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Results by year

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

Year Number of Results
1950 1
1952 1
1956 1
1959 1
1964 2
1965 3
1967 2
1968 1
1969 1
1970 2
1971 1
1974 2
1975 2
1976 2
1978 1
1979 4
1980 3
1981 3
1982 1
1983 5
1984 13
1985 12
1986 8
1987 12
1988 7
1989 12
1990 16
1991 17
1992 13
1993 17
1994 19
1995 23
1996 23
1997 29
1998 34
1999 45
2000 45
2001 41
2002 67
2003 72
2004 106
2005 125
2006 142
2007 156
2008 165
2009 205
2010 249
2011 297
2012 319
2013 377
2014 428
2015 487
2016 511
2017 543
2018 606
2019 687
2020 134
Text availability
Article attribute
Article type
Publication date

Search Results

5,441 results
Results by year
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