The Great Recession forced U.S. companies to think in new ways about their growth and survival in the coming years. In 2010, the first year of the recovery, U.S. domestic demand remained sluggish, so American businesses looked for clients outside their borders, especially in emerging markets, where most global growth has been taking place in recent years. As a result, U.S. exports increased rapidly in the first year of recovery, by more than 11 percent in real terms, the highest growth since 1997.
http://www.brookings.edu/up-front/posts/2012/03/08-exports-istrate