Estudios estadisticos y prospectivos sent id Nations publication, Sales No. For each of the income variables to be decomposed, it indicates the annual change observed in the gap between the top and bottom quintiles and between the start and end years, and the percentage of this change attributable to each factor analysed. Paraguay was the only country where the change in the percentage of adults per household accounted for close to 50% of the decline in the per capita income gap. In the other countries, the contribution of this factor did not exceed 20%, and in some it actually worsened distribution.