1901,19.3,20.8,21.2,21.6,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1902,19.7,20.4,21.5,21.5,21.5,21.2,21,21.1,20.9,21.1,20.8,19.8
1903,19.9,21.1,21.8,21.7,21.4,20.8,21,21,20.9,21.1,20.8,19.8
1904,19.7,20.7,21.3,21.5,21.3,21.1,21,20.5,20.9,21.1,20.8,19.8
1905,19.6,20.4,21.6,22,21.7,20.8,21,21,20.9,21,21.1,20.1
1906,19.3,20.9,22.1,22.9,21.4,21.3,20.9,20.8,21.3,21.3,21,20.2
1907,19.5,20.6,21.7,21.7,21.9,21.1,21.1,21.3,21,21.5,20.8,19.5
1908,19.4,20.4,21.6,21.9,21.9,20.8,21.2,20.1,21,21,20.6,19.6
1909,19.7,21.2,22.5,22.1,21.4,21.3,20.7,21.1,20.9,20.8,20.9,19.8
1910,19,20.7,21.1,21.2,21.3,22.1,21.2,20.9,21.1,21.1,20.8,19.8
1911,19.3,20.7,22,21.9,21.6,21.3,21,21,20.9,21.1,20.9,19.6
1912,19.9,21.3,22.2,22.6,22,21.9,21.2,21.4,21.2,21.1,20.7,19.8
1913,19.6,20.6,21,21.4,21.5,21.3,21.5,21.5,21.5,21.1,20.8,19.8
1914,20.7,20.9,21.9,22,22,21.5,21.4,21.1,21.2,21.4,21.4,19.9
1915,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1916,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1917,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1918,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1919,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1920,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1921,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1922,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1923,20.4,20.8,21.4,21,21.5,21.3,20.7,20.4,20.9,21.3,21.2,20.3
1924,19.8,21.9,21.6,21.6,21.7,21.2,20.4,20.3,20.1,21,20.7,19.6
1925,18.2,20.2,21.4,21.6,21.2,20.8,20.9,20.4,20.8,20.7,21.1,19.8
1926,20.1,20.9,21.6,21.4,21.2,21,21.1,21.4,21.7,21.6,21.4,20.4
1927,19.8,21.3,21.1,21.5,21.8,21.3,20.9,20.4,21.4,21.2,21.1,20.5
1928,19.9,20.2,21.2,20.9,21.1,20.8,21,20.1,21,21.1,21,19.5
1929,19.2,20.9,20.9,20.7,21.5,20.6,20.5,19.9,20.3,20.8,20.7,18.7
1930,19.3,21.5,21.8,21.9,21.6,21.1,21,21.1,21.2,21.4,21.5,21.2
1931,20.1,22,21.5,22.9,21.9,21.3,21.2,21,20.8,21.9,21.9,21.1
1932,19.7,21.6,22.8,22.6,21.8,21.3,20.9,21.2,21.1,21.7,21.7,20.4
1933,20.4,21.6,22.4,22.1,21.3,20.9,20.9,20.7,21,21,21.8,20.4
1934,19.8,21,21.8,21.7,21.6,21.3,21.1,20.7,21.2,21.8,22.1,20.3
1935,20.7,21.7,23,22.2,21.9,20.9,21.1,20.7,20.9,20.8,21.5,20.4
1936,19.5,21.6,23.2,21.3,21.4,21,20.4,20.1,20.5,21.2,21.5,19.7
1937,19.6,21.2,22.3,21.9,21.5,21.5,20.9,21,21.1,22.1,21.6,20.6
