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Results by year

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

Year Number of Results
1962 1
1975 1
1978 2
1980 2
1981 2
1982 3
1984 1
1986 1
1987 4
1988 1
1989 1
1990 1
1991 1
1992 3
1993 4
1994 2
1995 1
1996 1
1997 4
1998 5
1999 8
2000 6
2001 11
2002 6
2003 10
2004 22
2005 16
2006 31
2007 26
2008 53
2009 20
2010 33
2011 38
2012 19
2013 18
2014 18
2015 21
2016 8
2017 14
2018 14
2019 10
2020 1
Text availability
Article attribute
Article type
Publication date

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398 results
Results by year
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