The state has about 13.5% of all of Mexico's indigenous population, and it has been ranked among the ten "most indianized" states, with only Campeche, Oaxaca, Quintana Roo and Yucatán having been ranked above it between 1930 and the present. These indigenous peoples have been historically resistant to assimilation into the broader Mexican society, with it best seen in the retention rates of indigenous languages and the historic demands for autonomy over geographic areas as well as cultural domains. Much of the latter has been prominent since the Zapatista uprising in 1994.