The food industry, which includes farming and food production, packaging and detrition, and retail and catering, is enormous. states that in the United States, consumers spend approximately US$1 trillion annually for food, or nearly of the Gross Domestic Product (GDP). Over 16. 5 million people are employed in the food industry. In 2004, processed food sales worldwide were approximately US$3. 2 trillion. According to Reuters, “food processing is one of the largest manufacturing sectors in the United States, accounting for approximately of all manufacturing shipments (by value).