Afghans are divided into several ethnolinguistic groups. The Pashtuns are the largest ethnic group, comprising 39% (2019 sociological research data by The Asia Foundation), followed by Tajiks, also known as Farsiwans, comprising 37%. of the country's population. Generally the other three major ethnic groups are the Tajiks, Hazaras and Uzbeks. A further 10 other ethnic groups are recognized and each are represented in the Afghan National Anthem.