What is the circulating supply of THORChain?

Excuse me, could you kindly elaborate on the concept of "circulating supply" when it comes to THORChain, specifically? I'm curious to understand how this metric relates to the total number of THORChain tokens in existence, and whether it excludes any tokens that are locked, reserved, or not currently in circulation. Additionally, I'm interested in knowing if there's a way to track the changes in THORChain's circulating supply over time and how it might impact the cryptocurrency's value and market dynamics.