OPEC was established in 1960 with the principal aim of coordinating petroleum policies and protecting the interests of member countries. It currently accounts for 40% of global crude oil production and 55% of internationally traded oil. Throughout its history, OPEC has shifted from having no major role in price setting before 1970 to gaining control of prices in the 1970s. It has faced challenges maintaining quotas and market share while balancing supply and demand fluctuations to keep oil prices stable.