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Results by year

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

Year Number of Results
1971 1
1977 1
1990 1
1992 3
1993 4
1996 1
1998 2
1999 1
2000 3
2001 1
2002 4
2003 6
2004 7
2005 7
2006 8
2007 10
2008 8
2009 19
2010 26
2011 26
2012 46
2013 43
2014 50
2015 52
2016 48
2017 46
2018 57
2019 73
2020 12
Text availability
Article attribute
Article type
Publication date

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496 results
Results by year
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