If you look at the 2020 profile it provides there were 1355 offers of appointment last year. There were 6772 nominations total. Also this number gets slight skewed as Presidential will have 700-800 candidates qualify for it, but only 100 can be charged there. JRTOC/ROTC can be unlimited in the noms but only 20 appointments. Also not all those who get a Nom are 3Q. Now there are plenty of double or even triple noms in that 6772. USNA does not release in their class profile how many are 3Q. I believe USNABGO08 did a break down a few years ago that gave the full stats. USMA does release this number and it is usually around 2300-2500 depending on the year.
On an old thread someone posted for Class 2012 (I didn't verify these or the source, but seems about right):
USNA Class of 2012
2,196 Triple qualified w/ nomination (1,642 unqualified nominees)
1,537 Appointments awarded
1,261 Sworn in
Sorry I can't give you exact numbers, but this should put you in the ball park. Hopefully one of the BGOs who has access to stats from admissions can post them. Good luck.