All G20 member countries send representatives to the G20 summit, including the United States, Canada, the United Kingdom, France and Germany. Each summit also includes representatives from a selection of guest countries.
The G20 comprises 20 member countries and regions representing both developed and emerging economies. Its member countries are the U.S., the U.K., Turkey, South Africa, Saudi Arabia, Russia, Mexico, South Korea, Japan, Italy, Indonesia, India, Germany, France, China, Canada, Brazil, Australia and Argentina. Although Germany, France, Italy and the U.K. are all members of the European Union, the EU also holds G20 membership, representing the remaining EU countries.
Member countries can always send members to G20 summits. However, a few guest countries receive invitations each year. For example, Spain, Malaysia, Zimbabwe, Senegal and Singapore received invitations for the 2015 summit in Turkey.
G20 countries send leaders, finance ministers and central bank governors as representatives to summits. The EU sends the Council president and a representative from the European Central Bank. Each member country holds an equal voice in the organization; however, the G20 does not pass formal resolutions. G20 summits usually take place annually, although there have been exceptions during international finance crisis situations that required additional attention.
The G20 is a relatively new organization as of 2015. The first summit took place in 1999 in Berlin, Germany.