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Results by year

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

Year Number of Results
1974 1
1975 1
1978 3
1980 1
1981 1
1982 2
1983 3
1984 1
1985 2
1986 3
1987 5
1988 5
1989 6
1990 1
1991 6
1992 7
1993 9
1994 17
1995 21
1996 24
1997 28
1998 25
1999 27
2000 35
2001 48
2002 52
2003 69
2004 82
2005 100
2006 96
2007 122
2008 132
2009 140
2010 192
2011 201
2012 271
2013 296
2014 343
2015 401
2016 406
2017 455
2018 544
2019 629
2020 781
2021 167
Text availability
Article attribute
Article type
Publication date

Search Results

5,154 results
Results by year
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