Malaysians are citizens who are identified with the country of Malaysia. Although citizens make up the majority of Malaysians, non-citizen residents and overseas Malaysians may also claim a Malaysian identity. The country is home to people of various national, ethnic and religious origins. As a result, many Malaysians do not equate their nationality with ethnicity, but with citizenship and allegiance to Malaysia. Majority of the population, however, belong to several clearly defined racial groups within the country with their own distinct cultures and traditions: Malays, Orang Asli (aboriginal population), Malaysian Chinese (primarily Han Chinese), Malaysian Indians (primarily Tamils). The majority of the non-Malay and non-aboriginal population in modern Malaysia is made up of immigrants and their descendants. Following the initial period of Portuguese, Dutch and then significantly longer British colonisation, different waves (or peaks) of immigration and settlement of non-aboriginal peoples took place over the course of nearly five centuries and continue today. Malayan independence from the United Kingdom in 1957 grew gradually over the course of latter part of the 20th century since the formation of the Federation of Malaya in 1948 (excluding Crown Colony of Singapore, Crown Colony of North Borneo and Crown Colony of Sarawak). World War II in particular gave rise to a desire amongst Malayans to have their country recognised as a fully-fledged sovereign state with a distinct citizenship. Demographics of Malaysia Immigration to Malaysia As of 2010, Malaysians make up 0.4% of the world's total population, having relied upon immigration for population growth and social development. Approximately 30% of current Malaysians are first- or second-generation immigrants, and 20 percent of Malaysian residents in the 2000s were not born in Malaysian soil. It is estimated, by 2031, nearly one-half of Malaysians above the age of 15 will be foreign born or have one foreign born parent. Bumiputera, according to the 2010 Malaysian Census, numbered at 17,523,508 or 61.