Normalized distribution of bolometric (radiative) AGN luminosity (L_rad,AGN), as a function of redshift, for various populations, as indicated in the panels and legend, respectively. HLAGN refers to X-ray-, MIR-, and SED-selected AGN, while MLAGN refers to radio AGN hosted by red, quiescent galaxies or showing a >3σ radio excess in log (L_{1.4 GHz}/SFR_IR), but not selected as X-ray, MIR, or SED AGN (see text for details). Left-pointing arrows indicate upper limits in L_rad,AGN (see text for details). The upper x-axes show the supermassive black hole (SMBH) accretion rate that is estimated from L_rad,AGN assuming a standard radiative efficiency of 10%.