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Results by year

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

Year Number of Results
1971 3
1972 1
1973 1
1974 2
1975 3
1976 6
1977 2
1978 10
1979 8
1980 6
1981 6
1982 5
1983 9
1984 7
1985 14
1986 9
1987 4
1988 15
1989 92
1990 323
1991 400
1992 425
1993 400
1994 389
1995 426
1996 465
1997 461
1998 451
1999 534
2000 532
2001 670
2002 604
2003 641
2004 684
2005 744
2006 822
2007 835
2008 895
2009 875
2010 949
2011 958
2012 1099
2013 1234
2014 1283
2015 1275
2016 1242
2017 1267
2018 1210
2019 580
2020 12
Text availability
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Publication date

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20,415 results
Results by year
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