Estudios Económicos de El Colegio de México, vol. 34, no. 2, july-december, 2019 is a biannual publication edited by El Colegio de México, A.C. Carretera Picacho Ajusco, núm. 20, Ampliación Fuentes del Pedregal, C.P. 14110, Tlalpan, Mexico City, Mexico. Contact: María del Rocío Contreras Romo, Managing Editor, email@example.com, firstname.lastname@example.org. All Rights Reserved: 04-2015-111713031100-203; ISSN (print) 0188-6916; ISSN (electronic) 0186-7202, as registered with the National Copyright Institute. The person in charge of updating this issue: María del Rocío Contreras Romo, date of last update: June 25, 2019. The content of the articles published is the responsibility of the authors, and does not represent the views or opinions of Estudios Económicos or El Colegio de México. The partial or total reproduction of the contents or images published in the journal is authorized, including electronic storage, provided it is strictly for academic purposes and not for profit, and that the source is cited without altering the content, and authorial credits are given.