I don't know if this has been posted already, and I don't know how many members know that this site exists, but I'll put it out there anyway. https://www.usmint.gov/cumulative-sales-figures
coinnews.net actually posts a weekly update with all the net changes in a table format that is a lot easier to read. http://www.coinnews.net/2017/08/03/us-mint-sales-2017-s-enhanced-uncirculated-set-returns/