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Results by year

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

Year Number of Results
1951 2
1952 1
1953 3
1954 2
1956 4
1959 4
1960 3
1961 2
1962 5
1964 2
1965 5
1966 6
1967 5
1968 8
1969 9
1970 11
1971 9
1972 10
1973 6
1974 13
1975 8
1976 14
1977 4
1978 13
1979 17
1980 15
1981 11
1982 18
1983 21
1984 23
1985 20
1986 10
1987 12
1988 11
1989 12
1990 14
1991 14
1992 14
1993 14
1994 8
1995 5
1996 13
1997 10
1998 12
1999 13
2000 6
2001 9
2002 17
2003 8
2004 31
2005 21
2006 20
2007 17
2008 16
2009 19
2010 17
2011 30
2012 34
2013 20
2014 15
2015 27
2016 20
2017 29
2018 19
2019 19
2020 28
2021 44
2022 0
Text availability
Article attribute
Article type
Publication date

Search Results

873 results
Results by year
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873 results