There are also Indian Tamils who form a distinct ethnic group comprising 4.1% of the population. The British brought them to Sri Lanka in the 19th century as tea and rubber plantation workers, and they remain concentrated in the "tea country" of south-central Sri Lanka. The Indian Tamils of Sri Lanka were considered to be "stateless" and over 300 000 Indian Tamils were deported back to India, due to the agreement between Sri Lanka and India in 1964. Under the pact, India granted citizenship to the remainder, some 200,000 of whom now live in India. Another 75,000 Indian Tamils, who themselves or whose parents once applied for Indian citizenship, now wish to remain in Sri Lanka. The government has stated these Tamils will not be forced to return to India, although they are not technically citizens of Sri Lanka. By the 1990s most Indian Tamils had received Sri Lankan citizenship, and some even were not granted Sri Lankan citizenship until 2003.