1901,21.3,23.3,23,27.2,30.1,34,33.3,32.5,32.2,28.8,24.4,20.6
1902,22.2,23.6,24.5,27.7,31,34.5,33.7,33.4,32.8,30.8,26.9,21.8
1903,20.9,23.5,24.9,27.2,30.1,33.8,32.9,31.8,32.2,30.7,26.1,21.4
1904,20.8,22.1,23.9,26.8,29.9,33.8,33.3,33.1,32.9,30.3,26.5,22.2
1905,21.4,21.9,24.4,27.4,30,34.1,33.7,32.6,32.6,29.9,25.5,22.6
1906,21.8,22,25.4,27.1,30,34.2,32.9,32,32.8,30.5,26.2,21.1
1907,20.2,21.4,23.7,26.4,29.5,32.9,33,32.4,32.9,29.8,25,22
1908,21.5,22.6,24.9,27.4,31.1,34.2,33.3,32.2,33.2,31,26.8,23.1
1909,21,22.6,25.5,27.6,31,33.2,33,31.9,32.3,30.5,26.2,22.6
1910,20.7,22.8,24.6,27.1,30.4,33.7,32.5,32.1,33.4,31,27.4,22.4
1911,20,22.5,23.8,27.8,30.1,33.3,33,32.5,33.5,31.4,26.3,23.1
1912,21.9,24.4,25.8,27.8,31.5,34.7,33,32.1,32.9,29.9,26.4,22.4
1913,21.8,23.4,23.9,27.1,28.5,34.3,33.3,32.5,32.9,30.4,26.3,23
1914,20.4,21.8,24.7,27.4,31.2,33.6,33.1,32.6,32.7,30.6,26.3,21.9
1915,21.2,21.1,22.8,25.7,29.8,34.8,34.2,32.8,33.4,30,25.7,22.9
1916,20.4,21,22.4,25.4,29.6,34.2,33.5,32.7,32.3,30.7,26.3,23.3
1917,21.1,19.9,23.1,25,28.8,32.6,33.5,32.5,32.9,28.3,24.7,22.3
1918,22.2,20.7,22,24.9,29.1,34,33.1,31.6,32.4,29,24.8,22.3
1919,21.8,24,25.5,25.8,29.6,34,33,33.1,32.8,30.8,26.6,21.9
1920,20.6,19.7,22.8,26.6,28.6,33.1,32.3,31.2,31.7,29.2,24.2,22.2
1921,21.9,21.2,22.8,26,29.6,34.1,32.9,32.7,32.5,30.2,24.6,21.3
1922,20.4,22.8,23.3,27,30.3,32.5,32.8,32,31.6,29.9,25.9,21.3
1923,20.6,22.4,24.9,26.9,31.1,33.6,33.7,32.8,33.9,31.5,26,24
1924,22.5,21.2,25.6,27.4,31.6,33.2,33.3,33.5,33.3,28.7,24.9,20.9
1925,20.4,21.3,23.4,26.5,30.3,33.6,33.2,31.9,32.2,29.8,25.9,24.1
1926,23.2,23.8,24.8,28.9,31.1,35.2,34.4,33.1,33.9,31.4,24.1,22.5
1927,21.3,21.7,26.7,27.5,32.3,33.7,33.6,32,32.5,30.9,26.9,22.7
1928,19.4,21.3,26.4,27.6,30.6,35.1,34.3,32.4,32.1,30.5,24.5,21.1
1929,22.9,22.6,24.3,27.5,28,34.3,33.1,32.1,31.9,30.2,25.1,22.6
1930,19.5,20.3,22.7,26,29,33.5,32.5,32.7,34.4,31.2,28,22.2
1931,22.3,23.1,23.2,27.9,31.1,32.8,33.7,33.9,32.9,31.6,26.1,21.8
1932,22.5,22.4,22.9,28.2,29.4,34,33.3,31.5,32.3,30.3,25.4,21.5
1933,23.5,24.1,24.8,27.4,30.5,33.6,32.9,32.1,31.7,28.4,23.3,19.1
1934,20.8,22.2,24.3,28.7,30.6,34.9,34.1,32.8,34.2,31.3,26.8,24.3
1935,22.4,21.5,25.1,29,29.7,35,33.4,32.5,33.9,29.6,26.7,25.9
1936,24.4,23.6,26,28.6,30.4,34.4,33.3,32.5,33.9,30.7,25.8,23
