U.S. 4th-Quarter Growth Revised Up To 3.1 Percent : NPR The economy, as measured by the gross domestic product, grew at an annual rate of 3.1 percent in the October-December quarter, the Commerce Department said. That represents an upward revision from last month's 2.8 percent estimate for the same period. 03-26-2011 by gracegilroy Tags growth, percent, revised