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Results by year

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

Year Number of Results
1976 1
2007 5
2008 6
2009 5
2010 10
2011 6
2012 8
2013 11
2014 12
2015 13
2016 18
2017 17
2018 23
2019 21
2020 18
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Publication date

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