A new report from Unicef notes that global income inequality, as measured by the Gini coefficient, is 64 per cent higher than it was 200 years ago. The report notes that the poorest 20 per cent of the world's population holds two per cent of its income. At the rate of change posted in the past 20 years, it will take more than 250 years for the bottom 20 per cent to go from two per cent to 10 per cent.