The World Debt Tables consists of two volumes. Volume 1 contains analysis and commentary on recent and prospective developments in international finance for developing countries, together with summary statistical tables for selected regional and analytical groups comprising 151 developing countries. Volume 2 contains statistical tables on the external debt and flows of the 136 countries that report public and publicly guaranteed debt under the Debtor Reporting System (DRS). Portugal is now classified as a high-income country. For the convenience of readers, charts at the beginning of volume 1 summarize graphically the relation between the debt stock and its components; the computation of net flows, aggregate net resource flows, and aggregate net transfers; and the relation between net resource flows and the balance of payments. The economic aggregates presented in the tables are prepared for the convenience of users; their inclusion is not an endorsement of their value for economic analysis.