Google Books Ngram Viewer

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

1800 - 1820 1821 - 1948 1949 - 1967 1968 - 1983 1984 - 2000 future English
1800 - 1818 1819 - 1853 1854 - 1870 1871 - 1975 1976 - 2000 progress English

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