Well it's a rather difficult calculation to make in this fashion. The relevant data needed is total number of retirement hours funded, total productive output,

Well it's a rather difficult calculation to make in this fashion. The relevant data needed is total number of retirement hours funded, total productive output, and total "other" essential spending. What's also happening is the cost of healthcare is increasing, quite dramatically, and eating up productivity gains. I have a strong suspicion that we're way ahead of "general essential" social spending today, compared to 1950s, per-captia; productivity gains included. Open to detailed analysis on this though