Evolution of the mid-infrared luminosity function for spectroscopically confirmed, mid-infrared selected AGNs. (a) The best-fit broken power-law model with luminosity evolution (Equation (1)). The points show the binned luminosity function and the lines the model. (b) Same as panel (a) but for the fixed faint-end slope model (solid) and the pure power-law model (dotted–dashed). (c) The dashed-dotted lines show the “Maximal” luminosity function, including objects without AGN spectroscopic confirmation, compared to the luminosity evolution model (solid lines).