Amerika vs Amerikkka

Amerika

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

  • A female given name, a variant of America. 

Amerikkka

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

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