1901,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1902,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1903,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1904,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1905,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1906,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1907,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1908,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1909,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1910,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1911,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1912,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1913,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1914,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1915,20.6,20.9,20.9,20.8,20.5,19.6,19,18.8,18.9,19.4,19.1,19.8
1916,20.6,20.9,20.9,20.9,20.4,19.6,18.9,18.6,18.9,19.2,19,19.6
1917,20.5,20.7,20.8,20.8,20.3,19.4,18.8,18.6,18.8,19.2,19,19.7
1918,20.6,20.8,20.7,20.7,20.1,19.4,18.8,18.7,18.8,19.3,19,19.7
1919,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1920,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1921,20.6,20.8,20.7,20.7,20.2,19.4,18.8,18.5,18.8,19.1,18.9,19.7
1922,20.6,20.9,20.9,20.8,20.3,19.5,18.8,18.6,18.8,19.2,19,19.7
1923,20.4,20.9,20.9,20.7,20.1,19.6,18.4,18.5,18.9,19.1,19,19.5
1924,20.9,20.9,21.1,20.9,20.4,19.4,18.7,18.6,18.5,19,18.8,19.6
1925,20.3,20.5,20.5,20.7,20.3,19.3,18.7,18.5,18.8,19.3,18.9,19.7
1926,20.7,21,21.1,21.1,20.5,19.7,18.8,18.6,18.8,19.2,19.1,19.5
1927,20.4,20.8,20.9,20.8,20.3,19.5,18.6,18.7,18.8,19.1,19.1,19.9
1928,20.6,21,20.8,20.9,20.3,19.5,18.7,18.6,18.8,19.2,19,19.6
1929,20.7,21,20.8,20.9,20.2,19.4,18.5,18.6,18.9,19.2,19.1,19.8
1930,20.2,20.9,20.9,20.9,20.2,19.3,18.7,18.3,18.6,19.2,19.3,19.8
1931,20.8,21.2,21.2,21.1,20.5,19.7,19,18.5,19,19.2,18.9,19.9
1932,21,21.1,20.9,21.3,20.5,19.6,18.7,18.8,18.8,19.2,19.1,19.8
1933,21.1,21,21,20.8,20.4,19.5,19.1,18.2,18.6,18.8,18.9,19.5
1934,20.3,20.5,20.5,20.6,19.9,19.6,18.6,18.4,19,18.9,18.9,19.6
1935,20.4,20.6,21,20.5,20.1,19.4,18.6,18.5,18.3,19.2,18.9,19.8
1936,20.6,20.7,21.1,20.7,20.3,19.2,18.5,18.1,18.5,19,19.2,19.4
1937,20.5,20.9,20.9,20.5,20,19.5,18.8,18.6,18.7,18.9,18.9,19.5
1938,20.5,20.9,20.8,20.8,20.2,19.3,18.7,18.5,18.5,19.1,18.8,19.5
1939,20.3,20.9,20.9,20.6,20,19.5,18.5,18.6,18.8,19,19,19.7
1940,20,20.4,20.1,20.8,20,19.2,18.7,18.6,18.5,19,18.8,19
1941,20.8,21.3,21,20.7,20.5,19.5,18.5,18.7,19.2,19.3,19.2,19.9
1942,20.6,20.9,20.9,20.6,19.8,18.9,18.3,18.1,18.7,19,18.8,19.5
1943,22.1,20.4,22.3,21.9,19.8,18.8,19.3,17.8,18.4,20.1,18.7,20.7
1944,21.7,21.8,21.6,21.9,20.8,19.9,20.5,19.6,20,19.8,19.6,20.2
1945,21.5,22.1,21.8,20.4,19.7,19.8,19,19.3,19.7,19.9,19.9,19.9
1946,20.3,21.3,21.5,21.6,20.7,20,19.2,18.9,19.2,19.5,19.5,19.8
1947,20.8,20.9,20.9,20.9,20.2,19.3,18.6,18.5,18.8,19.2,19,19.9
1948,20.8,20.8,20.8,20.9,21,19.7,18.9,19.2,19.4,18.8,19.2,19.5
1949,20.4,21.1,21.6,21,19.9,19.1,18.1,18.1,18,18.5,19,18.5
1950,19.3,19.6,19.3,19.3,19.5,17.7,17.3,17.6,18.9,18.8,19,19.6
1951,19.4,20.5,20.2,20.4,20.5,20.6,19.5,19,18.9,19.4,19.1,19.7
1952,20.3,20.6,20.8,20.3,20.5,18.9,18.2,18.1,18.2,18.7,18.2,19.2
1953,19.7,20.3,20.1,20.2,19.8,19,17.7,19.6,17.5,18.4,18.9,18.5
1954,20.4,20.4,20.6,20.5,19.3,18.4,17.9,17.6,18.1,18.4,18.7,19.4
1955,19.7,20.7,20.3,20.1,19.6,18.5,18.1,17.7,18.2,18.4,18.2,18.6
