1. The document lists the gross domestic product (GDP) in 2011 at purchasing power parity (PPP) in millions of international dollars for 181 economies worldwide.
2. The United States had the highest GDP at $14,991,300 million, followed by China at $11,290,911 million and India at $4,503,069 million.
3. The World Bank database provides GDP at PPP figures to compare the relative size of economies globally based on their domestic purchasing power.