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Results by year

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

Year Number of Results
1958 1
1972 1
1973 1
1975 1
1978 2
1980 1
1981 1
1982 2
1984 2
1986 1
1987 3
1988 1
1989 3
1990 2
1991 1
1992 13
1993 6
1994 6
1995 7
1996 6
1997 12
1998 7
1999 10
2000 21
2001 21
2002 37
2003 36
2004 23
2005 40
2006 35
2007 46
2008 48
2009 55
2010 59
2011 62
2012 71
2013 72
2014 74
2015 79
2016 84
2017 56
2018 65
2019 37
2020 2
Text availability
Article attribute
Article type
Publication date

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982 results
Results by year
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