Google Books Ngram Viewer

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

1939 - 1965 1966 - 1995 1996 - 1999 2000 - 2004 2005 - 2008 the human condition English
1939 - 1966 1967 - 1998 1999 - 2001 2002 - 2004 2005 - 2008 humans English
1939 - 1946 1947 - 1989 1990 - 1995 1996 - 2001 2002 - 2008 human beings English
1939 - 1943 1944 - 1959 1960 - 1964 1965 - 1995 1996 - 2008 mankind English

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