Number count distribution of the Compton-thick AGNs derived from the Neil Gehrels Swift-BAT survey in Akylas et al. (2016, black solid line). The red dashed line denotes the prediction of the X-ray population synthesis model of Akylas et al. (2012). Using the spectral parameters found in our spectral fits, we find that the Compton-thick AGNs fraction should be 20% of the type-2 AGNs population to agree with the observed logN − logS.