Google Books Ngram Viewer

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

1800 - 1972 1973 - 1976 1977 - 1978 1979 - 2002 2003 - 2008 busing English
1800 - 1830 1831 - 1973 1974 - 1975 1976 - 1995 1996 - 2008 bussing English

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