1937,21.8,24.7,24.3,26.4,29.9,35.4,34.3,32.6,32.8,30.4,27.7,23.9
1938,21.6,24.5,25.3,28.2,31.5,35.6,33,32.1,32.1,30,26.5,21.9
1939,21.9,22,24.5,27.8,30.8,34.8,33.6,32.4,33.3,30.5,26.3,23.2
1940,21.3,22.9,24.8,25.7,29.8,35.2,33.6,32.6,33,30.2,25.4,22
1941,22.1,23.6,24.3,26.5,30.7,33.5,33.1,32.4,32.3,32.5,25.6,21
1942,19.7,21.8,24.5,28.7,32,34.5,32.6,31.6,33,28.1,25.6,21.5
1943,20,22.5,24.5,29.2,33.1,34.8,33.8,31.6,32.8,31.1,25.1,20.6
1944,20.7,23.3,24.3,28.7,32.7,35.2,34,32.5,32.7,30.3,26.7,20.4
1945,21.5,22.4,25.3,30.9,32.2,34.4,33.7,32.2,33.1,30.5,26.7,24.2
1946,19.5,21.9,25,27.9,31.6,33.8,33.3,31.9,32.9,30.5,26.5,21.3
1947,20.5,22.1,27.2,29.7,30.3,33.9,33.7,32,33.3,30.8,26.2,22.1
1948,20.5,23.4,26.3,26.4,31.1,33.8,33.2,32.1,33.1,30.3,26.3,21.3
1949,20.7,22.6,23.1,27.5,30.3,34.5,33.4,32.3,33,30.3,25.3,24.3
1950,19.6,22.9,26.5,25,31.3,35.8,32.8,31.1,32.4,30.4,27.1,21
1951,20.2,22,25.3,28.5,30.6,34.9,34,32.3,31.9,28.8,25.8,20.6
1952,18.6,21.9,23.7,25.2,30.1,36,33.6,31.7,31.1,30.5,27.2,22.2
1953,23.2,21.6,23.1,28.7,32.2,34,33.6,32.3,33.4,30.4,27.5,21.9
1954,20.5,21,24.3,25.9,33.2,33.8,33,31.8,33,31.1,26.3,21.5
1955,22.1,24.3,25.4,28,32.5,34,33.9,32.7,33,30.4,28.2,22.3
1956,22,21.5,23.7,25.8,31.9,34.6,33.6,32.4,32.8,30.4,26.6,19.3
1957,20,22.6,25.5,26.8,29.6,34.8,33.5,32.8,33.4,29.4,25.4,21.1
1958,22,25.3,26,27.7,32.8,35.2,33.4,32.4,33.7,30.5,25.3,21.4
1959,22,22.1,24.7,29.5,31.3,35.4,33.9,31.7,33.5,30.5,25.1,21.3
1960,21.5,25.5,24.7,25.2,32,33.8,33.2,33.2,32.8,31.7,27,19.5
1961,20.6,23.1,26.2,29.4,32.5,29.8,33.6,32.9,33.3,29.8,26,23.2
1962,22.7,22.6,25.4,27.1,31,34.4,33.9,32.8,32.5,31.5,27,22.6
1963,23.2,23.9,25.4,27.8,30.8,34.5,34.3,32.7,33.3,29.9,27.1,20.5
1964,21.4,24.5,26.7,27.2,33.1,35,34,32.3,30.1,29.3,25.9,21.6
1965,18.8,22.9,25.1,27.5,32.1,33.2,33.3,32.4,32.3,29.8,25.9,21.5
1966,21.8,24.8,24.8,29.6,31.6,35,33.7,33.7,32.3,29.1,24.5,23.3
1967,22.1,22.8,24.8,24.5,32.1,34.8,33.3,32.2,32.4,30,25.8,19.5
1968,19.7,21.5,23.4,26.7,29.6,33.8,32.7,31.9,33.2,29.8,25.5,23
1969,23.2,26.4,27.4,25.9,32.1,33.8,33.3,31.8,32.7,29.7,27.1,23.6
1970,23,25.5,25.5,28.7,31.5,35.6,33,32.3,33.4,31,26.6,21.6
1971,22.3,22.7,23.4,26.7,28,31.5,33.2,31.7,32.6,31.7,24.6,22.4
1972,21,22.1,22.9,26.9,29.4,33.2,33.5,32.3,32,31.5,26.6,20.5
1973,21.3,22.2,25.5,28.8,34,34.9,33.3,32.2,33,30.1,26.8,19.8
