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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1984 2
1985 6
1986 37
1987 67
1988 140
1989 134
1990 122
1991 141
1992 118
1993 96
1994 106
1995 84
1996 64
1997 70
1998 68
1999 51
2000 41
2001 49
2002 45
2003 21
2004 24
2005 37
2006 34
2007 16
2008 25
2009 17
2010 7
2011 11
2012 4
2013 3
2014 8
2015 4
2016 3
2017 3
2018 3
2019 1
2020 0
Text availability
Article attribute
Article type
Publication date

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1,640 results
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