NAPL Survey Shows Printers’ Business on Rise The Printing Business Index (PBI) of the National Association for Printing Leadership (NAPL), the association’s broadest measure of print activity, rose fractionally in December 2004 to 59.7 from 59.6 a month earlier. While below the 62.7 PBI record high reached in October 2004, it is still a strong reading, and marks the 18th consecutive month that the index has been above the critical 50.0 mark, the point at which more printers report act...