Google Books Ngram Viewer

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

1970 - 1974 1975 - 1995 1996 - 1998 1999 - 2002 2003 - 2008 free university of berlin English
1970 - 1977 1978 - 1985 1986 - 1987 1988 - 2007 2008 freie universität berlin English
1970 - 1979 1980 - 1986 1987 1988 - 2005 2006 - 2008 freie universitaet berlin English
1970 - 1978 1979 - 1990 1991 - 1993 1994 - 2005 2006 - 2008 freie universitat berlin English

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