SBD conversions to STEEM have almost stopped completely and therefore no 'extra' STEEM has been added to the supply because of that.

...I actually had no idea that when people did the three day conversion thing, it was destroying SBD and creating Steem. I thought it was just basically trading with Stinc's supply, because I figured they had a big ass bag. Shows how non-techie I am, I suppose. LOL So thanks for the information! Learn something new every day.