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Results by year

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

Year Number of Results
1957 1
1958 1
1959 1
1960 1
1961 1
1962 1
1964 1
1965 3
1968 4
1969 2
1970 1
1971 2
1972 1
1973 1
1974 1
1975 2
1976 1
1977 2
1978 5
1979 1
1980 3
1982 1
1985 2
1986 1
1987 1
1988 2
1990 1
1992 6
1993 10
1994 4
1995 8
1996 7
1997 3
1998 6
1999 3
2000 8
2001 1
2002 6
2003 17
2004 18
2005 25
2006 22
2007 22
2008 32
2009 40
2010 62
2011 52
2012 74
2013 104
2014 111
2015 101
2016 106
2017 93
2018 136
2019 158
2020 198
2021 45
Text availability
Article attribute
Article type
Publication date

Search Results

1,352 results
Results by year
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