The UAE's large hydrocarbon wealth gives it one of the highest GDP per capita in the world and Abu Dhabi owns the majority of these resources—95% of the oil and 92% of gas. Abu Dhabi thus holds 9% of the world's proven oil reserves (98.2bn barrels) and almost 5% of the world's natural gas (). Oil production in the UAE was about 2.3 million barrels per day (BPD) in 2010, and projects are in progress to boost production to 3m BPD. In recent years, the focus has turned to gas as increasing domestic consumption for power, desalination and reinjection of gas into oil fields increases demand. Gas extraction is not without its difficulties, however, as demonstrated by the sour gas project at Shah where the gas is rich in hydrogen sulfide content and expensive to develop and process.