I did a very rough calc.

9.5% STEEM inflation per year gives around 60k Steem per day.

Then 75% of that goes to authors and curators pot with 75% of that pot to the post payouts. This gives around 34k. This seems to also tie in with the daily payout values I was calculating based on author rewards but I stand to be corrected.

Is the 43k including curation rewards?