How many sexual assaults by people who claimed to be trans sexual, or even just pretended to be transsexual whether they were actually transsexual or not? That is just not a common event.
That's because you're only starting to force transsexuals into girls rooms. BTW, over three times the men are "born women" as opposed to the reverse.
Seriously, you sit down and think about it, and it doesn't scare you? You're fighting to give sexual predators free access to girls bathrooms?
What's the standard for you though? How many little girls need to be sexually assaulted for it to start to be maybe not worth making transgenders feel comfortable in the bathroom they are going to?
How many of the 5,500 transgenders do you think would even want to use the opposite bathroom and announce their sexual deviancy? Note here I'm not using deviancy, it just means deviating from the norm. Obviously 5,500 people are not the norm in a country of 350 million