Google Books Ngram Viewer

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

1960 - 1963 1964 - 1975 1976 - 1979 1980 - 2000 2001 - 2008 to begin with English

Excluding ngrams with part-of-speech tags from search links.

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