| 2021
(254 publications)
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2020
(4468 publications)
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2019
(5591 publications)
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| 2018
(6004 publications)
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2017
(6289 publications)
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2016
(6868 publications)
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| 2015
(7321 publications)
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2014
(7053 publications)
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2013
(5562 publications)
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| 2012
(5305 publications)
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2011
(4886 publications)
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2010
(5200 publications)
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| 2009
(5030 publications)
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2008
(5226 publications)
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2007
(5446 publications)
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| 2006
(5637 publications)
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2005
(5719 publications)
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2004
(5199 publications)
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| 2003
(4957 publications)
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2002
(4699 publications)
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2001
(4215 publications)
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| 2000
(3832 publications)
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1999
(3437 publications)
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1998
(899 publications)
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| 1997
(687 publications)
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1996
(629 publications)
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1995
(504 publications)
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| 1994
(465 publications)
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1993
(405 publications)
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1992
(362 publications)
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| 1991
(316 publications)
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1990
(294 publications)
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1989
(240 publications)
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| 1988
(204 publications)
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1987
(190 publications)
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1986
(181 publications)
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| 1985
(152 publications)
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1984
(98 publications)
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1983
(121 publications)
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| 1982
(92 publications)
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1981
(76 publications)
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1980
(69 publications)
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| 1979
(54 publications)
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1978
(55 publications)
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1977
(56 publications)
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| 1976
(36 publications)
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1975
(38 publications)
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1974
(20 publications)
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| 1973
(31 publications)
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1972
(27 publications)
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1971
(26 publications)
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| 1970
(20 publications)
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1969
(15 publications)
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1968
(16 publications)
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| 1967
(6 publications)
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1966
(7 publications)
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1965
(3 publications)
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| 1964
(7 publications)
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1963
(3 publications)
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1962
(8 publications)
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| 1961
(1 publications)
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1960
(2 publications)
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1958
(1 publications)
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| 0
(6 publications)
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