You know your country is big when the official population figure may plausibly be off by 90 million people:
India may already have overtaken China as the world’s most populous country, according to research by an independent Chinese demographer.
Yi Fuxian, a scientist at the University of Wisconsin-Madison, said Chinese officials had overestimated the number of births between 1990 and 2016 by almost 90m.
He attributed the alleged error partly to an overly optimistic fertility rate figure. China’s fertility rate was estimated at 1.6 children per woman in 2015, while Mr Yi believes it could be as low as 1.05.
If Mr Yi is correct, China’s population at the end of last year was 1.29bn, compared to the government’s official figure of 1.38bn. India’s population is officially estimated at 1.33bn.