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Results by year

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

Year Number of Results
1946 1
1958 1
1959 1
1962 2
1963 2
1964 4
1974 2
1975 3
1976 5
1977 7
1978 6
1979 11
1980 9
1981 11
1982 10
1983 10
1984 22
1985 15
1986 16
1987 26
1988 30
1989 31
1990 34
1991 48
1992 65
1993 49
1994 56
1995 62
1996 69
1997 90
1998 73
1999 75
2000 73
2001 98
2002 106
2003 153
2004 161
2005 223
2006 237
2007 272
2008 351
2009 392
2010 410
2011 462
2012 574
2013 646
2014 762
2015 877
2016 847
2017 971
2018 1111
2019 1306
2020 1542
2021 883
Text availability
Article attribute
Article type
Publication date

Search Results

11,965 results
Results by year
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