“The Employee Benefit Research Institute and the Investment Company Institute have been collaborating since 1996 to develop the most comprehensive database on 401(k) plan participants yet assembled. Participant data include demographic, contribution, asset allocation, and loan and withdrawal activity information. The December 2008 EBRI Issue Brief presents analysis of data collected for 2007 on more than 56,000 plans with 21.8 million participants and $1.425 trillion in assets.”