News release: "Real gross domestic product -- the output of goods and services produced by labor and property located in the United States -- decreased at an annual rate of 6.1 percent in the first quarter of 2009, (that is, from the fourth quarter to the first quarter), according to advance estimates released by the Bureau of Economic Analysis. In the fourth quarter, real GDP decreased 6.3 percent. The Bureau emphasized that the first-quarter “advance” estimates are based on source data that are incomplete or subject to further revision by the source agency. The first-quarter “preliminary” estimates, based on more comprehensive data, will be released on May 29, 2009. The decrease in real GDP in the first quarter primarily reflected negative contributions from exports, private inventory investment, equipment and software, nonresidential structures, and residential fixed investment that were partly offset by a positive contribution from personal consumption expenditures (PCE). Imports, which are a subtraction in the calculation of GDP, decreased."