Google Books Ngram Viewer

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

1800 - 1813 1814 - 1833 1834 - 1842 1843 - 1939 1940 - 2008 strait and narrow English
1800 - 1841 1842 - 1928 1929 - 1942 1943 - 1996 1997 - 2008 straight and narrow English

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