Cosmic evolution of the SFR density, ρ_SFR, in this study (black stars). Blue and red stars represent the contribution to ρ_SFR of the regions between 1 and 2 HLR and within the inner 0.5 HLR, respectively. Other results are from recent determinations by Gunawardhana et al. (2013, 2015) and their compilation (gray points), and the redshift evolution of ρ_SFR from Hopkins & Beacom (2006; the top two gray dotted lines are ± 1σ of their relation); Madau & Dickinson (2014; middle gray full line); Fardal et al. (2007; bottom gray dashed line); from the fossil record method applied to SDSS data by Panter et al. (2003; gray squares); and from the work of Driver et al. (2017) for data from GAMA, G10-COSMOS, and 3D-HST (orange dots). When needed, literature values have been scaled to a Chabrier IMF.