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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
1968 1
1978 1
1980 1
1982 1
1984 2
1985 3
1987 3
1988 1
1989 2
1990 1
1991 4
1992 6
1993 4
1994 4
1995 6
1996 8
1997 4
1998 1
1999 5
2000 4
2001 5
2002 1
2003 5
2004 10
2005 14
2006 23
2007 24
2008 46
2009 39
2010 48
2011 61
2012 70
2013 75
2014 63
2015 70
2016 58
2017 46
2018 47
2019 38
2020 6
Text availability
Article attribute
Article type
Publication date

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704 results
Results by year
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