Google Books Ngram Viewer

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

1800 - 1877 1878 - 1881 1882 - 1958 1959 - 2003 2004 - 2008 happy holidays English

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