Whateverville vs bumfuck nowhere

Whateverville

name
  • A substitute placename for an inhabited place, a city or town, with an unknown or unspecified name. 

bumfuck nowhere

name
  • The middle of nowhere; a nondescript, isolated, and underdeveloped locale whose precise location may be difficult to ascertain. 

  • I can't believe we're lost in the middle of bumfuck nowhere with a broken-down car! 

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