A survey released by the Harvard Institute for International Development in September 2000 found the shadow economy plays a significantly larger role in the Balkans than in other regions of Europe.
Istraživanje koje je objavio Harvardski institut za međunarodni razvoj u septembru 2000, ukazuje da siva ekonomija igra mnogo veću ulogu na Balkanu nego u drugim oblastima u Evropi.