Organization for Security and Co-operation in Europe statistics
1 These countries are currently not participating in the EU's single market (EEA), but the EU has common external Customs Union agreements with Turkey (EU-Turkey Customs Union in force since 1995), Andorra (since 1991) and San Marino (since 2002). Monaco participates in the EU customs union through its relationship with France; its ports are administered by the French.
Source: Wikipedia — Organization for Security and Co-operation in Europe statistics (CC BY-SA 4.0)