Our numbers will grow, and here's why. I actually think there are two sides to the transgender female spectrum. A.) Girls who have genuinely felt trapped in a male body since childhood and absolutely had to transition to alleviate mental anguish. And B.) People who see gender as a *very* fluid state of human expression. I personally fall into the second category. Presenting as male didn't completely bother me, and I would have probably lived fine as male. However being female peaked my curiosity and also spoke to me in ways being male didn't (not to mention I was always feminine pre-transition), so I transitioned not for "the fun of it," but because to me gender is a free way to express yourself.
It is damaging to place a narrative on what it truly means to be a trans woman, so you have to include all people in the spectrum.
Basically I believe our numbers have increased and will continue to increase, because there are more and more people who are freely switching genders because they *want* to, because gender is just a form of expression for them and not conclusive of or tied to their sex. As the stigma towards gender fluidity eradicates, more and more people will feel comfortable experimenting and freely navigating through the gender spectrum. In the end we will eventually reach a society where gender has become as fluid as sexuality has now become. So in that sense our numbers will grow.
I hope I made sense and that I didn't say anything offensive.