Qatar population was 2.6 million: 313,000 Qatari citizens and 2.3 million expatriates. Islam is the official religion of Qatar. The country has the highest per capita income in the world. Qatar is classified by the UN as a country of very high human development and is widely regarded as the most advanced Arab state for human development. Qatar is a high-income economy, backed by the world's third-largest natural gas reserves and oil reserves. Qatar has been ruled by the House of Thani since Mohammed bin Thani signed a treaty with the British in 1868 that recognised its separate status. Following Ottoman
Surat Thani only. Seatran Pier and Raja Pier are both located in Don Sak District, 65km (40mi) east of Surat Thani city centre. Surat Thani covers "tambon" Talad and Bang Kung, and parts of "tambons" Khlong Chanak, Bang Chana, Bang Baimai, Makham Tia, and all of Mueang Surat Thani District. The city is divided into 45 communities ("chumchon"). Surat Thani Surat Thani (, ) is a city in Amphoe Mueang Surat Thani, Surat Thani Province, southern Thailand. It lies 651 km south of Bangkok. It is the capital of Surat Thani Province. The city has a population of 128,179 (2009), and an