Google Books Ngram Viewer

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

1840 - 1886 1887 - 1942 1943 - 1951 1952 - 1984 1985 - 2000 overcrowded English
1840 - 1888 1889 - 1965 1966 - 1975 1976 - 1986 1987 - 2000 overcrowding English

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