Five Facts about Value-Added Exports and Implications for Macroeconomics and Trade Research
揭示了总值出口与增加值出口之间的五个关键差异，这些差异随时间扩大且因国家和贸易伙伴而异，对理解跨国冲击传导、贸易平衡调整、贸易摩擦影响及贸易政策有重要启示。
Due to the rise of global supply chains, gross exports do not accurately measure the amount of value added exchanged between countries. I highlight five facts about differences between gross and value-added exports. These differences are large and growing over time, currently around 25 percent, and manufacturing trade looks more important, relative to services, in gross than value-added terms. These differences are also heterogenous across countries and bilateral partners, and changing unevenly across countries and partners over time. Taking these differences into account enables researchers to obtain better quantitative answers to important macroeconomic and trade questions. I discuss how the facts inform analysis of the transmission of shocks across countries; the mechanics of trade balance adjustments; the impact of frictions on trade; the role of endowments and comparative advantage; and trade policy.