Apple has withdrawn some of the funds from the disputed tax payment it had lodged in an escrow account.
The money was placed in an account after the EU ordered that the company pay the money to Ireland.
The decision is currently subject to an ongoing legal challenge.
Apple lodged €14.285bn between May and September 2018.
By the end of last year it had fallen in value to €14.02bn.
Some €209m of the drop related to a "third country adjustment," the Comproller and Auditor General Seamus McCarthy told the Public Accounts Committee.
This was a payment to another country made by Apple related to the State Aid investigation carried out by the EU.
The remainder of the drop in value was due to investment losses and administrative expenses.
Ireland had also incurred legal fees and costs from managing the funds.