What is the total supply of Ampleforth?

Excuse me, but I was wondering if you could clarify something for me. I've been researching cryptocurrencies and came across Ampleforth. Now, I understand that it's a unique project with an elastic supply mechanism, but I'm a bit confused about the total supply. Could you please explain to me what the total supply of Ampleforth is, and how it differs from other cryptocurrencies with fixed supplies? It would be greatly appreciated.