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

Year Number of Results
1989 166
1990 211
1991 91
1992 240
1993 69
1994 65
1995 112
1996 94
1997 158
1998 139
1999 149
2000 193
2001 151
2002 158
2003 162
2004 151
2005 170
2006 164
2007 149
2008 143
2009 177
2010 181
2011 212
2012 175
2013 151
2014 134
2015 274
2016 503
2017 413
2018 446
2019 518
2020 738
2021 674
2022 569
2023 105
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Article type
Publication date

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7,111 results
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7,111 results