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Results by year

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

Year Number of Results
1979 3
1980 15
1981 12
1982 28
1983 24
1984 63
1985 46
1986 43
1987 37
1988 32
1989 33
1990 37
1991 56
1992 58
1993 55
1994 66
1995 56
1996 87
1997 101
1998 154
1999 156
2000 172
2001 168
2002 193
2003 256
2004 331
2005 374
2006 466
2007 478
2008 600
2009 747
2010 809
2011 824
2012 808
2013 811
2014 730
2015 690
2016 683
2017 516
2018 207
2019 54
2020 0
Text availability
Article attribute
Article type
Publication date

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10,039 results
Results by year
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