1901	.593
1902	.409
1903	.363
1904	.342
1905	.546
1906	.464
1907	.565
1908	.539
1909	.484
1910	.510
1911	.520
1912	.480
1913	.583
1914	.481
1915	.592
1916	.595
1917	.572
1918	.447
1919	.343
1920	.405
1921	.331
1922	.373
1923	.325
1924	.364
1925	.444
1926	.384
1927	.331
1928	.283
1929	.464
1930	.338
1931	.429
1932	.506
1933	.395
1934	.376
1935	.418
1936	.351
1937	.399
1938	.300
1939	.298
1940	.327
1941	.279
1942	.278
1943	.416
1944	.399
1945	.299
1946	.448
1947	.403
1948	.429
1949	.526
1950	.591
1951	.474
1952	.565
1953	.539
1954	.487
1955	.500
1956	.461
1957	.500
1958	.448
1959	.416
1960	.383
1961	.305
1962	.503
1963	.537
1964	.568
1965	.528
1966	.537
1967	.506
1968	.469
1969	.389
1970	.453
1971	.414
1972	.378
1973	.438
1974	.494
1975	.531
1976	.623
1977	.623
1978	.556
1979	.519
1980	.562
1981	.551
1982	.549
1983	.556
1984	.500
1985	.463
1986	.534
1987	.494
1988	.404
1989	.414
1990	.475
1991	.481
1992	.432
1993	.599
1994	.470
1995 	.479
1996 	.414
1997 	.420
1998	.463
1999	.475
2000	.401
2001	.531
2002	.497
2003	.531
2004	.531
2005	.543
2006 	.525
2007 	.549
2008	.568
2009	.574
2010	.599
2011	.630