Social Security Death Index Updated for December 1999. The SSDI now consists of 62,713,038 names reflecting 29,230 changes, 1,355 deletes, and 156,129 adds for the month of December 1999. Search the SSDI at: http://ssdi.genealogy.rootsweb.com/cgi-bin/ssdi.cgi While you are doing your new search, don't forget that you can attach a correction, addition, forwarding address, or link to any entry in this database using RootsWeb's Post-em note capability.