KARACHI - The dollar-rupee exchange rate parity peaked at record high on Friday as the rupee plunged to lowest-ever against the US dollars in the open market. As anticipated by the currency analysts, the Pak rupee continued to shed value versus the US dollar, falling to Rs 77 in the local forex market on Friday. A currency dealer at local money exchange branch told The Nation that  "uncertainty regarding the rescue and recovery of the national currency in the exchange trade with the US currency is still prevalent in the capital market because the manipulators and profit-margins-seeking mafia in the domestic liquid markets are more active to make lots of money through heavily buying and selling of the said currency which is crucial for the survival of those pseudo investors these days", he said. "The most irritating thing for both market experts and genuine investors is that the constant fluctuations being witnessed in the dollar-rupee exchange rate are not in line with the certain market variables", he added.   The daily forex trading report compiled by Khanani & Kalia Pvt International Ltd, revealed that demand of US dollar and political uncertainty continued to hurt the national currency as dollar crossed the barrier of Rs.76 in the open market. The American currency kicked off new day's trading at Rs.75.70 paisa, continued to break records and was trading at Rs.76.50 paisa at close of markets on Friday. The rupee lost Rs.1.35 versus dollar in the interbank dealings on Friday. Rupee continued to remain under pressure versus greenback in the interbank market dealings. The American dollar started off new day's trading at its Wednesday's closing rate of Rs.75, continued to gain and was trading at Rs.76.35 paisa at close of markets on Friday, report said. According to JS Research, during the outgoing week, Rupee depreciated by 5% against US dollar amid buying by commercial banks to meet their payment obligations. So far this year Pakistan currency has weakened by 23.1% due to declining forex reserves. As a result, foreign investors who are net sellers in Pakistan market since last few months further trimmed their position. Last week they bought shares worth US$22mn and sold US$31.6mn. To date in 2008 foreigners have sold (net of buying) shares valuing US$315mn at Karachi bourse. On the international desks, the dollar headed for a fifth weekly gain against the euro, its longest winning streak in more than two years, on speculation U.S. consumer spending will keep the world's biggest economy out of recession.