The number of years a country has been defined as a top under-aided country over the period from 2006 to 2016. Top under-aided countries are defined by the OECD are those which are are "underfunded" by need relative to others. This is assessed on the basis of multiple aid allocation models: the Egalitarian, Performance-based allocation (PBA), UNDP, and Collier-Dollar poverty allocation (CD) model. The top under-aided countries in a given year are defined here as those identified as underfunded on the basis of 3 or more of the allocation models.
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