Japayuki-san vs nymph of the pavement

Japayuki-san

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

nymph of the pavement

noun
  • A female prostitute. 

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