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Results by year

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

Year Number of Results
1967 1
1968 1
1969 2
1971 1
1972 1
1974 4
1975 1
1976 1
1977 3
1980 2
1982 3
1983 15
1984 11
1985 6
1986 11
1987 8
1988 9
1989 12
1990 31
1991 93
1992 101
1993 122
1994 157
1995 164
1996 151
1997 133
1998 178
1999 161
2000 166
2001 222
2002 199
2003 201
2004 216
2005 238
2006 236
2007 232
2008 261
2009 192
2010 221
2011 266
2012 283
2013 247
2014 228
2015 225
2016 209
2017 227
2018 170
2019 71
2020 1
Text availability
Article attribute
Article type
Publication date

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5,349 results
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