Google Books Ngram Viewer

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

1800 - 1917 1918 - 1989 1990 - 1997 1998 - 2003 2004 - 2008 inspirational English
1800 - 1829 1830 - 1911 1912 - 1924 1925 - 1985 1986 - 2008 inspiring English

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