The United Arab Emirates is a federation of 7 Arab emirates located in the Persian Gulf. The UAE has a population of 4.5 million people and has experienced strong economic growth in recent years, with a GDP growth rate of 8.5% in 2007. The UAE economy is primarily based on oil and natural gas exports, which account for most of the country's GDP. The country maintains a welfare system for citizens but relies heavily on foreign workers, who make up 80% of the population.