Chinaman vs Chinaperson

Chinaman

noun
  • Synonym of Chinaperson, a Chinese person of either gender. 

  • A sailing ship of the 18th and 19th centuries engaged in the Old China Trade 

Chinaperson

noun
  • A Chinese person. 

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