Global Development Finance 2011: External Debt of Developing Countries is a continuation of the World Bank's publications Global Development Finance, Volume II (1997 through 2009) and the earlier World Debt Tables (1973 through 1996). As in previous years, GDF 2011 provides statistical tables showing the external debt of 128 developing countries that report public and publicly guaranteed external debt to the World Bank's Debtor Reporting System (DRS). It also includes tables of key debt ratios for individual reporting countries and the composition of external debt stocks and flows for individual reporting countries and regional and income groups along with some graphical presentations. GDF 2011 draws on a database maintained by the World Bank External Debt (WBXD) system. Longer time series and more detailed data are available from the Global Development Finance 2011 on CD-ROM and the World Bank open databases, which contain more than 200 time series indicators, covering the years 1970 to 2009 for most reporting countries, and pipeline data for scheduled debt service payments on existing commitments to 2017.