That's not what it says.

It says the records were destroyed; there were a lot of them

Furthermore that they kept the records for longer than they were legally required to which reads as an excuse for not having them

And also that they found some duplicates of the destroyed records, which reads like they chose which of the records they wanted to keep

There is a line at the end about how many records the department processes annually, but that figure is unrelated to this case and reads as an excuse for why they are unable to investigate themselves, but really, why would they?