1901,19.1,19.5,19.5,20,21.3,21.3,21.2,22,21.9,21.3,20.7,20
1902,18.9,19.5,18.7,19.4,20.4,20.9,21.5,21.7,21.4,21,20.6,20.2
1903,19.6,19.2,18.9,19.6,21.4,22,21.7,21.7,21.3,21.2,20.6,19.8
1904,19,18.5,18.7,18.7,20.6,21,21,20.8,21,20.7,20.9,20.1
1905,18.9,18.1,18.8,20,20.8,21.5,21.1,21.6,21.4,21.3,21.5,20.2
1906,18.9,18.7,18.9,19.2,20.9,20.9,21.3,21.9,21.5,21.4,21.2,18.9
1907,18.5,17.5,18.1,17.8,20.1,21.1,21.9,21.6,21.8,21.7,21.6,20.5
1908,19,18.8,18.5,19,20,21.2,21.8,22,21.8,21.4,21.5,21.1
1909,19.3,19.3,19.1,18.9,20.8,20.7,21.5,21,21.6,21.5,21.3,19.2
1910,18.8,18.4,18.7,18.4,19.6,21.3,21.6,22.2,22.8,21.2,20.7,20.6
1911,19,18.3,18.1,17.5,19.5,20.9,21.4,22,21.6,21.8,21.5,20.3
1912,19.3,18.9,19.1,19,20.9,21.1,21.6,21.6,21.6,21.5,21.1,20.4
1913,18.9,18.1,18.4,18.8,21.6,19.8,20.5,20.1,20.8,21.9,20.2,19.1
1914,18.6,18.3,18.7,18.6,19.9,20.4,20.4,20.5,21.3,20.9,20.7,20.4
1915,19.4,18.2,18.2,19.4,20.2,21.5,22.1,22.2,22.3,21.8,21.5,20.6
1916,19.6,18.7,18.2,18.3,20.8,20.9,21.1,21.2,21.2,21,20.6,18.7
1917,18.1,17.5,17.8,18.2,19.6,21.1,21.1,21.2,21.1,21.9,20.9,18.9
1918,17.3,18.1,17.4,18.1,19.8,20.5,20.9,21.3,20.8,20.3,20,18.6
1919,17.7,17.5,17.7,19.4,20.6,21.2,20.6,21.5,21,20.8,19.8,19.3
1920,18.4,18.6,18.6,18.4,20.2,20.4,20.4,20.6,20.9,20.5,20.3,19.1
1921,18.6,18.3,18.3,18.1,20.5,21.5,20.6,21.2,21.6,21.3,20.5,19.2
1922,18.3,18.9,17.9,20.2,19.8,20.7,20.5,20.7,21.5,21,20.5,19.9
1923,17.9,17.9,18,18.3,20.6,19.9,20.5,20.8,20.9,20.9,20.3,19
1924,18.7,18.2,19.2,19.9,20.6,21,21.4,21.8,21.7,21.3,21.1,20.1
1925,18.7,18,18.4,18.4,21.1,19.8,20.9,21.9,21.9,21.5,19.6,20
1926,19,17.5,19.4,19,20.4,20.6,21.5,21.7,21.6,22,21.9,20
1927,18.7,17.7,18,18.5,20.1,20.6,21.4,21.3,21.5,21,20.9,19.1
1928,18.5,17.5,17.7,18.6,20.2,21.1,21.3,21.8,21.3,21,21.1,20.1
1929,18.8,18.7,19.3,18.7,19.9,20.8,21,21.4,21.1,20.5,20.1,19.2
1930,18.2,17.8,18.3,18.6,20.9,21.1,21.3,21.7,21.5,21.3,20.8,19.5
1931,18.6,18.2,19,19.7,22.3,21.9,22.4,22.5,22.5,22.5,22,20.7
1932,18.9,18.2,18.5,20.1,21.8,22,21.9,23,23.2,21.7,21.1,19.8
1933,18.4,19.1,19.8,19.1,21.3,21.3,21.7,22.5,21.7,22.4,21.9,19.5
1934,17.5,18.3,17.5,18.5,20.8,21.1,21.7,22.1,21.8,21.9,20.3,20.2
1935,17.9,18.1,18.3,18.5,20.3,20.6,20.8,21.8,21.5,20.9,20.7,19.4
1936,18.2,18.3,18.4,19.4,21.7,22.2,21.5,22.1,22,21.2,20.7,19.7
