WASHINGTON (AP) – The economy shifted to a higher gear in the spring, growing at its fastest pace in nearly a year as foreign buyers snapped up U.S. exports and tax rebates spurred shoppers at home.

The Commerce Department reported Thursday that gross domestic product, or GDP, increased at a 3.3 percent annual rate in the April-June quarter. The revised reading was much better than the government’s initial estimate of a 1.9 percent pace and exceeded economists’ expectations for a 2.7 percent growth rate.

The rebound comes after two dismal quarters. The economy actually shrank in the final three months of 2007 and limped into the first quarter at a feeble 0.9 percent pace. The 3.3 percent growth in the spring was the best performance since the third quarter of last year, when the economy was chugging along at a brisk 4.8 percent pace…