Represented predominantly by South Asian ethnic groups, census data regarding birthplace and ethnicity demonstrate around a million Asian British people derive their ancestry between East Asia, Southeast Asia, Central Asia and West Asia. Since the 2001 census, British people of general Asian descent have been included in the "Asian/Asian British" grouping ("Asian, Asian Scottish or Asian British" grouping in Scotland) of the UK census questionnaires. Categories for British Indians, British Pakistanis, British Bangladeshis, British Chinese and Other Asians have existed under an Asian British heading since the 2011 census. In British English usage, especially in less formal contexts, the term "Asian" usually refers to people who trace their ancestry to South Asia.