The Commissioner can ask a lead agency to write a report, like the one mentioned in section 154(1)(b), and say how often they want it done. You might have to do it every year, or the Commissioner might say you can do it less often. The Commissioner decides how often you have to write the report by thinking about a few things. They consider how much it costs to write the report, how much the public cares about what is in it, and how important the privacy issues are. When the Commissioner is deciding, they look at things like the costs of reporting, the public interest, and the privacy implications, as mentioned in section 154(1)(b), to figure out how often the report should be written.