How much is a Second Class stamp? proscar generic finasteride effetti collaterali In late 2012, Petrobras debt exceeded its own internal limitof 2.5 times earnings before interest, taxes, depreciation andamortization (EBITDA). Debt soared as domestic fuel subsidies,declining output and a $237 billion expansion plan, the world'slargest corporate spending program, crimped revenue, even ascosts soared. Significantly increased production is stillseveral years away.