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

Year Number of Results
1946 4
1947 1
1957 1
1960 1
1961 1
1962 1
1968 1
1969 2
1983 1
1988 2
1989 20
1990 28
1991 38
1992 53
1993 86
1994 99
1995 78
1996 75
1997 104
1998 99
1999 137
2000 165
2001 152
2002 171
2003 178
2004 235
2005 214
2006 247
2007 256
2008 328
2009 395
2010 350
2011 461
2012 549
2013 560
2014 614
2015 606
2016 524
2017 581
2018 578
2019 334
2020 11
Text availability
Article attribute
Article type
Publication date

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7,395 results
Results by year
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