Google Books Ngram Viewer

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

1960 - 1988 1989 - 1998 1999 - 1998 1999 2000 raft of measures English
1960 - 1981 1982 - 1997 1998 1999 2000 elephant in the room English

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