1901,18.5,21.2,20.8,21.3,21,20.6,20.4,20.2,20.2,20.4,20.6,19.5
1902,20.8,20.8,21.4,22.2,21.5,20.1,20.4,20.8,20.1,19.9,20.6,20
1903,19.9,21.5,22,21.8,21.4,20.8,20.3,20.1,19.9,20,20.6,20.5
1904,19.7,21.5,21.9,21.8,21.4,21.1,20.4,20.6,20.5,20.4,21.1,20.3
1905,18.9,20.2,20.7,21.6,21.4,20,20.5,19.9,20,20.2,21.3,20.6
1906,17.8,22.1,22.3,23.5,21.1,20.8,19.8,20,20.8,20.8,21.2,21.3
1907,20.3,20.5,20.9,21.6,22.3,20.3,20.4,20.1,20.3,21.3,20.2,19.1
1908,20.2,21.4,21.4,22.5,22.1,20.7,20.3,19.7,20.3,20.2,19.7,18.7
1909,19,21.9,22.8,21.4,20.8,19.4,19.3,19,20.2,19.6,20.2,19.4
1910,17.3,21.9,21.1,21.4,21.5,21.7,20.8,20.5,20.5,19.8,20.6,20
1911,19.3,21.1,21.8,21.9,21.4,19.9,20.5,20,20.2,20.1,20.7,19.5
1912,21.3,22,22.1,22.7,21.9,20.9,20.8,20.5,20.6,20.5,20.5,19.9
1913,21.4,22.4,20.3,21.2,22,21.6,21.3,21.5,21.7,20.3,19.9,19.6
1914,21.3,21,20.7,21.6,22.5,22.3,20.9,20.7,20.9,20.8,21.9,20
1915,19.3,21,22.1,21.4,21.3,20.2,20.4,20.2,20.3,20.5,20.7,20.2
1916,18.6,20.2,21.8,21.7,21.2,20.2,20.6,19.8,19.7,19.9,19.8,19.5
1917,20,21.6,21.3,21.4,20.5,19.8,20.4,20.2,19.3,19.6,19.3,19.4
1918,18.5,21.4,21,21.4,21.4,20.6,20.4,19.2,19.3,20.1,20.3,20
1919,19.9,21.6,21.6,21.8,21.4,20.2,19.9,20.2,20,20,21.2,20
1920,19.5,21.4,21.5,21.8,21.4,20.6,20.1,20.2,20.2,20.4,20.6,20.2
1921,20.8,21.5,21.7,21.5,21.2,20.2,20.2,20,19.9,20.4,20.6,19.4
1922,19.6,21.8,22.4,21.9,21.6,20.7,20.6,19.5,19.6,19.4,19.8,19.3
1923,19.9,20.5,21.3,20.2,20.4,20.3,20.2,19.4,20,20.3,20,19.7
1924,18.5,20.7,21.2,20.9,21.2,20.1,19.8,19.4,19.5,19.7,19.4,19.4
1925,17.1,20.6,20.7,21,20.3,19.5,19.3,19.4,19.6,19.6,20.7,19.4
1926,19.8,21.8,21.3,21.2,20.8,19.4,19.1,20.6,21.1,19.9,20,20.6
1927,17.7,21.1,20.7,21.4,20.5,20,19.5,19.4,20,19,19.7,19.5
1928,18.6,20.7,20.5,19.6,20,19.8,19.7,18.6,19.8,19.6,20.2,19.5
1929,18.3,19.3,19.7,19.7,20.6,20.6,21.3,19.4,20.2,18.9,18.4,18.3
1930,19.9,22.1,21.6,21.5,21.1,19.9,20.6,20.2,20.7,18.8,22.2,21.4
1931,21.1,21.5,21.2,21.8,21.3,20.6,20.8,20.3,19.7,20,20.5,20.7
1932,18.6,21.2,22.6,22.9,21.5,19.9,20.1,20.9,21,21,21.7,21.1
1933,21.6,21.9,22.7,21.9,20.3,20.5,20,19.8,20.6,20,20.8,20
1934,18.2,20.7,21.8,21.6,21.1,19.8,19.7,20,19.9,19.9,21.8,20.2
1935,18.6,20.7,22.9,22.8,20.5,19.2,19.3,19.5,18.9,19.3,19.7,19.1
1936,18.6,20.5,22.8,20.4,19.9,19.7,19.4,19,19.1,19.3,19.6,18.8
