IIT (Sectoral Marginal)
IIT (Aggregate Marginal)
Regional Market Share
The import share tells us how important a particular partner is in terms of the overall import profile of an economy. In the case
of intra-regional import shares, increases in the value over time are sometimes interpreted as an indicator of the significance of a regional
trading bloc if one exists, or as a measure of potential if one is proposed. The import share is the percentage of the destination region's
imports that are bought from the source region. It can be calculated on the basis of total trade, or an individual commodity.
The import share is the percentage of imports from the region of interest (the source) to the region under study (the destination) in the total imports of the destination.
Range of values:
Takes a value between 0 and 100 per cent, with higher values indicating greater importance of selected trading partner.
For further note on this indicator, including an example and formula, see the relevant section of Trade Statistics in Policymaking: A Handbook of Commonly Used Trade Indices and Indicators.