Earlier quoted context omitted.
> I had assumed I was the only one. That's strange then because there are plenty of people here that have stated openly and without reservation that they are gay or transgender. In a population of this size you should be very surprised if you are the only gay person.
While it would be very surprising to actually be the only one, it's not surprising to feel as the only one. It's quite reasonable to believe that a randomly chosen person is not gay, so you can't just pick someone and think, he is too, fine, I'm not alone. Statistics are not enough, real concrete persons count.
Quite a few of them are 'out' in public, google can help you out there.