Google Books Ngram Viewer

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

1800 - 1829 1830 - 1868 1869 - 1883 1884 - 1986 1987 - 2008 avoir affaire French
1800 - 1830 1831 - 1907 1908 - 1924 1925 - 1985 1986 - 2008 avoir à faire French

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