A good start to look for economic data are always the following three addresses:
- World Bank - Research Datasets
- IMF - Data and Statistics
- National Bureau of Economic Research
A nice summary of dataset links for development economists can be found at:
Edit:
The World Bank decided last week to open up a lot of its previously non-free datasets and published them online on its revised homepage. The new internet appearance looks pretty nice as well.
- The World Bank - Open Data
