1901,20,23.7,25.9,26.9,29.6,32.7,32.8,32.6,32.1,28.1,24.1,21.8
1902,19.7,24.1,26,27.4,30.7,33.2,32.2,33.2,33.1,28.1,22.1,19
1903,18.9,19.3,22.4,26,29.7,33,32.6,33.6,31.4,26.7,23.1,21.6
1904,21.1,21.9,24.2,25.7,29.2,32.7,32,33.4,31.3,28,22.7,20.2
1905,19.8,20.4,23.4,26.2,30.3,33.6,33.1,33.1,32.2,28.1,24.7,20.6
1906,20.1,22.6,24.2,26.1,31.4,33.7,33,32.4,31.3,27.5,24.5,22.9
1907,21.3,22,24.2,26.3,30,32.9,32.2,31.4,31.6,27.8,22.3,20.2
1908,20.2,22.8,25.6,27.8,30.2,33.4,32.7,32.7,31.9,27.8,23.7,21.1
1909,20.3,23.3,26.4,26.5,30.4,33,32.8,32.4,31.5,28,24.5,21.4
1910,19.9,22.5,22.8,27,29.7,32.7,33.1,32.4,31.2,26.7,23.1,19.8
1911,20.1,20.1,23.8,26.6,29.4,32.9,32.7,32.7,32,27.7,23.6,20.8
1912,20.5,23,24.8,26.9,29.9,32.6,32.1,31.1,31.9,27.8,24.7,21
1913,20.4,21.5,23.7,27.7,29.1,32.1,32.1,32.1,32.2,27.9,23.6,21
1914,21.4,22.1,25.5,25.8,30.5,32.7,32.7,32.9,31.6,27.9,25.3,22
1915,21.5,23,25.4,27.3,30.8,33.7,33.5,33.4,32.6,29.5,25.1,22.7
1916,20.9,23.4,26.7,27.7,31.5,34.7,33.3,32.8,32.3,28.3,25.4,22.3
1917,21.6,22.8,26.2,27.6,30,33,32.8,33.2,32.5,28.6,26.1,21.9
1918,20.3,22,24.8,26.6,30.6,33.6,33.8,32.6,32.5,29.7,25.3,21.5
1919,21.9,23.6,26.2,27.2,30.3,32.9,32.9,32.6,32.7,29.1,25.1,21.3
1920,20.5,21.1,24.9,27.1,30,33.3,32.8,32.8,31.6,28.1,23.9,21
1921,20.4,21.8,24.5,28.1,29.9,33.8,33.6,33.9,31.9,28,24.3,21.6
1922,20.8,22.5,25.4,27.8,30.1,33.5,33.3,33.1,33.2,29.2,25.7,21.1
1923,21.5,22.7,25.4,26.9,30.7,34.4,32.7,33,32.6,28.3,24.9,21.6
1924,20.5,23.4,25.8,27.9,30.2,33.7,32.7,32.9,32.1,28,23.8,21.5
1925,19.3,21.8,26.4,26.6,31.1,33.5,33.2,32.9,32.6,28.8,25.1,22.2
1926,20.6,22.2,24.9,27,31.2,33.5,32.2,32.2,31.5,28.5,24.2,21.6
1927,20.9,21.4,25.5,26.5,31.6,33.4,33.4,33,32.5,29.5,25.2,22.3
1928,22.1,22,26,28.2,32.2,33.6,33.1,33.2,32.8,28.1,24.2,22.6
1929,20.8,22.8,25,27.5,32.6,33.4,32.4,32.9,33.1,27.7,25.5,21.2
1930,20.5,22.7,25.6,27.7,31.7,34.1,33.6,33.7,33,28.7,24.1,23.5
1931,22.1,22.5,26.2,27.4,30.1,33.3,33.2,33.5,33,29,24.3,21.5
1932,20.4,22.7,25.7,27.3,29.4,34.4,32.9,33.3,32.2,29.5,25.1,21.2
1933,21,23.1,25.6,25.8,31.4,34.2,32.3,32.4,31.6,27.6,26.5,22.8
1934,21.1,21.3,25.8,27.8,31.1,33.8,32.7,33.1,32.2,29.2,25.9,21.3
1935,21.5,22.6,26.2,26.6,31.3,34.2,32.5,33.2,31.7,29.3,23.8,21.7
1936,21.6,24.2,26.4,28.4,31.8,33.1,33.5,33.3,31.5,29.5,26.2,21.4
