It would be really scary if all of those succeeded.
I wouldn't dismiss unsuccessful suicides. Someone who doesn't succeed or turn back before committing isn't cured or any happier and may very well attempt again or live under a black cloud of depression and stress.
As for your comment on involuntary commitment, it makes no sense. There is a well known "cure" for gender dysphoria and it is gender transition. "after treatment, 26 (2.4%) of the MTF subjects and 7 (1.4%) of the FTM subjects still reported depression"[1]. According to this study, only 2.4% still report depression after transition. There are more studies reporting similar results, find them yourself.
[1] http://www.medscape.com/viewarticle/827713
Edit: I've reread your post and your other post. I understand that your comment on involuntary commitment was meant if my mistake was true and the successful suicide rate was indeed 45%.
If that were true, it would be alarming and possibly grounds for involuntary commitment based on someone being trans.
Fortunately it is not true.