The Lost Decade (失われた10年, Ushinawareta Jūnen) was a period of economic stagnation in Japan caused by the asset price bubble's collapse in late 1991. The term originally referred to the 1990s, but the 2000s (Lost 20 Years, 失われた20年) and the 2010s (Lost 30 Years, 失われた30年) have been included by commentators as the phenomenon continued.