Traduction de «cost its promised future benefits totals $600 billion » (Anglais → Français) :

However, the cost of its promised future benefits totals $600 billion.
Toutefois, les prestations futures promises totalisent 600 milliards de dollars.

In 1997, there was only $40 billion in the fund, whereas the cost of future benefits to be paid out was $600 billion.
En 1997, le fonds ne s'élevait qu'à 40 milliards de dollars, tandis que le coût des prestations futures à payer atteignait 600 milliards de dollars.