Japayuki-san vs mudkicker

Japayuki-san

noun
  • A Filipina who travels to Japan to work as an entertainer, with implications of prostitution. 

mudkicker

noun
  • Prostitute. 

  • Laborer. 

How often have the words Japayuki-san and mudkicker occurred in a corpus of books? (source: Google Ngram Viewer )