Different from a school to a school. There are some schools that go through their waitlist very fast and there are some schools that don't even have a waitlist right now and it will be created after all the interviews and the movement on the waitlist could be very slow. It could be different from a year to a year, so it really depends. But 90 additional applicants on the waitlist for a school with 90 seats seems to be too much. If you want to know what's going on with your school this year, find a thread for your school's waitlist. That is probably the best place to find out.