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Results by year

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

Year Number of Results
1978 1
1979 2
1980 1
1981 4
1982 2
1983 2
1984 2
1986 7
1987 2
1988 6
1989 3
1990 3
1991 5
1992 1
1993 6
1994 3
1995 5
1996 1
1997 5
1998 2
1999 3
2000 3
2001 3
2002 4
2003 8
2004 2
2005 3
2006 6
2007 8
2008 1
2009 4
2010 11
2011 19
2012 19
2013 17
2014 15
2015 19
2016 15
2017 13
2018 7
2019 10
2020 2
Text availability
Article attribute
Article type
Publication date

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237 results
Results by year
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