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Results by year

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

Year Number of Results
1967 1
1969 1
1975 1
1978 1
1979 1
1980 1
1981 7
1982 2
1983 5
1984 2
1985 1
1986 2
1987 1
1988 7
1989 1
1990 3
1991 7
1992 7
1993 5
1994 6
1995 6
1996 4
1997 7
1998 7
1999 9
2000 20
2001 11
2002 15
2003 15
2004 14
2005 11
2006 16
2007 12
2008 24
2009 25
2010 17
2011 20
2012 27
2013 25
2014 20
2015 27
2016 46
2017 36
2018 22
2019 32
2020 2
Text availability
Article attribute
Article type
Publication date

Search Results

479 results
Results by year
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