This is the complaint filed against Rainere. Notice the designation in the upper right corner? "TO BE FILED UNDER SEAL" Court file number indicates the case was opened in 2017.
http:// www.documentcloud.org/documents/4421505-Complaint-and-affidavit-in-support-of-arrest.html#document/p22
This is 1/18000 sealed filings. There are not 18000 sealed indictments. 18000 includes other documents filed under seal. This is still a huge gigantic number.