consequence of peaceful accords under the support of the General Agreement on Tariffs and Trade {GATT} and in this way the World Trade Organization {WTD}, normal tax levels were logically decreased to around T96 during the nal part of the twentieth hundred years, and some other exchange limitations were additionally eliminated. The limitations that remain are by the by of major monetary signicance: among other estimates,[31] the World Bank assessed in 2004 that the evacuation of all exchange limitations would yield advantages of more than $500 billion a year by 2015.[32][needs update]