Be careful here. This link shows two items issued by Citi:
• The Citigroup Pension Discount Liability Index is a weighted average developed by Citigroup, using its own “Citigroup Pension Discount Curve”. The single value shown at 12/31/08 is 5.87%.
• Citigroup develops this single value based on cash flow matching of a “typical” pension plan. Unfortunately, we do not have the details about what they consider to be a “typical” plan (or ir we do, I can't find it).
Before using this single value, it is prudent to consider the cash flow matching and demographics of the plan.