Currently, even just holding Steem Power gives you 6.7% more Steem over the course of a year.
This is incorrect Luke. The current annual inflation rate is about 9%. The stats from Steemdb.com represent the allocation of that 9% across all the participants in the network. So the actual annual "interest" of holding Steem Power is 9% x 6.7% = 0.603%.
The distribution of the new tokens is currently still distorted by HF 19 the actual Steem Power interest should be 9% x 15% = 1.35% per the new blockchain rules enforced since HF 16.
Ah, shoot, I certainly don't want to spread incorrect information! Thanks for the correction. Yes, I see that's just the percentage of the newly created Steem that is allocated to Steem Power holders compared to other groups.
I will edit my post.