According to Messari data, the current circulation of SOL is 361,169,767.37. In the past 7 days, the circulation of SOL has increased by 1.837 million, which is caused by the inflation reward mechanism.
Inflation rewards are a community-driven issuance mechanism. Most of the inflation tokens will be issued as rewards for staking SOL, and some will be distributed to validators. SOL holders can earn rewards and help protect the network by staking tokens to one or more validators on the Solana mainnet beta. According to the plan, the initial inflation rate is 8%, which will then decrease by 15% year by year, and the long-term inflation rate will be 1.5%.