Later, when the year-2537 (1994,) was edited and Ouro Preto Protocol Declaration by which the Customs Union set to begin the system used since January 1 2538 (, 1995).
Later in the year 2537 (1994) have been revised and updated by the Declaration of Ouro Preto Protocol, which establishes a customs union began to be used. Beginning on January 1, 2538 (1995) onwards.
And it came to pass, when 2537 years (AD 1994). A revised and updated by the Ouro Preto Protocol which set to activate the customs union to use, since the day 1 January 2538 (AD 1995). Onwards.