Google Books Ngram Viewer

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

1800 - 1926 1927 - 1981 1982 - 1987 1988 - 1994 1995 - 2000 oldest profession English
1800 - 1941 1942 - 1988 1989 - 1991 1992 - 1995 1996 - 2000 second oldest profession English
1800 - 1948 1949 - 1987 1988 - 1989 1990 - 1995 1996 - 2000 third oldest profession English

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