Europhile vs Leaver

Europhile

noun

  • A political supporter of the European Union. 

  • One who loves Europe, Europeans, or European culture. 

Leaver

noun

  • Someone who supports Brexit, the United Kingdom's exit from the European Union. 

name

  • A surname. 

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