 WASHINGTON, Aug. 19, 2021 PRNewswire -- The full-year 2021 real GDP growth forecast was revised modestly downward due in part to the expectation that COVID-related disruptions to consumer spending and supply chains will more greatly hinder economic activity in the second half of the year than previously forecast, according to the August 2021 commentary from the Fannie Mae OTCQB: FNMA Economic and Strategic Research ESR Group. A weaker than previously anticipated second quarter real GDP reading also contributed to the downward revision to the full-year 2021 growth outlook from last months 7.0 percent to this months 6.3 percent. 