Google Books Ngram Viewer

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

1800 - 1807 1808 - 1816 1817 - 1854 1855 - 1959 1960 - 2000 virtue English
1800 - 1836 1837 - 1962 1963 - 1975 1976 - 1988 1989 - 2000 institutions English

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