Google Books Ngram Viewer

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

1900 - 1910 1911 - 1914 1915 - 1957 1958 - 1988 1989 - 2000 one and a half minute English
1900 - 1907 1908 - 1914 1915 - 1920 1921 - 1983 1984 - 2000 one and a half minutes English

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