1901,19.6,19.7,19.7,20.3,21.7,21.9,21.6,22,21.6,21.2,21,20.4
1902,19.5,19.7,19.3,20,21.1,21.7,21.7,21.9,21.3,21,20.9,20.4
1903,19.8,19.5,19.3,20.1,21.7,22.4,21.8,21.8,21.3,21.2,21,20.2
1904,19.5,19.1,19.2,19.6,21.3,21.8,21.5,21.4,21.1,20.9,21.2,20.4
1905,19.5,19.1,19.2,20.3,21.1,22,21.6,21.8,21.4,21.1,21.4,20.4
1906,19.4,19.2,19.4,19.9,21.4,21.7,21.6,22,21.4,21.3,21.3,19.8
1907,19,18.6,18.9,19.4,20.9,21.8,22,21.8,21.5,21.3,21.2,20.5
1908,19.5,19.2,19.2,19.8,21.1,22,21.9,22,21.6,21.3,21.2,20.6
1909,19.4,19.2,19.6,19.7,21.4,21.6,21.7,21.5,21.5,21.3,21,19.8
1910,19.2,18.9,19.2,19.6,20.8,21.9,21.8,22,22,21.1,21.1,20.6
1911,19.3,19,19,19.5,20.9,21.8,21.7,22,21.5,21.4,21.4,20.3
1912,19.6,19.5,19.5,19.9,21.3,21.9,21.9,21.8,21.5,21.3,21.2,20.4
1913,19.3,18.9,19.1,19.6,21.7,21.3,21.4,21.3,21.1,21.6,20.8,19.9
1914,19.3,19.1,19.4,19.7,21,21.6,21.4,21.4,21.4,21.2,21.1,20.5
1915,19.5,19,19.3,19.9,21,22,21.9,22,21.7,21.4,21.2,20.5
1916,19.5,19.1,19,19.5,21.3,21.8,21.5,21.6,21.2,20.8,20.8,19.6
1917,18.9,18.6,18.7,19.6,21,22,21.7,21.5,21.2,21.6,21.2,19.9
1918,18.9,18.9,18.7,19.5,20.9,21.8,21.5,21.9,21.5,20.8,20.7,19.6
1919,19,18.9,18.9,19.8,21.3,21.8,21.3,21.7,21.1,20.8,20.6,20
1920,19.2,19.2,19.2,19.7,21.2,21.5,21.3,21.3,21.1,20.8,20.8,19.8
1921,19.5,19.2,19.2,19.2,21.3,21.9,21.1,21.6,21.4,21,20.9,20
1922,19.2,19.2,18.9,20.3,20.8,21.5,21.4,21.4,21.4,21.1,20.8,19.8
1923,18.8,18.6,18.5,19.4,21.4,21.2,21.4,21.6,21.3,21,20.8,19.7
1924,19.1,18.9,19.5,20.2,21.5,21.7,21.5,21.7,21.2,20.9,21,20.1
1925,18.9,18.6,18.9,19.6,21.4,21.5,21.5,21.8,21.4,21.3,20.6,20.2
1926,19.5,18.9,19.6,19.8,21.4,22.2,21.7,21.8,21.3,21.1,21.2,19.9
1927,19.2,18.4,18.8,19.2,20.8,21.4,21.4,21.4,21.4,21,21,19.9
1928,19.1,18.6,18.8,19.4,21.1,21.7,21.5,21.8,21.3,21,21.2,20
1929,19,18.9,19.1,19.4,20.5,21.5,21.5,21.7,21.1,21,20.6,19.7
1930,19,18.8,19.1,19.6,21.4,21.8,21.7,21.8,21.3,21.2,21.1,20.2
1931,19.3,19.3,20.3,20.6,22.4,22.5,22.1,22.2,21.7,21.4,21.3,20.4
1932,19.4,18.6,19.6,20.4,21.5,22.3,21.8,22.1,22,21.5,21.3,20.4
1933,19.1,18.6,19.1,19.9,21.4,22,21.7,21.7,21.4,21.1,21.1,20
1934,18.9,18.6,18.9,19.9,21.3,21.9,21.4,21.7,21.4,21.1,20.7,20.2
1935,19.5,19.8,19.3,20.3,20.9,22.9,21.7,21.4,20.8,21.4,21.6,19.6
1936,19.7,19.6,20,20.6,22,22.1,21.8,22.1,21.9,21.3,20.8,19.7
