beware of rough calculation ahead :rofl: :
17 years, give or take 9 locations. Some had average group sizes of 300, some were more like 150 to 200, then some were even smaller. So, average for the whole 9 would conceivably run around 180 or, so that's about 9x180=1620x17=27,540.
27,540 could be a reasonable guesstimate. Keep in mind that Sembler claims only 12,000 successful graduates and current programs base their success rates on 51% of the successful graduates responding to surveys, etc. Rumor has it that KHK has 10 or fewer clients these days.