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

Year Number of Results
1971 1
1972 1
1983 1
1988 2
1992 2
1995 2
1996 2
1997 6
1998 6
1999 2
2000 7
2001 6
2002 1
2003 6
2004 14
2005 21
2006 28
2007 25
2008 25
2009 33
2010 46
2011 62
2012 81
2013 77
2014 94
2015 106
2016 87
2017 83
2018 82
2019 85
2020 108
2021 48
Text availability
Article attribute
Article type
Publication date

Search Results

1,020 results
Results by year
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