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

Year Number of Results
1972 1
1974 1
1976 1
1979 2
1984 1
1986 1
1988 1
1989 2
1990 3
1991 1
1993 3
1994 3
1995 2
1996 2
1997 2
1998 2
1999 2
2000 3
2001 5
2002 3
2003 4
2004 3
2005 5
2006 5
2007 9
2008 8
2009 9
2010 10
2011 9
2012 21
2013 19
2014 29
2015 13
2016 20
2017 9
2018 11
2019 6
2020 12
2021 6
Text availability
Article attribute
Article type
Publication date

Search Results

219 results
Results by year
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219 results
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