Norway is a constitutional monarchy located in Northern Europe with a population of nearly 5 million. It has a highly developed economy and ranks highly in quality of life indexes. Norway has a mixed economy and sizable sovereign wealth fund from oil and gas revenues. It is not an EU member but participates in the European single market. Exports include petroleum, machinery, metals, and fish, mainly to EU countries. The economy relies heavily on foreign trade, including oil and gas exports, and maintains close economic ties with the EU.