I think it's 37.
The way the GPA is structured, it's a positive list of entities, and even if the states had taken commitments, there are exceptions and exclusions to that. So maybe the progress that could be made on the list of entities covered is there's a way to shorten the list of exceptions.
It's also true for the provinces: the number of entities covered is also limited. So there's room for negotiations, depending on the interest on both sides of the border.