Modern economies are heavily reliant on oil and its byproducts for transportation, electricity, and manufacturing goods. Because of this, the cost and availability of oil is a large factor in a nation's economy.
A nation's Oil Supply and Oil Demand both alter the Oil Price for that nation, with high demand raising the price and high supply reducing it. When the price of oil is above or below 55%, the effects of the price will be reflected in the nation's GDP, with high oil prices reducing the GDP by up to 18% and low oil prices raising the GDP by up to 22%.