According to the human development index, inequality of income continues to be among the world's highest: as a percentage, the richest 20 per cent of the population earns 18 times as much revenue as the poorest 20 per cent.
根据人类发展指数，收入悬殊仍属世界前列：按百分比算，人口中最富的20％的收入相当于最穷的20％的收入的18倍。