Evolution by type of AGN. The top two panels show the differences in the luminosity functions by type (and also the “Maximal” luminosity function) for two of the best-sampled redshift bins in the survey. The lower two panels show the number densities of highly luminous quasars (﹩\nu {{L}_{5\,\mu {\rm m}}}\gt {{10}^{45}}﹩ and ﹩{{10}^{46}}\;{\rm erg}\;{{{\rm s}}^{-1}}﹩, corresponding to a bolometric luminosity ﹩\;\approx {{10}^{12.2}}﹩ and ﹩{{10}^{13.2}}\;{{L}_{\odot }}﹩, respectively) as a function of redshift. The colored dotted lines show the integrated luminosity functions by type, and the black dotted–dashed lines that for the total AGN population. In the lower right plot, only the sum of all obscured AGNs, the type 1 AGNs, and the total of both populations are shown as magenta, blue, and black lines, respectively.