Possible Clues:

• Pat Edgar disturbed by difference in what's coming in and going out
• Difference in what's coming in and going out of opening behind traffic
• Domestic manufacturer's concern
• Unfavourable import-export balance
• Export shortfall
• Result of imports exceeding exports
• Raised concern hiding old deficit
• Amount by which imports exceed exports
• Stop aged artefacts heading west, hampering balance of payments data
• Import value minus export value