Google Books Ngram Viewer

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

1920 - 1925 1926 - 1933 1934 - 1941 1942 - 1999 2000 - 2008 лейпциг Russian
1920 - 1964 1965 - 2000 2001 - 2002 2003 - 2005 2006 - 2008 ляйпциг Russian

Run your own experiment! Raw data is available for download here.
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