1937,19.2,19.1,19.5,20.2,21.9,22.7,22.1,22.3,22.5,21.5,21.7,20.6
1938,19.3,18.8,19.5,19.6,21.5,21.6,21.7,21.8,21.5,21.7,20.5,20.2
1939,19.1,18.2,20.4,19.6,21,21.3,21.4,22.1,21.9,21.9,21.7,21.2
1940,20.2,20,20.3,21.4,22.7,22.6,22,22.3,22,22.1,22,20.8
1941,20.2,20.8,20.8,21.1,22.4,22.1,21.9,22.5,21.7,22,21.8,21.1
1942,20.5,20.4,20.8,21.5,22.1,22.8,22.1,22.1,22.1,22,21.9,20.9
1943,20,19.6,19.3,20.6,21.1,21.9,22,21.9,22.1,21.9,21.6,20.6
1944,19.9,19.6,19.7,20.6,21.2,21.9,22.2,22.6,21.9,21.7,21.7,20.7
1945,19.4,19.1,19.4,19.8,20.9,22.2,22.1,22.2,21.6,21.3,21.2,20.7
1946,19.6,18.9,19.5,19.8,20.8,21.5,21.8,22.3,21.6,22,21.8,21
1947,19.5,19.9,20.2,20.4,21.3,22.1,21.8,22.3,22.3,22.9,22.2,21.2
1948,20.4,20.1,20,20.6,22.8,22.6,22,22.1,21.9,21.8,21.5,20.3
1949,19.2,19.1,19.6,20.4,22,22.1,21.8,22.9,22.1,21.7,21.5,20.2
1950,19,19.5,19.3,20.3,21.1,21.9,22.1,22.4,22.3,21.9,21.9,20.5
1951,18.7,18.8,18.6,20.1,21.4,21.8,21.6,21.7,21.6,21.3,21.4,20.3
1952,19.1,19.1,19.2,20.3,21.6,22,21.4,21.9,21.7,22,20.9,19.6
1953,19.1,18.7,19.1,20,21.2,21.9,22.6,22.3,22,21.3,21.6,20.1
1954,18.6,18.7,19.2,19.6,20.9,21.7,21.4,21.8,21.5,20.9,20.3,19.5
1955,18.7,19.1,18.3,19.4,20.9,21.4,21,22,21.5,21.4,21.2,20.1
1956,19.6,19.1,19.6,19.9,21,21.7,21.2,21.3,21.5,21,20.6,20.2
1957,18.9,19,18.5,19.2,20.5,21,21.7,22,21.7,21.2,21.4,20.5
1958,19.3,19.4,20.6,21.5,21.9,22.8,22,22.4,21.9,21.5,21.2,20.6
1959,19.2,19.4,19.8,20.4,20.7,21.7,21.3,21.8,21.9,21.5,21,20.9
1960,19.7,19.4,19.6,19.9,21.2,22.4,21.4,21.9,21.3,21.2,21.3,19.8
1961,19.4,19.1,19.3,20.1,21.1,21.5,21.5,21.7,21.4,21,21,20.5
1962,19.6,19,19.6,20.3,21.4,22.2,22.2,22.1,21.9,21.6,21.1,20.4
1963,20.1,19.3,19.4,20.3,21,22,21.9,22.7,22.2,21.8,21.6,21
1964,19.4,20.1,19.9,20.5,21.1,21.9,22,22,21.9,21.4,21.3,19.1
1965,18.9,19.1,20,19.8,21.5,21.5,21.8,22,21.7,21.6,21.8,20.9
1966,20.2,19.7,19.9,20.3,21.3,22,22.2,22.1,21.7,21.7,21.8,20.9
1967,19.9,19.6,19.2,20.1,21.3,22.2,21.9,21.9,21.5,21.3,21.1,19.8
1968,19,19,19.1,19.8,21,21.5,21.6,21.8,21.6,21.1,21.1,19.7
1969,18.9,18.7,20.2,21.1,22.3,22.1,21.7,21.8,21.6,21,21.4,20
1970,19.8,19.2,19.2,20.5,21.7,21.9,21.5,21.5,21.5,21.1,20.6,20.3
1971,19.2,18.3,18.7,19.4,20.3,21.3,21.1,21,20.8,20.6,20.9,18.9
1972,18.9,18.4,19.4,19.5,20.7,21.6,21.6,21.4,21.1,21.2,21,20
1973,19.4,18.8,19.8,20.1,21,21.7,21.6,21.7,21.4,21,20.7,19.3
