Corporate graphic design pays exactly that amount in several Southeastern cities, and that's considered better than average. source: seen the paystubs.
Not for corporate design specifically - some graphic designers specialize in that. However, there are certainly professional bodies for graphic designers.[1]
From the Wikipedia link you provided, graphic design has achieved the first 4 milestones of being a profession:
"an occupation becomes a full-time occupation, the establishment of a training school, the establishment of a university school, the establishment of a local association".
