Kosovo has not yet fully recovered from the 1998–99 war and has failed since declaring independence in 2008 to build a stable economy. The Trepča mine complex has not recovered from its lost production during the war. Trepča once accounted for 70 percent of Kosovo's gross domestic product, but since the war ended in 1999, the partition of Mitrovica between Kosovar Albanians and Serbs loyal to Belgrade keeps most of Trepča's facilities closed. According to various statistics, the complex can not be reopened without at least $650 million of foreign investment to repair and update the smelters and refineries.