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Results by year

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

Year Number of Results
1968 1
1973 3
1974 1
1976 1
1977 1
1978 2
1979 1
1980 3
1981 5
1982 2
1983 2
1984 2
1985 1
1993 2
1996 4
1998 5
1999 7
2000 4
2001 5
2002 8
2003 4
2004 4
2005 5
2006 6
2007 4
2008 2
2009 3
2010 6
2011 8
2012 6
2013 9
2014 8
2015 13
2016 9
2017 11
2018 8
2019 10
2020 1
Text availability
Article attribute
Article type
Publication date

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160 results
Results by year
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