I know that is supply and demand, but when there is a big player like the government, they can put the price down by ofering more the question here is if they are willing to do it in the long term with the leak of dollars this produce or if they are just wanting to let it grow but without peacks so it dosn't catch so much attention, anyway at 8,5 on the moment there is a relative small demand and offer as well, by just putt some fresh dollars on the market it can retain it on that value without so much of a hassle, of course not forever and i don't thing is their intention neither, at 6 there will be a huge demand but at 8,5 not, as people will use the credit card when they can in this moment, now a day people buy the minimum possible at blue and the rest they pay with the credit card at least the majority, but as the demand is very small and limited the price of the blue continue going up, the average person here is not willing or able to pay 8,5 per dollar, they use the CC as much as possible before getting dollars at that rate of course with the time they will get use to that price specially when the government put more and more taxes to the credit cards and barriers to get dollars but by that time the blue will be much higher for sure.