What are the four largest cities in Mexico and what are their populations?

Mexico's Biggest Cities in population according to 2005 census are: 1.- Mexico City - 19.231.82 2.- Guadalajara - 4.095.853 3.- Monterrey - 3.664.331 4.- Puebla - 2.109.049 5.- Toluca - 1.610.786 6.- Tijuana - 1.410.700 7.- Leon - 1.325.210