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   2019 (1 publications)    2018 (262 publications)    2017 (4736 publications)
   2016 (5838 publications)    2015 (6251 publications)    2014 (5946 publications)
   2013 (5068 publications)    2012 (5162 publications)    2011 (4810 publications)
   2010 (5133 publications)    2009 (4987 publications)    2008 (5191 publications)
   2007 (5413 publications)    2006 (5600 publications)    2005 (5704 publications)
   2004 (5185 publications)    2003 (4945 publications)    2002 (4676 publications)
   2001 (4204 publications)    2000 (3828 publications)    1999 (3426 publications)
   1998 (891 publications)    1997 (680 publications)    1996 (623 publications)
   1995 (497 publications)    1994 (457 publications)    1993 (401 publications)
   1992 (360 publications)    1991 (314 publications)    1990 (292 publications)
   1989 (236 publications)    1988 (203 publications)    1987 (190 publications)
   1986 (180 publications)    1985 (152 publications)    1984 (98 publications)
   1983 (121 publications)    1982 (92 publications)    1981 (76 publications)
   1980 (69 publications)    1979 (54 publications)    1978 (55 publications)
   1977 (56 publications)    1976 (36 publications)    1975 (38 publications)
   1974 (20 publications)    1973 (31 publications)    1972 (27 publications)
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