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 military budget also had risen, since the garrisons of Cilicia, Syria, and Gaul had been added to those of Spain, Macedonia, and the other provinces. Among the extraordinary items of expenditure must be named in the first place the great cost of fitting out fleets, on which, for example, five years after the great razzia of 687, 34,000,000 sesterces (340,000 pounds) were expended at once. Add to this the very considerable sums which were consumed in wars and warlike preparations; such as 18,000,000 sesterces (180,000 pounds) paid at once to Piso merely for the outfit of the Macedonian army, 24,000,000 sesterces (240,000 pounds) even annually to Pompeius for the maintenance and pay of the Spanish army, and similar sums to Caesar for the Gallic legions.
But considerable as were these demands made on the Roman exchequer, it would still have beenable probably to meet them, had not its administration once so exemplary been affected by the universal laxity and dishonesty of this age; the payments of the treasury were often suspended merely because of the neglect to call up its outstanding claims. The magistrates placed over it, two of the quaestors--young men annually changed--contented themselves at the best with inaction; among the official staff of clerks and others, formerly so justly held in high esteem for its integrity, the worst abuses now prevailed, more especially since such posts had come to be bought and sold.
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Reference address : https://www.ellopos.net/elpenor/rome/5-11-old-republic-new-monarchy.asp?pg=76