the aftereffect of peaceful accords under the sponsorship of the General Agreement on Tariffs and Trade (GATT) and along these lines the World Trade Organization (WTO), normal levy levels were dynamically decreased to around 7% during the final part of the twentieth century, and some other exchange limitations were additionally taken out. The limitations that remain are by and by of major monetary significance: among other estimates,[31] the World Bank assessed in 2004 that the expulsion of all exchange limitations would yield advantages of more than $500 billion per year by 2015.[32][needs update]