Google Books Ngram Viewer

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

1800 - 1822 1823 - 1970 1971 - 1980 1981 - 1996 1997 - 2000 blog English
1800 - 1969 1970 - 1990 1991 1992 1993 podcast English

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