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Results by year

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

Year Number of Results
1947 1
1948 1
1966 1
1967 6
1968 5
1969 5
1970 5
1971 10
1972 3
1973 2
1974 3
1975 2
1976 3
1977 4
1978 7
1979 4
1980 5
1981 5
1982 1
1983 5
1984 9
1985 8
1986 10
1987 14
1988 12
1989 16
1990 9
1991 11
1992 15
1993 26
1994 17
1995 27
1996 26
1997 25
1998 26
1999 28
2000 35
2001 42
2002 51
2003 65
2004 81
2005 98
2006 87
2007 113
2008 121
2009 157
2010 181
2011 216
2012 221
2013 248
2014 300
2015 308
2016 290
2017 336
2018 327
2019 156
2020 1
Text availability
Article attribute
Article type
Publication date

Search Results

3,421 results
Results by year
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