Welshman vs pommy

Welshman

noun
  • A man who is a native or inhabitant of Wales. 

pommy

noun
  • A pom; a person of British descent, a Briton; an Englishman. 

adj
  • English; British. 

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