The country's total liquid foreign reserves surged $170 million to reach $20.522 billion end of the last week ended on March 4. According to State Bank of Pakistan (SBP), during the week under view, SBP's liquid foreign exchange reserves increased by $157 million to $15.664 billion compared to $15.507 billion in the previous week. Reserves held by the banks posted an increase of $12.5 million to $4.858 billion.