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

Year Number of Results
1966 7
1967 18
1968 25
1969 45
1970 19
1971 5
1996 150
1997 551
1998 375
1999 685
2000 615
2001 494
2002 646
2003 735
2004 846
2005 1367
2006 1301
2007 1201
2008 1071
2009 1139
2010 1236
2011 1381
2012 1249
2013 1147
2014 1019
2015 1173
2016 1204
2017 1612
2018 1753
2019 1887
2020 554
Text availability
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Publication date

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20,627 results
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