US-ian vs United Statesian

US-ian

noun

  • An inhabitant or citizen of the United States of America. 

adj

  • Of or pertaining to the United States of America. 

United Statesian

noun

  • An inhabitant or citizen of the United States of America. 

adj

  • Of or pertaining to the United States of America. 

How often have the words US-ian and United Statesian occurred in a corpus of books? (source: Google Ngram Viewer )