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Results by year

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

Year Number of Results
1974 1
1976 2
1977 16
1978 7
1979 13
1980 19
1981 25
1982 12
1983 16
1984 19
1985 10
1986 27
1987 11
1988 16
1989 20
1990 27
1991 20
1992 27
1993 33
1994 26
1995 29
1996 51
1997 68
1998 134
1999 159
2000 213
2001 213
2002 170
2003 179
2004 150
2005 142
2006 148
2007 126
2008 90
2009 105
2010 84
2011 77
2012 92
2013 91
2014 74
2015 73
2016 74
2017 62
2018 45
2019 18
2020 1
Text availability
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Article type
Publication date

Search Results

2,832 results
Results by year
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