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Results by year

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

Year Number of Results
1977 122
1978 140
1979 109
1980 95
1981 107
1982 121
1983 129
1984 134
1985 123
1986 135
1987 122
1988 140
1989 128
1990 131
1991 125
1992 200
1993 133
1994 147
1995 147
1996 200
1997 166
1998 213
1999 229
2000 263
2001 332
2002 267
2003 264
2004 253
2005 336
2006 332
2007 363
2008 441
2009 432
2010 492
2011 442
2012 438
2013 441
2014 499
2015 464
2016 443
2017 482
2018 589
2019 498
2020 179
Text availability
Article attribute
Article type
Publication date

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11,463 results
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