Note: This calendar view maps the number of captures of https://www.youtube.com/premium?ybp=Eg9GRXdoYXRfdG9fd2F0Y2gqEmRtZWEtYWNxLWMtZWdzbzE4YToaCAYYASoUChJkbWVhLWFjcS1jLWVnc28xOGE%253D, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.