NAPL Reports Strong Printing Business Index The Printing Business Index (PBI) of the National Association for Printing Leadership (NAPL), the association’s broadest measure of print activity, rose fractionally in June 2005 to 55.9 from 55.4 in May. Although both readings are down from the 2005 peak of 61.1 reached in March and April’s robust 58.9, the latest reading marks the 24th consecutive month that the PBI has been above the critical 50.0 mark – the point at which more printers rep...