... quarter century of nearly continuous warfare. Despite its abundant natural resources, output per capita is among the world's lowest. Subsistence agriculture provides the main livelihood for 85% of the population. Oil production and the supporting activities are vital to the economy, contributing about 45% to GDP and 90% of exports. Notwithstanding the signing of a peace accord in November 1994, violence continues, millions of land mines ... — The 2000 CIA World Factbook • United States. Central Intelligence Agency. Read full book for free!