A new U.S. Department of Agriculture (USDA) report shows that organic food sales have seen a sharp increase, topping $5.5 billion. AgWeb reports that sales are up 72 percent since 2008. The growth comes primarily from several pockets in the U.S., including the West Coast, Texas and Colorado, the upper central Midwest and parts of the Northeast. The following 10 states account for 78% of all organic sales in the U.S. California, Washington, Pennsylvania, Oregon,…