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Results by year

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

Year Number of Results
1972 1
1991 3
1992 1
1993 4
1994 7
1995 7
1996 6
1997 11
1998 5
1999 10
2000 11
2001 18
2002 10
2003 23
2004 12
2005 8
2006 6
2007 8
2008 4
2009 3
2010 4
2011 4
2012 4
2013 2
2014 1
2015 1
2016 1
2019 2
2020 0
Text availability
Article attribute
Article type
Publication date

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171 results
Results by year
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