Google Books Ngram Viewer

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

1800 - 1806 1807 - 1812 1813 - 1818 1819 - 1946 1947 - 2000 kennte German
1800 - 1806 1807 - 1815 1816 - 1858 1859 - 1962 1963 - 2000 kennten German

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