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Results by year

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

Year Number of Results
1973 1
1979 1
1982 1
1984 1
1991 1
1993 1
1995 1
1996 4
1997 3
1998 4
1999 4
2000 14
2001 11
2002 12
2003 18
2004 31
2005 33
2006 50
2007 55
2008 45
2009 52
2010 61
2011 71
2012 89
2013 106
2014 106
2015 136
2016 113
2017 112
2018 120
2019 139
2020 28
Text availability
Article attribute
Article type
Publication date

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1,257 results
Results by year
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