The data and analysis presented in this edition of Global Development Finance are based on actual flows and debt related transactions for 2010 reported to the World Bank Debtor Reporting System (DRS). Over the years, the external financing options available to developing countries have evolved and expanded, and so too has the demand for timely and relevant data to measure the activity of public and private-sector borrowers and creditors. Recurrent debt crises caused by adverse global economic conditions or poor economic management have demanded solutions, including debt restructuring and, in the case of the poorest, most highly indebted countries, outright debt forgiveness, formulated on the basis of detailed and robust information on external obligations.