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