The value of world exports has increased by nearly five times in the 18 years from 1993 to 2011, according to the World Trade Organization. Exports in 1993 were $ 3,676 billion; rising to $17,816 billion in 2011. There are many factors driving this dramatic rise in exporting. They include lower sourcing and production costs in some developing countries and rising consumption in growing economies. This leads supply chain executives to consider new sourcing and distribution models and then to reexamine and optimize those network models on a more regular basis to balance cost and opportunity.