By contrast, the territories with the best results are usually the national capitals or largest metropolitan areas. Peru and the Plurinational State of Bolivia. For a description of the methodology, see ECLAC (2017b| annex 1. The population in the high-development bracket amounts to 158 million, representing 32% of the total population of the eight countries and generating 47% of their GDRThe differences between the strata are also very marked in terms of the social indicators of life expectancy, infant mortality, illiteracy and access to drinking water (see figure V.2).