MEXICO CITY -- Miguel de la Madrid Hurtado, who led Mexico from 1982 to 1988 during economic crisis and a devasting earthquake died Sunday at age 77, President Felipe Calderon announced on his Twitter account.A spokeswoman for Calderon's office speaking on condition of anonymity because she was not authorized to speak to be quoted by the press confirmed Sunday that the message was posted by Calderon.Read More... More on Video