Answer:
9.9 Billion is the total supply when the Beldex network transitioned from POW to POS.
Since then, 10 BDX is minted for every block that is produced to reward validators. Precisely, 6.25 BDX of the 10 BDX is awarded to the validator that constructs and verifies the block. 3.25 BDX is allocated to governance.
Thus, to answer your question, the BDX minted is in addition to the 9.9 B total supply.
To understand how much BDX is minted in a day, week, month or year, you can use this formula.
Total blocks produced in a day/week/month/year * 10 BDX = Total BDX minted in a day/week/month/year
The block time of the Beldex network is 30 seconds, so on an average, 2880 blocks are produced in a day.
Therefore, BDX minted is approximately,
2880*10 = 28800 BDX / day
2880*10*7 = 201600 BDX / week
2880*10*30 = 864000 BDX / month
2880*10*365 = 10512000 BDX / year
Or about 0.001% of the total supply of 9.9 B is minted every year.