Iowa vs bumfuck middle of nowhere

Iowa

name
  • A town in Calcasieu Parish, Louisiana. 

  • A tributary of the Mississippi River which flows through Iowa in a southeast direction. 

  • University of Iowa. 

  • A state in the Midwestern region of the United States. Capital and largest city: Des Moines. 

noun
  • One of the Native Americans formerly occupying the region now included in the state of Iowa. 

bumfuck middle of nowhere

noun
  • Synonym of bumfuck nowhere 

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