It depends.
A one-year decrease of a couple of hundred files is not necessarily going to change things. If we noticed that there is a downward trend, we'd do some analysis as to why. Based on that analysis, we would do an adjustment.
In our organization, we try to balance the workload dealing with the Privacy Act and that dealing with the Access to Information Act. It's often the same training that's required, but with a little different expertise. We have some flexibility to adjust between them, unless they are both growing dramatically in a given year.