1937,19.5,22.5,25.8,27.3,31.1,32.8,32.8,32.9,33.6,29.3,25.6,22.8
1938,21.3,22.5,23.5,27.8,31,32.1,33.1,34.2,32.8,28.5,24.6,23
1939,21.4,22.6,25.1,27.1,32.1,33.7,33,32.4,33.2,30,24.9,22.8
1940,21.8,23.5,25,27.4,31.6,34.4,33.1,32.4,32.5,29.5,24.4,22.1
1941,22.3,24.6,26.2,27.7,30.8,33.5,33.4,32.3,31.7,28.2,24.8,20.2
1942,20.8,23.7,26.2,27.3,30.6,33.9,32.1,32.1,31.1,28.4,25,22.1
1943,21.2,20.8,23.1,26,30,31.4,33.1,30.8,32.5,27.9,24.3,22.5
1944,21.5,22.3,26.5,27.2,30.5,33.8,32.6,32.5,31.8,28.4,24.1,21.3
1945,21.6,21.4,23.9,27.1,30.6,32.7,33,33.8,32.3,27.4,24.3,21.5
1946,21,22,24.4,27.1,30.6,33.1,33.2,33,32.8,28.1,24,22.2
1947,21.4,22.9,25.6,27.9,30.6,33.4,33.1,32.7,32,28.3,24.1,22.1
1948,20.5,22,23.7,26.5,30.1,33.3,32.2,32.3,31.1,26.2,23.2,20.7
1949,19.2,19.6,23.6,24.4,30.7,32.4,31.9,32,30.8,26.5,23,19.9
1950,20.3,21.6,25.2,28.1,31.7,33.8,33.2,33.8,33.6,28.5,25.3,22.4
1951,21.7,22.4,25.4,27.1,30.7,33.5,33.2,32.5,32.7,28.7,23.6,20.4
1952,19.8,22.9,25,28,30.9,33,32,34,33.4,28.8,24.6,22.8
1953,22.2,22.7,26.1,26.8,30.8,33.9,33.7,33,31.7,28.7,24.4,19.8
1954,21.9,23.5,26.1,27.1,31.3,33.9,34.5,34.1,32.7,28.3,25,22
1955,20.4,23,24.4,27.9,31.1,34.6,31.6,33.2,32.2,28.5,24.5,21.9
1956,19.9,23.5,24.3,26.2,30.1,33.5,33.7,33.5,32.8,28,24.1,21.5
1957,20.3,20.7,23.5,25.9,29.6,33.3,33,31.9,32.4,29.2,25.1,21.8
1958,20.7,22,27,28.6,30.5,33.6,33.6,33,31.9,28.2,24.1,22.8
1959,19.4,20.4,23.1,27.2,31.5,33.4,31.9,30.7,31.4,27.8,23.3,21.1
1960,22,23.5,25.1,27.6,30.9,33.6,33.3,32.3,32.7,28.2,25,22
1961,21.6,21.4,23.8,25.6,30.8,33.5,32.8,32.1,31,27.6,23,20.4
1962,20.4,22.9,26.1,27.3,30.8,33.8,33.4,32.5,33.2,28.4,23.7,21.8
1963,22.6,24.1,24.5,27.5,29.4,33.7,33.3,33.7,32.6,28.9,23.7,21.4
1964,19.1,21.8,25.2,27.2,29.7,33.1,32.1,31.8,31.7,26.5,24,20
1965,20.5,22.5,25.8,25.9,30.2,33.7,32.9,32.9,32.4,28.3,23.8,21.4
1966,22,21.7,25.2,27.5,30.7,34.1,32.7,33.7,32.7,28.1,24.5,22
1967,21,21.4,23.5,26.4,29.7,32.4,32.4,31.4,31.7,27.8,23.4,20.7
1968,20.5,21.2,25.2,25.4,28.9,33,33,32.7,31.5,27.9,24.1,22
1969,20.1,22.5,25.2,26.6,30.6,33.6,31.6,33.3,32.1,28.7,24.1,23.1
1970,21.2,23.3,25.8,28.4,31.2,32.8,32.3,33.1,31.8,27.3,24.3,20.4
1971,21.2,21.9,24.9,25.7,30.8,31.6,31.7,32.3,31.3,27.1,23.3,20
1972,20.1,21.9,24.1,26.5,29.8,32.8,32.1,32.4,31.6,28.2,23.8,19.5
