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Results by year

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

Year Number of Results
1962 1
1976 2
1979 4
1980 4
1981 4
1982 3
1983 7
1984 3
1985 8
1986 6
1987 25
1988 19
1989 17
1990 28
1991 17
1992 11
1993 20
1994 25
1995 27
1996 26
1997 28
1998 27
1999 23
2000 28
2001 43
2002 43
2003 45
2004 63
2005 64
2006 66
2007 62
2008 101
2009 80
2010 83
2011 97
2012 79
2013 119
2014 136
2015 152
2016 112
2017 106
2018 120
2019 136
2020 108
Text availability
Article attribute
Article type
Publication date

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