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New addition to UNCTADstat: Merchandise trade specialization and correlation indices

18 March 2013

These new annual indicators enable users to measure the degree of net exportation by product and to monitor trade similarity among economies. The indicators are commonly used to measure and analyse trade performance and degree of competition/dependencies between one country and another through trade.

​The trade specialization index compares the net flow of goods (exports minus imports) to the total flow of goods (exports plus imports). 

This index removes bias of high exports values due to significant re-exports activities, thus is more suitable to identify real producers instead of any intermediate traders. 

Trade correlation index is defined as a simple correlation coefficient between economy A and economy B’s trade specialization index. 

The data cover the period 1995-2011 for more than 120 economic/trade groups and over 360 product groups.The update is done twice a year: in June and October.