Where, when and how were the samples for that barometer taken?
If they're really so confident those number being accurate, why don't we have referendum and we can decided there and ink it to make it official.
This is all publicly-available information, I trust you can find it.
> why don't we have referendum
Referendums are the prerogative of member states, the EU doesn't have the legal powers to organise a referendum. If you want one, speak to your MP.