1937,19.3,18.7,19.7,20.4,22.6,21.6,21.7,22,23.4,22.5,21.6,20.5
1938,18.8,18.1,18.2,17.8,20,20.7,20.5,21.8,21.6,21.1,21,20.3
1939,18.1,17.5,18.1,18.5,19.9,20.6,21,21.2,21.8,22.2,21.5,20.1
1940,18.8,19.4,19.2,19.5,21.1,21.3,21.6,21.7,22.3,22.5,21.3,19.9
1941,18.5,19.1,19.1,19.8,21.6,21.3,21.2,21.6,21.9,21.3,20.7,21.3
1942,19.2,19.2,19.5,20.4,21.2,21.8,21.9,21.7,22,22,21.3,20.6
1943,18.7,19,18.8,19.5,20.1,20.8,21.2,21.9,21.7,21.9,21.1,20.5
1944,18.5,18,18.5,19.2,20.3,21.5,21.7,22.2,21.2,22.1,20.6,20.6
1945,17.7,18.7,18.6,18.6,20.8,21.3,21.4,21.7,21.9,21.4,20.1,19.2
1946,18.6,18,18.6,18.7,20.4,21,21,21.5,21.2,21.6,21.1,20.4
1947,20.1,19.1,18.7,19.2,20.4,21.1,21.4,21.4,21.9,21.9,21.3,19.8
1948,19.1,18.8,18.9,19.4,21.6,21.5,21.6,22,22.4,21.6,20.7,19.9
1949,18.7,18.2,19,18.6,20.6,20.4,20.6,21.3,21.4,21.1,20.2,19.3
1950,17.7,17.7,17.3,17.7,19.6,20.8,20.6,21.6,21.7,21.4,21.4,19.8
1951,18.6,17.8,18.1,19.7,22,21.1,21.2,22.4,21.5,21.8,21.4,19.9
1952,19,18.7,18.6,19.9,21.3,21.7,21.3,22,21.6,21.7,21.4,18.8
1953,17.8,18.1,18.5,19.7,20.7,21.5,21.7,21.9,22.6,21.5,21.8,20.5
1954,18.6,18,19.2,19.4,21,21.2,22,22.6,22,21.6,20.9,20.1
1955,19.2,19.2,18.4,19.1,21.4,22,21.9,23.1,22.8,22.4,22.2,20
1956,18.8,19.2,19.3,19.9,21.1,21.4,21.4,21.9,21.4,21.9,21.9,20.6
1957,19.6,18.6,19.5,20.1,21.4,22.4,22.4,22.6,23,22.5,22.2,21.2
1958,20.4,20.2,20.7,21.6,23,22.9,22.5,23.3,23.1,22.7,22,20.7
1959,19.9,19.4,19.5,21.1,21.2,22.3,22.4,22.7,23,22.4,22,21.5
1960,19.8,20.5,20.7,21.2,22.4,23.2,22.8,22.6,22.8,22.5,22.3,21.3
1961,20.1,19.6,20.2,20.9,21.9,22,22.4,23.2,22.7,22.2,21.6,21
1962,19.5,18.6,19.3,20.2,21.1,22.2,22.6,22.5,22.3,22.1,21.6,21.1
1963,19.7,19.9,19.9,20.7,21.5,22.3,22.6,23,23,23,21.5,21.1
1964,19.5,20.2,21.2,21.1,22.2,22.7,23.1,23.2,23.3,22.7,22.1,20.6
1965,19,19.7,20.7,20.1,22.1,22.3,23,23.2,23.1,22.9,22.7,21
1966,20.4,20.3,21.1,20.9,22.3,22.7,23.1,23.6,22.5,22.1,21.1,21.1
1967,20.1,19.4,19.4,20.4,21.9,22.4,22.8,22.6,22.7,22.2,22.1,20.5
1968,19.3,18.9,19.1,19.1,21.4,21.9,22.2,22.6,22.3,22.2,21.9,20.8
1969,19.2,18.7,20.3,20.9,22.2,22.4,22,22.1,22.5,22.1,21.8,20.7
1970,18.8,18.5,19.1,20.1,21.2,22.1,22.5,22,22,22.5,21.6,21.1
1971,19.6,19.8,20,20,20.9,22.1,21.8,22.2,22.1,21.2,21,20.2
1972,18.8,18.7,19.5,20.8,21.7,22.9,22.9,23,22.6,22.4,22,20.7
1973,19.7,19.7,19.9,19.7,22.4,22.7,22.7,22.9,22.3,22.6,21.3,20.6
