not definitive at all, but... from a 2015 G&M article that (unfortunately doesn't provide source reference): "Together, trans and intersex persons account for 775,000 Canadians (0.5 per cent are trans, 2 per cent are intersex)"... the number correlates to a population of 31 million for Canada, aligning with 2006 population data: => which would equate to 155,000 Canadians @0.5% trans
to the earlier questioning of whether a number means anything - I would say it does based on comments I read/hear in regards "bathroom usage/assignments", particularly localized to high-schools... something of the like, "just how many trans kids can there be in that school, anyway!"
of course, broad terms fail to address the 'nuances' within identity/identify. As I read, it's yet unclear the target categorization(s) for the intended Trudeau government legislation... broad reference is given to just the term, 'transgender', in what I've read so far. I would expect/anticipate a more granular makeup in target protections; one to extend across transgender, transsexual, intersex and gender variant groupings.
.