It ignores it, but not in favor of the bottom 90%, it looks like the numbers for % of pension entitlements have dropped significantly for the bottom 90% and went up only for the top decile.

50-90% https://fred.stlouisfed.org/series/WFRBSN40178

1-50% https://fred.stlouisfed.org/series/WFRBSB50205

90-99% https://fred.stlouisfed.org/series/WFRBSN09151