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Results by year

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

Year Number of Results
1967 1
1973 5
1974 1
1975 4
1976 3
1977 4
1978 2
1979 2
1981 9
1982 1
1983 8
1984 2
1985 6
1986 2
1987 4
1988 1
1989 6
1990 3
1991 3
1992 4
1993 9
1994 5
1995 3
1996 4
1997 4
1998 1
1999 13
2000 5
2001 7
2002 15
2003 12
2004 21
2005 32
2006 36
2007 26
2008 40
2009 45
2010 52
2011 75
2012 99
2013 112
2014 95
2015 110
2016 117
2017 145
2018 132
2019 156
2020 157
Text availability
Article attribute
Article type
Publication date

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