Keep in mind there isn't a single commencement ceremony for undergrads, so attendance can be a little deceiving. Because of the large number of undergrads graduating, there's a graduation ceremony in the morning for approximately half the students (by way of college or dept. they are in) and another graduation ceremony in the afternoon for the remaining half. My daughter graduated in 2014 and I was shocked at how many people were there, and that was for only half of of the total number of graduates. It really was quite impressive and the Convo was beautiful.