per capita
adjective, adverb /pə ˈkæpɪtə/
  /pər ˈkæpɪtə/
(from Latin)- for each person
- Per capita income rose sharply last year.
 - average earnings per capita
 
Oxford Collocations DictionaryPer capita is used with these nouns:- consumption
 - expenditure
 - income
 - …
 
Word Originlate 17th cent.: Latin, literally ‘by heads’.