Trade is the flow of goods and services thus we need to look at Cash Statements rather than Balance Sheets.  History shows there will always be a larger flow of cash from resource to resource-user regions.  (Tho' I concede the current situation increases that flow.)  Mostly, IMO, from the fact there are many more potential and actual resource regions producing, e.g., wheat, than resource-user regions producing, e.g., iPods.  Also resource regions tend to be over-populated with respect to the per capita current market value of their goods in international trade.

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre

Surely you mean "fine us for parking the space junk we send them"?

_{It is rightly acknowledged that people of faith have no monopoly of virtue - Queen Elizabeth II}