Google Books Ngram Viewer

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

1800 - 1803 1804 - 1810 1811 - 1846 1847 - 1980 1981 - 2000 fora English
1800 - 1922 1923 - 1987 1988 - 1993 1994 - 1997 1998 - 2000 forums English

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