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

Year Number of Results
1991 57
1992 75
1997 50
1998 51
1999 61
2000 76
2001 92
2002 63
2003 51
2004 53
2005 70
2006 63
2007 87
2008 96
2009 99
2010 99
2011 71
2012 78
2013 55
2014 52
2015 42
2016 44
2017 44
2018 56
2019 51
2020 19
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Publication date

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1,655 results
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