1901,20,21.4,24.2,24.2,24.5,22.9,21.3,20.6,21.5,23,22.1,20.1
1902,20.9,21.7,25.1,25.8,25.8,23.4,21.7,21.7,21.5,22.1,22.6,20.5
1903,20.5,21.3,21.7,23.9,23.8,22.1,21,20.3,20.2,21,20.8,19.4
1904,20.3,23.5,25.4,25.2,23.9,22.8,20.4,20.6,20.7,20.9,20,20.1
1905,19.8,19,23,24,25.3,22.9,21.5,21.9,20.8,21.2,20.9,18.4
1906,20.8,21.8,23.5,24.6,24.7,23.4,21.1,20.5,20.7,20.8,20.5,20.3
1907,21.6,22.2,24.5,24.2,23.5,22.9,21.1,21.2,21.5,21.3,19.3,20
1908,20.5,21.5,24,24,24.7,23.6,21.2,21.4,20.7,21.3,20.5,19.8
1909,21.1,22.5,24.7,24.2,24.7,23.4,21.4,20.4,20,21.1,21.8,18.4
1910,20.2,20.8,23,23.6,24.1,22.7,21.4,21.2,20.2,20.7,20.9,19.4
1911,21.1,21.7,22.9,23.4,22.7,22.7,20.8,21.7,21.7,21,19.2,18.7
1912,19.8,20.6,21.9,23.9,24.5,21.2,21,21.5,21.1,20.8,19.5,18.5
1913,19.7,20.8,22.4,22.9,23.7,21.2,20.8,21.4,19.9,20.6,20.6,18.9
1914,21.1,20.9,22,23.2,23.4,21.6,20.7,20.5,20.3,21.4,19.8,17.8
1915,19.3,21.4,21.6,23.1,24.8,23.5,21.5,21.4,20.2,21.3,20.6,20.1
1916,21.5,22.5,24.3,24.1,24.3,23.1,20.2,19.9,19.6,20.2,19.2,19
1917,19.1,20.6,21.9,22.4,23.9,20.3,20.2,20.1,19.3,19.5,20.5,17.7
1918,18.5,20.9,20,23,23.4,20.8,20.2,19.8,19.3,20.8,20.2,18.6
1919,16.7,20.6,21.4,21.9,23.8,22.4,20.4,20.8,19.7,20.7,19.9,18.5
1920,17.6,21.1,23.1,24.4,21.9,21,21,20.4,19.8,20.4,19.8,18.1
1921,17.9,19.5,22,23.2,22.8,22.4,20.3,20.5,19.7,19.3,19.4,18.3
1922,18.9,21.1,22.5,23.9,23.7,20.9,20.7,20.7,19.8,20,19.9,18.5
1923,18.8,19.7,22,23.3,24.9,22.3,20.7,20.7,20.6,19.8,19.6,19
1924,18.2,20.2,23.6,23.9,22.7,21.6,20.6,20.8,19.3,19.8,18.5,18.1
1925,17.8,19.5,20.9,22.6,21.6,21,20.4,20.5,19.4,20.9,18.8,17.1
1926,18,20.6,22.7,22.1,22.9,21,20,19.9,19.6,20.4,19.9,20.1
1927,18.9,20.1,22.8,24,25.5,20.8,20.4,20.4,20.1,19.4,19,18.7
1928,18,21.3,22.9,23.8,24,23.7,21.2,20.7,20.2,20.8,18.8,19.1
1929,19.5,22.8,23.4,26.7,23.7,22,19.3,19.7,19.5,19.2,19.8,16.3
1930,17.7,20,22.5,22.3,23.3,21.4,20.4,21.7,20.3,20.8,19.3,18.8
1931,17.6,20.2,22.5,22.8,22.4,23.6,21.1,20.6,19.3,21.2,20.1,18.8
1932,19.8,21.6,22.2,23.5,23.9,23.6,21.1,20.8,20.1,20.1,18.2,18.4
1933,16.4,20.4,21.8,25,26.3,22.9,22.2,19.3,19.7,19.5,18.6,17.8
1934,17.7,19,21.8,21.2,21.5,23,20.7,19.9,19.7,19.8,19.8,19.1
1935,18.5,19.7,21.6,23.4,23.2,20.8,19.7,19.4,19.6,19,20.7,18.8
1936,19.9,21.9,22.8,22.3,22.5,23.2,20.7,20,19.2,20.2,21,19.5
