I come back to a comment I made earlier. The production of data on the part of the public service of Canada, I would say, is not a great strength writ large.
One thing you could do is ask for yearly reports on a more systematic basis. Come back with information year over year.
How is the whole procurement program moved? What are the top 10, 20 or 30 files? Could the department identify for you what the top 10, 20 or 30 files are?