Fiscal policy, based on cash-budgeting, aims over the medium term at preserving fiscal sustainability, while allowing for some modest increase in infrastructure and social spending. Given the fiscal framework, Government finances have improved. There are, however, unresolved issues concerning ghost workers and the accounting for diamond revenues. Total revenue increased from US$ million in 2009 to US$ billion in 2010, underpinned by increases in income and corporate taxes. Despite the progress made on the fiscal side, difficult challenges still remain, including a rising wage bill and the limited fiscal space for infrastructure and priority social programs