1937,21.9,21.6,21.3,22.2,21.4,20.7,19.8,19.7,19.8,19.9,20,18.5
1938,20.3,19.1,21.5,22.5,22.2,20.6,19.7,20,18.8,19.9,20.1,18.9
1939,19,21.4,21.1,21.7,22.2,20.6,19.9,20,18.9,19.5,18.2,18.1
1940,17.3,20.9,20.9,23.8,21.6,21.7,19.9,20.6,20.4,21.4,19.5,18.1
1941,17.4,20.3,21.3,22.9,22.5,21,20,20.8,19,20.3,18.8,18
1942,18.4,20.8,22,24,24.3,22,20.6,19.4,19.9,21.3,18.8,19.4
1943,19.7,20.5,24,24.9,23.5,20,22,20.5,20.8,20.2,18.3,18.5
1944,18.8,21.7,21.8,24.9,22.6,22.2,21.5,19.7,19,18.8,20.6,18.2
1945,19.9,21.8,23.7,24.8,23.1,23.9,21.2,20.3,20.4,19.5,20.3,19.6
1946,19,20.1,24.2,24,25.5,22.3,23,20.8,21.6,20.9,20.4,19
1947,20.2,22,23.6,23.6,21.8,23.6,22.4,20.3,19.9,20.4,20,18.5
1948,17.8,21.6,24.5,23,24,23.6,20.6,21.2,20.3,20.4,20.7,20.9
1949,19.9,21.5,23.3,24.9,23.3,22.2,21.3,21.7,19.8,21.3,19.4,19.5
1950,19.4,19.9,21.9,23.2,24.5,22.2,20,22.1,20.5,20.2,19.8,19.2
1951,20.5,21.4,22.3,25.3,22.5,22.9,20.7,21.1,20.2,21.3,22.3,21.5
1952,22.5,22.5,25.4,23,22.7,20.3,20.7,21.2,19,20,20.7,19.8
1953,20.7,23.2,24.2,25.9,26,23.9,22.2,21.4,19.8,20.5,19.3,19.2
1954,20.5,20.7,25.2,23,22.4,22,20.8,21.6,19.5,20,20.2,19.5
1955,20.9,22,23.9,27.1,24.8,24.1,19,20.2,18.4,19.5,20.8,18.8
1956,18.5,22.9,24.4,25.2,21.3,20.1,19.7,21.1,18.7,21.5,19.9,19.1
1957,21.3,23.3,24.7,25.1,24.7,22.3,22.4,22.4,20.4,22.5,19.7,19.8
1958,16.6,21.2,25.8,26.3,22.1,22.3,20.6,22,20.5,20.9,19.4,17.3
1959,19.3,23,24.4,22.7,23.3,21.9,20.6,21.4,21.4,20.4,20.3,20.2
1960,20.8,22.1,24.1,24.8,24.4,25.2,21.7,22,19.8,22.8,21,19.6
1961,19.9,22.7,23.1,25.9,25.5,21.1,20.4,21.5,20.5,21.7,20.2,19.8
1962,20.4,23.5,24.3,21.8,23.9,23.8,22.1,21.9,20.4,21.5,20.7,18.5
1963,21.8,22,23.5,25.6,23,23,20.3,20.9,20,18.6,20.2,19.3
1964,18.8,23.8,23.6,25.9,23.6,21.2,21.1,22.5,20.9,20.4,19.5,18.5
1965,18.7,20.1,24.4,23.5,24.3,23.1,20.6,19.6,21.2,19.5,21.5,19.4
1966,18.7,20.6,20.4,23.3,24.6,23.4,21.6,21.2,20.8,20.3,19.4,19
1967,18.7,21.3,22.4,23.6,24.4,23.2,21.5,20.7,18.9,19.8,20.3,20
1968,19.9,20.4,22.5,22.5,23.3,22.4,20.8,21.5,20.7,21.5,21.6,18.8
1969,20.5,23,23.8,25.8,26,25.6,22.5,19.9,19.7,22.3,21.1,20.6
1970,20,20.1,25.2,27.4,24.2,21.9,20.8,21.5,20.5,23,20.4,20.8
1971,21.4,22.1,23.2,23.6,24.4,21.7,20.7,20.4,20.6,21.5,20.6,20.2
1972,19.8,21.4,21.7,25.7,23.8,22.1,20.3,20.6,20.6,21.6,21.3,19.2
1973,21.4,22.7,25.6,24.4,24,22.3,20.1,19.9,21,19.5,20.4,18
