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
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
The institution of a standing commission regarding the exactions of magistrates in the provinces, occasioned by the frequency of complaints as to such cases, in 605,(15) and the laws as to extortion following each other so rapidly and constantly augmenting its penalties, show the daily increasing height of the evil, as the Nilometer shows the rise of the flood.
15. Cf. IV. II. Vote by Ballot
Under all these circumstances even a taxation moderate in theory might become extremely oppressive in its actual operation; and that it was so is beyond doubt, although the financial oppression, which the Italian merchants and bankers exercised over the provinces, was probably felt as a far heavier burden than the taxation with all the abuses that attached to it.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/4-11-commonwealth-economy.asp?pg=17