Amerikkka vs Yankee land

Amerikkka

name

  • The United States of America. Generally used in depicting the country as fascist or racist. 

Yankee land

name

  • The United States. 

  • New England. 

  • The northern states region of the United States. 

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