China's current account surplus has declined to 2.8% of GDP for 2011 from about 10% in 2007, and will be around 2.3% of GDP in 2012, according to IMF estimates. The U.S. current account deficit is down to 3.1% of GDP from 5.1%. By controlling the exchange rate China was able to keep the competitiveness of its exports, resulting in a five fold increase in exports from 2000 to 2010, according to the IMF. The decline could be temporary say experts, as the the recession in Europe and the U.S. resulted in slowing exports, with its infrastructure buildup sucking in imports of machinery and other goods from the western countries at an accelerated pace with its 2009 stimulus measures. Another reason is that in the last decade China has developed its own high tech and other companies which will now increase exports. IMF forecasts show a pickup in China's trade surplus to 4.25% by 2017. This could be lower if the renminbi is allowed to appreciate. Estimates of appreciation of the renminbi are 8 percent in nominal terms since June 2010 against the dollar. Including inflation, which is higher in China, the renminbi has appreciated by 13% since June 2010. ...