The government continues to balance the need for economic loosening against a desire for firm political control. It has undertaken limited reforms to increase enterprise efficiency and alleviate serious shortages of food, consumer goods, and services. A major feature of the economy is the dichotomy between relatively efficient export enclaves and inefficient domestic sectors. The average Cuban's standard of living remains at a lower level than before the depression of the 1990s, which was caused by the loss of Soviet aid and domestic inefficiencies. The government reluctantly allows a large dollar market sector, fueled by tourism and remittances from Cubans abroad.