The primary World Bank collection of development indicators, compiled from officially-recognized international sources, presents the most current and accurate global development data available. World Development Indicators (WDI) is the World Bank's flagship statistical database and establishes the benchmark against which development progress is measured. WDI aims to provide relevant, high-quality, internationally comparable statistics about development and the quality of people’s lives around the globe. WDI data are presented by country, by topic, and by indicator. In addition to the descriptions of topics, indicator definitions, and data sources, “about the data” notes put indicators in the development context. In the “about the data” notes, information is provided on the usefulness of data, limitations, and potential weaknesses in the data.


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