The United Arab Emirates (UAE) is located in Western Asia, bordering Oman and Saudi Arabia. The UAE has a federal monarchy system of government with Abu Dhabi as its capital and Arabic as its official language. Dubai is the largest city and UAE has a GDP of $412.35 billion, ranking 19th globally. The country's economy relies heavily on oil exports as well as tourism, which welcomed over 10 million visitors in 2013. Islam is the predominant religion in UAE, comprising about 77% of the population.