1938,20.1,21.5,22,22.7,22.5,22,21.3,20.7,21,21.6,22.2,19.6
1939,20.4,21.9,22.7,21.3,21.6,21.2,21.2,21,20.9,21.7,21.4,21
1940,19.7,21,21.8,21.8,21.5,21.2,21,20.9,20.9,21.1,20.8,19.8
1941,21.8,21.6,23.3,22.8,22.7,22.2,21,21.2,21.5,22,21.4,20.8
1942,21.4,22.6,22.5,22.5,21.2,22,21.2,20.6,21.5,21.7,21.5,20.2
1943,20.3,21.1,22,21.9,20.7,20.3,20.6,20.6,20.5,21.6,21.8,20.8
1944,19,21,22.1,21.6,21.8,22.1,21.5,20.6,21.3,21.6,21.1,20.7
1945,21.1,20.6,21.4,21.7,21.3,22,21.4,20.4,21.2,21.2,21.1,19.3
1946,21.2,21,22.1,22.5,21.3,20.9,20.8,20.2,20.1,20.7,21.2,19.6
1947,20.1,23,21.7,22.1,22,22.1,21.5,21.4,21.1,21.6,20.7,20.3
1948,20,20.9,20.9,21.7,21.2,21,20.7,20.8,21.1,21,20.7,20.1
1949,20.2,21.1,22.6,22.3,22.2,22.3,21.4,20.9,21.7,21.5,21.3,19.3
1950,20.5,20.1,21.5,21.8,21.7,22.6,20.7,20,20.2,20.6,20.6,20.2
1951,19.1,19.9,21.4,21.7,21,21.5,20.7,21.2,20.6,20.8,20.3,21
1952,19.7,20.4,21.4,21.8,21.1,21.5,20.3,20.4,20.2,20.5,19.6,20
1953,19.3,20.1,21.1,21.2,20.5,20.8,20.3,20.5,20.5,20.6,20.1,19.7
1954,19.4,20,21.1,22,20.6,21.1,20.6,19.9,20.2,20.3,20.4,20.1
1955,19.2,20.2,20.9,21.5,20.7,20.8,20.1,20.3,20.2,20.2,19.9,19.5
1956,18.7,20.4,21.6,21.7,20.8,20.8,20.7,20.1,19.9,20,19.7,19.8
1957,18.8,20.1,20.8,22,21.2,21.1,20.4,21.1,20.4,20.4,20.3,20.4
1958,20,20.3,21.6,22.4,21,21,20.8,20.9,20.2,20.4,20.4,20.5
1959,19.3,20.4,21.4,22.3,20.8,21,20.6,21.1,20.3,20.8,20.2,20.4
1960,19.4,20.5,21.1,21.6,20.8,21.4,20.6,21.7,20.5,20.7,20.3,20.7
1961,20.2,19.4,20.9,21.8,20.9,21.9,20.1,20.3,20.3,20.5,19.8,18.7
1962,18.3,20.5,21.9,22.1,21,21.1,21.3,20.4,20.3,20.7,21.1,20.7
1963,19.3,21.6,20.5,21.9,21.4,21.6,21.1,21.6,21.6,20.7,20.1,19.9
1964,20.1,20.2,21.8,22.5,21.1,20.9,20.6,20.1,20.3,19.5,19.7,20.5
1965,20.4,20,20.8,21.5,20.9,21.4,20.8,20.1,20.3,20.6,19.7,19.3
1966,20,19.6,21.3,22.1,20.9,21.1,21.4,21.3,20.5,20.6,20.5,19.7
1967,19.1,21.2,21.9,22,21.1,21.5,20.6,21,20.1,20.5,20.8,20.7
1968,19.7,20.2,21.4,21.5,21,21.2,20.3,21.4,21.6,21.3,21.5,21.2
1969,19.6,20.9,23.1,23,22.6,21.6,19.7,22,20.5,21.1,20.4,20.7
1970,20.3,21.4,21.4,22.6,21.5,21.4,21,21.2,20.4,20.9,21,18.8
1971,19.2,20.7,21.6,21.2,20.6,20.7,21.1,20.3,20.4,20.4,19.8,18.6
1972,19.4,20.8,21.9,21,21.8,20.4,21.5,21.2,21.1,21.3,20.4,20.2
1973,21.5,22.4,22.5,21.4,21.3,21.5,21.6,20.9,21.2,21.2,20.4,20.6
