Google Books Ngram Viewer

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

1900 - 1913 1914 - 1928 1929 - 1932 1933 - 1969 1970 - 2008 bookkeeping English

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