The Yuan has lost 7% of it's value against the Dollar in the last 3 months. The fact is the Dollar is incredibly strong, it's up over 6% on a year ago. Yes trade in marginal currencies like the Yuan is up because Russia is desperate, they will trade in anything right now, but this is all small change. It's easy to double transactions when they start from such a pitifully small level to start with. Demand for dollars is as high today as ever.