Redshift evolution of the AGN space density in three luminosity for log N_H = 20 − 24 (upper panels) and log N_H = 20 − 26 (lower panels). The shaded regions represent the 68% and 99.7% confidence intervals of the best-fitting PDE model, while the points represent the binned luminosity function. For comparison, the results of Marchesi et al. (2016b), Vito et al. (2018), and Peca et al. (2023) are overplotted. The dotted red lines indicate the LDDE model predictions with an exponential decline (with a power-law decay) by Gilli et al. (2007). The brown dash-dotted lines show the predicted XLF derived by Ananna et al. (2019).