1974,20.8,21.8,21.6,24.9,30.5,35.6,32.7,31.8,32.9,29.2,26.2,22.5
1975,22.2,22.9,24.1,25.5,28.6,35,32.6,31.9,30.9,30.7,24.4,23.6
1976,19.7,21,23,27,28.7,34.4,33.6,32.8,33,28.7,27.7,21.2
1977,22.4,23.7,27.3,28,29.5,35,33.3,31.8,32.9,29.8,26,24.2
1978,21.5,24.2,25,27.2,31.1,34.1,32.3,32.5,32.9,30.4,26.6,23.2
1979,22.4,24.7,24.4,29.3,32.7,35.9,33.4,32.2,31.8,29.4,26.1,23.6
1980,21,23.4,25.1,29.6,29.3,35.2,32.8,32.2,33,30.1,25.7,20.4
1981,21.8,22,26.7,28,31.7,33.4,33.7,32.5,32.5,30.7,26.8,23.4
1982,21.2,21.8,24.8,27.6,30,33.6,33.5,32.2,32.9,29.5,25.7,20.9
1983,23.1,24,27.8,29.3,32.8,36,34.2,33.3,33.4,32,27.5,22.3
1984,20.8,23.6,23.9,28.7,30.1,26.7,32.9,32.8,32.6,30.8,25.2,20.7
1985,19.9,25.1,23.9,26.6,29.3,34.4,32.9,32.3,32.8,31.2,26.2,22.1
1986,20.2,22,23.4,29.3,32.3,33.5,32.6,32.5,32.7,30.8,25.1,21.8
1987,21.5,23.6,25.6,32.3,34.6,38.2,35.1,33.8,33.4,30.6,27.3,24
1988,20.9,23.1,26.5,28.2,31.5,30.2,33.7,32.7,33.1,30.3,26,21.9
1989,21.4,23,24.9,26.9,32.8,35.6,33.3,33.1,32.7,31.5,25.8,24.5
1990,19.9,24.9,28.7,26.9,30.9,33.3,33.8,32.9,34.2,32,26.1,22.3
1991,22.7,22.4,23.8,28.5,31.8,34.4,33.3,32.5,32.9,30.1,26.8,24.1
1992,23.1,23.8,24.5,27.5,32.6,33.9,33.2,31.7,33.5,29,26.2,22.4
1993,21.8,22.8,25.6,24.6,31.6,34.8,33.9,32.8,32.6,30.2,25.9,22.4
1994,20.4,23.1,24,28.1,30.7,34.2,32.6,32.1,31.3,29.9,27.9,22.8
1995,20.8,23.6,23.9,27.2,31.6,35.2,34.7,32.6,32.7,31,28.1,22.5
1996,23.5,24.5,24.6,28.4,31.9,34.8,34.2,33,33.1,31.1,26.4,22.7
1997,22.2,26.4,26,28.2,32,35,34,32.5,33.2,31.5,28.1,23
1998,21.9,26.3,28.8,29.3,30.6,35.5,33.3,32.4,33,31.3,27.5,22.3
1999,21,21.8,24.4,28.8,32.1,35.5,33.2,32.7,33.5,30.6,27.1,22.7
2000,21.1,23.8,26.8,29.7,31.7,33.3,33.4,32.7,32.8,29.1,26.1,22.9
2001,22.6,23.8,27.5,32.5,30.9,34.5,33.6,32.9,34.2,31.4,27.1,25
2002,23.1,24,25.2,27.8,31,34.5,33,32.9,33.7,31.8,27.1,23.9
2003,21.3,23.1,27.2,29.3,32.4,34.3,33.8,32.9,32.7,29.9,26.5,22.9
2004,22.9,24.3,26.1,28.6,31.8,34.4,34,33.6,33.4,31.2,27.2,20.3
2005,22,21.4,26.9,28.5,34.9,35.2,33.3,33.3,33.3,31.1,27.5,25.8
2006,21.7,22.8,26.7,29.2,30.2,35.2,34.6,33,33.6,31.4,29.2,22.6
2007,23.5,25,26.2,28.3,32,33.7,33.5,32.2,29.7,31,27.3,23
2008,21.9,25.2,28.4,31,32,34.7,33.7,32.6,32.3,30,26.9,22.3
2009,20.4,22.2,24.9,28.7,31.8,31.4,34.2,34.1,33.7,31.4,27.6,24.6
