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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 4
1981 9
1982 8
1983 11
1984 8
1985 22
1986 15
1987 16
1988 24
1989 17
1990 30
1991 35
1992 32
1993 43
1994 61
1995 68
1996 69
1997 68
1998 73
1999 100
2000 118
2001 119
2002 191
2003 230
2004 240
2005 311
2006 431
2007 495
2008 582
2009 701
2010 865
2011 1027
2012 1140
2013 1448
2014 1531
2015 1806
2016 1903
2017 2087
2018 2315
2019 2671
2020 611
Text availability
Article attribute
Article type
Publication date

Search Results

19,373 results
Results by year

Citations

19,373 articles found by citation matching

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