The Chinese central bank's decision to increase their bank reserve requirement ratio (RRR) by 0.50% to 19.5% has led China to try again to combat inflation. However, commodity markets are only responding modestly to the unexpected move and selling off some of their shares in response. According to DOW Jones, IEA head Nobuo Tanaka predicted that the global economy would be negatively impacted by sustained oil prices of $100 per barrel.