Elvis vs back breaker

Elvis

name

  • Elvis Presley (1935-1977), a popular American rock-and-roll singer. 

  • A male given name. 

noun

  • An impersonator of Elvis Presley. 

  • An Elvis operator. 

back breaker

How often have the words Elvis and back breaker occurred in a corpus of books? (source: Google Ngram Viewer )