Google Books Ngram Viewer

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

1800 - 1807 1808 - 1816 1817 - 1825 1826 - 1952 1953 - 2000 mankind English
1800 - 1814 1815 - 1882 1883 - 1898 1899 - 1968 1969 - 2000 humanity English

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