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

Year Number of Results
1978 1
1983 1
1985 1
1986 1
1987 12
1988 19
1989 20
1990 21
1991 20
1992 26
1993 17
1994 11
1995 26
1996 27
1997 31
1998 39
1999 33
2000 31
2001 37
2002 34
2003 31
2004 53
2005 39
2006 32
2007 58
2008 59
2009 31
2010 41
2011 38
2012 50
2013 40
2014 79
2015 74
2016 89
2017 77
2018 83
2019 77
2020 49
Text availability
Article attribute
Article type
Publication date

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