Amerika vs Yankee land

Amerika

name

  • America; used to imply that the US is fascist. 

  • A female given name, a variant of America. 

Yankee land

name

  • The United States. 

  • New England. 

  • The northern states region of the United States. 

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