Google Books Ngram Viewer

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

1908 - 1970 1971 - 2005 2006 2007 2008 mass incarceration English
1908 - 2000 2001 - 2005 2006 2007 2008 prison industrial complex English
1908 - 1952 1953 - 2003 2004 - 2005 2006 2007 - 2008 mass imprisonment English
1908 - 1971 1972 - 1973 1974 1975 - 2002 2003 - 2008 overcriminalization English
1908 - 1990 1991 - 2005 2006 2007 2008 overincarceration English
1908 - 1941 1942 - 1950 1951 - 1952 1953 - 2004 2005 - 2008 prison state English

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