Point-of-purchase advertising grew almost 8% last year to $12.02 billion, according to the Point-of-Purchase Advertising Institute, Englewood, N.J. POPAI said its Market Size & Structure Study, conducted in conjunction with Meyers Research Center, New York, is the most comprehensive study on the size and structure of the industry. More than 13,000 companies were interviewed. It said the restaurant/food service/tavern industry spent the most for p.o.p. last year--$998 million. That was followed by apparel/footwear at $944 million and automotive at $855 million.