Thank you, Andrew!

Thanks for your wonderful comment. I hope to help a lot of people through this post for a long time. Here's your answer from the Steem whitepaper.

SP holders are also paid interest on the balance of SP that remains vested. 15% of the yearly inflation is
paid to SP holders as interest. The amount of the interest that they receive is directly proportional to the
amount of SP they hold relative to the total amount of vested SP across all users.

Please don't forget to resteem the post as a support.