The Nigerian Customs Service has issued a circular on 23rd June 2015 for accepting the implementation of the Economic Community of West African States (ECOWAS) Common External Tariff (CET) 2015-2019. Benin, Burkina Faso, Cape Verde, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Niger, Nigeria, Senegal, Sierra Leone and Togo are the member states of the ECOWAS.