Telling us a figure is wrong
Every figure here comes from a source we can show, which also means every figure can be checked and some will be wrong. Each listing carries a link to report an error, and a person reads every report; it is not a form that goes into a queue nobody opens.
Say what is wrong and, if you have it, where the right value is published. A correction that names the maker's page or the document it comes from is acted on in hours rather than days. You can leave a phone or an email so we can come back to you, and it is never shown on the page.
An accepted correction is locked, so a later update cannot quietly undo it. That is the part that matters: the value stays fixed once a person has agreed it was wrong. You can also write to the corrections address if you would rather not use the form.