Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1970 - 1978 1979 1980 - 1982 1983 - 2000 2001 - 2004 wahabi English
1970 - 1975 1976 1977 - 1993 1994 - 2007 2008 wahhabi English
1970 - 1988 1989 - 2005 2006 2007 2008 salafi English

Run your own experiment! Raw data is available for download here.
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