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Results by year

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

Year Number of Results
1954 3
1955 1
1956 3
1957 4
1958 8
1959 3
1960 8
1961 5
1962 4
1963 11
1964 6
1965 8
1967 7
1968 4
1969 8
1970 10
1971 15
1972 19
1973 13
1974 8
1975 10
1976 20
1977 29
1978 17
1979 29
1980 33
1981 39
1982 41
1983 47
1984 52
1985 43
1986 56
1987 77
1988 59
1989 79
1990 86
1991 85
1992 105
1993 109
1994 109
1995 134
1996 109
1997 145
1998 169
1999 150
2000 209
2001 186
2002 222
2003 260
2004 306
2005 388
2006 397
2007 457
2008 529
2009 597
2010 691
2011 733
2012 878
2013 965
2014 1020
2015 1016
2016 1133
2017 1190
2018 1217
2019 1231
2020 237
Text availability
Article attribute
Article type
Publication date

Search Results

14,301 results
Results by year
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