Evolution of SFR_UV/SFR_tot for statistical samples of galaxies at z < 4. SFR_tot is the sum of the attenuated (SFR_IR) and non-attenuated (SFR_UV) emission. Studies that included mass-dependent measurements are Wuyts et al. (2011b), Pannella et al. (2009, 2015), Whitaker et al. (2014), McLure et al. (2018), and Bouwens et al. (2016). For these studies, the error-bars show the range of SFR_UV /SFR_tot for galaxies with stellar masses 10.2 < log(M_*∕M_⊙) < 11.4, to match the sample of massive galaxies used in this work. Bouwens et al. (2016) and McLure et al. (2018) combined literature results and are shown as shaded areas. Studies that include less-massive galaxies (shown with transparent symbols) have, on average, less attenuated UV emission, so the SFR_UV /SFR_tot ratio is higher. The red dots show the value of SFR_UV/SFR_MS we obtained for a disk galaxy inclined at 1 − cos(i) = 0.5 (i = 60 deg). More information about the studies included in this figure is provided in Appendix C. To convert the y-axis to A_FUV we multiply by −2.5. Two solid lines show evolution of SFR_UV/SFR_tot between (purple) and (lime green) normalised to −0.5 at z = 0. The evolution of FUV attenuation for massive galaxies evolves as up to z ~ 2.