How many have climbed Everest without oxygen?

Have you ever wondered just how many brave souls have successfully scaled the world's tallest mountain, Mount Everest, without the aid of supplemental oxygen? This feat of endurance and physical prowess is no small task, as the thin air and harsh conditions make every step a monumental challenge. So, I pose the question to you, how many climbers have managed to reach the summit of Everest without relying on oxygen tanks to assist them in their ascent? The answer, while perhaps surprising to some, serves as a testament to the remarkable strength and determination of those who have dared to dream big and push themselves to the very limits of human endurance.