10 most richest countries in the world.

What does it mean for a country to be rich?

Although the answer may seem simple, because it would be enough to look at which ones generate the most wealth, the truth is that it is not so simple.

To create this list, several paths can be chosen, such as comparing the Gross Domestic Product (GDP), which is basically the sum of all the goods and services that an economy produces in a year.

Simply by size, it is clear that the world's largest economies are the United States and China , according to World Bank data.

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Now, if we divide that wealth by the number of inhabitants (which is the GDP per capita), the richest are Luxembourg, Switzerland and Macao .

Although all of the above is correct, many economists prefer to examine the economic health of a country, using the "purchasing power parity" per inhabitant, which considers the purchasing power of people in a given country.

"As we are interested in monitoring the well-being of individuals, we have a tendency to prefer the use of this indicator," World Bank economists Christoph Lakner, Espen Beer Prydz and Dean Jolliffe replied to BBC Mundo in an email.

In this context, the richest countries are Qatar, Macao and Luxembourg , followed by Singapore, Brunei and Kuwait.

The list is completed by the United Arab Emirates, Norway, Ireland and Switzerland.

The 10 richest countries in the world	Inhabitants' purchasing power (in US $)
Qatar	118,207
Macao	97,751
Luxembourg	94,920
Singapore	81,443
Brunei	71,788
Kuwait	68,861
United Arab Emirates	67,133
Norway	64,139
Ireland	63,301
Switzerland	57,427