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
Changes of in the Arrangement of Magistracies and the Jury-System
Thus in legal possession of full power, Pompeius set to work and proceeded with energy against the republican party which was powerful in the clubs and the jury-courts. The existing enactments as to elections were repeated and enforced by a special law; and by another against electioneering intrigues, which obtained retrospective force for all offences of this sort committed since 684, the penalties hitherto imposed were augmented.
Still more important was the enactment, that the governorships, which were by far the more important and especially by far the more lucrative half of official life, should be conferred on the consuls and praetors not immediately on their retirement from the consulate or praetorship, but only after the expiry of other five years; an arrangement which of course could only come into effect after four years, and therefore made the filling up of the governorships for the next few years substantially dependent on decrees of senate which were to be issued for the regulation of this interval, and thus practically on the person or section ruling the senate at the moment.
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Reference address : https://www.ellopos.net/elpenor/rome/5-08-pompeius-caesar.asp?pg=53