This oil cartel controls 40% of world production
... "By this summer, OPEC may have 
to start pumping much more oil to avoid losing control of the market... [DOC] [TLE] OPEC - The World's Oil Cartel - English Online [PAR] OPEC's aim is to regulate the amount of oil that member nations produce ... 
Today OPEC still controls about 60% of the world's oil reserves and produces 40
% of... [DOC] [TLE] Marketplace: Oil Is a Slippery Business | EconEdLink [PAR] OPEC is generally seen as the primary institution that controls oil prices.