on last leg vs retired

on last leg

retired

adj
  • Secluded from society (of a lifestyle, activity etc.); private, quiet. 

  • Of a place: far from civilisation, not able to be easily seen or accessed; secluded. 

  • Having left employment, especially on reaching pensionable age. 

  • No longer in use or production. 

How often have the words on last leg and retired occurred in a corpus of books? (source: Google Ngram Viewer )