Google Books Ngram Viewer

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

1800 - 1805 1806 - 1970 1971 - 1975 1976 - 1991 1992 - 2000 and or German
1800 - 1828 1829 - 1971 1972 - 1980 1981 - 1990 1991 - 2000 or and German

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