1973,19.8,23.9,24.7,27.6,30.5,33.1,32.4,32.2,31.7,28.1,23.3,21.4
1974,19,21.8,24.4,28.3,30.6,33.4,33.7,32.9,32.5,28.1,24.9,20.3
1975,19.7,21.7,28.1,26.7,31.4,33.1,32.4,31.4,32.6,27.8,23.8,21
1976,19.7,21.6,23.7,26.8,30,33.3,31.8,32.1,32.6,28.6,23.6,22.7
1977,20.1,23,25.6,26.9,30.9,34,34.1,33.8,32,27.4,23.2,21.3
1978,20.2,22.9,26,28.8,31.8,33.3,31,31.8,32.1,28.4,22.5,22.6
1979,20.7,24.8,25.8,28.6,30.3,34,32.5,31.5,32.1,28.2,25.5,20.7
1980,21.1,21.7,25.6,27.9,31.1,34.7,33.2,32.6,31.3,28.3,24.8,21.6
1981,20.6,22.3,29,27.8,30.8,33.5,33.6,32.1,32.9,28.4,23.9,22.8
1982,21.6,21,23.6,27.7,29.8,33,32,32.5,32.5,28.1,22.3,20
1983,18.5,21.2,22.1,26.4,30.2,33.4,32.9,33.3,32.7,27.3,24.8,22.3
1984,20.8,23.2,25.4,28.3,30.6,32.8,32,31.3,31.7,28,24.1,20.9
1985,21.5,22.2,25.7,28,31.2,33.4,33.2,34,32.6,27.7,24.6,21.6
1986,20.6,22.7,25.1,26.2,30,32,33.8,33.9,32.2,28.4,23.8,20.4
1987,20.7,24,24.7,27.5,30.9,33.5,32.3,32.8,32.4,28.1,24.6,22.3
1988,20.8,22.1,25.6,27.7,32.3,33.9,35.1,33.6,34,28.6,24,22.5
1989,18.7,20.6,28.3,27,31.8,33,33.4,33.3,31.9,27.7,24.2,20.8
1990,20.1,21.4,23.8,28,32,33.8,32.5,31.7,32,28.4,24.7,23
1991,19.6,22.4,24.8,29.2,31.1,34.1,32.2,32,32.1,29,24.4,21.4
1992,20.7,20.5,23,27.3,29,32.4,32.4,32.2,31.1,27.7,24.5,20.7
1993,19.6,20.7,24.3,27.3,32.5,35.8,31.8,33.1,32.6,29.2,24.7,22.8
1994,22,23.2,23.9,29.2,31.5,33.4,32.7,34.1,31.7,29.9,25,20.2
1995,21.3,22.4,24,28.2,32,35.2,34.4,34,31.7,28.3,25.1,20.6
1996,20.3,23.7,24.1,27.3,32,33.2,34,34,34.8,28.8,24,22.2
1997,20.9,21.2,23.4,28,32,35.2,35.4,33.6,33,29.1,24.1,21.8
1998,20,23.1,24.4,28.2,32.8,35.5,36.1,35.8,32.3,28.6,25.2,24.2
1999,21.2,24.9,25.1,29.2,34,35.3,35,33.9,34.1,28.9,25,22.5
2000,20.5,22.6,25.3,29,32.1,34.3,35.3,35.2,33.3,27.9,23.3,21.4
2001,20.1,22.4,26.9,28.7,32.3,34.5,34.5,34.8,33.2,28.9,24.4,22.8
2002,19.5,23.5,25.9,28.3,31.3,33.9,34.6,34.7,33.3,29.1,24.6,21.3
2003,21.3,23.4,30,28.5,32.5,35.7,34.6,34.2,32.7,29.3,24.8,22.1
2004,23,23.4,25.8,28.6,32.3,35,35.1,33.4,32.5,29,24.8,20.3
2005,19.7,23.2,25.4,28.4,30.5,35,34.1,34.4,33.5,29.9,24.2,22.5
2006,21.9,23.3,26.1,28.2,32.1,35.4,33.8,34.9,33.1,28.8,23.8,20
2007,19.8,23.3,25.4,29.8,33.3,35.5,34.6,34.5,33.8,29,26.1,22.2
2008,20.1,22.2,27.2,29.6,32.8,35.7,33.3,33.2,34.5,28.5,24,21.9
2009,21.6,24.6,25.1,28.8,31.9,35.4,34.7,33.9,32.3,28.2,25.2,22
