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Results by year

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

Year Number of Results
1961 1
1962 1
1964 1
1967 1
1974 1
1975 2
1976 7
1977 21
1978 25
1979 19
1980 28
1981 16
1982 22
1983 40
1984 19
1985 54
1986 19
1987 28
1988 22
1989 22
1990 22
1991 24
1992 23
1993 38
1994 15
1995 35
1996 32
1997 27
1998 29
1999 45
2000 47
2001 46
2002 48
2003 47
2004 49
2005 65
2006 61
2007 57
2008 50
2009 42
2010 49
2011 43
2012 64
2013 56
2014 32
2015 51
2016 48
2017 57
2018 67
2019 43
2020 55
2021 48
2022 27
2023 3
Text availability
Article attribute
Article type
Publication date

Search Results

1,680 results
Results by year
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1,680 results