  Recently, CHIME/FRB project published its first fast radio burst (FRB)
catalog (hereafter, Catalog 1), which totally contains 536 unique bursts. With
the help of the latest set of FRBs in this large-size catalog, we aim to
investigate the dispersion measure (DM) or redshift ($z$) distribution of the
FRB population, and solution of this problem could be used to clarify the
question of FRB origin. In this study, we adopted the M\&E 2018 model, to fit
the observed $z$ distribution of FRBs in Catalog 1. In the M\&E 2018 model, we
are mostly interested in the $\Phi(z)$ function, i.e., number of bursts per
proper time per comoving volume, which is represented by the star formation
rate (SFR) with a power-law index $n$. Our estimated value of $n$ is
$0.0_{-0.0}^{+0.6}$ ($0.0_{-0.0}^{+2.1}$) at the 68 (95) per cent confidence
level, implying that the FRB population evolves with redshift consistent with,
or faster than, the SFR. Specially, the consistency of the $n$ values estimated
by this study and the SFR provides a potential support for the hypothesis of
FRBs originating from young magnetars.
