Dallas—The exhibition industry grew by 4.8% last year over 2005, according to the CEIR (Center for Exhibition Industry Research) Index Report. The index is based on four metrics: revenue, attendees, net square feet and exhibitors. Last year revenue increased 9.7% over the previous year; attendees increased 4.6%; net square feet, 3.8%; and exhibitors, 1.3%. Industries leading last year’s growth were professional business services (up 11.1%), raw materials and science (up 10%), transportation (up 9.4%), building and construction (up 9.2%) and food (up 7.4%). Nearly 300 events contributed data for the report.