1974,19.8,21.2,21.5,21.3,21.5,21.3,20.5,20.9,20.3,20.3,20.4,18.5
1975,18.5,20.6,22,21.7,21.3,20.7,20.6,19.9,20.4,20.7,21.1,19.2
1976,19.7,21.4,21.8,21.3,21.7,20.5,20.9,20.2,20.3,21.2,20.9,19.8
1977,20.5,21.1,21.6,22.4,21.7,21.4,21.8,20.6,21.4,21.5,20.2,19.5
1978,19.5,22,22,21.2,21.7,20.5,20.9,20.3,21,21.5,21.1,18.9
1979,20.1,22,22.6,21.9,22,21.5,22,21,21.6,21.9,21.9,19.8
1980,21.1,22.2,22.4,22.5,22.1,21.6,21.3,21.2,21.5,21.5,21.6,18.8
1981,17.9,20.6,21.9,21.5,21.9,21.5,20.9,20.9,21,21.4,20,19.8
1982,20,20.1,21.5,21.5,22.6,21.1,20.5,20.9,20.4,20.8,20.5,19.7
1983,17.9,21.7,21.8,22.6,21.6,21.5,20.8,21,21.3,21.1,21,20.4
1984,19.5,21,21.7,21.3,21.4,20.5,21.3,21.1,20.3,20.8,20.9,19.3
1985,21.1,20.3,21.7,21.3,21.2,21.4,20.9,20.7,21.3,21.5,21.7,20
1986,19.4,21.7,21.8,21.8,21.4,21,20.5,20.8,21.3,20.9,21.5,19.3
1987,20.2,22.1,22,21.4,22.3,21.8,21.5,21.6,21.8,21.5,21.6,20.4
1988,20.5,21.5,22.6,21.9,21.7,20.9,20.9,21,21.1,21.6,21.1,20.3
1989,18.2,20,21.1,21.3,21.1,21.7,20.9,21.6,21.2,21.4,21.5,19.9
1990,21.3,21,20.9,22,21.6,22,21.5,21.5,21.4,21.8,22.4,22
1991,20.8,21.7,22.6,22.1,21.6,21.8,21.2,21.1,21.3,20.6,21.2,19.2
1992,18.1,20.5,22.1,22.4,21.4,20.9,20.8,21.1,20.7,20.6,20.6,19.8
1993,18.7,20.2,21.6,21.7,21.9,21.2,20.8,21,20.9,21.2,21.2,20
1994,19.9,21,21.9,22.3,21.7,21.1,20.8,21.3,20.5,21,21.1,19.7
1995,19.6,20.3,21.1,22.6,21.8,21.7,22.1,21.5,21,21.8,21.2,20.4
1996,21.5,22.5,22.8,21.6,20.2,21.2,21.5,21,21.2,21.4,20.8,19.9
1997,20.3,19.5,21.9,21,21,21.3,20.4,21.5,21.6,21.4,22.1,20.4
1998,19.7,22.1,23,23.1,22.2,22.1,21.6,20.6,21.2,21.4,21.8,20.5
1999,20.4,21.8,22.9,21.9,21.2,21.3,20.8,20.9,20.6,20.6,21.2,20.2
2000,20,20.6,21.7,21.7,22.2,21.2,20.8,21.3,20.5,21.2,21.2,19.6
2001,19.7,21,21.9,21.6,21.8,21.5,21.5,20.4,20.1,20.3,22.1,20.9
2002,19.6,21.3,21.7,21.8,22.3,21.6,21.5,21.4,21.1,20.3,21.8,20.5
2003,20.4,22.6,22.3,22.4,22.1,21.2,21.2,21.3,21.8,21.8,21.9,20.3
2004,20.4,21.3,22.5,22.1,21.5,21.1,20.8,21.2,21.3,21.6,21.5,21.2
2005,20.1,22.9,23.5,22.3,22,21,20.9,21.2,21.7,22.2,21.5,21
2006,20.8,21.8,21.7,22.2,22,21.7,21.8,21.3,21.3,21.7,21.3,19.4
2007,19.7,21.7,22,21.5,21.9,21.4,21.6,21.7,21.4,21.3,21.8,20.5
2008,19.2,20.7,21.8,21.7,21.4,21.6,21.4,21.6,21.6,21.8,21.3,21.3
2009,20.8,21.6,22.4,22.9,22.6,21.7,21.6,21,21.6,22.2,21.7,20.6
