Seriously, by the year end half of the 21m coins will have been issued, there will be stronger headwind for future growth, 100% YOY growth won't cut it.
That is your unsupported opinion. Personally I think anything higher than 100% YOY growth is improbable given the early stage of Bitcoin's existence.
It's not improbable at all. Faster growth happens every single time something goes from not existing to being large. The forum had way more than 100% YOY growth the year before.
But this is a just forum about Bitcoin. When Bitcoin is the only money used anywhere the vast majority of people will not talk or think about it.
It used to be that every bitcoiner used the bitcoin.org forum regularly I'd bet it's 10-20% now.