Pension 0.5 0 0.0 2001 2003 2005 2007 2009 8% Return 6% Return 5% Return 4% Return Source: State Comprehensive Annual Financial Reports. Source: CBO, Center for Retirement Research. ' Example: here’s a link to a 2007 article by Austan Goolsbee, former Chairman of the Council of Economic advisors and a member of the Obama Cabine