http://datacatalog.worldbank.org/?display=graph

Data Catalog 

 The World Bank's Open Data initiative is intended to provide all users with access to World Bank data, according to the Open Data Terms of Use. The data catalog is a listing of available World Bank datasets, including databases, pre-formatted tables, reports, and other resources.

Here are a few sets:

Research Datasets and Analytical Tools: Various specialized datasets compiled for World Bank research activities, sorted by topic. Many datasets are in raw unprocessed formats, and are specific in scope and coverage 

Manufactures Unit Value Index (MUV Index) - A proxy for the price of developing country imports of manufactures in U.S. dollar terms, used to assess cost escalation for imported goods. Update twice a year, the index is a weighted average of export prices of manufactured goods for the G-5 economies, with local-currency based prices converted into current U.S. dollars using market exchange rates. Contains historical data from 1960 through 2007 and projections through 2020. 

International Debt Statistics: Summary and Country Tables - Special summary tables present cross-country comparisons of key debt statistics and composition of total external debt stocks. 

And there are a load more...