Google Books Ngram Viewer

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

1960 - 1985 1986 - 1990 1991 1992 - 2000 2001 - 2004 pro choice English
1960 - 1984 1985 - 1994 1995 1996 - 2007 2008 abortion rights movement English
1960 - 1986 1987 - 1994 1995 1996 - 2003 2004 - 2008 abortion rights English

Run your own experiment! Raw data is available for download here.
© 2013 Google - Privacy & Terms - About Google - About Google Books - About Ngram Viewer