It says here 20 mil total circulating, but we are now at 22,4 mil, how is that?

Have a read through the tokenomics here, staking rewards come from a combination of issuance on the network and transaction fees Max after 10 years is 31.4 million, but this number will never be hit due to the nature of the issuance model, the more transactions on the network the less the issuance will be https://elrond.com/blog/the-wealth-of-crypto-networks-elrond-economics-paper/ We are in year 2 in the above tokenomics charts found in the link above. It runs from September, which is when the tokens swapped from ERD