Google Books Ngram Viewer

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

1990 - 1997 1998 1999 2000 in a website English
1990 - 1997 1998 1999 2000 on a website English

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