They are a sovereign nation would be the easiest answer. The most likely reason is they have no clue how many they wrote. Or another reason might be that they sure don't want the general public to see how few tickets were written, bad for PR. In any case, they could careless if you want the information. Besides, you should trust them, they are the guardians of the salmon, and it has ritual significance. Atleast that is what we are told. Well pardon me as I trip over the gutted and discarded "ritual salmon". My final answer is; you'll get the information when pigs fly.