Google Books Ngram Viewer

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

1960 - 1986 1987 - 1992 1993 1994 - 2004 2005 - 2008 pro choice English
1960 - 1985 1986 - 1997 1998 1999 - 2002 2003 - 2008 abortion rights movement English

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