India is projected to be one of the twelve countries who together will account for 50% of the world's population growth until 2050, at which point it's assumed India will host 1.7 billion humans. Asia will in total have gone from 4.3 to 5.2 billions, which is by far not as dramatic as the projected growth of Africa from 1.1 billion now to 2.5 billion in 2050.