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Results by year

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

Year Number of Results
1960 7
1961 11
1962 3
1965 1
1966 6
1967 4
1968 3
1969 4
1970 3
1971 11
1972 14
1973 13
1974 11
1975 11
1976 7
1977 17
1978 13
1979 16
1980 13
1981 6
1982 13
1983 13
1984 30
1985 36
1986 38
1987 28
1988 45
1989 46
1990 99
1991 215
1992 289
1993 396
1994 817
1995 759
1996 478
1997 416
1998 481
1999 565
2000 611
2001 863
2002 1010
2003 1353
2004 1457
2005 1691
2006 1748
2007 1953
2008 1982
2009 2037
2010 2012
2011 2274
2012 2465
2013 2578
2014 2497
2015 2624
2016 2215
2017 2055
2018 2149
2019 1456
2020 142
Text availability
Article attribute
Article type
Publication date

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37,638 results
Results by year
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