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

Year Number of Results
1816 1
1829 1
1831 1
1951 1
1955 1
1960 2
1961 1
1962 1
1971 1
1976 1
1986 1
1987 3
1988 2
1989 1
1990 1
1996 1
1998 1
1999 1
2000 1
2001 1
2002 3
2003 1
2004 6
2005 7
2006 4
2007 4
2008 13
2009 6
2010 1
2011 5
2012 15
2013 14
2014 8
2015 14
2016 20
2017 13
2018 16
2019 21
2020 5
Text availability
Article attribute
Article type
Publication date

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179 results
Results by year
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