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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 2
1973 1
1974 1
1978 1
1981 3
1982 1
1983 2
1984 2
1985 2
1986 6
1987 4
1988 7
1989 6
1990 2
1991 6
1992 12
1993 13
1994 11
1995 14
1996 9
1997 4
1998 8
1999 5
2000 16
2001 15
2002 11
2003 9
2004 10
2005 14
2006 12
2007 13
2008 12
2009 21
2010 17
2011 16
2012 19
2013 24
2014 30
2015 22
2016 26
2017 28
2018 26
2019 30
2020 6
Text availability
Article attribute
Article type
Publication date

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461 results
Results by year
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