Google Books Ngram Viewer

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

1800 - 1925 1926 - 1942 1943 - 1948 1949 - 1990 1991 - 2000 bobsled English
1800 - 1911 1912 - 1922 1923 - 1926 1927 - 1975 1976 - 2000 bobsleigh English

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