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 - 1895 1896 - 1909 1910 - 1955 1956 - 2008 merry English
1800 - 1890 1891 - 1936 1937 - 1945 1946 - 2000 2001 - 2008 merry christmas English

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