The G8 is a group formed in 1975 consisting of eight highly industrialized countries - France, Germany, Italy, the UK, Japan, the US, Canada, and Russia. The group meets annually at the G8 Summit to discuss global economic issues and security concerns. Membership has expanded over time from the original six countries (G6) to include Canada and Russia. The presidency of the G8 rotates annually among member countries. The G8 represents about 14% of the world population but 60% of global GDP. Critics argue it focuses only on industrialized nations and lacks representation from emerging economies like China and India.