Vietnam Exports of Goods, % change. Units: Percent change. Multiplier: . Estimates begin after 2015 . This data is sourced from www.opendataforafrica.org where it is offered under an open data licence (www.opendataforafrica.org/legal/termsofuse). Percent change of volume of exports of goods refers to the aggregate change in the quantities of exports of goods whose characteristics are unchanged. The goods and their prices are held constant, therefore changes are due to changes in quantities only. [Export and Import Price Index Manual: Theory and Practice, Glossary] Source: National Statistics Office Latest actual data: 2015 Base year: 2005 Methodology used to derive volumes: Deflation by unit value indexes (from customs data) Formula used to derive volumes: Laspeyres-type Chain-weighted: No Trade System: General trade Excluded items in trade: Other; Oil coverage: Primary or unrefined products;Secondary or refined products; Valuation of exports: Free on board (FOB) Valuation of imports: Cost, insurance, freight (CIF) Primary domestic currency: Vietnamese dong Data last updated: 08/2016.