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Results by year

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

Year Number of Results
1964 1
1965 1
1967 5
1968 7
1969 3
1970 6
1971 2
1972 5
1973 4
1974 12
1975 19
1976 12
1977 4
1978 19
1979 13
1980 10
1981 9
1982 10
1983 8
1984 13
1985 18
1986 18
1987 15
1988 7
1989 14
1990 22
1991 20
1992 20
1993 17
1994 22
1995 24
1996 16
1997 32
1998 29
1999 22
2000 32
2001 21
2002 32
2003 31
2004 46
2005 29
2006 35
2007 36
2008 48
2009 61
2010 67
2011 67
2012 84
2013 101
2014 114
2015 88
2016 56
2017 63
2018 55
2019 14
2020 2
Text availability
Article attribute
Article type
Publication date

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1,424 results
Results by year
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