With hardly any domestic hydrocarbon reserves, Central American countries rely heavily on imported oil for their energy needs. The countries of Central America, including Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama, have traditionally been dependent upon agricultural exports for a large portion of their economic activity. However, in recent years, these countries have begun to diversify their economies towards manufacturing and tourism. As a result, the countries have been especially affected by high world oil prices in recent years. Partially offsetting this, many have been able to secure preferential pricing for oil from Venezuela and Mexico. Central America does have a large amount of installed hydroelectric capacity, but the region still relies upon imports for some three-fourths of its total energy consumption. Despite the lack of sizable oil reserves, Central America remains an important transit center for oil via the Panama Canal and as a potential energy transit center between North and South America.