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Results by year

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

Year Number of Results
1968 2
1969 1
1987 2
1999 2
2002 7
2003 5
2004 15
2005 11
2006 14
2007 15
2008 12
2009 13
2010 8
2011 11
2012 7
2013 7
2014 17
2015 8
2016 16
2017 7
2018 9
2019 9
2020 3
Text availability
Article attribute
Article type
Publication date

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181 results
Results by year
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