You can view the current number of circulating CNS on this page
Centric Cash is minted in exchange for Centric Rise (CNR). The number of circulating Centric Cash is dependent on the number of Centric RIse tokens held in security on the Centric Rise smart contract.
The number of Centric Cash in circulation equals the USD value of Centric Rise held in security ensuring 1 Centric Cash token can always be redeemed for $1USD of Centric Rise. Each hour Centric Rise tokens are burnt in accordance with the above rule to ensure the stability of the network.