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

Year Number of Results
1972 2
1974 1
1975 1
1976 1
1977 3
1978 2
1980 1
1984 2
1985 2
1990 5
1991 2
1992 9
1993 1
1994 5
1995 4
1996 6
1997 5
1999 4
2000 7
2001 3
2002 3
2003 3
2004 3
2005 5
2006 5
2007 6
2008 8
2009 10
2010 10
2011 8
2012 14
2013 4
2014 5
2015 3
2016 12
2017 10
2018 5
2019 6
2020 11
2021 7
Text availability
Article attribute
Article type
Publication date

Search Results

187 results
Results by year
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187 results
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