It's a book. I did some looking and couldn't find exact numbers, apparently they don't report trannies per capita

. But I found an article that goes through what is known, someone might be able to find a better article.
The number of transgenders in the United States is a tiny, but growing, percentage of the American population. Other important statistics include...
www.hli.org
Thank you, this is exactly the kind of stuff I'm looking for.
There were two particular points you highlighted I wanna expand on:
American Society for Plastic Surgeons. It states that sex-reassignment surgery was the highest growing surgery in 2016-2017. During this time, these surgeries grew by 155%. The increase for transgender men was 289%. The increase for transgender women was much lower, at 41%.
This, to me, is always one of the most insidious ways people manipulate statistics (not accusing you, but the authors): Nowhere in this statement is an actual figure given. If there were 4 surgeries in 2016 but 10 in 2017, there's your 155% increase.
Not saying this is absolutely what's happening here, but any time someone quotes percentages without giving any actual numbers I immediately assume the actual difference is negligible (you see this kind of bullshit pulled alot with gun crime statistics).
Researchers believe there may be about
30,000 transgender people in the European Union. However, they based these estimates on numbers taken from health professionals. These numbers only included people who either had sex reassignment surgeries or who were undergoing hormone treatment.
So, while I appreciate this is by no means definitive, we at least have a confirmed minimum number of 30,000 people who have had SRS or are popping titty skittles,
in the entire European Union. Going by the percentages of trans presentation you also cited (assuming the 30k receiving treatment and/or surgery can be split as cleanly as merely identifying as trans) let's say 10,000 of those are people under the age of majority.
That means, of the estimated 142,000,000 people under the age of 18 in the EU,
0.007% of them are actually going through with the serious, irreparable trans stuff.
Maths aren't my strong suit, so if I've fucked up my figures feel free to correct me, but this pretty clearly establishes my point as far as I'm concerned: What's happening is bad, but it is by no means an epidemic.