Not sure where this “float” thing is coming from. All currencies go up and down based on people buying and selling them. I believe there’s over 5 Trillion, (that’s a T) bet on the FOREX market every DAY. And all currencies are basically pegged to the dollar whether they like it or not. As the Iraqi Dinar rises in value after going International on FOREX, the money currency players on FOREX make on a rising Dinar comes from other traders, not Iraq.