International Financial Statistics Online(database available from the Georgetown University Library): This International Monetary Fund source provides historical and current financial information on member countries. Includes exchange rates, inflation and deflation, government finance, balance of payments, money and banking, and national income accounts.
QuandlA search engine for time-series data, specializing in financial, economic, and social topics. Searches and aggregates data published by hundreds of different sources.
Source OECD(Available from the Georgetown University Library) is the online publications portal of the Organisation for Economic Co-operation and Development. Contains over 1,500 books, 20 journals and newsletters, 10 statistical periodicals, reference works, and 600 interactive statistical data tables in over 25 database products published since 1998. Text can be searched by theme or country. Statistics can be searched by title and theme.
World Bank Open DataData includes more than 2,000 economic and data indicators from countries around the world. Much of the data goes back for fifty years or more. This is an excellent source to begin your research if you are looking for economic indicators from around the world.