1974,20,20.2,20.3,20.3,21.2,22.2,22,22.1,22.3,22.3,21.4,20.6
1975,19.4,18.9,19.2,19.5,20.4,21.8,21.9,22.4,21.7,21.5,20.4,20.1
1976,18.3,18.9,18.9,19.4,20.4,20.5,22,22,23,22.9,20.9,19.7
1977,19.2,19.4,19.4,20.4,20.3,21.2,20.4,22,21.8,21.2,20.8,20.3
1978,19.8,20.8,20.8,20.8,21.5,22.3,22.8,22.6,21.9,21.8,22.4,21.3
1979,19.4,20.3,20.2,21.3,21.5,23.5,22.8,22.5,22.6,22.7,21.8,19.9
1980,20.5,21,20,20.7,23.4,23.5,24.3,24.7,23.4,22.8,22.1,21.9
1981,21.4,20.2,21.7,21.1,23.1,23.1,23.2,22.8,24,22.1,21.9,20.5
1982,20,19.8,19.3,20.7,23.1,22.3,22.1,22.5,22.7,22.3,20.7,19.6
1983,19,19.6,21.3,21.4,22.9,23.4,23,23.3,23.2,22.7,21.5,20.4
1984,19,19.1,19.9,20.7,20.8,21.7,21.6,21.7,21.7,21,20.2,19.1
1985,17.6,19,19.2,19.5,20.7,22,22.1,22.7,22,21,21.3,19
1986,17.9,17.6,19.2,20.3,20.4,21.8,21.9,22.2,22.3,21.7,21.1,20.2
1987,19,19.1,19.5,20.9,22,21.7,22.5,22.9,22.7,22.6,22.3,20.5
1988,18.6,19.3,18.9,20.7,21.8,23.1,22.9,22.4,22,21.5,20.8,19.3
1989,18.7,18.7,18.3,19.7,20.3,20.5,21.6,21.5,21.7,21.1,20.9,19.1
1990,18.7,19,18.7,19.7,20.8,21.9,21.7,22.3,22.1,22.1,21.4,19.8
1991,19,20,19.6,19.9,21.2,21.8,22.8,22.6,22.7,22,21.4,20.9
1992,19.3,19.9,20.2,21.4,21.6,22.2,22.8,22.2,22.1,22.8,22,21
1993,19.9,20,19.9,20.5,22.2,22.4,22.1,22.4,21.9,21.5,21.5,20.1
1994,19.2,19.3,19.7,20.2,21.5,21.8,22.2,22.3,22.4,21.9,21.5,20.6
1995,19.2,19.5,18.6,20.3,21.7,21.8,22.8,23.1,23.4,21.4,21.3,20.6
1996,19.9,18.9,19.9,19.8,21.5,21.6,22.6,22.2,22.3,21.8,21.9,19.8
1997,19.4,18.7,19.7,21.1,22.1,23.1,22.3,22.8,23.3,22.9,21.8,22.9
1998,19.8,20.5,20.5,21,22.2,23.5,23.6,23.6,23.1,22,22.8,21.6
1999,19,18.2,19.3,20.1,22.7,22.9,22.6,23.5,23.3,22.9,22.5,20.8
2000,19.4,19.3,19,20.7,21.3,22.2,22.5,22.9,22.6,22.4,21.8,19.9
2001,19.1,19.4,20.2,20.5,21.7,21.5,22.4,23.3,23.6,22.7,21.6,20.9
2002,19.7,19,20.4,20.9,21.8,22.8,23,22.4,23.4,21.6,21.6,21.9
2003,20.3,20,20.9,21.3,22.2,23.2,23.3,23.3,24,21.9,21.8,21.2
2004,19.2,19.3,19.7,20.1,20.6,22.5,22.6,23.1,22.7,22,21.1,20.4
2005,18.7,18.2,20.6,21.3,21.9,22.8,23,23,23.1,21.8,21.5,19.4
2006,18.4,18.8,20,20.2,22.1,22.6,22.2,22.5,23,22.6,21.9,20.6
2007,19.3,20.2,20.6,20.5,22.4,22.9,22.7,22.7,22.5,21.9,21.1,19.9
2008,18.7,19.2,19.5,19.9,21.6,22.2,22.5,23,22.2,21.6,21.1,20
2009,19.7,19.4,19.3,20.3,21.1,22.5,23.3,23.4,23.2,23.2,21.3,21.4
