According to the Russian Ministry of Economic Development forecast in 2009 if oil prices remain at 50 U.S. dollars a barrel, the ruble against the U.S. dollar will 30.8-31.8 to 1.

• 据俄经济发展部的预测，2009年如果石油价格维持在每桶50美元，那么卢布对美元的汇率将为30．8-31．8比1。