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Results by year

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

Year Number of Results
1952 1
1953 3
1954 4
1955 1
1956 6
1957 4
1958 3
1959 8
1960 2
1961 5
1962 3
1965 3
1966 20
1967 45
1968 81
1969 64
1970 54
1971 64
1972 93
1973 83
1974 91
1975 84
1976 78
1977 79
1978 69
1979 102
1980 104
1981 104
1982 132
1983 94
1984 110
1985 131
1986 101
1987 140
1988 152
1989 139
1990 143
1991 129
1992 145
1993 169
1994 151
1995 164
1996 163
1997 232
1998 242
1999 248
2000 259
2001 281
2002 291
2003 357
2004 421
2005 523
2006 662
2007 640
2008 758
2009 875
2010 960
2011 1083
2012 1247
2013 1432
2014 1345
2015 1360
2016 1316
2017 1269
2018 1141
2019 484
2020 1
Text availability
Article attribute
Article type
Publication date

Search Results

18,361 results
Results by year
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