The WDI database, launched along with the World Bank’s Open Data initiative to provide free data to all users, includes more than 900 indicators documenting the state of all the world’s economies. The WDI covers education, health, poverty, environment, economy, trade, and much more.
"The WDI provides a valuable statistical picture of the world and how far we've come in advancing development," said Justin Yifu Lin, the World Bank’s Chief Economist and the Senior Vice President for Development Economics.  “Making this comprehensive data free for all is a dream come true."

Journalists can access the material before the expiration of the embargo through the World Bank Online Media Briefing Center at: http://media.worldbank.org/secure
Accredited journalists who do not already have a password may request one by completing the registration form at: http://media.worldbank.org/
The report and related material will be available to the public on the World Wide Web immediately after the embargo expires at: http://www.worldbank.org/data/wdi

World Development Indicators 2011, the 15th edition in its current format, aims to provide relevant, high-quality, internationally comparable statistics about development and the quality of people’s lives around the globe. This latest printed volume is one of a group of products; others include an online dataset, accessible at http://data.worldbank.org; the popular Little Data Book series; and DataFinder, a data query and charting application for mobile devices.

Fifteen years ago, World Development Indicators was overhauled and redesigned, organizing the data to present anintegrated view of development, with the goal of putting these data in the hands of policymakers, development specialists, students, and the public in a way that makes the data easy to use. Although there have been small changes, the format has stood the test of time, and this edition employs the same sections as the fi rst one: world view, people, environment, economy, states and markets, and global links.

Technical innovation and the rise of connected computing devices have gradually changed the way users obtain and consume the data in the World Development Indicators database. Last year saw a more abrupt change: the decision in April 2010 to make the dataset freely available resulted in a large, immediate increase in the use of the on-line resources. Perhaps more important has been the shift in how the data are used. Software developers are now free to use the data in applications they develop—and they are doing just that. We applaud and encourage all efforts to use the World Bank’s databases in creative ways to solve the world’s most pressing development challenges.

This edition of World Development Indicators focuses on the impact of the decision to make data freely available under an open license and with better online tools. To help those who wish to use and reuse the data in these new ways, the section introductions discuss key issues in measuring the economic and social phenomena described in the tables and charts and introduce new sources of data.

World Development Indicators is possible only through the excellent collaboration of many partners who provide the data that form part of this collection, and we thank them all: the United Nations family, the International Monetary Fund, the World Trade Organization, the Organisation for Economic Co-operation and Development, the statistical offices of more than 200 economies, and countless others who make this unique product possible. As always, we welcome your ideas for making the data in World Development Indicators useful and relevant for improving the lives of people around the world.

Shaida Badiee -Director Development Economics Data Group