Murican vs New Worlder

Murican

noun

  • An American (inhabitant of the USA). 

adj

  • American (of the USA). 

name

  • American English 

New Worlder

noun

  • An inhabitant of the New World or Americas. 

How often have the words Murican and New Worlder occurred in a corpus of books? (source: Google Ngram Viewer )