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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 2
1984 3
1985 10
1986 4
1987 8
1988 4
1989 8
1990 3
1991 11
1992 5
1993 2
1994 4
1995 3
1996 5
1997 2
1999 1
2000 2
2001 1
2004 3
2005 8
2006 12
2007 15
2008 23
2009 23
2010 18
2011 18
2012 19
2013 23
2014 14
2015 19
2016 16
2017 11
2018 7
2019 10
2020 5
2021 2
2022 4
Text availability
Article attribute
Article type
Publication date

Search Results

309 results
Results by year
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309 results