This document is about a report from the U.S. Department of Labor's Employee Benefits Security Administration that provides an abstract of the 2007 Form 5500 Annual Reports for private pension plans in the United States. It includes detailed statistics and data on the number of plans, participants, assets, contributions, and benefits for various types of pension plans, such as defined benefit, defined contribution, 401(k), and employee stock ownership plans (ESOPs). The report highlights key trends and changes in the private pension system from 2006 to 2007.