From your link:
"MSM [gay males] accounted for 52% of all people living with HIV infection in 2009, the most recent year these data are available"[snip]"and 63% of all new infections"
So it isn't hard to extrapolate and guess that some date before 2009, the "gay male" segment was below half (as now, it's almost exactly half), but the gay male segment grew faster than others recently to overtake it.
The last time I had looked, straight people still lead the gay-male category, but it has been a few years. And its still more non-Black than Black, but it was more white than non-white when I last paid attention.
I don't check the statistics on an annual basis to see what the trends are. None of those results affect my behavior.