Adding to the debate about whether smaller or larger businesses play an outsized role in the nation’s economy, a new Census Bureau report finds that the concentration of both older and larger firms has continued to increase in the U.S. economy over the last several decades, giving these firms an overall greater impact on employment and job growth than younger and smaller firms. Specifically, the report indicates that decreases in the national share of startup firms over the last several decades lead to an increased concentration of older firms, which in turn has had a greater impact on national employment and job creation than an increase in larger firms over the same period.