1974,19.6,20.5,22.3,22.5,24.4,20.7,19.9,21.4,20.2,19.5,18.9,19.9
1975,17.5,21.6,24,25.6,22.5,20.8,20.1,20.1,19.1,19.9,20.8,18
1976,18.2,19.6,23.8,22.6,22.6,22.6,20,19.7,20.4,20.3,18,19.5
1977,20.8,20.9,23.9,22,23,21.9,21.1,21.7,21.5,21.6,18.8,18.3
1978,20.7,19.3,21.8,24.7,24.5,20.6,20.6,21.4,19.7,18.7,20.7,20.2
1979,20.3,20,23.6,24.5,24.6,23.3,22.1,20.3,18,23,19.6,18
1980,19.6,21.7,24.8,23.4,24,23.8,22.7,21.1,20.4,22,20.9,19.5
1981,17.7,20.6,23.2,23.1,23.8,21.5,21.1,21.4,21.3,21.5,20.8,20.1
1982,22.1,22,24.3,26.8,23.8,26.4,22.3,22.5,22.1,21.9,21.9,21.3
1983,18,20.4,23.8,27.7,27.8,26.3,21.5,21.8,20.8,21.5,21.5,21.1
1984,19.7,20.9,24.8,28.1,22.8,22.2,19.8,20.2,18.4,23.1,21.3,20.5
1985,20.1,21.7,23.9,21.5,24.4,21.9,21,21.7,21.8,22.4,22.3,19.9
1986,19.2,22.1,23.7,25.1,23.6,21.4,21.6,21.8,22.6,22,21.2,20.7
1987,22.1,22.3,23.8,24.1,24.4,23.2,22,22.6,23.4,22,22.1,22.7
1988,20.1,22.3,21.9,25,25.3,22.6,22.1,22.3,22,22.2,24.5,20
1989,20.9,21,23.9,24.3,25.6,23.7,22.3,21.6,20.5,21.7,22.4,19.1
1990,20.3,20.9,22.7,23.2,24.7,23.6,21.4,21.8,21.1,21.6,23,22.1
1991,21.5,21.2,27.2,25.8,25.6,23.5,21.7,21.6,19.7,19.8,19.9,19.1
1992,18,18.9,25.3,23.4,22.4,24.1,22,20.6,20.7,20.7,19.4,20.2
1993,19.7,22.5,24.1,24.8,24,22.3,20.8,21.4,20.7,21.3,19.7,21.2
1994,20.4,21.7,25.1,25.2,24.9,22.8,22.8,19.9,20.7,21.5,22.1,20.8
1995,20.4,21.4,23.8,26.2,25.8,25.4,22.2,20.9,21.6,22.9,21.4,20.3
1996,21.1,22.9,23.7,25.2,26.2,22.6,23.4,21.8,23.1,22.5,21.8,21.1
1997,19.7,22.9,23.8,23.5,23.3,24.6,23.3,23.7,22.6,23,22.8,20.4
1998,21.1,23.7,25.9,29.2,26.5,27.3,24,23.2,22,20.7,22.9,21.1
1999,21,22.7,24,27.2,25.8,25,21.3,22.9,20.6,20.8,19.9,18.7
2000,20.5,22.5,24.4,26,24.2,22.6,22.3,21.9,21.4,22.1,21.4,19.4
2001,20.7,22.3,23.4,25.5,24.5,23.5,22.8,21.3,20.8,21.6,20.2,19.4
2002,21.1,21.6,25,26.6,25.9,23.9,21.7,21.8,20.8,22.1,20.7,19.2
2003,20,21.8,24.7,26.1,27.7,23.6,22.2,22.9,21.3,21.8,21.8,19.3
2004,19.8,22.5,25.3,25.3,24.1,22.7,21.6,22.2,21.1,23.7,22.2,20.6
2005,21.6,22,24.9,27.3,25.3,26.2,23.7,21.5,22.2,22.3,22.5,20.2
2006,22,23.8,25.7,26.5,25,23.1,22.3,22,22.3,23,21.2,20.2
2007,21.2,21.5,23.8,26.2,24.5,23.6,22.6,22.5,21.1,20.6,21.4,20.7
2008,20.8,24.3,24,25.9,25.7,22.7,22,22.3,20.7,21.5,21,19.4
2009,21.6,23.4,24.4,26.2,25.2,24.9,23.5,23.2,21.6,23.7,21,19.1
