Real gross domestic product (GDP) increased at an annual rate of 2.1 percent in the fourth quarter of 2019 (table 1), according to the "advance" estimate released by the Bureau of Economic Analysis. In the third quarter, real GDP increased 2.1 percent. The GDP estimate released today is based on source data that are incomplete or subject to further revision by the source agency (see “Source Data for the Advance Estimate” on page 3). The "second" estimate for the fourth quarter, based on more complete data, will be released on February 27, 2020.