Hi @topfreeser

The 20 years from now is the time period it will take Steem to reach an inflation rate of close to 0%. After this period they will not print any additional coins and the Steem in circulation is all that would be left.

As for SBD (Steem Based Dollars) they always print more coins to force the price of SBD back to US$1. As ssen in the post, they have printed 1300% more coins from the time that there had been 1.0 million coins in circulation.