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Results by year

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

Year Number of Results
1970 1
1974 1
1975 1
1978 1
1981 1
1982 2
1983 1
1984 3
1985 2
1986 3
1987 4
1988 1
1989 8
1990 7
1991 7
1992 6
1993 9
1994 8
1995 8
1996 8
1997 10
1998 8
1999 15
2000 12
2001 11
2002 17
2003 17
2004 16
2005 12
2006 15
2007 21
2008 16
2009 18
2010 19
2011 12
2012 15
2013 25
2014 30
2015 33
2016 24
2017 43
2018 48
2019 55
2020 9
Text availability
Article attribute
Article type
Publication date

Search Results

523 results
Results by year
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