KARACHI: Rupee hit an all-time high of 113 against the US dollar in the open market on Monday as the exchange companies struggled to keep the greenback’s supply intact after the central bank restricted their currency imports.The rupee/dollar parity touched as high as 113.50 in the kerb market in an intraday trade. However, dealers closed the rupee sale at 112.40 and buying at 112.80 after some correction.