QPP vs SQ

QPP

noun

  • Quebec Provincial Police (Sûreté du Québec); the police force of the Canadian province of Quebec. 

  • Quebec Pension Plan 

SQ

noun

  • subcutaneous injection 

name

  • Sûreté du Québec - the Quebec provincial police force 

adj

  • subcutaneous 

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