Earlier this month - on Sunday evening, April 6 to be exact - Nigeria suddenly became Africa’s largest economy. Using new data, Nigeria recalculated its GDP and overnight its wealth shot up by 90% to $509 billion, in the process leap-frogging South Africa’s. At the stroke of a pen, a Nigerian’s average income went from $1500 to $2688 a year. Nigeria’s movie industry alone became worth more than $7 billion a year, its oil industry ten times that. What didn’t change was the fact that most of its 170 million people still live below the poverty line.