File:NgramFck.png

Summary
NOTE: This image is a screen capture of Google's tool which is not in the PD. Only if you made your own original graph using this data would it be PD. Green Cardamom (talk) 20:24, 30 April 2012 (UTC)

From Google NGram Viewer on Aug 28, 2011. English books.

Usage statistics of the word "fuck" from English books, according to Google Ngram Viewer. The spike in the 1700s can be explained by modern optical character recognition technology reading the Latin long s as an f in the word "suck".