Fuels are products that directly or indirectly affect all sectors of the economy. Private companies must consider the prices of the same among their marketing and transportation costs. And consumers should consider them among the transportation costs in their budget.

If gasoline is the blood of the country's productive and commercial sector, credit is the blood that keeps the economy in general moving. Interest rates affect the investment and consumption decisions of domestic agents. And the exchange rates affect the import and export decisions of the productive sectors.

In open economies, the external sector is always one of the most importants. And today, with rare exceptions, there are no closed economies. The exports of a country are its salary. And the level of these determines in general the amount of currency to which it have access. With these currencies the country pays for its imports.