The domestic car industry is represented by DINA S.A., which has built buses and trucks since 1962, and the new Mastretta company that builds the high-performance Mastretta MXT sports car. In 2006, trade with the United States and Canada accounted for almost 50% of Mexico's exports and 45% of its imports. During the first three quarters of 2010, the United States had a $46.0 billion trade deficit with Mexico. In August 2010 Mexico surpassed France to become the 9th largest holder of US debt. The commercial and financial dependence on the US is a cause for concern.