Redshift evolution of the Schechter function fitting parameters for the flux density function shown in Fig. 8. The solid blue and dotted orange curves with circles respectively represent the fitting parameters for the L21 and H13 models. To exhibit the evolution of the flux density functions, we also show the fitting parameters for an arbitrarily fixed value of S^* = 1.5 mJy using solid blue and dotted orange curves with boxes for the L21 and H13, respectively. The shaded regions around the curves represent fitting uncertainties.