1937,18.9,21.2,22.5,22.9,22.4,21.4,20.5,20.5,20.2,20.6,21.9,20.5
1938,20.8,22.6,22.3,22.9,22.6,21.9,21,20.4,20.8,21.6,22,21.2
1939,21,21.2,22.8,22.1,21.9,21.1,20.5,20,20.5,21.3,21.8,21.3
1940,20,21.6,21.3,21.5,21.1,20.4,20.3,20.1,20.1,20.4,20.7,19.6
1941,21,21.5,22.8,22.2,22.9,21.4,20.9,20.7,21.1,21.5,21.8,21.2
1942,19.9,22.5,22.3,22.2,21.4,21.3,20.6,19.8,21,20.9,21.4,19.6
1943,19.6,21.2,22,21.7,20.9,20.1,20.5,20.2,20.5,20.6,21.3,20.7
1944,19.6,21,22.3,21.2,22.2,20.7,20.6,20.4,20.7,21.1,20.2,20.5
1945,20.5,20.6,21.6,21.6,21.6,20.7,20.9,20.2,21.2,20.4,20.4,19
1946,20.3,21.6,22.5,22.1,21.1,20.2,20.5,20,20,19.5,20.7,19.3
1947,19,23.3,21.5,22.1,22.4,21.1,20.6,20.7,20.5,20.2,19.7,19.9
1948,18.2,21.6,21.4,21.1,20.9,19.8,20.3,20.4,20.8,20.6,20.7,20.3
1949,20,21.1,22.6,22.1,22.1,20.7,21,20.5,21,21.1,21.2,19.9
1950,20.4,20.4,21.2,21.8,21.4,20.9,20.1,19.8,20.5,20,20.3,19.9
1951,19.9,21,22.1,21.6,21.1,21.2,21.2,20.7,21.1,20.8,20.1,19.4
1952,19.6,20.9,21.6,22.2,21.5,20.3,20.5,20,19.6,19.7,20.1,20.1
1953,20.5,20.7,21.1,21.6,20.9,20.2,19.8,20,20,20.1,20.3,19.3
1954,19.6,21.4,21.5,21.5,20.8,20.2,19.8,19.9,19.8,19.3,20.2,20.2
1955,20.1,21.7,21.5,21.2,20.7,19.8,20,20.1,19.5,20.1,20.2,19.4
1956,19.7,21.5,21.2,21.6,21.2,19.8,19.6,20,19.8,19.6,19.8,18.9
1957,18.8,20.5,20.8,21.2,20.8,20.2,20,19.9,19.6,19.7,19.6,19.3
1958,19.5,20.5,21.6,21.8,20.7,20.2,19.7,20.1,20.1,20.2,20.8,19.3
1959,20.1,21.1,21.5,21.1,20.6,20.3,20.1,20.3,20.1,19.7,19.9,19.5
1960,19.8,21.3,21.5,20.5,20.7,20.2,20.2,20,20.2,19.8,19.8,20.1
1961,20.1,20.5,22,21.6,21.5,20.2,20.4,19.2,19.4,19.9,20.3,19.4
1962,20,21.2,21.7,21.4,20.7,20,20.5,19.8,19.8,20,20.4,19.3
1963,20.2,21.3,21,21.5,21.4,20.2,20.7,21,20.8,20.5,20.3,20.1
1964,20.1,21.4,21.9,21.4,19.9,20.8,19.5,19.3,19.6,19.5,19.9,20.1
1965,19.9,21.3,21.8,21.1,21.5,20.6,20.1,20.4,20.2,20.4,20.4,19.4
1966,19.8,21.2,21.9,21.9,21.9,20.4,20.9,20.7,20.2,20.2,20.5,19.6
1967,18.7,21,21.7,21.6,21.2,20.3,20.2,20.5,20.1,20.1,20.1,20.4
1968,19.2,21.7,21.7,21.2,21.2,20.5,20.9,21.3,20.4,20.4,20.7,20.5
1969,20,22.1,21.6,22,21.5,20.7,20.6,20.6,20.3,20,20.2,20
1970,20.4,22,21.9,21.7,20.2,20.3,19.4,19.5,19.5,20,20.1,19.4
1971,19.4,20.4,20.8,21.1,20.8,19.6,19.1,19.6,19.2,19.7,19.7,18.5
1972,19.8,20.8,20.7,20.6,20.7,19.8,20.3,19.5,20,19.9,20.3,19.7
1973,20.3,21.8,21.2,21.6,20.9,19.9,20,19.9,19.5,20.1,19.4,19.1
