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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 4
1969 1
1971 1
1972 1
1973 1
1974 2
1975 2
1976 1
1979 1
1980 2
1981 2
1982 1
1983 1
1986 2
1988 2
1989 1
1990 2
1991 5
1992 1
1993 4
1994 9
1995 5
1996 5
1997 1
1998 6
1999 2
2000 4
2001 8
2002 8
2003 5
2004 20
2005 29
2006 23
2007 14
2008 19
2009 18
2010 20
2011 17
2012 21
2013 21
2014 24
2015 28
2016 27
2017 31
2018 33
2019 32
2020 7
Text availability
Article attribute
Article type
Publication date

Search Results

431 results
Results by year
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