Google Books Ngram Viewer

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

1800 - 1824 1825 - 1949 1950 - 1965 1966 - 1981 1982 - 2000 only two English
1800 - 1822 1823 - 1945 1946 - 1962 1963 - 1979 1980 - 2000 only three English
1800 - 1821 1822 - 1945 1946 - 1962 1963 - 1979 1980 - 2000 only four English
1800 - 1822 1823 - 1945 1946 - 1963 1964 - 1980 1981 - 2000 only five English

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