In recent years, the United States and other countries have expressed considerable concern that China’s national currency (the yuan or renminbi) is seriously undervalued. Some analysts say the yuan needs to rise by as much as 40% in order to reflect its equilibrium value. Critics say that China’s undervalued currency provides it with an unfair trade advantage that has seriously injured the manufacturing sector in the United States. Chinese officials counter that they have not pegged the yuan to the dollar in order to gain trade advantages. Rather, they say the fixed rate promotes economic stability that is vital for the functioning of its domestic economy.