Google Books Ngram Viewer

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

1800 - 1951 1952 - 1989 1990 - 1993 1994 - 1996 1997 - 2000 sigmund freud German
1800 - 1969 1970 - 1990 1991 - 1993 1994 - 1997 1998 - 2000 wilhelm reich German
1800 - 1901 1902 - 1906 1907 - 1908 1909 - 1977 1978 - 2000 havelock ellis German
1800 - 1909 1910 - 1986 1987 - 1990 1991 - 1994 1995 - 2000 magnus hirschfeld German
1800 - 1960 1961 - 1990 1991 - 1992 1993 - 1998 1999 - 2000 alfred kinsey German

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