I think that probably although the society know the number of supposed annointed ones by who partakes of the emblams each year, they possably do not have the names and addresses of those ones. That is why they can say they do not keep tabs on WHO the annointed ones are.
I know this information is on the record cards, but probably they do not extract that info from the congs.
So they know the number of partakers but do not know or care who they are. After all they only wanted that figure each year to show the sheep that the anointed ones were gradually dying off. Of course that no longer helps them, now that the figure goes up each year, so I fully expect them to stop publishing it this year or next.
I may well be wrong though with these thoughts, and would welcome other peoples view on this.