These indicators are then cross multiplied and summed to estimate a given importer’s Pll. Given that our sample includes only 89 developing country exporters, including Mexico which became an OECD Member, including 33 LDCs (of 49), and the corresponding 10 importers, it is desirable to assess the degree to which these countries represent global population, poverty, and trade (for each importer). The importer’s share of imports represented implies the theoretical maximum Pll for that importer, because it is assumed that the share of income accruing to the poor in exporting developing countries was proportional to the imports (which may be considered optimistic).