In well-to-do Bahrain, petroleum production and refining account for about 60% of export receipts, 60% of government revenues, and 30% of GDP. With its highly developed communication and transport facilities, Bahrain is home to numerous multinational firms with business in the Gulf. Bahrain is dependent on Saudi Arabia for oil granted as aid. A large share of exports consist of petroleum products made from refining imported crude. Construction proceeds on several major industrial projects. Unemployment, especially among the young, and the depletion of oil and underground water resources are major long-term economic problems.