Not Steem. Steem Dollars. It's the compound interest!
Cob please look at my blog post on the subject and check out this Steem Dollar Compound Interest Calculator.

Help me SPREAD THE WORD!
https://steemit.com/poloniex/@godcomplex/remember-steem-dollars-provide-10-annual-interest
https://jscalc.io/calc/mKEqkCwkOOe4IzwV