Google Books Ngram Viewer

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

1800 - 1813 1814 - 1827 1828 - 1841 1842 - 1963 1964 - 2000 indifferent English
1800 - 1819 1820 - 1836 1837 - 1890 1891 - 1969 1970 - 2000 indifferent to English

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