may store both current and historical data which is important for many types of research. Many datasets are also retained for regulatory compliance. Most data archives are indexed and searchable. Increasingly data archives provide access to options which allow researchers to graph, map and visualise data in many different ways.
World Development Indicators - World Bank
Freely available database of development indicators, compiled from officially-recognized international sources by the World Bank. Includes current and times series data. WDI provides access to accurate global development data. Data estimates are available at national, regional and global levels. WDI is part of the World Bank Databank. Data can be visualised, and you can create tables, charts, and maps. To learn more take the Databank tutorial.