Dallas—The trade show industry continued to bounce back from the recession, according to data released by the Center for Exhibition Industry Research. The CEIR Index increased 4.1% last year compared with 2009.

The CEIR Index measures trade show industry performance using four metrics: net square feet, revenue, professional attendance and exhibiting companies. In the fourth quarter, all four metrics increased compared with the same quarter in 2009: net square feet increased 5.6%; revenue, 4.2%; professional attendance, 5.4%; and exhibiting companie, 2.1%.