Texas exports rose 2.7 percent in real terms in the first six months of the year, fueled by a nascent economic recovery that surprised some shipping companies. Increased demand in the state and nation contributed to spikes in the cost of container, truck and rail freight shipments.

Exports have gone from a source of strength to a drag on the Texas economy. The state's real exports declined nearly 20 percent from their peak in second quarter 2008 through first quarter 2009, ending a five-year growth spurt.

Upturns in the Mexican and Canadian economies, coupled with the dollar's declining value, fed strong Texas export growth in the second half of 2009. The state's real exports increased 15.8 percent from the second to fourth quarter, and the United States' NAFTA partners played a key role.

Ike deals severe blow to Texas economy. Texas investment funding slips in 2nd quarter. Latin America, China lead Texas surge in overseas sales.