Google Books Ngram Viewer

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

1800 - 1975 1976 - 1993 1994 - 1995 1996 - 1997 1998 - 2000 preschoolers English
1800 - 1814 1815 - 1862 1863 1864 - 1988 1989 - 2000 under 5s English
1800 - 1961 1962 1963 - 1986 1987 - 1999 2000 under 5 year olds English

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