I think the sealed indictments are for a variety of crimes, not all connected to the same thing. I also don’t think the process is proceeding at the same rate in all states. Oregon for example, you could probably indict at least 173 at the universities alone... or at least a platypus (cross a beaver and a duck)
Only 1,000 to 2,000 nationwide per year is normal. 88,350 sealed indictiment cases 10/30/2017 to 3/31/2019
https://freerepublic.com/focus/chat/3740162/posts?page=1630#1630