None are specifically allocated for any particular program. Historically, MD has been the largest subset, but it is between 9% and 12% of KH scholars (so only 6-9).
The only numbers I have are that 3500 people applied first cycle, 4200 second cycle - that means now In their 4th cycle probably around 5000 are applying, maybe? And that still gets narrowed down to maybe 150 finalists for 75-90 seats.
So, like 600 MD/KH applicants maybe? Then 18 finalists, then 9 receive it. My best guess. That 600 actually sounds high.