With STEEM, we are at 9.25% and going down .25% approximately each year.

I think 0.5% declining rate approximately per year and then 1% steady rate after 16 years.

More explanation:

1. https://steemit.com/steem/@steemitblog/final-review-of-steem-economic-changes

2. https://steemit.com/booster-knowledge/@booster/how-to-use-booster-upvote-bot-and-explaining-the-primary-and-secondary-systems-the-steem-inflation