Combining all UI components, we find that, overall, the UI program closed 0.183 of the gap in real GDP caused by the recession. There is reason to believe, however, that for this particular recession, the UI program provided stronger stabilization of real output than in many past recessions because extended benefits responded strongly. Multiplier effects in real GDP were estimated to average 2.0 for regular UI benefits and also 2.0 for extended benefits.
https://wdr.doleta.gov/research/FullText_Documents/ETAOP2010-10.pdf