The traditional sugar industry, upon which the island's economy has been based for three centuries, is centered elsewhere on the island and controls some three-fourths of the export economy. But light manufacturing facilities, meat-packing plants, and chemical and pharmaceutical operations are concentrated in Havana. Other food-processing industries are also important, along with shipbuilding, vehicle manufacturing, production of alcoholic beverages (particularly rum), textiles, and tobacco products, particularly the world-famous Habanos cigars. Although the harbors of Cienfuegos and Matanzas, in particular, have been developed under the revolutionary government, Havana remains Cuba's primary port facility; 50% of Cuban imports and exports pass through Havana. The port also supports a considerable fishing industry.