Filthy Rich to Filthy Poor Countries

This is a fact sheet published by Global Finance on GDP based on purchasing -power-parity (PPP) per capita of 189 countries in the world. The Qatar ranks first ($129726) and Nepal ranks 162 with ($2480 PPP per capita / year). This report is for year 2016 and data was collected from International Monetary Fund, World Economic Outlook Database, October 2016.
Definitely, GDP is not 100 % accurate to measure wealth, but it's a one of the best proxy indicator of wealth when measured based on purchasing- power parity.

[Complete list of 189 countries GDP in this link : https://www.gfmag.com/global-data/economic-data/richest-countries-in-the-world?page=12 ]