Four countries (Brazil, Colombia, Chile and Ecuador) abandoned in 1999 their currency band regimes and let their currencies float, and this latter type of regime is now the most common system in the region.
1999年，有四个国家（巴西、哥伦比亚、智利和厄瓜多尔）取消货币挂钩机制，实施货币浮动制。