Since 1998, democratic processes have been strengthened by enhancing regional autonomy and instituting the country's first direct presidential election in 2004. Political, economic and social instability, corruption, and instances of terrorism (the deadliest being the 2002 Bali bombings) remained problems in the 2000s; however, the economy has performed strongly in the last 15 years. Although relations among the diverse population are mostly harmonious, acute sectarian discontent and violence remain a problem in some areas. A political settlement to an armed separatist conflict in Aceh was achieved in 2005 following the 2004 Indian Ocean earthquake and tsunami that killed 130,000 Indonesians.