Evolution of the comoving dust mass density (ρ_dust) as a function of the look-back time. Our determinations are shown at t_lookback ∼ 12.3 Gyr, obtained from the ALMA continuum detection of the UV-selected (blue circle) and serendipitously detected sources (red circle), respectively. The blue and red boxes represent the 1σ uncertainties. For comparison, estimates from other surveys are shown (ALMA: Magnelli et al. 2020; Herschel: Dunne et al. 2011; Driver et al. 2018; Beeston et al. 2018; Pozzi et al. 2020; SCUBA: Dunne et al. 2003; Vlahakis et al. 2005; Dudzevičiūte et al. 2021; IRAM: Magnelli et al. 2019; absorbers in the optical spectra of quasars: Ménard & Fukugita 2012; Péroux & Howk 2020). The lines represent different models: the cosmological hydrodynamic models from Aoyama et al. (2018) and Li et al. (2019) (light green and cyan, respectively); the semi-analytical models from Popping et al. (2017) and Vijayan et al. (2019) (magenta dashed and pink solid lines, respectively); the chemical evolution model from Gioannini et al. (2017) (dark green dashed line).