On this forum? Not even close. In the general population, perhaps. In the entertainment industry, probably higher than that.
You also should consider that there are libertarians who don't consider themselves to be such, because they're only familiar with LINOs and think that's what a libertarian is.
A valid point, IHMO. I have Libertarian friends who don;t even know they are, until I explain the diff between what they think is Libertarian and what really is.