Google Books Ngram Viewer

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

1800 - 1920 1921 - 1972 1973 - 1977 1978 - 1995 1996 - 2000 fluctuates wildly English
1800 - 1917 1918 - 1953 1954 - 1959 1960 - 1985 1986 - 2000 fluctuates widely English

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