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Results by year

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

Year Number of Results
1954 1
1961 3
1962 1
1963 3
1964 1
1965 2
1966 3
1967 7
1968 2
1969 6
1970 2
1971 4
1972 1
1973 3
1974 5
1975 1
1976 1
1977 1
1978 4
1979 6
1980 4
1981 7
1982 6
1983 8
1984 11
1985 4
1986 6
1987 9
1988 8
1989 5
1990 8
1991 17
1992 7
1993 6
1994 16
1995 10
1996 19
1997 26
1998 31
1999 32
2000 29
2001 41
2002 42
2003 26
2004 32
2005 20
2006 22
2007 28
2008 35
2009 31
2010 49
2011 32
2012 34
2013 46
2014 50
2015 60
2016 65
2017 67
2018 66
2019 59
2020 68
2021 58
Text availability
Article attribute
Article type
Publication date

Search Results

1,132 results
Results by year
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