Material and economic damages brought by the conflicts were catastrophic. Bosnia and Herzegovina had a GDP of between $8–9 billion before the war. The government estimated the overall war damages at $50–$70 billion. It also registered a GDP decline of 75% after the war. Some 60% of the housing in the country has been either damaged or destroyed, which proved a problem when trying to bring all the refugees back home. Bosnia also became the most landmine contaminated country of Europe: 1820 km2 of its territory were contaminated with these explosives, which represent 3.6% of its land surface. Between 3 and 6 million landmines were scattered throughout Bosnia. Five thousand people died from them, of which 1,520 were killed after the war.