If it's a trivial amount, why should we even measure it? It may cost more to measure it. It may cause more unseemliness in the whole process than simply saying, “Here, provincial governments, is a transfer of $36 billion.” Notionally, $135 million of that is going to be associated with paying for the health care costs of about 5,000 immigrants over a five-year period, among almost 1.5 million immigrants, who are also going to be users of the health care system but paying taxes, but it all comes out in the wash.
Part of my problem with this whole exercise is that by forcing the government to quantify someone's medical costs to society, it is inherently dehumanizing. You're suggesting that we do it, but it is already fully funded.