From the BEA: official release

From the BEA:

Real gross domestic product -- the output of goods and services produced by labor and property located in the United States -- increased at an annual rate of 2.0 percent in the third quarter of 2012 (that is, from the second quarter to the third quarter), according to the "advance" estimate released by the Bureau of Economic Analysis. In the second quarter, real GDP increased 1.3 percent.

The increase in real GDP in the third quarter primarily reflected positive contributions from personal consumption expenditures (PCE), federal government spending, and residential fixed investment that were partly offset by negative contributions from exports, nonresidential fixed investment, and private inventory investment. Imports, which are a subtraction in the calculation of GDP, decreased.

The acceleration in real GDP in the third quarter primarily reflected an upturn in federal government spending, a downturn in imports, an acceleration in PCE, a smaller decrease in private inventory investment, an acceleration in residential fixed investment, and a smaller decrease in state and local government spending that were partly offset by downturns in exports and in nonresidential fixed investment.