[DManA]

Source for what? How pension systems work? What assumptions apply? Look it up.

[muawiyah]

No, not how pension plans, per se work, but how the United States Government's pension plan works ~ that's the one we are talking about.

The Office of Personnel Management plays the part of "the Administrator" ~ but they do not have the investment latitude of the private sector, or the state and local governments.

We need to know where, exactly, you got your numbers for the investment plan we are talking about.