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Results by year

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

Year Number of Results
1972 1
1973 3
1975 1
1977 1
1978 2
1979 2
1980 3
1982 2
1983 4
1984 2
1985 3
1986 3
1987 6
1988 6
1989 5
1990 13
1991 9
1992 13
1993 5
1994 13
1995 12
1996 8
1997 14
1998 11
1999 9
2000 5
2001 7
2002 3
2003 3
2004 4
2005 3
2006 5
2007 4
2008 6
2009 21
2010 14
2011 10
2012 6
2013 23
2014 17
2015 23
2016 20
2017 27
2018 23
2019 31
2020 10
Text availability
Article attribute
Article type
Publication date

Search Results

393 results
Results by year
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