Ad pages for business-to-business magazines fell more than 29 percent during the first quarter, according to figures [1] released today by American Business Media’s Business Information Network.

Revenues for trade shows—once heralded as a solvent during lean print times—fell 20.1 percent, according to ABM.

All 22 advertising categories tracked by BIN showed [2] double-digit declines.

“We are not surprised by these numbers given the current state of the economy,” ABM president and CEO Gordon Hughes said in a release. “However, our digital offerings continue to generate new revenues, and our custom media and data businesses also continue to show strength.”

Consumer magazines, of course, are hurting, too. Ad pages in consumer titles plunged 25.9 percent during the first quarter [2], according to the Publishers Information Bureau.