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

Year Number of Results
1961 1
1976 1
1979 1
1981 1
1994 1
1996 1
1997 2
1998 2
1999 1
2000 5
2001 6
2002 4
2003 5
2004 9
2005 8
2006 12
2007 16
2008 5
2009 12
2010 7
2011 15
2012 14
2013 23
2014 18
2015 12
2016 13
2017 17
2018 20
2019 10
2020 2
Text availability
Article attribute
Article type
Publication date

Search Results

208 results
Results by year
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