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

Year Number of Results
1979 40
1980 47
1981 56
1982 41
1983 30
1984 40
1985 55
1986 60
1987 61
1988 58
1989 53
1990 72
1991 87
1992 91
1993 101
1994 84
1995 93
1996 91
1997 96
1998 94
1999 99
2000 79
2001 118
2002 112
2003 124
2004 102
2005 108
2006 249
2007 323
2008 343
2009 454
2010 407
2011 443
2012 454
2013 548
2014 531
2015 566
2016 485
2017 472
2018 652
2019 441
2020 105
Text availability
Article attribute
Article type
Publication date

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6,391 results
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