Durchschnittsbevölkerung

Could you please specify the full term after "Durchschnittsb..."? The incomplete prompt could refer to several topics, such as Durchschnittsbetrag (average amount), Durchschnittseinkommen (average income), Durchschnittsalter (average age), or Durchschnittsbürger (average citizen). If you’d like, I can also write a general wiki-style article about the concept of average (Durchschnitt) in statistics. Please indicate which topic you want, or confirm that you’d like a broad overview of the average concept.