largest in Latin America. In these shopping centers, there are several movie theaters of major companies such as Cine Colombia, Cine Royal and Cinemark, clothing stores like Adidas, Levi's, and national brands such as Arturo Calle, restaurants and cafes as Presto, El Corral, McDonald's, Crêpes & Waffles, Juan Valdez. One of the largest hypermarket chains in Colombia, Exito, has five stores throughout the city and a distribution center for eastern Colombia. Carrefour opened in 2007 the first store at Megamall, merging later with a local supermarket named Mercadefam. The chain now has seven stores in the city. Along with this, there are local small chain stores in Bucaramanga such as Mercomfenalco, Cootracolta, Cajasan, and others. Labor market Historically, Bucaramanga has had one of the lowest rates of unemployment among Colombian cities. As of September 2010, according to DANE statistics between July and September 2010, the city had an unemployment rate of 11.8%, increasing by 3.3% compared to October and December 2009 which showed a rate of 8.5%. Transport Metrolínea is the Integrated Mass Transit System of Bucaramanga. Its construction began in 2006 during the administration of Mayor Honorio Galvis; its operation is currently in its first phase, which began on 22 December 2009. The six lines inaugurated in this phase are: Avenida del Libertador (Diagonal 15), autocentral, Prospero Finch Avenue (27th Avenue), La Cumbre, Highway Floridablanca Villabel Bucarica and which have 91 stopways. The administration is currently in the process of coupling the second phase, which will cover the areas of Piedecuesta, Ciudadela Real de Minas, the Avenue of the Americas (Race 33) and will have trunks at Autosur, Real de Minas and the Americas. National road connection Bucaramanga is connected to the mainland by two main routes. The first is the National Route 66 which comes from Barrancabermeja and Cucuta communicates with and then into Venezuela, the second the Ruta Nacional 45A that comes from Bogotá and San Alberto comes up this road connects with the Colombian Caribbean region and major cities across the Ruta Nacional 45. Air transport The international airport serving Bucaramanga is Palonegro International Airport, located on the hill of Palonegro, west of the metropolitan area and close to the town of Lebrija. The airport opened in 1974, replacing the old airport Gómez Niño located in the Ciudadela Real de Minas. The airport currently operates under the administration of the Palonegro consortium Colombo-Korean SAS East Airports