The estimated bitcoin that hasn't been mined is around 12%.
If bitcoin has been depleted at the mine then what happens is an increase in price on condition that more crypto currency is used for real economic transactions.
the growth of bitcoin prices will certainly continue to grow over time.
It's also important to understand that Bitcoin's price isn't solely influenced by the number of unmined coins. Many other factors influence price movements, such as the level of public adoption, government regulations, market sentiment, blockchain technology developments, and global economic conditions.