The Kimberley Process or Kimberley Process Certification Scheme has been internationally adopted by governments, companies and civil society to stop the trade in conflict diamonds. The KP was introduced in January 2003 and is supported by the United Nations. The Scheme requires the governments of diamond-producing countries to certify shipments of rough diamonds as ‘conflict-free' and prevent conflict diamonds from entering the legitimate trade. Each rough diamond requires a certificate of origin and can only be exported into KP member states. This Certification Scheme is one of the few legally-binding regimes regulating the trade in conflict resources. Today, it has 54 participants (the 28 member states of the European Union count as one participant). Every six months, member countries present production data of rough diamonds; every three months, they submit trade data. These data are publicly available on the websites of the Kimberley Rough Diamond Statistics from the year 2004 to present.