Here is an archive.ph link to the Them.us article about it:
Here is the link to the actual journal article it cites:
Haven't actually read it yet to formulate my own thoughts but i just wanted to share it because several of my friends on instagram are reposting it with the caption "trans is normal".
Edit: okay now that I've looked at it, it only looks at data between 2017-2019. That doesn't feel like a large enough window to me. For it to mean much at all. Let me know if I need to change the flair to discussion