The Pakistani rupee sank to an all-time low against the dollar Friday on high oil prices and forex reserve fears as the country repaid nearly $400 million to the International Monetary Fund. The rupee fell to 94.75 to the greenback in trading in Karachi on Friday, down from 94.70 on Thursday, and has now lost 33 percent of its value against the US currency since March 2008. “The increase in the international oil price… has affected Pakistan’s foreign exchange reserves and they could suffer further with the repayment of IMF’s installment due today,” said analyst Mohammad Sohail of Topline Securities. “These factors have contributed to the panic in the currency market.” In Asian oil markets on Friday, Brent North Sea crude for October delivery stood at $114.54 a barrel, while New York’s main contract, light sweet crude for delivery in October was at $95.68.