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

Year Number of Results
1992 2
1998 135
1999 252
2000 279
2001 245
2002 340
2003 367
2004 513
2005 489
2006 480
2007 447
2008 398
2009 330
2010 281
2011 253
2012 229
2013 199
2014 259
2015 265
2016 235
2017 196
2018 196
2019 191
2020 196
2021 112
Text availability
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Article type
Publication date

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6,889 results
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