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Results by year

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

Year Number of Results
1975 2
1976 3
1977 8
1978 15
1979 3
1980 1
1984 3
1985 3
1986 1
1987 2
1988 6
1990 2
1991 3
1992 3
1993 2
1994 9
1995 4
1996 8
1997 10
1998 11
1999 22
2000 9
2001 16
2002 20
2003 29
2004 23
2005 37
2006 40
2007 56
2008 49
2009 71
2010 78
2011 88
2012 97
2013 117
2014 103
2015 152
2016 150
2017 145
2018 186
2019 226
2020 50
Text availability
Article attribute
Article type
Publication date

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1,690 results
Results by year
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