Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
The appointment to those offices remained
with the community, and was subject to no restriction as respected
the consuls and perhaps also the tribunes of the people
and plebeian aediles; we have already adverted to the fact,
that the Imperator reserved a right of proposal binding on the electors
as regards the half of the praetors, curule aediles, and quaestors
to be annually nominated. In general the ancient and hallowed
palladia of popular freedom were not touched; which, of course,
did not prevent the individual refractory tribune of the people
from being seriously interfered with and, in fact, deposed and erased
from the roll of senators.
As the Imperator was thus, for the more general and more important
questions, his own minister; as he controlled the finances
by his servants, and the army by his adjutants; and as the old republican
state-magistracies were again converted into municipal magistracies
of the city of Rome; the autocracy was sufficiently established.