25 Richest Country in the World (No. 23)

°°Bahrain°°

• GNI per capita: $41,557

• 2017 GDP: $64.7 billion (100th out of 196 countries)

• Population: 1.5 million

• Life expectancy at birth: 77.0 years

Bahrain's high gross national income per capita of $41,557 is bolstered by the country's very low unemployment rate. Less than 1% of the labor force in Bahrain is out of a job -- the second lowest unemployment rate of any country on this list. The country relies heavily on natural resources, particularly petroleum. Of the nation's exports in 2017, 38% came from refined petroleum. Iron ore and aluminum exports accounted for another 5.6%.

Bahrain's population is growing faster than any other country on this list, ranking second in the world with an annual population growth of 4.6%, more than four times the rate of the world's annual population growth.