Shylock vs usurer

Shylock

name
  • A moneylender (Jewish stereotype) in Shakespeare's Merchant of Venice. 

usurer

noun
  • A person who loans money to others and charges interest, particularly at an illegal, exorbitant, or unfair rate. 

How often have the words Shylock and usurer occurred in a corpus of books? (source: Google Ngram Viewer )