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

Year Number of Results
1964 1
1980 1
1981 1
1982 2
1985 1
1986 2
1987 3
1988 9
1989 1
1990 2
1991 3
1992 2
1993 2
1994 3
1995 3
1997 2
1998 3
1999 2
2000 3
2001 13
2002 7
2003 17
2004 19
2005 32
2006 43
2007 41
2008 41
2009 53
2010 58
2011 53
2012 36
2013 41
2014 34
2015 38
2016 35
2017 43
2018 37
2019 40
2020 47
2021 85
2022 38
Text availability
Article attribute
Article type
Publication date

Search Results

816 results
Results by year
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816 results