Ultimately, there's no money in a bank account; this is essentially an accounting entry.
We know that only employees and employers have been contributing to this since 1990. We can say there was more or less a balance from 1972 to 1995. In the 1990s, there was already a $2.2 billion surplus; in 1993, it was -$5 billion. From 1995 until the end of 2008, there was cumulative surplus of $57.17 billion. Is that correct?