The economy contains rapidly developing modern industrial and service sectors.Recent administrations have expanded competition in ports, railroads, telecommunications, electricity generation, natural gas distribution and airports, with the aim of upgrading infrastructure.As an export-oriented economy, more than 90% of Mexican trade is under free trade agreements (FTAs) with more than 40 countries, including the European Union, Japan, Israel, and much of Central and South America. The most influential FTA is the North American Free Trade Agreement (NAFTA), which came into effect in 1994, and was signed in 1992 by the governments of the United States, Canada and Mexico. In 2006, trade with Mexico's two northern partners accounted for almost 90% of its exports and 55% of its imports.