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Results by year

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

Year Number of Results
1956 1
1959 1
1960 1
1961 2
1962 6
1963 6
1964 5
1965 3
1966 2
1967 4
1968 7
1969 10
1970 6
1971 5
1972 7
1973 13
1974 10
1975 8
1976 15
1977 13
1978 18
1979 21
1980 24
1981 22
1982 30
1983 22
1984 29
1985 38
1986 50
1987 48
1988 46
1989 48
1990 57
1991 65
1992 80
1993 84
1994 104
1995 114
1996 133
1997 161
1998 172
1999 198
2000 248
2001 283
2002 317
2003 459
2004 467
2005 711
2006 754
2007 880
2008 1004
2009 1198
2010 1454
2011 1727
2012 2101
2013 2333
2014 2617
2015 2908
2016 3129
2017 3495
2018 3680
2019 4398
2020 4933
2021 1855
Text availability
Article attribute
Article type
Publication date

Search Results

38,072 results
Results by year
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