But it is growing more like 200-300% in the first year to distribute coins. See this post. The benefits to Steem are much higher this year than in he future

https://steemit.com/steemit/@jl777/how-to-have-your-cake-and-eat-it-to-or-how-you-can-have-your-sp-increase-even-while-you-are-powering-down#@dennygalindo/re-jl777-how-to-have-your-cake-and-eat-it-to-or-how-you-can-have-your-sp-increase-even-while-you-are-powering-down-20160805t124308944z