A good number of these are international students.
Also, only 55,000 of these degrees are Research Doctorates, according to NSF’s Survey of Earned Doctorates (https://ncses.nsf.gov/pubs/nsf22300/)
The rest include MDs, VD’s, DDs, EdD’s, PsychDs, and a dozen more. Even those 55,000 include other Doctorates than PhDs.