Google Books Ngram Viewer

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

1800 - 1824 1825 - 1941 1942 - 1959 1960 - 1978 1979 - 2000 forward English
1800 - 1820 1821 - 1891 1892 - 1907 1908 - 1971 1972 - 2000 forwards English

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