Idaho vs bumfuck middle of nowhere

Idaho

name
  • A state in the western United States. Capital and largest city: Boise. 

  • An unincorporated community in Pike County, Ohio, United States, named for Idaho Territory. 

  • University of Idaho 

noun
  • In full Idaho potato: a variety of potato grown in Idaho, especially the Russet Burbank. 

bumfuck middle of nowhere

noun
  • Synonym of bumfuck nowhere 

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