ISLAMABAD   -    Foreign exchange reserves held by State Bank of Pakistan (SBP) fell by $389 million to $7.612 billion, data released by the SBP said on Thursday.  It said during the week ending July 19, the SBP’s reserves decreased due to external debt servicing and other official payments. The net foreign reserves held by commercial banks stood at $7.25 billion as on July 19, while the net liquid foreign reserves held by the country stood at $14.862 billion.