In 1990, industry produced 20.4 percent of gross domestic product (GDP). Agriculture accounted for 5.8 percent. More of the output of these sectors has been exported, or has the potential for export, than that of other sectors (with the exception of tourism). Their role in the economy and the trend toward increasing foreign trade are therefore crucial. In 1990 they accounted for 29.6 percent and 8.5 percent, respectively, of the business sector's GDP. The rest of the business sector during this period consisted of transport and communications (15.2 percent), power and water (3.9 percent), and building (9.8 percent), little of which is internationally traded. Services and trade accounted for 33.0 percent.