World Bank Open Data/World Bank Open Data is an authoritative release of World Bank open data in multiple languages, including Chinese, such as GDP, population, economic situation of countries, etc., which is free and open to all. The data page also allows users to download all the data displayed as a package. The Country page provides all the data for all years for a country, the Theme page provides each indicator for all countries and years for that theme, and the Indicator page provides all the data for all years for all countries.