ISLAMABAD-The cash-starved government has no other option than to borrow from external as well as internal resources to run its expenditures, as country's total external debt has gone upto $59.5 billion while total public debt has increased to Rs 10020 billion by the end of March 2011. According to the latest economic survey 2010-2011, the countrys external debt has increased by $3.6 billion during the first nine months (July-March) period of the outgoing financial year 2010-2011 and totalled at $59.5 billion by the end of March 2011. The external debt was $55.9 billion of June 2010, which revealed that it has increased by 6.4 per cent only in nine months period. Meanwhile, the public debt (internal debt) has enhanced by Rs 1162 billion in the first nine months (July-March) of the year 2010-2011, reaching a total outstanding amount Rs 10020 billion an increase of 13.1 per cent. The public debt has decreased to 55.5 per cent by end of March 2011 after hovering around to 60 per cent of GDP for three years. The primary source of increase in public debt in July-March 2010-2011 has been a sharp rise in local currency component that accounted for 69.7 per cent of the total increase in total public debt. This was primarily due to the slower disbursement from multilateral and bilateral donors and higher than budgeted fiscal deficit. Higher fiscal deficit and enormous slippages in the revenue and expenditures targets remained key problems during the July-March period of the year 2010-2011. According to the survey, since 2006-07, domestic debt witnessed a sharp rise with consequent build-up in the interest payments. Interest payments of GDP has peaked to 4.4 per cent of GDP in 2008-09 but since then declined persistently to 2.5 per cent of GDP in 2010-11. This also incorporates impact of higher nominal GDP growth.