According to the essay written by Erik Camayd-Freixas, Ph.D., "People often wonder where those funds go, but have no idea how much they amount to. Well, they go into the SSA’s “Earnings Suspense File,” which tracks payroll tax deductions from payers with mismatched SSNs. By October 2006, the Earnings Suspense File had accumulated $586 billion, up from just $8 billion in 1991. The money itself, which currently surpasses $600 billion, is credited to, and comingled with, the general SSA Trust Fund. SSA actuaries now calculate that illegal workers are currently subsidizing the retirement of legal residents at a rate of $8.9 billion per year, for which the illegal (no-match) workers will never receive benefits.