Google Books Ngram Viewer

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

1940 - 1968 1969 - 1995 1996 - 1999 2000 - 2003 2004 - 2008 viral English
1940 - 1949 1950 - 1976 1977 - 1981 1982 - 1999 2000 - 2008 meme English

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