NAPL Printing Business Index Rises for March The National Association for Printing Leadership’s (NAPL) Printing Business Index (PBI), the graphic communications industry trade association’s broadest measure of print activity, rose to 59.1 in March 2006 from 56.5 in February and 55.9 in January. A reading above 50.0 means more printers report activity is picking up than report activity is slowing down. Gains in pricing, work-on-hand, hiring and hiring plans account for the increase. C...