I would love to be a fly on the wall at Facebook if even 1/10 of their users all submitted such requests in the same time period:
According to European data protection law every individual has the right to get a copy of all personal data a company holds about him (right to access). This law is applicable to facebook too, since every European user has a contract with “Facebook Ireland Limited”, based in Dublin, Ireland.
Facebook has a well hidden page, where you can send them an access request.
Generally all nonusers have the same right to access data that Facebook might hold about them.
Read more on Europe vs. Facebook.