Numerical  Analysis

The point was made by a comment under a Ben Shapiro article on the Daily Wire which pointed out that the 45% statistic implies that the transgender population would crash to almost zero in a short amount of time.  It can be found by this recursive calculation.
Starting with the general population times the prevalence of transgender people of 380 per 100,000 \cite{Meerwijk2017}.  Times the population of the United States of America as of March 2018 of  approximately, G,  330 million \cite{us}.
\(P_0=Gt_p\)
Subsequent years are computed from this formula.  The transgender population in year y is equal to the product of one minus the product of the fraction of suicide attempts and suicide successes with the size of the transgender population the previous year.  Then add the number of people born times the percentage of births that will be someone who eventually comes out as transgender 0.01%.  Computed simply by dividing the number of transgender people by 50 and not meant to claim anything about the etiologies(s) or cause(s) of transgenderism. 
\(P_y=P_{y-1}\left(1-S_AS_S\right)+Bt_b\)
A summary of the spreadsheet calculation is here in figure 1.  The excel file is attached.