There are hundreds of thousands of movements. If you talk about all modes of transport, it's millions, in terms of air, rail, and marine. We only investigate in a very small number of cases. We get roughly 3,500 occurrence reports per year. We do about 60 full investigations with a public report, although all the other occurrences are also documented. The operators are ultimately responsible for the safety of their operations, and of course, the regulator is there to make sure that happens.
In all those cases where we don't have reason to investigate, they really would benefit more than we would by having that data, in order to identify deficiencies in training, unclear procedures, and the need for greater supervision.