Nigeria is Africa’s most populous country, a designation it wears with pride. It had more than 182m citizens in 2015, according to the World Bank, and is poised to have the world’s third-largest population, behind India and China, by 2050. But that figure and the extrapolation are based on Nigeria’s 2006 census, which was probably exaggerated. Parliamentary seats and central government money are handed out to states based on population, giving politicians an incentive to inflate the numbers. In 2013 the head of the National Population Commission (NPC), Festus Odimegwu, said that neither the 2006 census nor any previous one had been accurate. He resigned soon after (the then-government said he was fired).