Despite challenges, middle market firms continue to hire new workers and perform during a crucial moment for U.S. economic growth. Employment and revenue growth continue to outpace average national growth. With average revenue growth over the past 12 months of 5.8%, the middle market continues to show robust growth. In an economy that overall experienced a mere 0.4% GDP growth in the fourth quarter of 2012, the growth of the middle market is nothing short of remarkable.