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Results by year

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

Year Number of Results
1968 1
1984 2
1986 1
1987 3
1989 1
1990 1
1991 2
1992 3
1993 3
1994 3
1995 3
1996 5
1997 7
1998 13
1999 7
2000 6
2001 3
2002 2
2003 3
2004 3
2005 4
2006 7
2007 5
2008 2
2009 3
2010 4
2011 6
2012 11
2013 4
2014 6
2015 2
2016 1
2017 4
2018 5
2019 4
2020 1
Text availability
Article attribute
Article type
Publication date

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127 results
Results by year
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