The numbers don't change much at all for 80+. Not to mention lots of people won't live until 80 much less 60. And adding social security would increase the %

The numbers don't change much at all for 80+. Not to mention lots of people won't live until 80 much less 60. And adding social security would increase the % of people who had 500k but would also increase the net present value of individuals @ the top 20%.