Inequality In 1990 Vs 2015

this graph was created in Loocker studio,PowerBi and Tableau:

To answer this question, we brought together estimates of income inequality for two points in time: today and a generation ago in 1990. Our metric of income inequality is the Gini index which is higher in a country with higher inequality.1

We rely on estimates from two online databases: PovcalNet2, run by the World Bank, and the Chartbook of Economic Inequality, which I published together with Tony Atkinson, Salvatore Morelli, and Max Roser.3 This gave us a sample of 83 countries, covering around 85% of the world's population (download the data here).

The chart here compares levels of inequality today with those one generation ago. If you've not seen this sort of chart before, it may take a moment to understand what's going on. How high a country is in the chart shows you the level of inequality in 2015. How far to the right shows you the level of inequality in 1990.4 In addition, a 45-degree line is plotted. Countries below this line saw a fall in the Gini index between the two dates; countries above saw an increase.