Google Books Ngram Viewer

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

1800 - 1814 1815 - 1884 1885 - 1895 1896 - 1909 1910 - 1930 centre English
1800 - 1859 1860 - 1918 1919 - 1922 1923 - 1926 1927 - 1930 center English

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