Google Books Ngram Viewer

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

1800 - 2000 2001 2002 2003 - 2008 2009 - 2008 python development English
1800 - 1923 1924 - 2005 2006 2007 2008 ruby development English
1800 - 1939 1940 - 1989 1990 - 1992 1993 - 2001 2002 - 2008 c development English
1800 - 1999 2000 - 2002 2003 2004 2005 - 2006 perl development English

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