In 2007, the United States produced 6.5 billion gallons of ethanol using 18 percent of its corn crop
In 2007, the United States produced 6.5 billion gallons of ethanol using 18 percent of its corn crop. The size of the crop set a record, and exports of U.S. corn didn't decline. U.S. ethanol also produces animal feed as a byproduct.
Source: Corn ethanol's downsides: High food prices, more pollution By Renee Schoof | McClatchy Newspapers, April 16, 2008, http://www.mcclatchydc.com/226/story/33945.html