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Results by year

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

Year Number of Results
1969 1
1972 2
1973 1
1976 1
1979 1
1980 1
1982 1
1984 2
1985 1
1987 1
1988 1
1989 3
1991 1
1992 1
1993 2
1994 2
1995 4
1996 2
1997 2
2000 6
2001 11
2002 10
2003 11
2004 17
2005 15
2006 22
2007 13
2008 23
2009 27
2010 35
2011 35
2012 41
2013 51
2014 49
2015 57
2016 84
2017 72
2018 63
2019 42
2020 4
Text availability
Article attribute
Article type
Publication date

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619 results
Results by year
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