,23,23.1,23.2,21.6,21.5,20.4,22.1,21.2,21.4
1999,21.3,21.4,21.5,21.7,20.9,20.4,19.7,20.4,20.3,20.3,20.6,20.5
2000,20.4,20.5,20.9,21.3,20.6,20.2,19.7,20.2,19.8,21.1,20.5,20.8
2001,21.3,21.9,20.9,21.6,20.6,20.1,20.1,20.6,19.9,21,20.7,20.7
2002,20.9,21.6,21.7,21.8,21.7,20.3,20.4,20.6,20.4,21.9,22.4,22.4
2003,21.5,21.6,22,21.8,21.2,20.2,20.2,20,20.8,21.7,20.5,20.9
2004,22,22.6,23.5,22,20.7,20.8,19.8,20.5,19.9,21.7,20.6,21.4
2005,20.8,22.6,22.7,22.4,20.9,20.9,20.4,20.1,20.1,21,19.8,20
2006,20.6,20.9,22.3,21.7,21.5,21.3,21.8,20.8,20.5,21.9,20.8,21
2007,21.6,21.4,22.4,21.6,21.2,20.2,20,19.2,19.8,20.2,20,19.7
2008,20.9,20.9,21.4,20.9,20.5,20.4,20.3,19.9,20.5,20.9,20.8,21
2009,21,21.1,21,22.2,22.2,21.7,21.7,21.8,21.7,21.6,21.7,21.7
