They did that until they ran out of zeros. That's when they had to switch from their own currency to the U.S. Dollar.
The article speaks as though the citizenry there walk around with the same greenbacks we have.
They print this monopoly money thing based on their closet full of US cash.
So basically, they write money based on our performance in the IMF basket - How good our money is sees how good their money is.
The nicest thing is that technically a movie should cost a nickel.