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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
1960 2
1961 1
1962 1
1963 4
1964 2
1965 4
1966 1
1971 1
1974 1
1976 1
1978 2
1979 2
1980 12
1981 44
1982 68
1983 107
1984 72
1985 91
1986 84
1987 78
1988 138
1989 129
1990 176
1991 159
1992 101
1993 114
1994 112
1995 145
1996 156
1997 134
1998 162
1999 153
2000 169
2001 229
2002 211
2003 201
2004 144
2005 168
2006 168
2007 192
2008 232
2009 213
2010 262
2011 252
2012 251
2013 231
2014 253
2015 279
2016 249
2017 241
2018 246
2019 128
2020 2
Text availability
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Article type
Publication date

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6,229 results
Results by year
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