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Results by year

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

Year Number of Results
1967 1
1968 1
1976 1
1977 1
1978 6
1979 3
1980 1
1982 6
1983 10
1984 8
1985 8
1986 14
1987 11
1988 27
1989 29
1990 22
1991 20
1992 22
1993 40
1994 26
1995 27
1996 25
1997 32
1998 26
1999 15
2000 17
2001 19
2002 15
2003 12
2004 14
2005 20
2006 23
2007 15
2008 17
2009 13
2010 9
2011 14
2012 10
2013 5
2014 10
2015 5
2017 4
2018 5
2019 3
2020 3
2021 6
Text availability
Article attribute
Article type
Publication date

Search Results

608 results
Results by year
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608 results
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