According to the United Nations, India will overtake China to be the world's most populous country by 2022.
By population size, China is currently the largest country with 19%, closely followed by India with 18%.
There are currently 1.38 billion people in China, while there are 1.31 billion in India. However, the UN predicts that by 2022, both countries will pass 1.4 billion people, with India marginally ahead.
It is also said that India's population will grow to 1.5 billion in 2030, and 1.7 billion in 2050, whilst the population in China will start to see a decrease after the 2030s.
