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Results by year

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

Year Number of Results
1975 2
1976 3
1977 26
1978 8
1979 8
1980 4
1981 5
1982 9
1983 8
1984 6
1985 5
1986 3
1987 8
1988 2
1989 6
1990 4
1991 15
1992 26
1993 48
1994 55
1995 55
1996 65
1997 70
1998 60
1999 98
2000 107
2001 131
2002 139
2003 160
2004 154
2005 155
2006 146
2007 199
2008 187
2009 172
2010 197
2011 230
2012 204
2013 181
2014 190
2015 206
2016 157
2017 137
2018 119
2019 41
2020 3
Text availability
Article attribute
Article type
Publication date

Search Results

3,363 results
Results by year
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