Google Books Ngram Viewer

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

1800 - 1853 1854 - 1933 1934 - 1946 1947 - 1978 1979 - 2000 postman English
1800 - 1938 1939 - 1983 1984 - 1989 1990 - 1995 1996 - 2000 mailman English

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