India, projected to surpass China as the world's most populous country around 2027, is expected to add nearly 273 million people between now and 2050 and will remain the most populated country through the end of the current century, a UN report said on Monday.

'The World Population Prospects 2019: Highlights', published by the Population Division of the UN Department of Economic and Social Affairs, said the world's population is expected to increase by two billion people in the next 30 years, from 7.7 billion currently to 9.7 billion in 2050.