Grace & Peace!
At the risk of sounding controversial, I’m surprised that the projected number is that low. When one considers that the church teaches that gay men are called to celibacy, as are priests, I would not doubt that a large number of gay catholic men wishing to remain faithful to the magesterium would seriously consider the priesthood–it is as if they were preselected for it.
Regardless, though, I agree with those above who wrote that the sexual orientation of a priest is immaterial to his duties. It may not be immaterial to him (he may struggle, regardless of his urges, and his struggle can be offered to Christ), but it has nothing to do with his office. It is only of import to those who misguidedly believe that homosexual people are, because of their orientation, more disposed to vice than their heterosexual counterparts. Thankfully, though, human nature is not more fallen in gay people than in straight.
–Mark
Deo Gratias!