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Government revenue is estimated at US$1.9bn to US$2bn in nominal terms over 25 years. It has been estimated that at a 10% discount rate the net present value of the revenues will be six times higher than the net present value from the debt service, if all government equity was funded through concessionary lending. Revenues are expected to increase progressively from approximately US$10M in 2009 to US$110 to 150M per year at the end of the concession period in 2033. Thereafter the government will receive all revenues accruing to the project.