Note: This calendar view maps the number of captures of https://www.facebook.com/login.php?next=https%3A%2F%2Fwww.facebook.com%2Fbrowse%2Ffanned_pages%2F%3Fid%3D51626468389%26showauxiliary%3D1%26fanorigin%3Dtimeline_like_chaining%26ref%3Dpage_internal, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.