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Results by year

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

Year Number of Results
1981 1
1982 1
1983 8
1984 4
1985 8
1986 4
1987 1
1988 8
1989 5
1990 3
1991 1
1992 4
1993 4
1994 12
1995 6
1996 9
1997 5
1998 11
1999 11
2000 14
2001 10
2002 11
2003 9
2004 10
2005 12
2006 12
2007 18
2008 7
2009 14
2010 13
2011 20
2012 17
2013 15
2014 11
2015 10
2016 8
2017 6
2018 5
2019 4
2020 0
Text availability
Article attribute
Article type
Publication date

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305 results
Results by year
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