Google Books Ngram Viewer

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

1800 - 1907 1908 - 1951 1952 - 1957 1958 - 1988 1989 - 2000 decreased by the same amount English
1800 - 1954 1955 - 1973 1974 - 1976 1977 - 1994 1995 - 2000 by roughly the same amount English
1800 - 1953 1954 - 1981 1982 - 1985 1986 - 1994 1995 - 2000 at roughly the same rate English

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