1956,19.7,20.6,20.7,20.5,19.4,18.8,18.2,18.3,18.2,18.4,18,19
1957,19.9,20.2,20.2,20.1,21.1,20.5,20,19.5,19.1,19.9,19.3,20.2
1958,19.4,20.4,20.4,20.5,20.1,19.4,18.5,18.2,18.1,18.5,18.2,19
1959,20.5,20,20.4,20.3,19.7,18.3,18.1,18.2,18,18.5,18.1,19
1960,19.7,20.1,19.6,20,19.2,17.7,18,17.5,18,17.8,18.2,19.3
1961,20.7,20.5,20,20.6,20.1,19.1,18.1,17.9,18.1,19,19,19.7
1962,20.9,20.8,20.5,20.6,20.3,18.8,18.6,18.3,18.7,19,18.9,19.8
1963,20.9,21.4,21.2,21,20.3,19,19.4,19.3,19,19.1,18.3,19.1
1964,19.4,20.2,19.9,19.9,19.2,18.5,17.5,17.8,17.8,18.1,18.8,18.8
1965,21.9,20.2,20.5,20.8,20.5,19.8,19.2,18.3,18.5,19.2,18.9,20.1
1966,20.9,20.1,20.3,20.7,20.4,19,18.7,18.9,19,19.7,19.3,19.7
1967,20.3,21.4,21.7,20.4,20.4,18.8,18.3,17.8,18.2,18.9,17.7,19
1968,20.1,20.7,20.1,19.9,18.6,18.2,18.9,18.2,19.3,18.4,18.3,18.9
1969,19.8,20.9,21.6,21.9,21.4,20.8,18.9,18.6,19.2,19.5,19.3,19.2
1970,21,21.5,21,20.4,20.3,19.3,18.5,18.5,18.8,19.4,18.7,19.5
1971,20,20.1,19.7,19.7,19,18.7,18,18.1,18.2,18.3,18.1,19.2
1972,20.4,20.6,20.2,21.2,21.3,20.4,20.3,20.3,19.2,20.1,19.2,20.7
1973,20.7,20.7,21,20.3,19.7,19.2,17.7,17.5,18.9,18.3,18.1,18
1974,19.9,20,20,20.2,19.9,19.6,17.9,18.2,18,18.2,18.6,19
1975,19.8,19.9,20.5,20.1,19.4,18.6,17.3,17.5,17.9,18.4,17.9,18.5
1976,19.4,20,20.5,20.1,20.1,20,19.3,18.4,17.7,18.6,18.9,19.6
1977,19.6,20.1,20.4,20,19.8,19.5,18.5,18.6,18.9,19.2,19,20.2
1978,20.1,20.8,20.8,20.6,20.5,19.6,18.5,17.7,18.4,19.5,19.7,20.2
1979,20.8,20.9,21.1,21.2,20.9,20,18.8,19.1,19.8,19.1,18.3,18.6
1980,20.1,20.4,20.1,20.2,19.8,19.1,18.9,17.6,17.7,19,18.4,19
1981,20.1,20.6,21,21.1,19.7,19.6,19.1,18.4,18.8,18.8,19.2,20.1
1982,21.5,22.5,22.2,21.9,20.8,20.4,20.3,19.6,20.1,21.1,21.2,21.3
1983,21.6,22.3,22.5,22.1,21.8,21.6,20.9,19.7,18.9,18.8,18.8,19.2
1984,19.8,20.7,21.5,20.6,20,19.5,18.1,18.3,18.6,18.8,18.8,19.6
1985,19.9,20,20.5,20.2,19.1,19.4,17.5,18.5,18.5,18.7,19,19
1986,19.8,20.9,20.9,20.5,19.7,18.9,18.8,18.9,18.8,19.5,19.5,20.2
1987,21,21,21.7,21.3,20.5,19.8,19.5,19.4,19.1,20,19.7,20.1
1988,21.1,21.4,20.7,21.5,21.1,19.1,19.1,18.4,19.1,19.4,19.1,20.1
1989,20.5,20.2,20.4,20.4,19.9,18.7,18.3,18.2,18.6,19.4,19.8,19.5
1990,21.1,21.2,21.5,21.3,21.1,20.7,19.4,18.8,18.7,19.2,18.9,19.8
1991,20.6,20.9,22,21.6,21.7,21,20,19.5,19.2,19.2,20.1,20.6
1992,21,21,21.4,21.4,21.2,19.8,19,18.8,18.5,19.1,19.1,20
1993,21.4,20.9,20.9,21.4,21.2,20.8,20.1,19.1,19.3,19.5,19.6,20.4
1994,20.6,20.9,20.5,20.4,20.5,19.7,18.9,18.2,18.8,19.8,20.8,20.6
1995,20.8,20.8,21.2,22.2,21.5,19.6,19.3,19,20.8,20.8,20.8,21.1
1996,20.8,21.8,22,21.4,20.8,20.4,19.8,20.3,19.4,19.4,20.1,20.7
1997,20.5,21.1,21.7,22.3,21.6,21.6,22.3,19.8,20.2,20.9,20,21.4
1998,22.4,22.9,23.1,22.5,22.5,22.5,21,20,18.9,20.6,19.8,20.6
1999,21.7,21.2,21.5,21.5,20.2,19.4,17.9,19,19.8,18.9,19.1,19.6
2000,20.3,20.5,20.7,20.9,19.9,18.9,18.5,18.7,18.5,19.7,18.8,19.7
2001,21.8,22.2,20.3,20.6,19.4,18.2,18.4,18.5,18.1,18.7,18.6,19.3
2002,20.3,21.1,21.3,21.5,20.9,19,18.6,18.2,18.6,19.9,20.4,20.6
2003,21,21.1,21.1,20.6,19.9,18.8,18.6,18.3,18.7,20,19,19.6
2004,21,21.8,22.1,20.6,19.4,18.4,18.1,18,18.3,20,18.7,20.6
2005,20.4,21.4,21.2,20.9,19.6,18.6,18.5,18.1,18,18.6,17.5,18.4
2006,20.3,20.2,21.2,20.1,19.7,19.8,19.6,18.7,18.8,19.9,19.1,19.7
2007,21.2,21,21.4,20.6,19.4,17.9,18.1,17.2,17.6,18,18.1,18.3
2008,20.4,20.5,20.8,20.1,19.3,18.9,18.9,18.5,18.9,19.1,18.8,19.4
2009,20.6,20.8,20.7,21.8,21.6,21,20.4,20.7,20,20.2,19.8,20.5