1974,19.5,19.2,18.9,19.2,20,21.1,21.1,21.6,21.1,20.9,21.4,19.3
1975,18.8,18.7,18.9,19.2,20.7,21.9,21.6,21.5,21.5,20.8,20.4,19.4
1976,18.5,18.5,18.4,19.7,20.8,21.6,21.5,21.8,21.8,21.6,21.2,19.7
1977,18.9,19.2,19.9,20,21.1,22,21.5,21.9,21.6,21.3,21.6,20.1
1978,18.7,19.8,19.7,20.7,21.8,22,21.8,21.9,21.8,21.5,21.1,20
1979,18.7,19.7,19.8,20.7,21.8,22.6,22.1,22.2,21.9,21.8,21.5,20.8
1980,19.9,19.7,19.5,20.7,22.5,22.8,22.2,22.5,22.3,21.7,21.4,20.7
1981,20,20.9,20.7,21.6,22.9,23.3,22.8,22.9,21.3,21.9,22,21.7
1982,20.5,20.8,20.5,21.2,22.5,23.5,23.1,22.8,22.3,21.8,21.6,21
1983,20.8,20.4,21.7,21.5,23.3,23.9,23.6,23.3,23.1,21.7,21.4,21.3
1984,20.2,20.5,20.5,20.8,22.2,23,22.8,22.9,22.4,22.2,22.3,20.9
1985,19.7,20.3,20.2,20.6,22.4,23.3,23.5,23.1,22.8,22.2,22,21.9
1986,20.5,19.1,20.4,21.7,22.4,23.5,23,23.2,22.8,22.5,21.8,20.9
1987,20,19.8,20.5,22.5,23,23.8,23.7,23.4,22.9,22.8,22.3,22.2
1988,20.9,20.9,20.7,21.4,22.8,23.4,23.7,23.1,22.7,22.7,22.4,21.1
1989,20.2,21.4,20.2,20.8,21.8,22.9,23.1,22.8,22.9,22.5,20.9,21.4
1990,21.3,19.7,20.2,21.3,23.1,23.7,23.4,23.4,23,22.8,22.5,21
1991,21.7,21.4,21.9,22.2,22.8,24.2,22.9,23.1,22.7,21.6,21.7,20
1992,20.9,20.9,21.1,22.2,23.5,23.7,23.4,23.3,22.6,21.8,21.8,20.9
1993,20.8,20.1,21,22,22.8,23.8,23.3,23.1,22.6,22.5,21.9,21.2
1994,20.5,18,19.7,20.8,19.8,23.1,23.1,23.4,22.3,22,22,21.5
1995,19.2,20.2,20.6,21.1,22.6,23.7,23.8,23.2,23.5,22.3,22.4,21.4
1996,20.9,21.2,21.4,21.6,22.8,23.6,23.4,23.2,23.4,22.7,22.6,21.1
1997,21,21.8,20.6,20.8,22.6,23.9,23.5,23.3,23.5,23.9,23.3,22.4
1998,21.7,21.4,22.4,23.1,23.8,24.3,23.7,24.3,23.9,23.3,23,22.4
1999,21.1,20.1,21.3,21.9,23,23.7,23.6,23.6,23.3,23.1,23.1,21.8
2000,21.2,20.9,20,21.9,22.7,23.6,23.1,23.1,23,22.4,22.8,21.4
2001,20.6,20.1,20.8,21.7,23.2,23.9,23.6,24.3,22.8,23.4,22.5,23.1
2002,22,20.6,21.6,22.1,23.1,24.1,23.7,23.5,23.3,22.9,22.7,22.1
2003,21.2,21.8,20.8,22.8,23.7,23.6,24,23.7,22.6,23.3,23.5,22.4
2004,21.9,20.9,21.3,22.2,22.6,23.5,23.6,23.8,23.3,22.4,22.3,21.7
2005,21.1,20.8,21.8,23,23.7,23.8,23.6,23.9,23.8,23.1,22.5,22
2006,20,21,21.3,21.9,23.3,23.6,23.4,23.5,23,22.7,22.3,21.8
2007,20.8,21.1,21.2,21.9,23.2,23.7,23.6,23.2,22.7,22.3,22.5,21.5
2008,20.4,20.4,20.1,21.1,22.3,23.4,23.4,23.8,22.6,22.2,22.3,21
2009,21.1,20.6,20.3,21.1,22.2,23.3,23.7,24,23.3,22.9,22.8,21.9
