Jersey vs NJ

Jersey

noun
  • A cow of the Jersey breed. 

name
  • An English earldom. 

  • New Jersey. 

  • A dependency of the United Kingdom; the largest of the Channel Islands in the English Channel between France and England. 

  • A town in Georgia, United States. 

  • A breed of dairy cattle from Jersey. 

NJ

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