Ottawa-Gatineau vs Ottawa-Hull

Ottawa-Gatineau

name

  • The biprovincial metropolitan region containing Ottawa, Ontario and Gatineau, Quebec in Canada. 

Ottawa-Hull

name

  • The National Capital Region (NCR) of Canada; Former name of Ottawa-Gatineau. 

How often have the words Ottawa-Gatineau and Ottawa-Hull occurred in a corpus of books? (source: Google Ngram Viewer )