the rural population and 36.2 percent of the urban population has education below the 7th grade. 18.9 percent of the rural population and 8.9 percent of the urban population lacks any form of formal education. Current figures estimate that at least 44.2 percent of the population lives under poverty. Of those, 33.7 live under a moderate state of poverty and at least 10.5 percent live under extreme poverty. States with highest human development: Baja California, Baja California Sur, Chihuahua, Coahuila, Colima, Federal District, Nuevo León, Quintana Roo, Sinaloa, Sonora, and Tamaulipas. States with lowest human development: Chiapas, Guerrero, Hidalgo, Michoacán, Oaxaca, Puebla, Tabasco, Tlaxcala, Veracruz, and Zacatecas. World comparison *The next comparisons are done between national poverty lines, meaning that each country has a different criteria to set its poverty line, for a comparison among countries under the same criteria see International poverty line Mexico is the second largest economy in Latin America, after Brazil; and the second Latin American country with most number of poor, after Brazil as well; given Mexico's population is about 80 million less than Brazil. Mexico has the 11th to 13th richest economy in the world and ranks 4th with most number of poor among richest economies. Mexico is the 10th to 13th country with the most number of poor in the world. Of the ten countries with greater population, Mexico ranks 8th as nation with most number of poor behind the People's Republic of China, India, Indonesia, Brazil, Pakistan, Nigeria, and Bangladesh. Of 193 United Nations members, at least 113 nations show higher levels of poverty and decreased social development and at least 55 other nations have less poverty and higher social development. Mexico ranks 56th among most developed of the world's nations. It ranks 4th as most developed of Latin American countries, behind Chile. Poverty and indigenous communities Indigenous communities suffer particularly from poverty, causing them to be marginalized from society. Although "local and federal governments implemented social protection programs so as to alleviate poverty conditions and interregional disparities, in general, conditions for indigenous people remain unchanged," (Gonzales cited World Bank, 2005). Studies have shown that ethnicity is an important cause for inequality in income distribution, access to basic health care services and education, which in turn explain the significant difference in earnings between indigenous and non-indigenous people. According to the World Bank, about three-quarters of indigenous peoples in Mexico are poor and