We only track the number of complaints we receive. The TBS is the administrator of the act, per se, so it receives the annual report from each institution, so it knows which institutions is getting what number of requests.
Based on my statistics, I can tell you that Immigration Canada is at the top of the number of complaints we receive, but it also receives over 120,000 requests a year. We have about 4,000 cases right now with respect to IRCC. The CBSA is the second institution we receive the most complaints about. The RCMP is third. CRA is fourth. PCO is fifth.
We keep track of the institutions with respect to the number of complaints we get, but not the number of requests they receive.