| 2019
(138 publications)
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2018
(5241 publications)
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2017
(5617 publications)
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| 2016
(6355 publications)
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2015
(6836 publications)
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2014
(6581 publications)
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| 2013
(5401 publications)
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2012
(5203 publications)
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2011
(4830 publications)
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| 2010
(5150 publications)
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2009
(4994 publications)
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2008
(5201 publications)
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| 2007
(5426 publications)
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2006
(5613 publications)
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2005
(5709 publications)
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| 2004
(5194 publications)
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2003
(4956 publications)
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2002
(4691 publications)
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| 2001
(4210 publications)
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2000
(3830 publications)
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1999
(3433 publications)
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| 1998
(894 publications)
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1997
(683 publications)
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1996
(626 publications)
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| 1995
(498 publications)
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1994
(459 publications)
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1993
(401 publications)
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| 1992
(361 publications)
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1991
(316 publications)
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1990
(293 publications)
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| 1989
(239 publications)
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1988
(203 publications)
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1987
(190 publications)
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| 1986
(180 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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