KARACHI (Reuters) - Pakistan's foreign exchange reserves rose to a record $18.30 billion in the week ending July 23, from $18.23 billion the previous week, a senior State Bank official said on Thursday. The previous record was in week ending July 2 and at $18.25 billion. Reserves held by the SBP jumped to $14.74 billion from $14.71 billion a week ago, while those held by commercial banks rose to $3.56 billion from $3.52 billion, said SBP chief spokesman Syed Wasimuddin. Pakistan's foreign exchange reserves were boosted in June by inflows of $411 million, including a loan of $191.9 million from the World Bank, and another loan of $196.8 million from the ADB. Higher export proceeds and a record inflow of remittances have helped forex reserves grow steadily. According to official data, remittances rose to a record $11.2b in 2010/11 fiscal year, an increase of 25.77pc compared with the same period last year.