WTO
The World Trade Organization deals with the rules of trade between nations at a global or near-global level and was established in 1994. It has 162 members (February 2016). Its main tasks are to lower trade barriers and the liberalization of international trade. It collects data on trade from various different sources on an annual basis, unifies and publishes them. Data used in the calculation indicate the total import or export value of a country in US dollars.