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

Year Number of Results
1991 1
1992 6
1993 10
1994 7
1995 8
1996 14
1997 11
1998 15
1999 18
2000 24
2001 34
2002 34
2003 34
2004 23
2005 33
2006 26
2007 42
2008 53
2009 56
2010 56
2011 64
2012 73
2013 47
2014 50
2015 50
2016 52
2017 49
2018 26
2019 22
2020 0
Text availability
Article attribute
Article type
Publication date

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851 results
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