Johannesburg - Nigeria is still Africa’s number one economy, even after a 30% devaluation of the naira last month knocked almost $150bn off its gross domestic product when measured in dollar terms.
However, South Africa, which has regained second place after overtaking Egypt, is closing the gap. While its economy also shrank as the rand weakened, the gap with Nigeria has narrowed to $60bn now from $170bn at the end of 2015.