According to the 2011 census of India, the population of NCT of Delhi is 16,753,235. The corresponding population density was 11,297 persons per km2 with a sex ratio of 866 women per 1000 men, and a literacy rate of 86.34%. In 2004, the birth rate, death rate and infant mortality rate per 1000 population were 20.03, 5.59 and 13.08, respectively. In 2001, the population of Delhi increased by 285,000 as a result of migration and by 215,000 as a result of natural population growth, which made Delhi one of the fastest-growing cities in the world. Dwarka Sub City, Asia's largest planned residential area, is located within the National Capital Territory of Delhi. Urban expansion has resulted in Delhi's urban area now being considered as extending beyond the NCT boundaries to incorporate the towns and cities of neighbouring states including Faridabad and Gurgaon of Haryana, and Ghaziabad and Noida of Uttar Pradesh, the total population of which is estimated by the United Nations at over 28 million. According to the UN this makes Delhi urban area the world's second-largest, after Tokyo, although Demographia declares the Jakarta urban area to be the second-largest. The 2011 census provided two figures for urban area population: 16,314,838 within the NCT boundary, and 21,753,486 for the ''Extended Urban Area''. The 2021 regional plan released by the Government of India renamed the ''Extended Urban Area'' from ''Delhi Metropolitan Area (DMA)'' as defined by the 2001 plan to ''Central National Capital Region (CNCR)''. Around 49% of the population of Delhi lives in slums and unauthorized colonies without any civic amenities. The majority of the slums have inadequate provisions to the basic facilities and according to a DUSIB report, almost 22% of the people do open defecation.