Doesn’t say the age group. How many are older folks with old PHDs or Masters that are irrelevant or insufficient for todays world.
Well, unless they're counting Medicare and Social Security in the calculations, not that many. And, there old PhDs would be underrepresented were it not for the requirement to take the benefits when one hits a certain age: academicians with tenure tend to retire very late: I know lots of mathematicians (my own field) who are working well into their eighties.
Older PhDs were in actual academic disciplines that don't become irrelevant, and either have tenure or long ago left academe for commerce or industry, where what they learned is still useful. Too many of the new ones are in [Affirmative-action-beneficiary-class-here] Studies or areas that have been corrupted (most [Language-name-here] Literature programs are now Continental-Philosophy-for-Dummies programs having been taken over by deconstructionists).