What is the Proportion of Tamil in Sri Lanka’s total population?

Sri Lanka has a diverse population. The proportion of Tamil in Sri Lanka’s total population is 18 per cent. The proportion of people speaking Sinhala is 74 per cent. Among Tamils, there are 2 subgroups:

a) The Tamil natives of the country called the Sri Lankan Tamils.

b) The Indian Tamils whose ancestors came to Sri Lanka in search of work during the colonial period.