The applicant numbers @Cavitee linked to correspond with the numbers on this site for prior years. (Association of American Medical Colleges):
https://www.aamc.org/data/facts/applicantmatriculant/86042/factstablea2.html
It does not provide acceptances. I don’t know of a composite view for acceptances across institutions.
The other link provided earlier is from student survey data and obviously surveys are not 100% complete or accurate. I believe the AAMC data is directly from the medical schools.