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 - 1817 1818 - 1864 1865 - 1957 1958 - 2000 break your head English
1800 - 1810 1811 - 1855 1856 - 1865 1866 - 1939 1940 - 2000 break my head English
1800 - 1815 1816 - 1828 1829 - 1878 1879 - 1957 1958 - 2000 break his head English

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