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 New Constitution
Thus in 684 they had reverted in the main to the arrangements that subsisted before the Sullan restoration.
Again the multitude of the capital was fed from the state-chest, in other words by the provinces;(6) again the tribunician authority gave to every demagogue a legal license to overturn the arrangements of the state; again the moneyed nobility, as farmers of the revenue and possessed of the judicial control over the governors, raised their heads alongside of the government as powerfully as ever; again the senate trembled before the verdict of jurymen of the equestrian order and before the censorial censure.
6. Cf. V. I. Insurrection of Lepidus
The system of Sulla, which had based the monopoly of power by the nobility on the political annihilation of the mercantile aristocracy and of demagogism, was thus completely overthrown. Leaving out of view some subordinate enactments, the abolition of which was not overtaken till afterwards, such as the restoration of the right of self-completion to the priestly colleges,(7) nothing of the general ordinances of Sulla survived except, on the one hand, the concessions which he himself found it necessary to make to the opposition, such as the recognition of the Roman franchise of all the Italians, and, on the other hand, enactments without any marked partisan tendency, and with which therefore even judicious democrats found no fault--such as, among others, the restriction of the freedmen, the regulation of the functional spheres of the magistrates, and the material alterations in criminal law.
7. Cf. IV. X. Co-optation Restored in the Priestly Colleges
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Reference address : https://www.ellopos.net/elpenor/rome/5-03-fall-oligarchy-pompeius.asp?pg=15