World Bank high-income economy

^ “High-technology exports”. World Bank Open Data. 2023年4月15日閲覧。 ^ “Country and Approximate Number of Patent Applications”. World Intellectual

Greek shipping industry, one of the largest in the world, accounts for more than 30 percent of the income derived from services. It is exempt from government

Afghanistan's Growth”. World Bank. 05-08-2019閲覧。 ^ “AAN Q&A: An established industry – Basic facts about Afghanistan's opium-driven economy”. Afghanistan Analysts

2013閲覧。  ^ Maddison, Angus (2006年). “Historical Statistics for the World Economy”. The Netherlands: The Groningen Growth and Development Centre, Economics

Festival. Travel America, World Publishing Co., Gale Group. ^ “Economic Impact - Natural Resources Boost Michigan's Economy”. Michigan.gov. 2012年11月3日閲覧。