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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
1969 1
1973 1
1976 3
1978 2
1983 1
1984 1
1985 1
1986 1
1987 2
1988 1
1989 1
1991 1
1992 2
1993 2
1994 7
1995 3
1996 1
1997 2
1998 1
1999 4
2001 2
2002 6
2003 1
2004 4
2005 4
2006 3
2007 6
2008 8
2009 6
2010 7
2011 9
2012 7
2013 11
2014 8
2015 14
2016 10
2017 18
2018 8
2019 10
2020 4
Text availability
Article attribute
Article type
Publication date

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164 results
Results by year
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