Scenarios I–V and their different subsidy levels.
|I||Current||Current: fuel-tax exemptions, grants, general services|
|II||Optimal (MEY)||Current: fuel-tax exemptions, grants, general services|
|III||Optimal (MEY)||General services (removing fuel tax exemption subsidies and grants)|
|IV||Optimal (MEY)||No subsidies|
|V||Optimal (MEY)||Double current subsidies|
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