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

Year Number of Results
1959 1
1979 3
1983 1
1984 2
1988 3
1990 3
1992 1
1993 4
1994 4
1995 3
1996 5
1997 7
1998 10
1999 14
2000 11
2001 19
2002 16
2003 17
2004 15
2005 27
2006 26
2007 32
2008 36
2009 44
2010 46
2011 72
2012 84
2013 86
2014 105
2015 121
2016 145
2017 144
2018 168
2019 195
2020 206
2021 96
Text availability
Article attribute
Article type
Publication date

Search Results

1,595 results
Results by year
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