The country's total liquid foreign exchange reserves posted an increase of $128 million during last week. According to State Bank of Pakistan (SBP) weekly forex report issued Thursday, the country's total liquid foreign exchange reserves reached $18.726 billion mark on September 11, 2015 up from $18.598 billion as on September 4, 2015. During the week under review, the SBP's liquid forex reserves increased by $134 million to $13.69 billion compared to $13.556 billion in the previous week. However, reserves held by banks declined by $5.7 million to $5.036 billion at the end of last week.