Google Books Ngram Viewer

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

1800 - 1845 1846 - 1861 1862 - 1876 1877 - 1984 1985 - 2000 wombat English
1800 - 1888 1889 - 1980 1981 - 1988 1989 - 1995 1996 - 2000 koala English

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