Relations between Serbs and Albanians, who were the majority population, were often tense during the 20th century. They came to a head in the Kosovo War of 1999, during which the city suffered heavy damage and mass killings. More than 80 percent of the total 5280 houses in the city were heavily damaged (1590) or destroyed (2774). It suffered further damage in violent inter-ethnic unrest in 2004.