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Results by year

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

Year Number of Results
1978 3
1979 2
1980 1
1981 1
1982 3
1983 3
1984 5
1985 6
1986 3
1987 2
1988 6
1989 14
1990 21
1991 25
1992 30
1993 58
1994 71
1995 129
1996 132
1997 171
1998 165
1999 160
2000 185
2001 175
2002 199
2003 208
2004 244
2005 239
2006 236
2007 269
2008 272
2009 249
2010 264
2011 254
2012 258
2013 261
2014 232
2015 261
2016 256
2017 204
2018 190
2019 109
2020 4
Text availability
Article attribute
Article type
Publication date

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5,064 results
Results by year
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