The Center for Food Safety - Genetically Engineered Food: "Currently, up to 45 percent of U.S. corn is genetically engineered as is 85 percent of soybeans. It has been estimated that 70-75 percent of processed foods on supermarket shelves--from soda to soup, crackers to condiments--contain genetically engineered ingredients. "
You won't be able to tell from the labels though. The U.S. has no requirement that genetically modified food ingredients be listed on foods. It hasn't been safety tessted, either. If this pisses you off, too, please make your voice heard by filling out this short form to let the FDA know you want testing and labeling of GE food: http://ga3.org/campaign/labelandtestgefood