The Central American Bank for Economic Integration (CABEI) was established in 1960 by the Republics of Guatemala, El Salvador , Honduras , Nicaragua and Costa Rica to promote regional integration and the social and economic development.  Mexico, the Republic of China, Argentina, Colombia and the Kingdom of Spain are also incorporated as non-regional members of the Bank.  On September 2nd, 1989 , in the city of Managua , Nicaragua , the founding countries of CABEI signed the Protocol of Amendments to the Constitutive Agreement, which allows the participation of non-regional countries as members of the Bank.  In January 1992, with the implementation  of the fifth ratification instrument, the modified Constitutive Agreement came into effect, allowing the direct incorporation of non regional countries to the Bank’s equity. On November 1992, the Republics of Mexico and China were incorporated as non-regional members of the Central American Bank, with contributions of US$122.5 million and US$150.0 million, respectively. Subsequently, in March 1995 and April 1997, the Republics of Argentina and Colombia were incorporated with contributions of US$57.6 million each. Spain signed an adhesion agreement to incorporate as non regional member with US$200 million in capital on March 5, 2004 .