Blighty vs Blighty one

Blighty

name
  • Great Britain, Britain, or England, especially as viewed from abroad. 

noun
  • Synonym of Blighty one 

Blighty one

noun
  • A wound that is relatively minor, but sufficiently severe that one will be sent to the hospital in England. 

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