Exchange rate of the US dollar against the Kuwaiti dinar stood at KD 0.281 while the euro was down to KD 0.370 compared to Wednesday\'s figures, said the Central Bank of Kuwait (CBK) on Thursday. The exchange rate of the sterling dropped to KD 0.456. The Japanese yen remained unchanged at KD 0.003 and the Swiss franc was down to KD 0.305.