Nearly half of the U.S. population snacks at least twice a day, researchers said. Recent snacking reports from market research firms Technomic, Packaged Facts and SymphonyIRI found: -- Seven in 10 snacks were eaten in the home, but workplace snacking is on the rise. -- Retail sales of packaged snacks are estimated to reach $76.8 billion by 2015. -- When it comes to snack time, three of four consumers tend to snack in the mid-afternoon and four in 10 people snack mid-mornings, mid-evening, and late at night. -- Half of consumers want snacks that offer an energy boost. -- Snacks such as trail mix and hummus were the highest-grossing snacks in 2011, up 11.1 percent and 10.5 percent respectively. -- Three in 10 snacks consumed last year were beverages. -- Vegetarian items, ethnic street-food-inspired appetizers, charcuterie and bite-sized hors d\'oeuvres are the top trendy appetizers for 2012. -- Two-thirds of women say it\'s important that snack portions not be too large. -- Parents are looking for snacks with added nutrients for their children. -- 60 percent of consumers said the most desired healthy snack attributes are no trans-fat and \"beyond basic nutrition,\" e.g., antioxidants. The findings were published in Food Technology magazine.