How many people use DeFi?

Can you provide me with an estimate of the number of individuals currently utilizing decentralized finance, or DeFi, platforms? Given the rapid growth and adoption of blockchain-based financial applications in recent years, I'm curious to know the scale of this emerging sector. Are there any reliable sources or statistics that can offer insights into the user base of DeFi services? Understanding the popularity and usage of DeFi could help assess its potential impact on the broader financial landscape.