What is the total supply of ontology?

Could you please clarify for me the total amount of ontology that has been issued or is available for circulation? Understanding the total supply of a cryptocurrency is crucial in assessing its potential for growth and scarcity, which can significantly impact its value. Is there a fixed limit to the total number of ontology tokens, or is there a mechanism in place for increasing the supply over time? Your insight into this matter would be greatly appreciated.