The institution publishes its budget. 10 seconds of DDG search found this page: https://vpf.mit.edu/about-vpf/publications Looks like tuition is becoming less important over the Covid period and grad+ug is down to 9% of revenue.

They have a nice presentation with various charts and such which is where I get this info myself. I don’t know if it’s online. I forget how I got it when I was in school but now the people who come visit from the development office bring it with them because they know I’m interested.