Google Books Ngram Viewer

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

1800 - 1853 1854 - 1962 1963 - 1976 1977 - 1992 1993 - 2008 teaching English
1800 - 1814 1815 - 1963 1964 - 1979 1980 - 1995 1996 - 2008 learning English

Run your own experiment! Raw data is available for download here.
© 2013 Google - Privacy & Terms - About Google - About Google Books - About Ngram Viewer