New Delhi: Normally a nation is considered rich, when its GDP (Gross Domestic Product) per capita (per person per annum) is higher.The most commonly accepted method of determining the wealth of countries and comparing generalized differences in living standards on a whole between nations is to use GDP per capita on a purchasing power parity basis in current international dollars. The Gross Domestic Product(GDP) measures the total value, calculated in dollars, of all final production in a country. It can be calculated in three ways: by adding up income and profits received from production of goods and services. By that measure it is estimated that in 2013 the richest nation in the world was Qatar, with a per capita GDP (PPP) of over 105 thousand dollars, while the poorest was the Democratic Republic of Congo, with less than 400 dollars. India stands in 126th position in the World Bank list with a per capital GDP of $ 3876.With population in India exploding, we need several more decades of Red Fort speeches to reach the level of, say, China, which stands 92nd with $ 9233 per capita GDP. 1. Qatar Qatar has been ranked as the world's richest country in 2013 as per capital declared by Forbes magazine.Qatar is a third-largest natural gas reserves in the world. Qatar has an estimated gross domestic product per capital of $88,228.as per March 2012 calculations. 2. LuxembourgLuxembourg secured second ranking in this list with the estimated GDP of $ 80,679.06 per capita as of March 2012. As per 2011 reports of World Bank it has a populations of 518,252. Its currency is Euro. 3. SingaporeThis Southeast Asian island city-state off the southern tip of the Malay Peninsula secured third position in the list with the estimated per capita GDP of $ 60,883.33. 4. NorwayThis Scandinavian unitary constitutional monarchy secured fourth position in the list with the per capita GDP of $55,264.45. 5. Hong Kong SARThis is one of the two Special Administrative Regions of the People's Republic of China. It secured fifth position in the list with the estimated per capita GDP of $ 50,708.95. 6. BruneiThis sovereign state located on the north coast of the island of Borneo, in Southeast Asia, secured sixth position on the list of $ 50,526.35. 7. United StatesThis global super power secured seventh position in the list with the estimated GDP of $ 49,802.15. 8. United Arab Emirates The abundance of natural resources like oil has helped UAE to come a long way in terms of economic development. It secured eighth position on the list with the estimated per capita GDP of $ 48,992.47. 9. SwitzerlandSwitzerland is largely famous for its banking activities. It secured ninth position on the list with the estimated per capita GDP of $ 45,285.8. 10. Kuwait Kuwait secured tenth position in the list with the estimated per capita GDP of $ 43,846.72.