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Results by year

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

Year Number of Results
1953 1
1965 1
1967 2
1968 1
1970 3
1973 1
1980 4
1981 1
1982 4
1983 4
1984 2
1985 6
1986 1
1987 2
1988 2
1989 2
1990 2
1991 2
1992 9
1993 7
1994 11
1995 3
1996 8
1997 11
1998 12
1999 10
2000 14
2001 12
2002 17
2003 15
2004 24
2005 27
2006 29
2007 43
2008 46
2009 63
2010 79
2011 64
2012 83
2013 109
2014 144
2015 137
2016 147
2017 131
2018 137
2019 160
2020 202
2021 248
2022 13
Text availability
Article attribute
Article type
Publication date

Search Results

1,801 results
Results by year
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1,801 results