>>509668662
Realistically? Around 40 years. Mostly because of their debt, which is enormous and with no real way to pay it all back.
Also, they have no more much credibility on an international level and there are ever less countries willing to borrow such debt.
The cards are falling and even americans have started to realize it.
Of course mine it's only an estimate, it could be way less or a little more if several factors and/or variables change