As I said, until I see the actual report, I will not believe the percentage would somehow leap from 1.5% to 10% in one year. That’s just common sense. The fact is most people haven’t made their deposits; that’s like him saying the yield at UChicago is 90% on that date! Why would any reasonable person believe that?
This link http://bulletin.printer.yale.edu/pdffiles/law.pdf says Harvard and Yale each provide just about ten percent, not significantly more.
Edit: sorry, looks like I am one step slower than Alexandre.