1974,19.6,20.7,20.7,21.1,20.6,19.9,19.5,19.7,19.3,19.4,19.6,18.5
1975,18.4,20.4,21.2,20.9,20.6,19.9,19.4,19.2,18.8,19,19.7,18.8
1976,18.9,20.5,20.9,21,20.9,19.9,19.6,18.7,19.5,19.7,19.6,19.1
1977,19.9,21.2,22,21.9,21.6,20.5,20.2,19.4,19.9,20.2,20.5,19.4
1978,19.4,21.3,20.7,21,20.9,20.1,19.2,19.2,19.4,20,19.9,20.9
1979,20.5,20.9,21.7,21.5,21,20.6,20.2,20.5,20.1,20.4,20.7,19.4
1980,20.1,21.1,21.4,21.7,20.9,20.9,19.9,20.1,20.2,20,19.9,18.2
1981,19.6,22.7,22.1,22.4,21.6,20.9,20.6,20.7,20.5,20.9,20.9,21
1982,20,22,22.4,22.2,21.3,21.3,20.5,20.2,20.4,20.8,20.9,20.9
1983,18,22.3,22.5,23.1,22.6,21.2,20.8,20.4,20.9,21.2,21.4,20.9
1984,20.4,21.9,22.6,22.3,21.8,21.1,21.1,20.9,20.4,20.7,21.5,20.5
1985,21.2,21.5,23,22.7,21.7,20.6,20.3,20.7,20.3,20.6,21.5,20.2
1986,19.9,22,22.6,22.8,22.4,21.2,20.6,19.7,20.5,20.7,21.1,20.3
1987,21.5,22.7,22.9,23.3,22.9,21.8,21.8,22,21.4,21.4,21.9,21.2
1988,20.5,22.7,22.9,22.7,22.7,21.3,20.8,20.6,21,21.3,21.5,20.6
1989,18.6,21.6,21.9,22.3,21.6,21.3,20.9,20.7,20.9,20.8,21.5,21
1990,21.1,22,23,22.8,22.2,21.5,20.9,20.6,20.6,21.1,22,21.3
1991,20.4,21.8,22.4,21.5,21.4,21.2,21,20.3,20.6,19.9,20.9,19.8
1992,19.4,21.3,22.7,22.8,21.5,20.3,19.8,19.9,19.8,20,19.6,20.3
1993,19.1,21.1,21,21.7,21.7,20.7,20,20.3,20,20.6,21,20.4
1994,20.8,22,22.7,22.1,21.4,20.6,20.5,20.5,20.2,20.2,20.4,19.8
1995,19.5,21.4,21.9,22.1,21.5,20.8,20.7,20.5,20,20.4,20.3,20.6
1996,20.6,21.7,22.4,22.1,21.8,20.8,20.1,20,19.8,20.3,20.5,20.1
1997,20.4,21.1,22,21.9,21.3,20.5,20.2,19.8,20.4,20.8,21.1,20.6
1998,19.9,22.2,23.4,22.9,22.2,21.1,20.9,20.1,20.4,20.9,21.3,20.3
1999,20.5,20.9,21.5,21.7,21.3,20.7,20.8,20.4,19.8,20,20.8,20.8
2000,20.8,20.9,22,22.2,21.5,20.6,20.4,20,20.1,20.3,20.1,20.5
2001,19.8,21.5,22.3,21.6,21.3,20.9,20.7,20.4,20.7,20.7,21,20.9
2002,20.2,21.5,21.6,21.4,22.5,20.7,20.7,20.6,20.4,20.8,21.2,20.1
2003,20.9,22.4,23,22.1,21.7,20.8,20.3,20.8,21,21,20.7,20.9
2004,21.3,22.2,22.8,22.3,21.7,20.6,20.5,20.5,20.4,20.7,21.3,21.4
2005,19.9,23.1,22,22.5,22,21.5,20.5,20.1,20.7,20.4,21.6,21
2006,19.4,22.2,21.2,22.7,21.1,20.6,21.2,20.6,20.5,20.7,21.1,20.9
2007,19,21.7,22.5,22.3,22.1,21,21.2,21.1,20.5,20.9,21.6,20.3
2008,19.1,21.3,21.9,22.4,21.6,21.2,21.2,21.1,20.9,21.3,21,21.3
2009,20.5,22.6,22.3,22,22.2,21.3,21.3,21,20.9,21.2,20.4,21
