The city of Colima is the economic center of the state. Outside in the small communities of the municipality, agriculture is still the most important economic activity. The city has been ranked as first as liveable small city in Mexico and tenth in Latin America by FDI Intelligence. It is one of seventy-one urban areas and 308 municipalities that contribute over eighty percent of Mexico's GDP. It is ranked twelfth in competitiveness. Its main competitive advantage is reliable and objective local laws with its weakness being sustainable use of the local environment. The working population of the municipality is 51,509, with 3,145 working in agriculture, 10,820 in industry, mining and construction and 35,809 in commerce and services . A study by the University of Colima concluded that the municipality is the most competitive in the state and one of the most competitive in the center west of Mexico. Two economic advantages the municipality has are its well development commerce and services sector and its low rate of unemployment. One main disadvantage is its lack of developed technology sector, with most businesses dedicated to basic commodities. Others include high bureaucratic costs, crime rate, over exploitation of aquifers and problems with waste management, especially hazardous materials.