Google Books Ngram Viewer

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

1800 - 1958 1959 - 1993 1994 - 1997 1998 - 2001 2002 - 2008 priorities English
1800 - 1865 1866 - 1988 1989 - 1994 1995 - 2000 2001 - 2008 priority English

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