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Results by year

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

Year Number of Results
1964 1
1966 2
1968 1
1971 1
1972 2
1974 3
1977 1
1979 1
1980 2
1981 2
1982 2
1983 6
1984 8
1985 7
1986 7
1987 7
1988 1
1989 5
1990 2
1991 1
1992 6
1993 9
1994 4
1995 7
1996 6
1997 6
1998 5
1999 4
2000 9
2001 8
2002 2
2003 7
2004 9
2005 13
2006 10
2007 14
2008 15
2009 18
2010 12
2011 17
2012 13
2013 34
2014 27
2015 33
2016 33
2017 26
2018 21
2019 14
2020 6
Text availability
Article attribute
Article type
Publication date

Search Results

402 results
Results by year
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