Google Books Ngram Viewer

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

1800 - 1824 1825 - 1974 1975 - 1980 1981 - 2001 2002 - 2008 caliber English
1800 - 1851 1852 - 1964 1965 - 1976 1977 - 1988 1989 - 2008 calibre English

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