Kuwait has a wealthy petroleum-based economy. Kuwait is one of the richest countries in the world. The Kuwaiti dinar is the highest-valued unit of currency in the world. According to the World Bank, Kuwait is the fifth richest country in the world by gross national income per capita, and one of five nations with a GNI per capita above $70,000. As a result of various diversification policies, petroleum now accounts for 43% of total GDP and 70% of export earnings. The biggest non-oil industry is steel manufacturing. 